NEWS revision 1.21
1 News for the tz database 2 3 Release 2017b - 2017-03-17 07:30:38 -0700 4 5 Briefly: Haiti has resumed DST. 6 7 Changes to past and future time stamps 8 9 Haiti resumed observance of DST in 2017. (Thanks to Steffen Thorsen.) 10 11 Changes to past time stamps 12 13 Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01. 14 15 Use "MMT" to abbreviate Liberia's time zone before 1972, as "-004430" 16 is one byte over the POSIX limit. (Problem reported by Derick Rethans.) 17 18 19 Release 2017a - 2017-02-28 00:05:36 -0800 20 21 Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia 22 discontinues DST. 23 24 Changes to future time stamps 25 26 Mongolia no longer observes DST. (Thanks to Ganbold Tsagaankhuu.) 27 28 Chile's Region of Magallanes moves from -04/-03 to -03 year-round. 29 Its clocks diverge from America/Santiago starting 2017-05-13 at 30 23:00, hiving off a new zone America/Punta_Arenas. Although the 31 Chilean government says this change expires in May 2019, for now 32 assume it's permanent. (Thanks to Juan Correa and Deborah 33 Goldsmith.) This also affects Antarctica/Palmer. 34 35 Changes to past time stamps 36 37 Fix many entries for historical time stamps for Europe/Madrid 38 before 1979, to agree with tables compiled by Pere Planesas of the 39 National Astronomical Observatory of Spain. As a side effect, 40 this changes some time stamps for Africa/Ceuta before 1929, which 41 are probably guesswork anyway. (Thanks to Steve Allen and 42 Pierpaolo Bernardi for the heads-ups, and to Michael Deckers for 43 correcting the 1901 transition.) 44 45 Ecuador observed DST from 1992-11-28 to 1993-02-05. 46 (Thanks to Alois Treindl.) 47 48 Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21. 49 (Thanks to Stepan Golosunov.) 50 51 Changes to past and future time zone abbreviations 52 53 Switch to numeric time zone abbreviations for South America, as 54 part of the ongoing project of removing invented abbreviations. 55 This avoids the need to invent an abbreviation for the new Chilean 56 new zone. Similarly, switch from invented to numeric time zone 57 abbreviations for Afghanistan, American Samoa, the Azores, 58 Bangladesh, Bhutan, the British Indian Ocean Territory, Brunei, 59 Cape Verde, Chatham Is, Christmas I, Cocos (Keeling) Is, Cook Is, 60 Dubai, East Timor, Eucla, Fiji, French Polynesia, Greenland, 61 Indochina, Iran, Iraq, Kiribati, Lord Howe, Macquarie, Malaysia, 62 the Maldives, Marshall Is, Mauritius, Micronesia, Mongolia, 63 Myanmar, Nauru, Nepal, New Caledonia, Niue, Norfolk I, Palau, 64 Papua New Guinea, the Philippines, Pitcairn, Qatar, Runion, St 65 Pierre & Miquelon, Samoa, Saudi Arabia, Seychelles, Singapore, 66 Solomon Is, Tokelau, Tuvalu, Wake, Vanuatu, Wallis & Futuna, and 67 Xinjiang; for 20-minute daylight saving time in Ghana before 1943; 68 for half-hour daylight saving time in Belize before 1944 and in 69 the Dominican Republic before 1975; and for Canary Islands before 70 1946, for Guinea-Bissau before 1975, for Iceland before 1969, for 71 Indian Summer Time before 1942, for Indonesia before around 1964, 72 for Kenya before 1960, for Liberia before 1973, for Madeira before 73 1967, for Namibia before 1943, for the Netherlands in 1937-9, for 74 Pakistan before 1971, for Western Sahara before 1977, and for 75 Zaporozhye in 1880-1924. 76 77 For Alaska time from 1900 through 1967, instead of "CAT" use the 78 abbreviation "AST", the abbreviation commonly used at the time 79 (Atlantic Standard Time had not been standardized yet). Use "AWT" 80 and "APT" instead of the invented abbreviations "CAWT" and "CAPT". 81 82 Use "CST" and "CDT" instead of invented abbreviations for Macau 83 before 1999 and Taiwan before 1938, and use "JST" instead of the 84 invented abbreviation "JCST" for Japan and Korea before 1938. 85 86 Change to database entry category 87 88 Move the Pacific/Johnston link from 'australasia' to 'backward', 89 since Johnston is now uninhabited. 90 91 Changes to code 92 93 zic no longer mishandles some transitions in January 2038 when it 94 attempts to work around Qt bug 53071. This fixes a bug affecting 95 Pacific/Tongatapu that was introduced in zic 2016e. localtime.c 96 now contains a workaround, useful when loading a file generated by 97 a buggy zic. (Problem and localtime.c fix reported by Bradley 98 White.) 99 100 zdump -i now outputs non-hour numeric time zone abbreviations 101 without a colon, e.g., "+0530" rather than "+05:30". This agrees 102 with zic %z and with common practice, and simplifies auditing of 103 zdump output. 104 105 zdump is now buildable again with -DUSE_LTZ=0. 106 (Problem reported by Joseph Myers.) 107 108 zdump.c now always includes private.h, to avoid code duplication 109 with private.h. (Problem reported by Kees Dekker.) 110 111 localtime.c no longer mishandles early or late timestamps 112 when TZ is set to a POSIX-style string that specifies DST. 113 (Problem reported by Kees Dekker.) 114 115 date and strftime now cause %z to generate "-0000" instead of 116 "+0000" when the UT offset is zero and the time zone abbreviation 117 begins with "-". 118 119 Changes to documentation and commentary 120 121 The 'Theory' file now better documents choice of historical time 122 zone abbreviations. (Problems reported by Michael Deckers.) 123 124 tz-link.htm now covers leap smearing, which is popular in clouds. 125 126 127 Release 2016j - 2016-11-22 23:17:13 -0800 128 129 Briefly: Saratov, Russia moves from +03 to +04 on 2016-12-04. 130 131 Changes to future time stamps 132 133 Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00. 134 This hives off a new zone Europe/Saratov from Europe/Volgograd. 135 (Thanks to Yuri Konotopov and Stepan Golosunov.) 136 137 Changes to past time stamps 138 139 The new zone Asia/Atyrau for Atyra Region, Kazakhstan, is like 140 Asia/Aqtau except it switched from +05/+06 to +04/+05 in spring 141 1999, not fall 1994. (Thanks to Stepan Golosunov.) 142 143 Changes to past time zone abbreviations 144 145 Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote 146 summer time before 1948. The old use of "EET" was a typo. 147 148 Changes to code 149 150 zic no longer mishandles file systems that lack hard links, fixing 151 bugs introduced in 2016g. (Problems reported by Tom Lane.) 152 Also, when the destination already contains symbolic links, zic 153 should now work better on systems where the 'link' system call 154 does not follow symbolic links. 155 156 Changes to documentation and commentary 157 158 tz-link.htm now documents the relationship between release version 159 numbers and development-repository commit tags. (Suggested by 160 Paul Koning.) 161 162 The 'Theory' file now documents UT. 163 164 iso3166.tab now accents "Curaao", and commentary now mentions 165 the names "Cabo Verde" and "Czechia". (Thanks to Ji Boh.) 166 167 168 Release 2016i - 2016-11-01 23:19:52 -0700 169 170 Briefly: Cyprus split into two time zones on 2016-10-30, and Tonga 171 reintroduces DST on 2016-11-06. 172 173 Changes to future time stamps 174 175 Pacific/Tongatapu begins DST on 2016-11-06 at 02:00, ending on 176 2017-01-15 at 03:00. Assume future observances in Tonga will be 177 from the first Sunday in November through the third Sunday in 178 January, like Fiji. (Thanks to Pulu Anau.) Switch to numeric 179 time zone abbreviations for this zone. 180 181 Changes to past and future time stamps 182 183 Northern Cyprus is now +03 year round, causing a split in Cyprus 184 time zones starting 2016-10-30 at 04:00. This creates a zone 185 Asia/Famagusta. (Thanks to Even Scharning and Matt Johnson.) 186 187 Antarctica/Casey switched from +08 to +11 on 2016-10-22. 188 (Thanks to Steffen Thorsen.) 189 190 Changes to past time stamps 191 192 Several corrections were made for pre-1975 time stamps in Italy. 193 These affect Europe/Malta, Europe/Rome, Europe/San_Marino, and 194 Europe/Vatican. 195 196 First, the 1893-11-01 00:00 transition in Italy used the new UT 197 offset (+01), not the old (+00:49:56). (Thanks to Michael 198 Deckers.) 199 200 Second, rules for daylight saving in Italy were changed to agree 201 with Italy's National Institute of Metrological Research (INRiM) 202 except for 1944, as follows (thanks to Pierpaolo Bernardi, Brian 203 Inglis, and Michael Deckers): 204 205 The 1916-06-03 transition was at 24:00, not 00:00. 206 207 The 1916-10-01, 1919-10-05, and 1920-09-19 transitions were at 208 00:00, not 01:00. 209 210 The 1917-09-30 and 1918-10-06 transitions were at 24:00, not 211 01:00. 212 213 The 1944-09-17 transition was at 03:00, not 01:00. This 214 particular change is taken from Italian law as INRiM's table, 215 (which says 02:00) appears to have a typo here. Also, keep the 216 1944-04-03 transition for Europe/Rome, as Rome was controlled by 217 Germany then. 218 219 The 1967-1970 and 1972-1974 fallback transitions were at 01:00, 220 not 00:00. 221 222 Changes to code 223 224 The code should now be buildable on AmigaOS merely by setting the 225 appropriate Makefile variables. (From a patch by Carsten Larsen.) 226 227 228 Release 2016h - 2016-10-19 23:17:57 -0700 229 230 Changes to future time stamps 231 232 Asia/Gaza and Asia/Hebron end DST on 2016-10-29 at 01:00, not 233 2016-10-21 at 00:00. (Thanks to Sharef Mustafa.) Predict that 234 future fall transitions will be on the last Saturday of October 235 at 01:00, which is consistent with predicted spring transitions 236 on the last Saturday of March. (Thanks to Tim Parenti.) 237 238 Changes to past time stamps 239 240 In Turkey, transitions in 1986-1990 were at 01:00 standard time 241 not at 02:00, and the spring 1994 transition was on March 20, not 242 March 27. (Thanks to Kvan Yazan.) 243 244 Changes to past and future time zone abbreviations 245 246 Asia/Colombo now uses numeric time zone abbreviations like "+0530" 247 instead of alphabetic ones like "IST" and "LKT". Various 248 English-language sources use "IST", "LKT" and "SLST", with no 249 working consensus. (Usage of "SLST" mentioned by Sadika 250 Sumanapala.) 251 252 Changes to code 253 254 zic no longer mishandles relativizing file names when creating 255 symbolic links like /etc/localtime, when these symbolic links 256 are outside the usual directory hierarchy. This fixes a bug 257 introduced in 2016g. (Problem reported by Andreas Stieger.) 258 259 Changes to build procedure 260 261 New rules 'traditional_tarballs' and 'traditional_signatures' for 262 building just the traditional-format distribution. (Requested by 263 Deborah Goldsmith.) 264 265 The file 'version' is now put into the tzdata tarball too. 266 (Requested by Howard Hinnant.) 267 268 Changes to documentation and commentary 269 270 The 'Theory' file now has a section on interface stability. 271 (Requested by Paul Koning.) It also mentions features like 272 tm_zone and localtime_rz that have long been supported by the 273 reference code. 274 275 tz-link.htm has improved coverage of time zone boundaries suitable 276 for geolocation. (Thanks to heads-ups from Evan Siroky and Matt 277 Johnson.) 278 279 The US commentary now mentions Allen and the "day of two noons". 280 281 The Fiji commentary mentions the government's 2016-10-03 press 282 release. (Thanks to Raymond Kumar.) 283 284 285 Release 2016g - 2016-09-13 08:56:38 -0700 286 287 Changes to future time stamps 288 289 Turkey switched from EET/EEST (+02/+03) to permanent +03, 290 effective 2016-09-07. (Thanks to Burak AYDIN.) Use "+03" rather 291 than an invented abbreviation for the new time. 292 293 New leap second 2016-12-31 23:59:60 UTC as per IERS Bulletin C 52. 294 (Thanks to Tim Parenti.) 295 296 Changes to past time stamps 297 298 For America/Los_Angeles, spring-forward transition times have been 299 corrected from 02:00 to 02:01 in 1948, and from 02:00 to 01:00 in 300 1950-1966. 301 302 For zones using Soviet time on 1919-07-01, transitions to UT-based 303 time were at 00:00 UT, not at 02:00 local time. The affected 304 zones are Europe/Kirov, Europe/Moscow, Europe/Samara, and 305 Europe/Ulyanovsk. (Thanks to Alexander Belopolsky.) 306 307 Changes to past and future time zone abbreviations 308 309 The Factory zone now uses the time zone abbreviation -00 instead 310 of a long English-language string, as -00 is now the normal way to 311 represent an undefined time zone. 312 313 Several zones in Antarctica and the former Soviet Union, along 314 with zones intended for ships at sea that cannot use POSIX TZ 315 strings, now use numeric time zone abbreviations instead of 316 invented or obsolete alphanumeric abbreviations. The affected 317 zones are Antarctica/Casey, Antarctica/Davis, 318 Antarctica/DumontDUrville, Antarctica/Mawson, Antarctica/Rothera, 319 Antarctica/Syowa, Antarctica/Troll, Antarctica/Vostok, 320 Asia/Anadyr, Asia/Ashgabat, Asia/Baku, Asia/Bishkek, Asia/Chita, 321 Asia/Dushanbe, Asia/Irkutsk, Asia/Kamchatka, Asia/Khandyga, 322 Asia/Krasnoyarsk, Asia/Magadan, Asia/Omsk, Asia/Sakhalin, 323 Asia/Samarkand, Asia/Srednekolymsk, Asia/Tashkent, Asia/Tbilisi, 324 Asia/Ust-Nera, Asia/Vladivostok, Asia/Yakutsk, Asia/Yekaterinburg, 325 Asia/Yerevan, Etc/GMT-14, Etc/GMT-13, Etc/GMT-12, Etc/GMT-11, 326 Etc/GMT-10, Etc/GMT-9, Etc/GMT-8, Etc/GMT-7, Etc/GMT-6, Etc/GMT-5, 327 Etc/GMT-4, Etc/GMT-3, Etc/GMT-2, Etc/GMT-1, Etc/GMT+1, Etc/GMT+2, 328 Etc/GMT+3, Etc/GMT+4, Etc/GMT+5, Etc/GMT+6, Etc/GMT+7, Etc/GMT+8, 329 Etc/GMT+9, Etc/GMT+10, Etc/GMT+11, Etc/GMT+12, Europe/Kaliningrad, 330 Europe/Minsk, Europe/Samara, Europe/Volgograd, and 331 Indian/Kerguelen. For Europe/Moscow the invented abbreviation MSM 332 was replaced by +05, whereas MSK and MSD were kept as they are not 333 our invention and are widely used. 334 335 Changes to zone names 336 337 Rename Asia/Rangoon to Asia/Yangon, with a backward compatibility link. 338 (Thanks to David Massoud.) 339 340 Changes to code 341 342 zic no longer generates binary files containing POSIX TZ-like 343 strings that disagree with the local time type after the last 344 explicit transition in the data. This fixes a bug with 345 Africa/Casablanca and Africa/El_Aaiun in some year-2037 time 346 stamps on the reference platform. (Thanks to Alexander Belopolsky 347 for reporting the bug and suggesting a way forward.) 348 349 If the installed localtime and/or posixrules files are symbolic 350 links, zic now keeps them symbolic links when updating them, for 351 compatibility with platforms like OpenSUSE where other programs 352 configure these files as symlinks. 353 354 zic now avoids hard linking to symbolic links, avoids some 355 unnecessary mkdir and stat system calls, and uses shorter file 356 names internally. 357 358 zdump has a new -i option to generate transitions in a 359 more-compact but still human-readable format. This option is 360 experimental, and the output format may change in future versions. 361 (Thanks to Jon Skeet for suggesting that an option was needed, 362 and thanks to Tim Parenti and Chris Rovick for further comments.) 363 364 Changes to build procedure 365 366 An experimental distribution format is available, in addition 367 to the traditional format which will continue to be distributed. 368 The new format is a tarball tzdb-VERSION.tar.lz with signature 369 file tzdb-VERSION.tar.lz.asc. It unpacks to a top-level directory 370 tzdb-VERSION containing the code and data of the traditional 371 two-tarball format, along with extra data that may be useful. 372 (Thanks to Antonio Diaz Diaz, Oscar van Vlijmen, and many others 373 for comments about the experimental format.) 374 375 The release version number is now more accurate in the usual case 376 where releases are built from a Git repository. For example, if 377 23 commits and some working-file changes have been made since 378 release 2016g, the version number is now something like 379 '2016g-23-g50556e3-dirty' instead of the misleading '2016g'. 380 Tagged releases use the same version number format as before, 381 e.g., '2016g'. To support the more-accurate version number, its 382 specification has moved from a line in the Makefile to a new 383 source file 'version'. 384 385 The experimental distribution contains a file to2050.tzs that 386 contains what should be the output of 'zdump -i -c 2050' on 387 primary zones. If this file is available, 'make check' now checks 388 that zdump generates this output. 389 390 'make check_web' now works on Fedora-like distributions. 391 392 Changes to documentation and commentary 393 394 tzfile.5 now documents the new restriction on POSIX TZ-like 395 strings that is now implemented by zic. 396 397 Comments now cite URLs for some 1917-1921 Russian DST decrees. 398 (Thanks to Alexander Belopolsky.) 399 400 tz-link.htm mentions JuliaTime (thanks to Curtis Vogt) and Time4J 401 (thanks to Meno Hochschild) and ThreeTen-Extra, and its 402 description of Java 8 has been brought up to date (thanks to 403 Stephen Colebourne). Its description of local time on Mars has 404 been updated to match current practice, and URLs have been updated 405 and some obsolete ones removed. 406 407 408 Release 2016f - 2016-07-05 16:26:51 +0200 409 410 Changes affecting future time stamps 411 412 The Egyptian government changed its mind on short notice, and 413 Africa/Cairo will not introduce DST starting 2016-07-07 after all. 414 (Thanks to Mina Samuel.) 415 416 Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00. 417 (Thanks to Stepan Golosunov.) 418 419 Changes to past and future time stamps 420 421 Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone 422 abbreviations instead of invented ones. 423 424 Changes affecting past time stamps 425 426 Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00. 427 (Thanks to Stepan Golosunov.) 428 429 430 Release 2016e - 2016-06-14 08:46:16 -0700 431 432 Changes affecting future time stamps 433 434 Africa/Cairo observes DST in 2016 from July 7 to the end of October. 435 Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.) 436 For future years, guess April's last Thursday to October's last 437 Thursday except for Ramadan. 438 439 Changes affecting past time stamps 440 441 Locations while uninhabited now use '-00', not 'zzz', as a 442 placeholder time zone abbreviation. This is inspired by Internet 443 RFC 3339 and is more consistent with numeric time zone 444 abbreviations already used elsewhere. The change affects several 445 arctic and antarctic locations, e.g., America/Cambridge_Bay before 446 1920 and Antarctica/Troll before 2005. 447 448 Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was 449 at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.) 450 451 Changes to code 452 453 zic now outputs a dummy transition at time 2**31 - 1 in zones 454 whose POSIX-style TZ strings contain a '<'. This mostly works 455 around Qt bug 53071 <https://bugreports.qt.io/browse/QTBUG-53071>. 456 (Thanks to Zhanibek Adilbekov for reporting the Qt bug.) 457 458 Changes affecting documentation and commentary 459 460 tz-link.htm says why governments should give plenty of notice for 461 time zone or DST changes, and refers to Matt Johnson's blog post. 462 463 tz-link.htm mentions Tzdata for Elixir. (Thanks to Matt Johnson.) 464 465 466 Release 2016d - 2016-04-17 22:50:29 -0700 467 468 Changes affecting future time stamps 469 470 America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30. 471 (Thanks to Alexander Krivenyshev for the heads-up.) 472 473 Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00. 474 (Thanks to Alexander Krivenyshev and Matt Johnson.) 475 476 New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers 477 Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29 478 at 02:00. (Thanks to Stepan Golosunov.) 479 480 Changes affecting past time stamps 481 482 New zone Europe/Kirov, split off from Europe/Volgograd. It covers 483 Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on 484 1989-03-26 at 02:00, roughly a year after Europe/Volgograd made 485 the same change. (Thanks to Stepan Golosunov.) 486 487 Russia and nearby locations had daylight-saving transitions on 488 1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on 489 1992-03-28 at 23:00 and 1992-09-26 at 23:00. (Thanks to Stepan 490 Golosunov.) 491 492 Many corrections to historical time in Kazakhstan from 1991 493 through 2005. (Thanks to Stepan Golosunov.) Replace Kazakhstan's 494 invented time zone abbreviations with numeric abbreviations. 495 496 Changes to commentary 497 498 Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references). 499 500 501 Release 2016c - 2016-03-23 00:51:27 -0700 502 503 Changes affecting future time stamps 504 505 Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.) 506 507 Chile reverts from permanent to seasonal DST. (Thanks to Juan 508 Correa for the heads-up, and to Tim Parenti for corrections.) 509 Guess that future transitions are August's and May's second 510 Saturdays at 24:00 mainland time. Also, call the period from 511 2014-09-07 through 2016-05-14 daylight saving time instead of 512 standard time, as that seems more appropriate now. 513 514 Changes affecting past time stamps 515 516 Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to 517 +02/+03 on 1989-03-26, not 1991-03-31. Europe/Volgograd changed 518 from +04/+05 to +03/+04 on 1988-03-27, not 1989-03-26. 519 (Thanks to Stepan Golosunov.) 520 521 Changes to commentary 522 523 Several updates and URLs for historical and proposed Russian changes. 524 (Thanks to Stepan Golosunov, Matt Johnson, and Alexander Krivenyshev.) 525 526 527 Release 2016b - 2016-03-12 17:30:14 -0800 528 529 Compatibility note 530 531 Starting with release 2016b, some data entries cause zic implementations 532 derived from tz releases 2005j through 2015e to issue warnings like 533 "time zone abbreviation differs from POSIX standard (+03)". 534 These warnings should not otherwise affect zic's output and can safely be 535 ignored on today's platforms, as the warnings refer to a restriction in 536 POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the 537 warnings is to upgrade to zic derived from tz releases 2015f and later. 538 539 Changes affecting future time stamps 540 541 New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and 542 Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on 543 2016-03-27 at 02:00 local time. They need distinct zones since their 544 post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and 545 Altai Republic, Russia, which will switch from +06 to +07 on the same date 546 and local time. The Astrakhan change is already official; the others have 547 passed the first reading in the State Duma and are extremely likely. 548 Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00. 549 (Thanks to Alexander Krivenyshev for the heads-up, and to Matt Johnson 550 and Stepan Golosunov for followup.) 551 552 As a trial of a new system that needs less information to be made up, 553 the new zones use numeric time zone abbreviations like "+04" 554 instead of invented abbreviations like "ASTT". 555 556 Haiti will not observe DST in 2016. (Thanks to Jean Antoine via 557 Steffen Thorsen.) 558 559 Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00. 560 (Thanks to Hannah Kreitem.) Guess future transitions will be March's last 561 Saturday at 01:00, not March's last Friday at 24:00. 562 563 Changes affecting past time stamps 564 565 Europe/Chisinau observed DST during 1990, and switched from +04 to 566 +03 at 1990-05-06 02:00, instead of switching from +03 to +02. 567 (Thanks to Stepan Golosunov.) 568 569 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not 570 KUYT/KUYST. (Thanks to Stepan Golosunov.) 571 572 Changes to code 573 574 tzselect's diagnostics and checking, and checktab.awk's checking, 575 have been improved. (Thanks to J William Piggott.) 576 577 tzcode now builds under MinGW. (Thanks to Ian Abbott and Esben Haabendal.) 578 579 tzselect now tests Julian-date TZ settings more accurately. 580 (Thanks to J William Piggott.) 581 582 Changes to commentary 583 584 Comments in zone tables have been improved. (Thanks to J William Piggott.) 585 586 tzselect again limits its menu comments so that menus fit on a 587 24x80 alphanumeric display. 588 589 A new web page tz-how-to.html. (Thanks to Bill Seymour.) 590 591 In the Theory file, the description of possible time zone abbreviations in 592 tzdata has been cleaned up, as the old description was unclear and 593 inconsistent. (Thanks to Alain Mouette for reporting the problem.) 594 595 596 Release 2016a - 2016-01-26 23:28:02 -0800 597 598 Changes affecting future time stamps 599 600 America/Cayman will not observe daylight saving this year after all. 601 Revert our guess that it would. (Thanks to Matt Johnson.) 602 603 Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00. 604 (Thanks to Alexander Krivenyshev.) 605 606 Asia/Tehran now has DST predictions for the year 2038 and later, 607 to be March 21 00:00 to September 21 00:00. This is likely better 608 than predicting no DST, albeit off by a day every now and then. 609 610 Changes affecting past and future time stamps 611 612 America/Metlakatla switched from PST all year to AKST/AKDT on 613 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.) 614 615 America/Santa_Isabel has been removed, and replaced with a 616 backward compatibility link to America/Tijuana. Its contents were 617 apparently based on a misreading of Mexican legislation. 618 619 Changes affecting past time stamps 620 621 Asia/Karachi's two transition times in 2002 were off by a minute. 622 (Thanks to Matt Johnson.) 623 624 Changes affecting build procedure 625 626 An installer can now combine leap seconds with use of the backzone file, 627 e.g., with 'make PACKRATDATA=backzone REDO=posix_right zones'. 628 The old 'make posix_packrat' rule is now marked as obsolescent. 629 (Thanks to Ian Abbott for an initial implementation.) 630 631 Changes affecting documentation and commentary 632 633 A new file LICENSE makes it easier to see that the code and data 634 are mostly public-domain. (Thanks to James Knight.) The three 635 non-public-domain files now use the current (3-clause) BSD license 636 instead of older versions of that license. 637 638 tz-link.htm mentions the BDE library (thanks to Andrew Paprocki), 639 CCTZ (thanks to Tim Parenti), TimeJones.com, and has a new section 640 on editing tz source files (with a mention of Sublime zoneinfo, 641 thanks to Gilmore Davidson). 642 643 The Theory and asia files now mention the 2015 book "The Global 644 Transformation of Time, 1870-1950", and cite a couple of reviews. 645 646 The America/Chicago entry now documents the informal use of US 647 central time in Fort Pierre, South Dakota. (Thanks to Rick 648 McDermid, Matt Johnson, and Steve Jones.) 649 650 651 Release 2015g - 2015-10-01 00:39:51 -0700 652 653 Changes affecting future time stamps 654 655 Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25. 656 (Thanks to Fatih.) 657 658 Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time. 659 (Thanks to Alexander Krivenyshev.) 660 661 Fiji's 2016 fall-back transition is scheduled for January 17, not 24. 662 (Thanks to Ken Rylander.) 663 664 Fort Nelson, British Columbia will not fall back on 2015-11-01. It has 665 effectively been on MST (-0700) since it advanced its clocks on 2015-03-08. 666 New zone America/Fort_Nelson. (Thanks to Matt Johnson.) 667 668 Changes affecting past time stamps 669 670 Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00. 671 672 Changes affecting code 673 674 localtime no longer mishandles America/Anchorage after 2037. 675 (Thanks to Bradley White for reporting the bug.) 676 677 On hosts with signed 32-bit time_t, localtime no longer mishandles 678 Pacific/Fiji after 2038-01-16 14:00 UTC. 679 680 The localtime module allows the variables 'timezone', 'daylight', 681 and 'altzone' to be in common storage shared with other modules, 682 and declares them in case the system <time.h> does not. 683 (Problems reported by Kees Dekker.) 684 685 On platforms with tm_zone, strftime.c now assumes it is not NULL. 686 This simplifies the code and is consistent with zdump.c. 687 (Problem reported by Christos Zoulas.) 688 689 Changes affecting documentation 690 691 The tzfile man page now documents that transition times denote the 692 starts (not the ends) of the corresponding time periods. 693 (Ambiguity reported by Bill Seymour.) 694 695 696 Release 2015f - 2015-08-10 18:06:56 -0700 697 698 Changes affecting future time stamps 699 700 North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) 701 The abbreviation remains "KST". (Thanks to Robert Elz.) 702 703 Uruguay no longer observes DST. (Thanks to Steffen Thorsen 704 and Pablo Camargo.) 705 706 Changes affecting past and future time stamps 707 708 Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. 709 (Thanks to Roman Tudos.) 710 711 Changes affecting data format and code 712 713 zic's '-y YEARISTYPE' option is no longer documented. The TYPE 714 field of a Rule line should now be '-'; the old values 'even', 715 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. 716 Although the implementation has not changed, these features do not 717 work in the default installation, they are not used in the data, 718 and they are now considered obsolescent. 719 720 zic now checks that two rules don't take effect at the same time. 721 (Thanks to Jon Skeet and Arthur David Olson.) Constraints on 722 simultaneity are now documented. 723 724 The two characters '%z' in a zone format now stand for the UTC 725 offset, e.g., '-07' for seven hours behind UTC and '+0530' for 726 five hours and thirty minutes ahead. This better supports time 727 zone abbreviations conforming to POSIX.1-2001 and later. 728 729 Changes affecting installed data files 730 731 Comments for America/Halifax and America/Glace_Bay have been improved. 732 (Thanks to Brian Inglis.) 733 734 Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, 735 Europe/Sofia, and Europe/Tallinn. This yields slightly smaller 736 installed data files for Europe/Simferopol and Europe/Tallinn. 737 It does not affect timestamps. (Thanks to Howard Hinnant.) 738 739 Changes affecting code 740 741 zdump and zic no longer warn about valid time zone abbreviations 742 like '-05'. 743 744 Some Visual Studio 2013 warnings have been suppressed. 745 (Thanks to Kees Dekker.) 746 747 'date' no longer sets the time of day and its -a, -d, -n and -t 748 options have been removed. Long obsolescent, the implementation 749 of these features had porting problems. Builders no longer need 750 to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. 751 (Thanks to Kees Dekker for pointing out the problem.) 752 753 Changes affecting documentation 754 755 The Theory file mentions naming issues earlier, as these seem to be 756 poorly publicized (thanks to Gilmore Davidson for reporting the problem). 757 758 tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). 759 760 Mention that Herbert Samuel introduced the term "Summer Time". 761 762 763 Release 2015e - 2015-06-13 10:56:02 -0700 764 765 Changes affecting future time stamps 766 767 Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, 768 not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.) 769 770 Assume Cayman Islands will observe DST starting next year, using US rules. 771 Although it isn't guaranteed, it is the most likely. 772 773 Changes affecting data format 774 775 The file 'iso3166.tab' now uses UTF-8, so that its entries can better 776 spell the names of land Islands, Cte d'Ivoire, and Runion. 777 778 Changes affecting code 779 780 When displaying data, tzselect converts it to the current locale's 781 encoding if the iconv command works. (Problem reported by random832.) 782 783 tzselect no longer mishandles Dominica, fixing a bug introduced 784 in Release 2014f. (Problem reported by Owen Leibman.) 785 786 zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\". 787 This fixes a bug introduced in Release 2014f. 788 (Problem reported by Leonardo Chiquitto.) 789 790 791 Release 2015d - 2015-04-24 08:09:46 -0700 792 793 Changes affecting future time stamps 794 795 Egypt will not observe DST in 2015 and will consider canceling it 796 permanently. For now, assume no DST indefinitely. 797 (Thanks to Ahmed Nazmy and Tim Parenti.) 798 799 Changes affecting past time stamps 800 801 America/Whitehorse switched from UT -09 to -08 on 1967-05-28, not 802 1966-07-01. Also, Yukon's time zone history is documented better. 803 (Thanks to Brian Inglis and Dennis Ferguson.) 804 805 Change affecting past and future time zone abbreviations 806 807 The abbreviations for Hawaii-Aleutian standard and daylight times 808 have been changed from HAST/HADT to HST/HDT, as per US Government 809 Printing Office style. This affects only America/Adak since 1983, 810 as America/Honolulu was already using the new style. 811 812 Changes affecting code 813 814 zic has some minor performance improvements. 815 816 817 Release 2015c - 2015-04-11 08:55:55 -0700 818 819 Changes affecting future time stamps 820 821 Egypt's spring-forward transition is at 24:00 on April's last Thursday, 822 not 00:00 on April's last Friday. 2015's transition will therefore be on 823 Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 824 apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 825 826 Changes affecting past time stamps 827 828 The following changes affect some pre-1991 Chile-related time stamps 829 in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 830 831 The 1910 transition was January 10, not January 1. 832 833 The 1918 transition was September 10, not September 1. 834 835 The UT -04 time observed from 1932 to 1942 is now considered to 836 be standard time, not year-round DST. 837 838 Santiago observed DST (UT -03) from 1946-07-15 through 839 1946-08-31, then reverted to standard time, then switched to -05 840 on 1947-04-01. 841 842 Assume transitions before 1968 were at 00:00, since we have no data 843 saying otherwise. 844 845 The spring 1988 transition was 1988-10-09, not 1988-10-02. 846 The fall 1990 transition was 1990-03-11, not 1990-03-18. 847 848 Assume no UTC offset change for Pacific/Easter on 1890-01-01, 849 and omit all transitions on Pacific/Easter from 1942 through 1946 850 since we have no data suggesting that they existed. 851 852 One more zone has been turned into a link, as it differed 853 from an existing zone only for older time stamps. As usual, 854 this change affects UTC offsets in pre-1970 time stamps only. 855 The zone's old contents have been moved to the 'backzone' file. 856 The affected zone is America/Montreal. 857 858 Changes affecting commentary 859 860 Mention the TZUpdater tool. 861 862 Mention "The Time Now". (Thanks to Brandon Ramsey.) 863 864 865 Release 2015b - 2015-03-19 23:28:11 -0700 866 867 Changes affecting future time stamps 868 869 Mongolia will start observing DST again this year, from the last 870 Saturday in March at 02:00 to the last Saturday in September at 00:00. 871 (Thanks to Ganbold Tsagaankhuu.) 872 873 Palestine will start DST on March 28, not March 27. Also, 874 correct the fall 2014 transition from September 26 to October 24. 875 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 876 877 Changes affecting past time stamps 878 879 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 880 regression. (Thanks to Stuart Bishop for reporting the problem.) 881 882 Some more zones have been turned into links, when they differed 883 from existing zones only for older time stamps. As usual, 884 these changes affect UTC offsets in pre-1970 time stamps only. 885 Their old contents have been moved to the 'backzone' file. 886 The affected zones are: America/Antigua, America/Cayman, 887 Pacific/Midway, and Pacific/Saipan. 888 889 Changes affecting time zone abbreviations 890 891 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 892 (Thanks to Hank W.) 893 894 Changes affecting code 895 896 Fix integer overflow bug in reference 'mktime' implementation. 897 (Problem reported by Jrg Richter.) 898 899 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 900 to be used in the same executable as standard-library time_t functions. 901 (Problems reported by Bradley White.) 902 903 Changes affecting commentary 904 905 Cite the recent Mexican decree changing Quintana Roo's time zone. 906 (Thanks to Carlos Ral Perasso.) 907 908 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 909 910 Update info about Mars time. 911 912 913 Release 2015a - 2015-01-29 22:35:20 -0800 914 915 Changes affecting future time stamps 916 917 The Mexican state of Quintana Roo, represented by America/Cancun, 918 will shift from Central Time with DST to Eastern Time without DST 919 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 920 921 Chile will not change clocks in April or thereafter; its new standard time 922 will be its old daylight saving time. This affects America/Santiago, 923 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 924 925 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 926 (Thanks to Tim Parenti.) 927 928 Changes affecting past time stamps 929 930 Iceland observed DST in 1919 and 1921, and its 1939 fallback 931 transition was Oct. 29, not Nov. 29. Remove incorrect data from 932 Shanks about time in Iceland between 1837 and 1908. 933 934 Some more zones have been turned into links, when they differed 935 from existing zones only for older time stamps. As usual, 936 these changes affect UTC offsets in pre-1970 time stamps only. 937 Their old contents have been moved to the 'backzone' file. 938 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 939 and Asia/Muscat. 940 941 Changes affecting code 942 943 tzalloc now scrubs time zone abbreviations compatibly with the way 944 that tzset always has, by replacing invalid bytes with '_' and by 945 shortening too-long abbreviations. 946 947 tzselect ports to POSIX awk implementations, no longer mishandles 948 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 949 settings to the user. (Thanks to Stefan Kuhn.) 950 951 Changes affecting build procedure 952 953 'make check' now checks for links to links in the data. 954 One such link (for Africa/Asmera) has been fixed. 955 (Thanks to Stephen Colebourne for pointing out the problem.) 956 957 Changes affecting commentary 958 959 The leapseconds file commentary now mentions the expiration date. 960 (Problem reported by Martin Burnicki.) 961 962 Update Mexican Library of Congress URL. 963 964 965 Release 2014j - 2014-11-10 17:37:11 -0800 966 967 Changes affecting current and future time stamps 968 969 Turks & Caicos' switch from US eastern time to UT -04 year-round 970 did not occur on 2014-11-02 at 02:00. It's currently scheduled 971 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 972 973 Changes affecting past time stamps 974 975 Many pre-1989 time stamps have been corrected for Asia/Seoul and 976 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 977 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 978 longer guess that Pyongyang mimicked Seoul time after World War II, 979 as this is politically implausible. 980 981 Some more zones have been turned into links, when they differed 982 from existing zones only for older time stamps. As usual, 983 these changes affect UTC offsets in pre-1970 time stamps only. 984 Their old contents have been moved to the 'backzone' file. 985 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 986 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 987 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 988 Indian/Mayotte. 989 990 Changes affecting commentary 991 992 The commentary is less enthusiastic about Shanks as a source, 993 and is more careful to distinguish UT from UTC. 994 995 996 Release 2014i - 2014-10-21 22:04:57 -0700 997 998 Changes affecting future time stamps 999 1000 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 1001 (Thanks to Ken Rylander for the heads-up.) Guess that future 1002 years will use a similar pattern. 1003 1004 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 1005 that plans to switch from UT +10 to +11 on 2014-12-28 at 02:00. 1006 (Thanks to Kiley Walbom for the heads-up.) 1007 1008 Changes affecting time zone abbreviations 1009 1010 Since Belarus is not changing its clocks even though Moscow is, 1011 the time zone abbreviation in Europe/Minsk is changing from FET 1012 to its more-traditional value MSK on 2014-10-26 at 01:00. 1013 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 1014 1015 The new abbreviation IDT stands for the pre-1976 use of UT +08 in 1016 Indochina, to distinguish it better from ICT (+07). 1017 1018 Changes affecting past time stamps 1019 1020 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 1021 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 1022 authoritative book). Asia/Ho_Chi_Minh has been added to 1023 zone1970.tab, to give tzselect users in Vietnam two choices, 1024 since north and south Vietnam disagreed after our 1970 cutoff. 1025 1026 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 1027 they differed from existing zones only for older time stamps. As 1028 usual, these changes affect pre-1970 time stamps only. Their old 1029 contents have been moved to the 'backzone' file. 1030 1031 Changes affecting code 1032 1033 The time-related library functions now set errno on failure, and 1034 some crashes in the new tzalloc-related library functions have 1035 been fixed. (Thanks to Christos Zoulas for reporting most of 1036 these problems and for suggesting fixes.) 1037 1038 If USG_COMPAT is defined and the requested timestamp is standard time, 1039 the tz library's localtime and mktime functions now set the extern 1040 variable timezone to a value appropriate for that timestamp; and 1041 similarly for ALTZONE, daylight saving time, and the altzone variable. 1042 This change is a companion to the tzname change in 2014h, and is 1043 designed to make timezone and altzone more compatible with tzname. 1044 1045 The tz library's functions now set errno to EOVERFLOW if they fail 1046 because the result cannot be represented. ctime and ctime_r now 1047 return NULL and set errno when a timestamp is out of range, rather 1048 than having undefined behavior. 1049 1050 Some bugs associated with the new 2014g functions have been fixed. 1051 This includes a bug that largely incapacitated the new functions 1052 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 1053 It also includes some uses of uninitialized variables after tzalloc. 1054 The new code uses the standard type 'ssize_t', which the Makefile 1055 now gives porting advice about. 1056 1057 Changes affecting commentary 1058 1059 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 1060 1061 1062 Release 2014h - 2014-09-25 18:59:03 -0700 1063 1064 Changes affecting past timestamps 1065 1066 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 1067 1068 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 1069 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 1070 1071 Some more zones have been turned into links, when they differed 1072 from existing zones only for older timestamps. As usual, 1073 these changes affect UTC offsets in pre-1970 timestamps only. 1074 Their old contents have been moved to the 'backzone' file. 1075 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 1076 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 1077 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 1078 1079 Changes affecting code 1080 1081 zdump -V and -v now output gmtoff= values on all platforms, 1082 not merely on platforms defining TM_GMTOFF. 1083 1084 The tz library's localtime and mktime functions now set tzname to a value 1085 appropriate for the requested timestamp, and zdump now uses this 1086 on platforms not defining TM_ZONE, fixing a 2014g regression. 1087 (Thanks to Tim Parenti for reporting the problem.) 1088 1089 The tz library no longer sets tzname if localtime or mktime fails. 1090 1091 zdump -c no longer mishandles transitions near year boundaries. 1092 (Thanks to Tim Parenti for reporting the problem.) 1093 1094 An access to uninitialized data has been fixed. 1095 (Thanks to Jrg Richter for reporting the problem.) 1096 1097 When THREAD_SAFE is defined, the code ports to the C11 memory model. 1098 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 1099 and two threads race to initialize data used by gmtime-like functions. 1100 (Thanks to Andy Heninger for reporting the problems.) 1101 1102 Changes affecting build procedure 1103 1104 'make check' now checks better for properly-sorted data. 1105 1106 Changes affecting documentation and commentary 1107 1108 zdump's gmtoff=N output is now documented, and its isdst=D output 1109 is now documented to possibly output D values other than 0 or 1. 1110 1111 zdump -c's treatment of years is now documented to use the 1112 Gregorian calendar and Universal Time without leap seconds, 1113 and its behavior at cutoff boundaries is now documented better. 1114 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 1115 1116 Programs are now documented to use the proleptic Gregorian calendar. 1117 (Thanks to Alan Barrett for the suggestion.) 1118 1119 Fractional-second GMT offsets have been documented for civil time 1120 in 19th-century Chennai, Jakarta, and New York. 1121 1122 1123 Release 2014g - 2014-08-28 12:31:23 -0700 1124 1125 Changes affecting future timestamps 1126 1127 Turks & Caicos is switching from US eastern time to UT -04 1128 year-round, modeled as a switch on 2014-11-02 at 02:00. 1129 [As noted in 2014j, this switch was later delayed.] 1130 1131 Changes affecting past timestamps 1132 1133 Time in Russia or the USSR before 1926 or so has been corrected by 1134 a few seconds in the following zones: Asia/Irkutsk, 1135 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 1136 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 1137 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 1138 Vladimir Karpinsky.) 1139 1140 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 1141 This affects 1911 timestamps in Africa/Bissau, Africa/Luanda, 1142 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 1143 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 1144 (Thanks to Stephen Colebourne for pointing to the decree.) 1145 1146 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 1147 1148 A new file 'backzone' contains data which may appeal to 1149 connoisseurs of old timestamps, although it is out of scope for 1150 the tz database, is often poorly sourced, and contains some data 1151 that is known to be incorrect. The new file is not recommended 1152 for ordinary use and its entries are not installed by default. 1153 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 1154 Isle of Man entries.) 1155 1156 Some more zones have been turned into links, when they differed 1157 from existing zones only for older timestamps. As usual, 1158 these changes affect UTC offsets in pre-1970 timestamps only. 1159 Their old contents have been moved to the 'backzone' file. 1160 The affected zones are: Africa/Bangui, Africa/Brazzaville, 1161 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 1162 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 1163 1164 Changes affecting code 1165 1166 Unless NETBSD_INSPIRED is defined to 0, the tz library now 1167 supplies functions for creating and using objects that represent 1168 time zones. The new functions are tzalloc, tzfree, localtime_rz, 1169 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 1170 time2posix_z. They are intended for performance: for example, 1171 localtime_rz (unlike localtime_r) is trivially thread-safe without 1172 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 1173 functions, and to Alan Barrett and Jonathan Lennox for helping to 1174 debug the change.) 1175 1176 zdump now builds with the tz library unless USE_LTZ is defined to 0, 1177 This lets zdump use tz features even if the system library lacks them. 1178 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 1179 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 1180 1181 zdump now uses localtime_rz if available, as it's significantly faster, 1182 and it can help zdump better diagnose invalid time zone names. 1183 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 1184 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 1185 not available, zdump now uses localtime_r and tzset if available, 1186 as this is a bit cleaner and faster than plain localtime. Compile 1187 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 1188 lacks these two functions. 1189 1190 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 1191 Although not needed for tz's own applications, which are single-threaded, 1192 this supports POSIX better if the tz library is used in multithreaded apps. 1193 1194 Some crashes have been fixed when zdump or the tz library is given 1195 invalid or outlandish input. 1196 1197 The tz library no longer mishandles leap seconds on platforms with 1198 unsigned time_t in time zones that lack ordinary transitions after 1970. 1199 1200 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 1201 already defined, to make it easier to configure on common platforms. 1202 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 1203 1204 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 1205 assumes that reading uninitialized memory yields garbage values 1206 but does not cause other problems such as traps. 1207 1208 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 1209 more likely to guess right for ambiguous timestamps near 1210 transitions where tm_isdst does not change. 1211 1212 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 1213 strftime_l for compatibility with recent versions of POSIX. 1214 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 1215 to 1 on recent POSIX versions, and to 0 otherwise. 1216 1217 tzselect -c now uses a hybrid distance measure that works better 1218 in Africa. (Thanks to Alan Barrett for noting the problem.) 1219 1220 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 1221 or when time_tz is defined. 1222 1223 When HAVE_UTMPX_H is set the 'date' command now builds on systems 1224 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 1225 the date it updates the wtmpx file if _PATH_WTMPX is defined. 1226 This affects GNU/Linux and similar systems. 1227 1228 For easier maintenance later, some C code has been simplified, 1229 some lint has been removed, and the code has been tweaked so that 1230 plain 'make' is more likely to work. 1231 1232 The C type 'bool' is now used for boolean values, instead of 'int'. 1233 1234 The long-obsolete LOCALE_HOME code has been removed. 1235 1236 The long-obsolete 'gtime' function has been removed. 1237 1238 Changes affecting build procedure 1239 1240 'zdump' no longer links in ialloc.o, as it's not needed. 1241 1242 'make check_time_t_alternatives' no longer assumes GNU diff. 1243 1244 Changes affecting distribution tarballs 1245 1246 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 1247 the tzdata tarball instead of the tzcode tarball, since they help 1248 maintain the data. The NEWS and Theory files are now also 1249 distributed in the tzdata tarball, as they're relevant for data. 1250 (Thanks to Alan Barrett for pointing this out.) Also, the 1251 leapseconds.awk file is no longer distributed in the tzcode 1252 tarball, since it belongs in the tzdata tarball (where 2014f 1253 inadvertently also distributed it). 1254 1255 Changes affecting documentation and commentary 1256 1257 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 1258 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 1259 for debugging it.) 1260 1261 The man pages have been updated to use function prototypes, 1262 to document thread-safe variants like localtime_r, and to document 1263 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 1264 mktime_z. 1265 1266 The fields in Link lines have been renamed to be more descriptive 1267 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 1268 and LINK-TO has become LINK-NAME. 1269 1270 tz-link.htm mentions the IETF's tzdist working group; Windows 1271 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 1272 1273 Some broken URLs have been fixed in the commentary. (Thanks to 1274 Lester Caine.) 1275 1276 Commentary about Philippines DST has been updated, and commentary 1277 on pre-1970 time in India has been added. 1278 1279 1280 Release 2014f - 2014-08-05 17:42:36 -0700 1281 1282 Changes affecting future timestamps 1283 1284 Russia will subtract an hour from most of its time zones on 2014-10-26 1285 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 1286 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 1287 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 1288 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 1289 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 1290 (Europe/Samara) are not changing their clocks. The changed zones are 1291 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 1292 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 1293 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 1294 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 1295 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 1296 but not its UTC offset. Two zones are added: Asia/Chita (split 1297 from Asia/Yakutsk, and also with two hours subtracted) and 1298 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 1299 subtracted). (Thanks to Tim Parenti for much of the above.) 1300 1301 Changes affecting time zone abbreviations 1302 1303 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 1304 and similarly for the other Australian zones. That is, for eastern 1305 standard and daylight saving time the abbreviations are AEST and AEDT 1306 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 1307 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 1308 This change does not affect UTC offsets, only time zone abbreviations. 1309 (Thanks to Rich Tibbett and many others.) 1310 1311 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UT +07) 1312 effective 2014-10-26 at 02:00 local time. 1313 1314 The time zone abbreviation for Xinjiang Time (observed in rmqi) 1315 has been changed from URUT to XJT. (Thanks to Luther Ma.) 1316 1317 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 1318 Similarly, prefer EET/EEST for eastern European time in Russia. 1319 1320 Change time zone abbreviations in (western) Samoa to use "ST" and 1321 "DT" suffixes, as this is more likely to match common practice. 1322 Prefix "W" to (western) Samoa time when its standard-time offset 1323 disagrees with that of American Samoa. 1324 1325 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 1326 1327 Time zone abbreviations have been updated for Japan's two time 1328 zones used 1896-1937. JWST now stands for Western Standard 1329 Time, and JCST for Central Standard Time (formerly this was CJT). 1330 These abbreviations are now used for time in Korea, Taiwan, 1331 and Sakhalin while controlled by Japan. 1332 1333 Changes affecting past timestamps 1334 1335 China's five zones have been simplified to two, since the post-1970 1336 differences in the other three seem to have been imaginary. The 1337 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 1338 removed; backwards-compatibility links still work, albeit with 1339 different behaviors for timestamps before May 1980. Asia/Urumqi's 1340 1980 transition to UT +08 has been removed, so that it is now at 1341 +06 and not +08. (Thanks to Luther Ma and to Alois Treindl; 1342 Treindl sent helpful translations of two papers by Guo Qingsheng.) 1343 1344 Some zones have been turned into links, when they differed from existing 1345 zones only for older UTC offsets where data entries were likely invented. 1346 These changes affect UTC offsets in pre-1970 timestamps only. This is 1347 similar to the change in release 2013e, except this time for western 1348 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 1349 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 1350 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 1351 Atlantic/St_Helena. This also affects the backwards-compatibility 1352 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 1353 Tim Parenti, and David Patte for reporting problems in earlier 1354 versions of this change.) 1355 1356 Asia/Shanghai's pre-standard-time UT offset has been changed from 1357 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 1358 transition to standard time has been changed from 1928 to 1901. 1359 1360 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 1361 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 1362 In 1946 it observed DST from 05-15 through 09-30; in 1947 1363 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 1364 (Thanks to Yu-Cheng Chuang.) 1365 1366 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 1367 1368 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 1369 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 1370 1371 Pacific/Pago_Pago has been changed from UT -11:30 to -11 for the 1372 period from 1911 to 1950. 1373 1374 Pacific/Chatham has been changed to New Zealand standard time plus 1375 45 minutes for the period before 1957, reflecting a 1956 remark in 1376 the New Zealand parliament. 1377 1378 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 1379 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 1380 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 1381 not 04-06 at 02:00; and there was no DST in 1920. 1382 1383 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 1384 1385 Time in Russia before 1927 or so has been corrected by a few seconds in 1386 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 1387 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 1388 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 1389 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 1390 1391 Changes affecting data format 1392 1393 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 1394 The new file's extended format allows multiple country codes per zone. 1395 The older file is still installed but is deprecated; its format is 1396 not changing and it will still be distributed for a while, but new 1397 applications should use the new file. 1398 1399 The new file format simplifies maintenance of obscure locations. 1400 To test this, it adds coverage for the Crozet Islands and the 1401 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 1402 1403 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 1404 It is still ASCII now, but commentary about the switch has been added. 1405 The new file 'zone1970.tab' already uses UTF-8. 1406 1407 Changes affecting code 1408 1409 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 1410 is defined. (Thanks to Elliott Hughes for reporting the problem.) 1411 1412 'zic' no longer mishandles input when ignoring case in locales that 1413 are not compatible with English, e.g., unibyte Turkish locales when 1414 compiled with HAVE_GETTEXT. 1415 1416 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 1417 they no longer use ASCII '-' as if it were a dash. 1418 1419 'zic' now rejects output file names that contain '.' or '..' components. 1420 (Thanks to Tim Parenti for reporting the problem.) 1421 1422 'zic -v' now warns about output file names that do not follow 1423 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 1424 David Olson for starting the ball rolling on this.) 1425 1426 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 1427 1428 Changes affecting build procedure 1429 1430 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 1431 (Thanks to John Cochran.) 1432 1433 Changes affecting documentation and commentary 1434 1435 The 'Theory' file documents legacy names, the longstanding 1436 exceptions to the POSIX-inspired file name rules. 1437 1438 The 'zic' documentation clarifies the role of time types when 1439 interpreting dates. (Thanks to Arthur David Olson.) 1440 1441 Documentation and commentary now prefer UTF-8 to US-ASCII, 1442 allowing the use of proper accents in foreign words and names. 1443 Code and data have not changed because of this. (Thanks to 1444 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 1445 this.) 1446 1447 Non-HTML documentation and commentary now use plain-text URLs instead of 1448 HTML insertions, and are more consistent about bracketing URLs when they 1449 are not already surrounded by white space. (Thanks to suggestions by 1450 Steffen Nurpmeso.) 1451 1452 There is new commentary about Xujiahui Observatory, the five time-zone 1453 project in China from 1918 to 1949, timekeeping in Japanese-occupied 1454 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 1455 warlord Jin Shuren in the data. 1456 1457 Commentary about the coverage of each Russian zone has been standardized. 1458 (Thanks to Tim Parenti). 1459 1460 There is new commentary about contemporary timekeeping in Ethiopia. 1461 1462 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 1463 1464 There is new commentary about time in Poland in 1919. 1465 1466 Proper credit has been given to DST inventor George Vernon Hudson. 1467 1468 Commentary about time in Metlakatla, AK and Resolute, NU has been 1469 improved, with a new source for the former. 1470 1471 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 1472 is uninhabited. 1473 1474 Commentary about permanent Antarctic bases has been updated. 1475 1476 Several typos have been corrected. (Thanks to Tim Parenti for 1477 contributing some of these fixes.) 1478 1479 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 1480 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 1481 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 1482 (Thanks to a heads-up from Dirkjan Ochtman.) 1483 1484 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 1485 have been removed. These obsolescent US Naval Observatory entries were no 1486 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 1487 1488 1489 Release 2014e - 2014-06-12 21:53:52 -0700 1490 1491 Changes affecting near-future timestamps 1492 1493 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 1494 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 1495 switch to standard time at 24:00 the last Thursday before Ramadan, and 1496 back to DST at 00:00 the first Friday after Ramadan. 1497 1498 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 1499 to Milamber Space Network.) Guess that from 2015 on Morocco will 1500 temporarily switch to standard time at 03:00 the last Saturday before 1501 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 1502 1503 Changes affecting past timestamps 1504 1505 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 1506 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 1507 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 1508 in 1991. (Thanks to Hank W. for reporting the problems.) 1509 1510 Changes affecting commentary 1511 1512 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 1513 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 1514 removes stale pointers to World Time Explorer and WORLDTIME. 1515 1516 1517 Release 2014d - 2014-05-27 21:34:40 -0700 1518 1519 Changes affecting code 1520 1521 zic no longer generates files containing timestamps before the Big Bang. 1522 This works around GNOME bug 730332 1523 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 1524 (Thanks to Leonardo Chiquitto for reporting the bug, and to 1525 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 1526 1527 Changes affecting documentation 1528 1529 tz-link.htm now mentions GNOME. 1530 1531 1532 Release 2014c - 2014-05-13 07:44:13 -0700 1533 1534 Changes affecting near-future timestamps 1535 1536 Egypt observes DST starting 2014-05-15 at 24:00. 1537 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 1538 Details have not been announced, except that DST will not be observed 1539 during Ramadan. Guess that DST will stop during the same Ramadan dates as 1540 Morocco, and that Egypt's future spring and fall transitions will be the 1541 same as 2010 when it last observed DST, namely April's last Friday at 1542 00:00 to September's last Thursday at 23:00 standard time. Also, guess 1543 that Ramadan transitions will be at 00:00 standard time. 1544 1545 Changes affecting code 1546 1547 zic now generates transitions for minimum time values, eliminating guesswork 1548 when handling low-valued timestamps. (Thanks to Arthur David Olson.) 1549 1550 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 1551 1552 Changes affecting commentary and documentation 1553 1554 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 1555 1556 1557 Release 2014b - 2014-03-24 21:28:50 -0700 1558 1559 Changes affecting near-future timestamps 1560 1561 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 1562 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 1563 1564 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 1565 Bengt-Inge Larsson.) This is currently an approximation; a better version 1566 will require the zic and localtime fixes mentioned below, and the plan is 1567 to wait for a while until at least the zic fixes propagate. 1568 1569 Changes affecting code 1570 1571 'zic' and 'localtime' no longer reject locations needing four transitions 1572 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 1573 Also, 'zic' avoids some unlikely failures due to integer overflow. 1574 1575 Changes affecting build procedure 1576 1577 'make check' now detects Rule lines defined but never used. 1578 The NZAQ rules, an instance of this problem, have been removed. 1579 1580 Changes affecting commentary and documentation 1581 1582 Fix Tuesday/Thursday typo in description of time in Israel. 1583 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 1584 1585 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 1586 to Donald MacQueen.) Instead, the Microsoft Windows Store app 1587 library supports them. 1588 1589 Add comments about Johnston Island time in the 1960s. 1590 (Thanks to Lyle McElhaney.) 1591 1592 Morocco's 2014 DST start will be as predicted. 1593 (Thanks to Sebastien Willemijns.) 1594 1595 1596 Release 2014a - 2014-03-07 23:30:29 -0800 1597 1598 Changes affecting near-future timestamps 1599 1600 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 1601 the heads-up, and to Tim Parenti for simplifying the update.) 1602 1603 Changes affecting past timestamps 1604 1605 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 1606 (Thanks to Steffen Thorsen.) 1607 1608 Ukraine switched from Moscow to Eastern European time on 1990-07-01 1609 (not 1992-01-01), and observed DST during the entire next winter. 1610 (Thanks to Vladimir in Moscow via Alois Treindl.) 1611 1612 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 1613 (Thanks to Avigdor Finkelstein.) 1614 1615 Changes affecting code 1616 1617 A uninitialized-storage bug in 'localtime' has been fixed. 1618 (Thanks to Logan Chien.) 1619 1620 Changes affecting the build procedure 1621 1622 The settings for 'make check_web' now default to Ubuntu 13.10. 1623 1624 Changes affecting commentary and documentation 1625 1626 The boundary of the US Pacific time zone is given more accurately. 1627 (Thanks to Alan Mintz.) 1628 1629 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 1630 1631 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 1632 1633 Better descriptions of countries with same time zone history as 1634 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 1635 1636 Several changes affect tz-link.htm, the main web page. 1637 1638 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 1639 David Braverman). 1640 1641 Mention xCal (Internet RFC 6321) and jCal. 1642 1643 Microsoft has some support for tz database names. 1644 1645 CLDR data formats include both XML and JSON. 1646 1647 Mention Maggiolo's map of solar vs standard time. 1648 (Thanks to Arthur David Olson.) 1649 1650 Mention TZ4Net. (Thanks to Matt Johnson.) 1651 1652 Mention the timezone-olson Haskell package. 1653 1654 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 1655 1656 Remove moribund links to daylight-savings-time.info and to 1657 Simple Timer + Clocks. 1658 1659 Update two links. (Thanks to Oscar van Vlijmen.) 1660 1661 Fix some formatting glitches, e.g., remove random newlines from 1662 abbr elements' title attributes. 1663 1664 1665 Release 2013i - 2013-12-17 07:25:23 -0800 1666 1667 Changes affecting near-future timestamps: 1668 1669 Jordan switches back to standard time at 00:00 on December 20, 2013. 1670 The 2006-2011 transition schedule is planned to resume in 2014. 1671 (Thanks to Steffen Thorsen.) 1672 1673 Changes affecting past timestamps: 1674 1675 In 2004, Cuba began DST on March 28, not April 4. 1676 (Thanks to Steffen Thorsen.) 1677 1678 Changes affecting code 1679 1680 The compile-time flag NOSOLAR has been removed, as nowadays the 1681 benefit of slightly shrinking runtime table size is outweighed by the 1682 cost of disallowing potential future updates that exceed old limits. 1683 1684 Changes affecting documentation and commentary 1685 1686 The files solar87, solar88, and solar89 are no longer distributed. 1687 They were a negative experiment - that is, a demonstration that 1688 tz data can represent solar time only with some difficulty and error. 1689 Their presence in the distribution caused confusion, as Riyadh 1690 civil time was generally not solar time in those years. 1691 1692 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 1693 1694 1695 Release 2013h - 2013-10-25 15:32:32 -0700 1696 1697 Changes affecting current and future timestamps: 1698 1699 Libya has switched its UT offset back to +02 without DST, instead 1700 of +01 with DST. (Thanks to Even Scharning.) 1701 1702 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 1703 (Thanks to Gwillim Law.) 1704 1705 Changes affecting future timestamps: 1706 1707 Acre and (we guess) western Amazonas will switch from UT -04 to -05 1708 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 1709 (Thanks to Steffen Thorsen.) 1710 1711 Add entries for DST transitions in Morocco in the year 2038. 1712 This avoids some year-2038 glitches introduced in 2013g. 1713 (Thanks to Yoshito Umaoka for reporting the problem.) 1714 1715 Changes affecting API 1716 1717 The 'tzselect' command no longer requires the 'select' command, 1718 and should now work with /bin/sh on more platforms. It also works 1719 around a bug in BusyBox awk before version 1.21.0. (Thanks to 1720 Patrick 'P. J.' McDermott and Alan Barrett.) 1721 1722 Changes affecting code 1723 1724 Fix localtime overflow bugs with 32-bit unsigned time_t. 1725 1726 zdump no longer assumes sscanf returns maximal values on overflow. 1727 1728 Changes affecting the build procedure 1729 1730 The builder can specify which programs to use, if any, instead of 1731 'ar' and 'ranlib', and libtz.a is now built locally before being 1732 installed. (Thanks to Michael Forney.) 1733 1734 A dependency typo in the 'zdump' rule has been fixed. 1735 (Thanks to Andrew Paprocki.) 1736 1737 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 1738 work as specified by POSIX.2-1992 or later; this is portable nowadays. 1739 1740 'make clean' no longer removes 'leapseconds', since it's 1741 host-independent and is part of the distribution. 1742 1743 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 1744 1745 Changes affecting documentation and commentary 1746 1747 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 1748 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 1749 1750 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 1751 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 1752 longer maintained) and for old advisories. SOFA now does C. 1753 1754 Release 2013g - 2013-09-30 21:08:26 -0700 1755 1756 Changes affecting current and near-future timestamps 1757 1758 Morocco now observes DST from the last Sunday in March to the last 1759 Sunday in October, not April to September respectively. (Thanks 1760 to Steffen Thorsen.) 1761 1762 Changes affecting 'zic' 1763 1764 'zic' now runs on platforms that lack both hard links and symlinks. 1765 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 1766 Also, fix some bugs on platforms that lack hard links but have symlinks. 1767 1768 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 1769 to predict the far future, fixing a bug introduced in 2013e. 1770 1771 Changes affecting the build procedure 1772 1773 The 'leapseconds' file is again put into the tzdata tarball. 1774 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 1775 Matt Burgess and Ian Abbott.) The timestamps of these and other 1776 dependent files in tarballs are adjusted more consistently. 1777 1778 Changes affecting documentation and commentary 1779 1780 The README file is now part of the data tarball as well as the code. 1781 It now states that files are public domain unless otherwise specified. 1782 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 1783 Its details about the 1989 release moved to a place of honor near 1784 the end of NEWS. 1785 1786 1787 Release 2013f - 2013-09-24 23:37:36 -0700 1788 1789 Changes affecting near-future timestamps 1790 1791 Tocantins will very likely not observe DST starting this spring. 1792 (Thanks to Steffen Thorsen.) 1793 1794 Jordan will likely stay at UT +03 indefinitely, and will not fall 1795 back this fall. 1796 1797 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 1798 1799 Changes affecting API 1800 1801 The types of the global variables 'timezone' and 'altzone' (if present) 1802 have been changed back to 'long'. This is required for 'timezone' 1803 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 1804 These variables were originally 'long' in the tz code, but were 1805 mistakenly changed to 'time_t' in 1987; nobody reported the 1806 incompatibility until now. The difference matters on x32, where 1807 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 1808 1809 Changes affecting the build procedure 1810 1811 Avoid long strings in leapseconds.awk to work around a mawk bug. 1812 (Thanks to Cyril Baurand.) 1813 1814 Changes affecting documentation and commentary 1815 1816 New file 'NEWS' that contains release notes like this one. 1817 1818 Paraguay's law does not specify DST transition time; 00:00 is customary. 1819 (Thanks to Waldemar Villamayor-Venialbo.) 1820 1821 Minor capitalization fixes. 1822 1823 Changes affecting version-control only 1824 1825 The experimental GitHub repository now contains annotated and 1826 signed tags for recent releases, e.g., '2013e' for Release 2013e. 1827 Releases are tagged starting with 2012e; earlier releases were 1828 done differently, and tags would either not have a simple name or 1829 not exactly match what was released. 1830 1831 'make set-timestamps' is now simpler and a bit more portable. 1832 1833 1834 Release 2013e - 2013-09-19 23:50:04 -0700 1835 1836 Changes affecting near-future timestamps 1837 1838 This year Fiji will start DST on October 27, not October 20. 1839 (Thanks to David Wheeler for the heads-up.) For now, guess that 1840 Fiji will continue to spring forward the Sunday before the fourth 1841 Monday in October. 1842 1843 Changes affecting current and future time zone abbreviations 1844 1845 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 1846 time zone abbreviations since 1932. (Thanks to George Ziegler, 1847 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 1848 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 1849 Asia/Makassar, and Asia/Pontianak. 1850 1851 Use ART (UT -03, standard time), rather than WARST (also -03, but 1852 daylight saving time) for San Luis, Argentina since 2009. 1853 1854 Changes affecting Godthb timestamps after 2037 if version mismatch 1855 1856 Allow POSIX-like TZ strings where the transition time's hour can 1857 range from -167 through 167, instead of the POSIX-required 0 1858 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 1859 new Fiji rules. This is a more-compact way to represent 1860 far-future timestamps for America/Godthab, America/Santiago, 1861 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1862 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1863 this change. (Derived from a suggestion by Arthur David Olson.) 1864 1865 Allow POSIX-like TZ strings where daylight saving time is in 1866 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1867 Argentina Summer Time all year. This supports a more-compact way 1868 to represent the 2013d data for America/Argentina/San_Luis. 1869 Because of the change for San Luis noted above this change does not 1870 affect the current data. (Thanks to Andrew Main (Zefram) for 1871 suggestions that improved this change.) 1872 1873 Where these two TZ changes take effect, there is a minor extension 1874 to the tz file format in that it allows new values for the 1875 embedded TZ-format string, and the tz file format version number 1876 has therefore been increased from 2 to 3 as a precaution. 1877 Version-2-based client code should continue to work as before for 1878 all timestamps before 2038. Existing version-2-based client code 1879 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1880 files, and typically works in practice even for timestamps after 1881 2037; the only known exception is America/Godthab. 1882 1883 Changes affecting timestamps before 1970 1884 1885 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1886 some errors before 1947. 1887 1888 Some zones have been turned into links, when they differ from existing 1889 zones only in older data entries that were likely invented or that 1890 differ only in LMT or transitions from LMT. These changes affect 1891 only timestamps before 1943. The affected zones are: 1892 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1893 America/Grenada, America/Guadeloupe, America/Marigot, 1894 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1895 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1896 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1897 confirming that the old Europe/Vaduz zone was wrong and the new 1898 link is better for WWII-era times.) 1899 1900 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1901 America/Cayman, America/Jamaica and America/Grand_Turk timestamps 1902 from 1890 to 1912. 1903 1904 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1905 This affects Europe/Zurich timestamps from 1853 to 1894. (Thanks 1906 to Alois Treindl). 1907 1908 Change the date of the circa-1850 Zurich transition from 1849-09-12 1909 to 1853-07-16, overriding Shanks with data from Messerli about 1910 postal and telegraph time in Switzerland. 1911 1912 Changes affecting time zone abbreviations before 1970 1913 1914 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1915 as Jakarta was called Batavia back then. 1916 1917 Changes affecting API 1918 1919 The 'zic' command now outputs a dummy transition when far-future 1920 data can't be summarized using a TZ string, and uses a 402-year 1921 window rather than a 400-year window. For the current data, this 1922 affects only the Asia/Tehran file. It does not affect any of the 1923 timestamps that this file represents, so zdump outputs the same 1924 information as before. (Thanks to Andrew Main (Zefram).) 1925 1926 The 'date' command has a new '-r' option, which lets you specify 1927 the integer time to display, a la FreeBSD. 1928 1929 The 'tzselect' command has two new options '-c' and '-n', which lets you 1930 select a zone based on latitude and longitude. 1931 1932 The 'zic' command's '-v' option now warns about constructs that 1933 require the new version-3 binary file format. (Thanks to Arthur 1934 David Olson for the suggestion.) 1935 1936 Support for floating-point time_t has been removed. 1937 It was always dicey, and POSIX no longer requires it. 1938 (Thanks to Eric Blake for suggesting to the POSIX committee to 1939 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1940 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1941 bugs and elucidating some of the corners of the old floating-point 1942 implementation.) 1943 1944 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1945 changed back to the old practice of using 'long' to represent UT 1946 offsets. This had been inadvertently and mistakenly changed to 1947 'int_fast32_t'. (Thanks to Christos Zoulas.) 1948 1949 The code avoids undefined behavior on integer overflow in some 1950 more places, including gmtime, localtime, mktime and zdump. 1951 1952 Changes affecting the zdump utility 1953 1954 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1955 "UTC" does not make sense for timestamps that predate the introduction 1956 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1957 for clarifying UT vs UTC.) 1958 1959 Data changes affecting behavior of tzselect and similar programs 1960 1961 Country code BQ is now called the more-common name "Caribbean Netherlands" 1962 rather than the more-official "Bonaire, St Eustatius & Saba". 1963 1964 Remove from zone.tab the names America/Montreal, America/Shiprock, 1965 and Antarctica/South_Pole, as they are equivalent to existing 1966 same-country-code zones for post-1970 timestamps. The data entries for 1967 these names are unchanged, so the names continue to work as before. 1968 1969 Changes affecting code internals 1970 1971 zic -c now runs way faster on 64-bit hosts when given large numbers. 1972 1973 zic now uses vfprintf to avoid allocating and freeing some memory. 1974 1975 tzselect now computes the list of continents from the data, 1976 rather than have it hard-coded. 1977 1978 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1979 1980 Changes affecting the build procedure 1981 1982 The 'leapseconds' file is now generated automatically from a 1983 new file 'leap-seconds.list', which is a copy of 1984 <ftp://time.nist.gov/pub/leap-seconds.list>. 1985 A new source file 'leapseconds.awk' implements this. 1986 The goal is simplification of the future maintenance of 'leapseconds'. 1987 1988 When building the 'posix' or 'right' subdirectories, if the 1989 subdirectory would be a copy of the default subdirectory, it is 1990 now made a symbolic link if that is supported. This saves about 1991 2 MB of file system space. 1992 1993 The links America/Shiprock and Antarctica/South_Pole have been 1994 moved to the 'backward' file. This affects only nondefault builds 1995 that omit 'backward'. 1996 1997 Changes affecting version-control only 1998 1999 .gitignore now ignores 'date'. 2000 2001 Changes affecting documentation and commentary 2002 2003 Changes to the 'tzfile' man page 2004 2005 It now mentions that the binary file format may be extended in 2006 future versions by appending data. 2007 2008 It now refers to the 'zdump' and 'zic' man pages. 2009 2010 Changes to the 'zic' man page 2011 2012 It lists conditions that elicit a warning with '-v'. 2013 2014 It says that the behavior is unspecified when duplicate names 2015 are given, or if the source of one link is the target of another. 2016 2017 Its examples are updated to match the latest data. 2018 2019 The definition of white space has been clarified slightly. 2020 (Thanks to Michael Deckers.) 2021 2022 Changes to the 'Theory' file 2023 2024 There is a new section about the accuracy of the tz database, 2025 describing the many ways that errors can creep in, and 2026 explaining why so many of the pre-1970 timestamps are wrong or 2027 misleading (thanks to Steve Allen, Lester Caine, and Garrett 2028 Wollman for discussions that contributed to this). 2029 2030 The 'Theory' file describes LMT better (this follows a 2031 suggestion by Guy Harris). 2032 2033 It refers to the 2013 edition of POSIX rather than the 2004 edition. 2034 2035 It's mentioned that excluding 'backward' should not affect the 2036 other data, and it suggests at least one zone.tab name per 2037 inhabited country (thanks to Stephen Colebourne). 2038 2039 Some longstanding restrictions on names are documented, e.g., 2040 'America/New_York' precludes 'America/New_York/Bronx'. 2041 2042 It gives more reasons for the 1970 cutoff. 2043 2044 It now mentions which time_t variants are supported, such as 2045 signed integer time_t. (Thanks to Paul Goyette for reporting 2046 typos in an experimental version of this change.) 2047 2048 (Thanks to Philip Newton for correcting typos in these changes.) 2049 2050 Documentation and commentary is more careful to distinguish UT in 2051 general from UTC in particular. (Thanks to Steve Allen.) 2052 2053 Add a better source for the Zurich 1894 transition. 2054 (Thanks to Pierre-Yves Berger.) 2055 2056 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 2057 2058 2059 Release 2013d - 2013-07-05 07:38:01 -0700 2060 2061 Changes affecting future timestamps: 2062 2063 Morocco's midsummer transitions this year are July 7 and August 10, 2064 not July 9 and August 8. (Thanks to Andrew Paprocki.) 2065 2066 Israel now falls back on the last Sunday of October. 2067 (Thanks to Ephraim Silverberg.) 2068 2069 Changes affecting past timestamps: 2070 2071 Specify Jerusalem's location more precisely; this changes the pre-1880 2072 times by 2 s. 2073 2074 Changing affecting metadata only: 2075 2076 Fix typos in the entries for country codes BQ and SX. 2077 2078 Changes affecting code: 2079 2080 Rework the code to fix a bug with handling Australia/Macquarie on 2081 32-bit hosts (thanks to Arthur David Olson). 2082 2083 Port to platforms like NetBSD, where time_t can be wider than long. 2084 2085 Add support for testing time_t types other than the system's. 2086 Run 'make check_time_t_alternatives' to try this out. 2087 Currently, the tests fail for unsigned time_t; 2088 this should get fixed at some point. 2089 2090 Changes affecting documentation and commentary: 2091 2092 Deemphasize the significance of national borders. 2093 2094 Update the zdump man page. 2095 2096 Remove obsolete NOID comment (thanks to Denis Excoffier). 2097 2098 Update several URLs and comments in the web pages. 2099 2100 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 2101 2102 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 2103 2104 2105 Release 2013c - 2013-04-19 16:17:40 -0700 2106 2107 Changes affecting current and future timestamps: 2108 2109 Palestine observed DST starting March 29, 2013. (Thanks to 2110 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 2111 with the predicted rules being the last Thursday in March at 24:00 2112 to the first Friday on or after September 21 at 01:00. 2113 2114 Assume that the recent change to Paraguay's DST rules is permanent, 2115 by moving the end of DST to the 4th Sunday in March every year. 2116 (Thanks to Carlos Ral Perasso.) 2117 2118 Changes affecting past timestamps: 2119 2120 Fix some historical data for Palestine to agree with that of 2121 timeanddate.com, as follows: 2122 2123 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 2124 00:00 Apr 1. 2125 2126 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 2127 02:00. 2128 2129 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 2130 2131 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 2132 2133 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 2134 2135 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 2136 2137 Fix times of habitation for Macquarie to agree with the Tasmania 2138 Parks & Wildlife Service history, which indicates that permanent 2139 habitation was 1899-1919 and 1948 on. 2140 2141 Changing affecting metadata only: 2142 2143 Macquarie Island is politically part of Australia, not Antarctica. 2144 (Thanks to Tobias Conradi.) 2145 2146 Sort Macquarie more-consistently with other parts of Australia. 2147 (Thanks to Tim Parenti.) 2148 2149 2150 Release 2013b - 2013-03-10 22:33:40 -0700 2151 2152 Changes affecting current and future timestamps: 2153 2154 Haiti uses US daylight-saving rules this year, and presumably future years. 2155 This changes timestamps starting today. (Thanks to Steffen Thorsen.) 2156 2157 Paraguay will end DST on March 24 this year. 2158 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 2159 2160 Morocco does not observe DST during Ramadan; 2161 try to predict Ramadan in Morocco as best we can. 2162 (Thanks to Erik Homoet for the heads-up.) 2163 2164 Changes affecting commentary: 2165 2166 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 2167 Update URL for Solaris. Mention Internet RFC 6557. 2168 Update Internet RFCs 2445->5545, 2822->5322. 2169 Switch from FTP to HTTP for Internet RFCs. 2170 2171 2172 Release 2013a - 2013-02-27 09:20:35 -0800 2173 2174 Change affecting binary data format: 2175 2176 The zone offset at the end of version-2-format zone files is now 2177 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 2178 2179 Changes affecting current and future timestamps: 2180 2181 Chile's 2013 rules, and we guess rules for 2014 and later, will be 2182 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 2183 (Thanks to Steffen Thorsen and Robert Elz.) 2184 2185 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 2186 (Thanks to Tobias Conradi and Arthur David Olson.) 2187 2188 Many changes affect historical timestamps before 1940. 2189 These were deduced from: Milne J. Civil time. Geogr J. 1899 2190 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 2191 2192 Changes affecting the code: 2193 2194 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 2195 the data). (Thanks to Arthur David Olson.) 2196 2197 Fix localtime bug when time_t is unsigned and data files were generated 2198 by a signed time_t system. (Thanks to Doug Bailey for reporting and 2199 to Arthur David Olson for fixing.) 2200 2201 Allow the email address for bug reports to be set by the packager. 2202 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 2203 2204 Update HTML checking to be compatible with Ubuntu 12.10. 2205 2206 Check that files are a safe subset of ASCII. At some point we may 2207 relax this requirement to a safe subset of UTF-8. Without the 2208 check, some non-UTF-8 encodings were leaking into the distribution. 2209 2210 Commentary changes: 2211 2212 Restore a comment about copyright notices that was inadvertently deleted. 2213 (Thanks to Arthur David Olson.) 2214 2215 Improve the commentary about which districts observe what times 2216 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 2217 2218 Add web page links to tz.js. 2219 2220 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 2221 2222 2223 Release 2012j - 2012-11-12 18:34:49 -0800 2224 2225 Libya moved to CET this weekend, but with DST planned next year. 2226 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 2227 2228 Signatures now have the extension .asc, not .sign, as that's more 2229 standard. (Thanks to Phil Pennock.) 2230 2231 The output of 'zdump --version', and of 'zic --version', now 2232 uses a format that is more typical for --version. 2233 (Thanks to Joseph S. Myers.) 2234 2235 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 2236 now uses tz (a] iana.org rather than the old elsie address. 2237 2238 zic -v now complains about abbreviations that are less than 3 2239 or more than 6 characters, as per Posix. Formerly, it checked 2240 for abbreviations that were more than 3. 2241 2242 'make public' no longer puts its temporary directory under /tmp, 2243 and uses the just-built zic rather than the system zic. 2244 2245 Various fixes to documentation and commentary. 2246 2247 2248 Release 2012i - 2012-11-03 12:57:09 -0700 2249 2250 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 2251 2252 Linker flags can now be specified via LDFLAGS. 2253 AWK now defaults to 'awk', not 'nawk'. 2254 The shell in tzselect now defaults to /bin/bash, but this can 2255 be overridden by specifying KSHELL. 2256 The main web page now mentions the unofficial GitHub repository. 2257 (Thanks to Mike Frysinger.) 2258 2259 Tarball signatures can now be built by running 'make signatures'. 2260 There are also new makefile rules 'tarballs', 'check_public', and 2261 separate makefile rules for each tarball and signature file. 2262 A few makefile rules are now more portable to strict POSIX. 2263 2264 The main web page now lists the canonical IANA URL. 2265 2266 2267 Release 2012h - 2012-10-26 22:49:10 -0700 2268 2269 Bahia no longer has DST. (Thanks to Kelley Cook.) 2270 2271 Tocantins has DST. (Thanks to Rodrigo Severo.) 2272 2273 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 2274 2275 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 2276 2277 Web page updates. 2278 2279 More C modernization, except that at Arthur David Olson's suggestion 2280 the instances of 'register' were kept. 2281 2282 2283 Release 2012g - 2012-10-17 20:59:45 -0700 2284 2285 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 2286 2287 Palestine fall 2012. (Thanks to Steffen Thorsen.) 2288 2289 Assume C89. 2290 2291 To attack the version-number problem, this release ships the file 2292 'Makefile' (which contains the release number) in both the tzcode and 2293 the tzdata tarballs. The two Makefiles are identical, and should be 2294 identical in any matching pair of tarballs, so it shouldn't matter 2295 which order you extract the tarballs. Perhaps we can come up with a 2296 better version-number scheme at some point; this scheme does have the 2297 virtue of not adding more files. 2298 2299 2300 Release 2012f - 2012-09-12 23:17:03 -0700 2301 2302 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 2303 20 this year. (Thanks to Steffen Thorsen.) 2304 2305 2306 Release 2012e - 2012-08-02 20:44:55 -0700 2307 2308 * australasia (Pacific/Fakaofo): Tokelau is UT +13, not +14. 2309 (Thanks to Steffen Thorsen.) 2310 2311 * Use a single version number for both code and data. 2312 2313 * .gitignore: New file. 2314 2315 * Remove trailing white space. 2316 2317 2318 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 2319 2320 Changes for Morocco's timestamps, which take effect in a couple of 2321 hours, along with infrastructure changes to accommodate how the tz 2322 code and data are released on IANA. 2323 2324 2325 Release data2012c - 2012-03-27 12:17:25 -0400 2326 2327 africa 2328 Summer time changes for Morocco (to start late April 2012) 2329 2330 asia 2331 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 2332 2333 northamerica 2334 Haiti following US/Canada rules for 2012 (and we're assuming, 2335 for now anyway, for the future). 2336 2337 2338 Release 2012b - 2012-03-02 12:29:15 +0700 2339 2340 There is just one change to tzcode2012b (compared with 2012a): 2341 the Makefile that was accidentally included with 2012a has been 2342 replaced with the version that should have been there, which is 2343 identical with the previous version (from tzcode2011i). 2344 2345 There are just two changes in tzdata2012b compared with 2012a. 2346 2347 Most significantly, summer time in Cuba has been delayed 3 weeks 2348 (now starts April 1 rather than March 11). Since Mar 11 (the old start 2349 date, as listed in 2012a) is just a little over a week away, this 2350 change is urgent. 2351 2352 Less importantly, an excess tab in one of the changes in zone.tab 2353 in 2012a has been removed. 2354 2355 2356 Release 2012a - 2012-03-01 18:28:10 +0700 2357 2358 The changes in tzcode2012a (compared to the previous version, 2011i) 2359 are entirely to the README and tz-art.htm and tz-link.htm files, if 2360 none of those concern you, you can ignore the code update. The changes 2361 reflect the changed addresses for the mailing list and the code and 2362 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 2363 has been added to tz-link.htm). 2364 2365 In tzdata2012a (compared to the previous release, which was 2011n) 2366 the major changes are: 2367 Chile 2011/2012 and 2012/2013 summer time date adjustments. 2368 Falkland Islands onto permanent summer time (we're assuming for the 2369 foreseeable future, though 2012 is all we're fairly certain of.) 2370 Armenia has abolished Summer Time. 2371 Tokelau jumped the International Date Line back last December 2372 (just the same as their near neighbour, Samoa). 2373 America/Creston is a new zone for a small area of British Columbia 2374 There will be a leapsecond 2012-06-30 23:59:60 UTC. 2375 2376 Other minor changes are: 2377 Corrections to 1918 Canadian summer time end dates. 2378 Updated URL for UK time zone history (in comments) 2379 A few typos in Le Corre's list of free French place names (comments) 2380 2381 2382 Release data2011n - 2011-10-30 14:57:54 +0700 2383 2384 There are three changes of note - most urgently, Cuba (America/Havana) 2385 has extended summer time by two weeks, now to end on Nov 13, rather than 2386 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 2387 (Europe/Tiraspol) decided not to split from the rest of Moldova after 2388 all, and consequently that zone has been removed (again) and reinstated 2389 in the "backward" file as a link to Europe/Chisinau. And third, the 2390 end date for Fiji's summer time this summer was moved forward from the 2391 earlier planned Feb 26, to Jan 22. 2392 2393 Apart from that, Moldova (MD) returns to a single entry in zone.tab 2394 (and the incorrect syntax that was in the 2011m version of that file 2395 is so fixed - it would have been fixed in a different way had this 2396 change not happened - that's the "missing" sccs version id). 2397 2398 2399 Release data2011m - 2011-10-24 21:42:16 +0700 2400 2401 In particular, the typos in comments in the data (2011-11-17 should have 2402 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 2403 Tim Parenti noted) have been fixed, and the change for Ukraine has been 2404 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 2405 Tim Parenti, and also Denys Gavrysh) 2406 2407 In addition, I added Europe/Tiraspol to zone.tab. 2408 2409 This time, all the files have new version numbers... (including the files 2410 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 2411 version numbers there...) 2412 2413 2414 Release data2011l - 2011-10-10 11:15:43 +0700 2415 2416 There are just 2 changes that cause different generated tzdata files from 2417 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 2418 is included, but commented out. Compared with the diff I sent out last week, 2419 this version also includes attributions for the sources for the changes 2420 (in much the same format as ado used, but the html tags have not been 2421 checked, verified, or used in any way at all, so if there are errors there, 2422 please let me know.) 2423 2424 2425 Release data2011k - 2011-09-20 17:54:03 -0400 2426 2427 [not summarized] 2428 2429 2430 Release data2011j - 2011-09-12 09:22:49 -0400 2431 2432 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 2433 Tanzania); there are also two spelling corrections to comments in 2434 the australasia file (with thanks to Christos Zoulas). 2435 2436 2437 Release 2011i - 2011-08-29 05:56:32 -0400 2438 2439 [not summarized] 2440 2441 2442 Release data2011h - 2011-06-15 18:41:48 -0400 2443 2444 Russia and Curaao changes 2445 2446 2447 Release 2011g - 2011-04-25 09:07:22 -0400 2448 2449 update the rules for Egypt to reflect its abandonment of DST this year 2450 2451 2452 Release 2011f - 2011-04-06 17:14:53 -0400 2453 2454 [not summarized] 2455 2456 2457 Release 2011e - 2011-03-31 16:04:38 -0400 2458 2459 Morocco, Chile, and tz-link changes 2460 2461 2462 Release 2011d - 2011-03-14 09:18:01 -0400 2463 2464 changes that impact present-day timestamps in Cuba, Samoa, and Turkey 2465 2466 2467 Release 2011c - 2011-03-07 09:30:09 -0500 2468 2469 These do affect current timestamps in Chile and Annette Island, Canada. 2470 2471 2472 Release 2011b - 2011-02-07 08:44:50 -0500 2473 2474 [not summarized] 2475 2476 2477 Release 2011a - 2011-01-24 10:30:16 -0500 2478 2479 [not summarized] 2480 2481 2482 Release data2010o - 2010-11-01 09:18:23 -0400 2483 2484 change to the end of DST in Fiji in 2011 2485 2486 2487 Release 2010n - 2010-10-25 08:19:17 -0400 2488 2489 [not summarized] 2490 2491 2492 Release 2010m - 2010-09-27 09:24:48 -0400 2493 2494 Hong Kong, Vostok, and zic.c changes 2495 2496 2497 Release 2010l - 2010-08-16 06:57:25 -0400 2498 2499 [not summarized] 2500 2501 2502 Release 2010k - 2010-07-26 10:42:27 -0400 2503 2504 [not summarized] 2505 2506 2507 Release 2010j - 2010-05-10 09:07:48 -0400 2508 2509 changes for Baha de Banderas and for version naming 2510 2511 2512 Release data2010i - 2010-04-16 18:50:45 -0400 2513 2514 the end of DST in Morocco on 2010-08-08 2515 2516 2517 Release data2010h - 2010-04-05 09:58:56 -0400 2518 2519 [not summarized] 2520 2521 2522 Release data2010g - 2010-03-24 11:14:53 -0400 2523 2524 [not summarized] 2525 2526 2527 Release 2010f - 2010-03-22 09:45:46 -0400 2528 2529 [not summarized] 2530 2531 2532 Release data2010e - 2010-03-08 14:24:27 -0500 2533 2534 corrects the Dhaka bug found by Danvin Ruangchan 2535 2536 2537 Release data2010d - 2010-03-06 07:26:01 -0500 2538 2539 [not summarized] 2540 2541 2542 Release 2010c - 2010-03-01 09:20:58 -0500 2543 2544 changes including KRE's suggestion for earlier initialization of 2545 "goahead" and "goback" structure elements 2546 2547 2548 Release code2010a - 2010-02-16 10:40:04 -0500 2549 2550 [not summarized] 2551 2552 2553 Release data2010b - 2010-01-20 12:37:01 -0500 2554 2555 Mexico changes 2556 2557 2558 Release data2010a - 2010-01-18 08:30:04 -0500 2559 2560 changes to Dhaka 2561 2562 2563 Release data2009u - 2009-12-26 08:32:28 -0500 2564 2565 changes to DST in Bangladesh 2566 2567 2568 Release 2009t - 2009-12-21 13:24:27 -0500 2569 2570 [not summarized] 2571 2572 2573 Release data2009s - 2009-11-14 10:26:32 -0500 2574 2575 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 2576 2577 2578 Release 2009r - 2009-11-09 10:10:31 -0500 2579 2580 "antarctica" and "tz-link.htm" changes 2581 2582 2583 Release 2009q - 2009-11-02 09:12:40 -0500 2584 2585 with two corrections as reported by Eric Muller and Philip Newton 2586 2587 2588 Release data2009p - 2009-10-23 15:05:27 -0400 2589 2590 Argentina (including San Luis) changes (with the correction from 2591 Mariano Absatz) 2592 2593 2594 Release data2009o - 2009-10-14 16:49:38 -0400 2595 2596 Samoa (commentary only), Pakistan, and Bangladesh changes 2597 2598 2599 Release data2009n - 2009-09-22 15:13:38 -0400 2600 2601 added commentary for Argentina and a change to the end of DST in 2602 2009 in Pakistan 2603 2604 2605 Release data2009m - 2009-09-03 10:23:43 -0400 2606 2607 Samoa and Palestine changes 2608 2609 2610 Release data2009l - 2009-08-14 09:13:07 -0400 2611 2612 Samoa (comments only) and Egypt 2613 2614 2615 Release 2009k - 2009-07-20 09:46:08 -0400 2616 2617 [not summarized] 2618 2619 2620 Release data2009j - 2009-06-15 06:43:59 -0400 2621 2622 Bangladesh change (with a short turnaround since the DST change is 2623 impending) 2624 2625 2626 Release 2009i - 2009-06-08 09:21:22 -0400 2627 2628 updating for DST in Bangladesh this year 2629 2630 2631 Release 2009h - 2009-05-26 09:19:14 -0400 2632 2633 [not summarized] 2634 2635 2636 Release data2009g - 2009-04-20 16:34:07 -0400 2637 2638 Cairo 2639 2640 2641 Release data2009f - 2009-04-10 11:00:52 -0400 2642 2643 correct DST in Pakistan 2644 2645 2646 Release 2009e - 2009-04-06 09:08:11 -0400 2647 2648 [not summarized] 2649 2650 2651 Release 2009d - 2009-03-23 09:38:12 -0400 2652 2653 Morocco, Tunisia, Argentina, and American Astronomical Society changes 2654 2655 2656 Release data2009c - 2009-03-16 09:47:51 -0400 2657 2658 change to the start of Cuban DST 2659 2660 2661 Release 2009b - 2009-02-09 11:15:22 -0500 2662 2663 [not summarized] 2664 2665 2666 Release 2009a - 2009-01-21 10:09:39 -0500 2667 2668 [not summarized] 2669 2670 2671 Release data2008i - 2008-10-21 12:10:25 -0400 2672 2673 southamerica and zone.tab files, with Argentina DST rule changes and 2674 United States zone reordering and recommenting 2675 2676 2677 Release 2008h - 2008-10-13 07:33:56 -0400 2678 2679 [not summarized] 2680 2681 2682 Release 2008g - 2008-10-06 09:03:18 -0400 2683 2684 Fix a broken HTML anchor and update Brazil's DST transitions; 2685 there's also a slight reordering of information in tz-art.htm. 2686 2687 2688 Release data2008f - 2008-09-09 22:33:26 -0400 2689 2690 [not summarized] 2691 2692 2693 Release 2008e - 2008-07-28 14:11:17 -0400 2694 2695 changes by Arthur David Olson and Jesper Nrgaard Welen 2696 2697 2698 Release data2008d - 2008-07-07 09:51:38 -0400 2699 2700 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 2701 2702 2703 Release data2008c - 2008-05-19 17:48:03 -0400 2704 2705 Pakistan, Morocco, and Mongolia 2706 2707 2708 Release data2008b - 2008-03-24 08:30:59 -0400 2709 2710 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 2711 link provided 2712 2713 2714 Release 2008a - 2008-03-08 05:42:16 -0500 2715 2716 [not summarized] 2717 2718 2719 Release 2007k - 2007-12-31 10:25:22 -0500 2720 2721 most importantly, changes to the "southamerica" file based on 2722 Argentina's readoption of daylight saving time 2723 2724 2725 Release 2007j - 2007-12-03 09:51:01 -0500 2726 2727 1. eliminate the "P" (parameter) macro; 2728 2729 2. the "noncontroversial" changes circulated on the time zone 2730 mailing list (less the changes to "logwtmp.c"); 2731 2732 3. eliminate "too many transition" errors when "min" is used in time 2733 zone rules; 2734 2735 4. changes by Paul Eggert (including updated information for Venezuela). 2736 2737 2738 Release data2007i - 2007-10-30 10:28:11 -0400 2739 2740 changes for Cuba and Syria 2741 2742 2743 Release 2007h - 2007-10-01 10:05:51 -0400 2744 2745 changes by Paul Eggert, as well as an updated link to the ICU 2746 project in tz-link.htm 2747 2748 2749 Release 2007g - 2007-08-20 10:47:59 -0400 2750 2751 changes by Paul Eggert 2752 2753 The "leapseconds" file has been updated to incorporate the most 2754 recent International Earth Rotation and Reference Systems Service 2755 (IERS) bulletin. 2756 2757 There's an addition to tz-art.htm regarding the television show "Medium". 2758 2759 2760 Release 2007f - 2007-05-07 10:46:46 -0400 2761 2762 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 2763 Zealand) 2764 2765 changes to zic.c to allow hour values greater than 24 (along with 2766 Paul's improved time value overflow checking) 2767 2768 2769 Release 2007e - 2007-04-02 10:11:52 -0400 2770 2771 Syria and Honduras changes by Paul Eggert 2772 2773 zic.c variable renaming changes by Arthur David Olson 2774 2775 2776 Release 2007d - 2007-03-20 08:48:30 -0400 2777 2778 changes by Paul Eggert 2779 2780 the elimination of white space at the ends of lines 2781 2782 2783 Release 2007c - 2007-02-26 09:09:37 -0500 2784 2785 changes by Paul Eggert 2786 2787 2788 Release 2007b - 2007-02-12 09:34:20 -0500 2789 2790 Paul Eggert's proposed change to the quotation handling logic in zic.c. 2791 2792 changes to the commentary in "leapseconds" reflecting the IERS 2793 announcement that there is to be no positive leap second at the end 2794 of June 2007. 2795 2796 2797 Release 2007a - 2007-01-08 12:28:29 -0500 2798 2799 changes by Paul Eggert 2800 2801 Derick Rethan's Asmara change 2802 2803 Oscar van Vlijmen's Easter Island local mean time change 2804 2805 symbolic link changes 2806 2807 2808 Release 2006p - 2006-11-27 08:54:27 -0500 2809 2810 changes by Paul Eggert 2811 2812 2813 Release 2006o - 2006-11-06 09:18:07 -0500 2814 2815 changes by Paul Eggert 2816 2817 2818 Release 2006n - 2006-10-10 11:32:06 -0400 2819 2820 changes by Paul Eggert 2821 2822 2823 Release 2006m - 2006-10-02 15:32:35 -0400 2824 2825 changes for Uruguay, Palestine, and Egypt by Paul Eggert 2826 2827 (minimalist) changes to zic.8 to clarify "until" information 2828 2829 2830 Release data2006l - 2006-09-18 12:58:11 -0400 2831 2832 Paul's best-effort work on this coming weekend's Egypt time change 2833 2834 2835 Release 2006k - 2006-08-28 12:19:09 -0400 2836 2837 changes by Paul Eggert 2838 2839 2840 Release 2006j - 2006-08-21 09:56:32 -0400 2841 2842 changes by Paul Eggert 2843 2844 2845 Release code2006i - 2006-08-07 12:30:55 -0400 2846 2847 localtime.c fixes 2848 2849 Ken Pizzini's conversion script 2850 2851 2852 Release code2006h - 2006-07-24 09:19:37 -0400 2853 2854 adds public domain notices to four files 2855 2856 includes a fix for transition times being off by a second 2857 2858 adds a new recording to the "arts" file (information courtesy Colin Bowern) 2859 2860 2861 Release 2006g - 2006-05-08 17:18:09 -0400 2862 2863 northamerica changes by Paul Eggert 2864 2865 2866 Release 2006f - 2006-05-01 11:46:00 -0400 2867 2868 a missing version number problem is fixed (with thanks to Bradley 2869 White for catching the problem) 2870 2871 2872 Release 2006d - 2006-04-17 14:33:43 -0400 2873 2874 changes by Paul Eggert 2875 2876 added new items to tz-arts.htm that were found by Paul 2877 2878 2879 Release 2006c - 2006-04-03 10:09:32 -0400 2880 2881 two sets of data changes by Paul Eggert 2882 2883 a fencepost error fix in zic.c 2884 2885 changes to zic.c and the "europe" file to minimize differences 2886 between output produced by the old 32-bit zic and the new 64-bit 2887 version 2888 2889 2890 Release 2006b - 2006-02-20 10:08:18 -0500 2891 [tz32code2006b + tz64code2006b + tzdata2006b] 2892 2893 64-bit code 2894 2895 All SCCS IDs were bumped to "8.1" for this release. 2896 2897 2898 Release 2006a - 2006-01-30 08:59:31 -0500 2899 2900 changes by Paul Eggert (in particular, Indiana time zone moves) 2901 2902 an addition to the zic manual page to describe how special-case 2903 transitions are handled 2904 2905 2906 Release 2005r - 2005-12-27 09:27:13 -0500 2907 2908 Canadian changes by Paul Eggert 2909 2910 They also add "<pre>" directives to time zone data files and reflect 2911 changes to warning message logic in "zdump.c" (but with calls to 2912 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2913 2914 2915 Release 2005q - 2005-12-13 09:17:09 -0500 2916 2917 Nothing earth-shaking here: 2918 1. Electronic mail addresses have been removed. 2919 2. Casts of the return value of exit have been removed. 2920 3. Casts of the argument of is.* macros have been added. 2921 4. Indentation in one section of zic.c has been fixed. 2922 5. References to dead URLs in the data files have been dealt with. 2923 2924 2925 Release 2005p - 2005-12-05 10:30:53 -0500 2926 2927 "systemv", "tz-link.htm", and "zdump.c" changes 2928 (less the casts of arguments to the is* macros) 2929 2930 2931 Release 2005o - 2005-11-28 10:55:26 -0500 2932 2933 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2934 2935 zdump.c lint fixes by Arthur David Olson 2936 2937 2938 Release 2005n - 2005-10-03 09:44:09 -0400 2939 2940 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2941 et al. changes) 2942 2943 2944 Release 2005m - 2005-08-29 12:15:40 -0400 2945 2946 changes by Paul Eggert (with a small tweak to the tz-art change) 2947 2948 a declaration of an unused variable has been removed from zdump.c 2949 2950 2951 Release 2005l - 2005-08-22 12:06:39 -0400 2952 2953 changes by Paul Eggert 2954 2955 overflow/underflow checks by Arthur David Olson, minus changes to 2956 the "Theory" file about the pending addition of 64-bit data (I grow 2957 less confident of the changes being accepted with each passing day, 2958 and the changes no longer increase the data files nine-fold--there's 2959 less than a doubling in size by my local Sun's reckoning) 2960 2961 2962 Release 2005k - 2005-07-14 14:14:24 -0400 2963 2964 The "leapseconds" file has been edited to reflect the recently 2965 announced leap second at the end of 2005. 2966 2967 I've also deleted electronic mail addresses from the files as an 2968 anti-spam measure. 2969 2970 2971 Release 2005j - 2005-06-13 14:34:13 -0400 2972 2973 These reflect changes to limit the length of time zone abbreviations 2974 and the characters used in those abbreviations. 2975 2976 There are also changes to handle POSIX-style "quoted" time zone 2977 environment variables. 2978 2979 The changes were circulated on the time zone mailing list; the only 2980 change since then was the removal of a couple of minimum-length of 2981 abbreviation checks. 2982 2983 2984 Release data2005i - 2005-04-21 15:04:16 -0400 2985 2986 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2987 2988 2989 Release 2005h - 2005-04-04 11:24:47 -0400 2990 2991 changes by Paul Eggert 2992 2993 minor changes to Makefile and zdump.c to produce more useful output 2994 when doing a "make typecheck" 2995 2996 2997 Release 2005g - 2005-03-14 10:11:21 -0500 2998 2999 changes by Paul Eggert (a change to current DST rules in Uruguay and 3000 an update to a link to time zone software) 3001 3002 3003 Release 2005f - 2005-03-01 08:45:32 -0500 3004 3005 data and documentation changes by Paul Eggert 3006 3007 3008 Release 2005e - 2005-02-10 15:59:44 -0500 3009 3010 [not summarized] 3011 3012 3013 Release code2005d - 2005-01-31 09:21:47 -0500 3014 3015 make zic complain about links to links if the -v flag is used 3016 3017 have "make public" do more code checking 3018 3019 add an include to "localtime.c" for the benefit of gcc systems 3020 3021 3022 Release 2005c - 2005-01-17 18:36:29 -0500 3023 3024 get better results when mktime runs on a system where time_t is double 3025 3026 changes to the data files (most importantly to Paraguay) 3027 3028 3029 Release 2005b - 2005-01-10 09:19:54 -0500 3030 3031 Get localtime and gmtime working on systems with exotic time_t types. 3032 3033 Update the leap second commentary in the "leapseconds" file. 3034 3035 3036 Release 2005a - 2005-01-01 13:13:44 -0500 3037 3038 [not summarized] 3039 3040 3041 Release code2004i - 2004-12-14 13:42:58 -0500 3042 3043 Deal with systems where time_t is unsigned. 3044 3045 3046 Release code2004h - 2004-12-07 11:40:18 -0500 3047 3048 64-bit-time_t changes 3049 3050 3051 Release 2004g - 2004-11-02 09:06:01 -0500 3052 3053 update to Cuba (taking effect this weekend) 3054 3055 other changes by Paul Eggert 3056 3057 correction of the spelling of Oslo 3058 3059 changed versions of difftime.c and private.h 3060 3061 3062 Release code2004f - 2004-10-21 10:25:22 -0400 3063 3064 Cope with wide-ranging tm_year values. 3065 3066 3067 Release 2004e - 2004-10-11 14:47:21 -0400 3068 3069 Brazil/Argentina/Israel changes by Paul Eggert 3070 3071 changes to tz-link.htm by Paul 3072 3073 one small fix to Makefile 3074 3075 3076 Release 2004d - 2004-09-22 08:27:29 -0400 3077 3078 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 3079 3080 3081 Release 2004c - 2004-08-11 12:06:26 -0400 3082 3083 asctime-related changes 3084 3085 (variants of) some of the documentation changes suggested by Paul Eggert 3086 3087 3088 Release 2004b - 2004-07-19 14:33:35 -0400 3089 3090 data changes by Paul Eggert - most importantly, updates for Argentina 3091 3092 3093 Release 2004a - 2004-05-27 12:00:47 -0400 3094 3095 changes by Paul Eggert 3096 3097 Handle DST transitions that occur at the end of a month in some 3098 years but at the start of the following month in other years. 3099 3100 Add a copy of the correspondence that's the basis for claims about 3101 DST in the Navajo Nation. 3102 3103 3104 Release 2003e - 2003-12-15 09:36:47 -0500 3105 3106 changes by Arthur David Olson (primarily code changes) 3107 3108 changes by Paul Eggert (primarily data changes) 3109 3110 minor changes to "Makefile" and "northamerica" (in the latter case, 3111 optimization of the "Toronto" rules) 3112 3113 3114 Release 2003d - 2003-10-06 09:34:44 -0400 3115 3116 changes by Paul Eggert 3117 3118 3119 Release 2003c - 2003-09-16 10:47:05 -0400 3120 3121 Fix bad returns in zic.c's inleap function. 3122 Thanks to Bradley White for catching the problem! 3123 3124 3125 Release 2003b - 2003-09-16 07:13:44 -0400 3126 3127 Add a "--version" option (and documentation) to the zic and zdump commands. 3128 3129 changes to overflow/underflow checking in zic 3130 3131 a localtime typo fix. 3132 3133 Update the leapseconds and tz-art.htm files. 3134 3135 3136 Release 2003a - 2003-03-24 09:30:54 -0500 3137 3138 changes by Paul Eggert 3139 3140 a few additions and modifications to the tz-art.htm file 3141 3142 3143 Release 2002d - 2002-10-15 13:12:42 -0400 3144 3145 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 3146 3147 There's also a new time zone quote in "tz-art.htm". 3148 3149 3150 Release 2002c - 2002-04-04 11:55:20 -0500 3151 3152 changes by Paul Eggert 3153 3154 Change zic.c to avoid creating symlinks to files that don't exist. 3155 3156 3157 Release 2002b - 2002-01-28 12:56:03 -0500 3158 3159 [These change notes are for Release 2002a, which was corrupted. 3160 2002b was a corrected version of 2002a.] 3161 3162 changes by Paul Eggert 3163 3164 Update the "leapseconds" file to note that there'll be no leap 3165 second at the end of June, 2002. 3166 3167 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 3168 3169 Change to "difftime.c" to avoid sizeof problems. 3170 3171 3172 Release 2001d - 2001-10-09 13:31:32 -0400 3173 3174 changes by Paul Eggert 3175 3176 3177 Release 2001c - 2001-06-05 13:59:55 -0400 3178 3179 changes by Paul Eggert and Andrew Brown 3180 3181 3182 Release 2001b - 2001-04-05 16:44:38 -0400 3183 3184 changes by Paul Eggert (modulo jnorgard's typo fix) 3185 3186 tz-art.htm has been HTMLified. 3187 3188 3189 Release 2001a - 2001-03-13 12:57:44 -0500 3190 3191 changes by Paul Eggert 3192 3193 An addition to the "leapseconds" file: comments with the text of the 3194 latest IERS leap second notice. 3195 3196 Trailing white space has been removed from data file lines, and 3197 repeated spaces in "Rule Jordan" lines in the "asia" file have been 3198 converted to tabs. 3199 3200 3201 Release 2000h - 2000-12-14 15:33:38 -0500 3202 3203 changes by Paul Eggert 3204 3205 one typo fix in the "art" file 3206 3207 With providence, this is the last update of the millennium. 3208 3209 3210 Release 2000g - 2000-10-10 11:35:22 -0400 3211 3212 changes by Paul Eggert 3213 3214 correction of John Mackin's name submitted by Robert Elz 3215 3216 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 3217 Emmy Awards broadcast. 3218 3219 3220 Release 2000f - 2000-08-10 09:31:58 -0400 3221 3222 changes by Paul Eggert 3223 3224 Added information in "tz-art.htm" on a Seinfeld reference to DST. 3225 3226 Error checking and messages in the "yearistype" script have been 3227 improved. 3228 3229 3230 Release 2000e - 2000-07-31 09:27:54 -0400 3231 3232 data changes by Paul Eggert 3233 3234 a change to the default value of the defined constant HAVE_STRERROR 3235 3236 the addition of a Dave Barry quote on DST to the tz-arts file 3237 3238 3239 Release 2000d - 2000-04-20 15:43:04 -0400 3240 3241 changes to the documentation and code of strftime for C99 conformance 3242 3243 a bug fix for date.c 3244 3245 These are based on (though modified from) changes by Paul Eggert. 3246 3247 3248 Release 2000c - 2000-03-04 10:31:43 -0500 3249 3250 changes by Paul Eggert 3251 3252 3253 Release 2000b - 2000-02-21 12:16:29 -0500 3254 3255 changes by Paul Eggert and Joseph Myers 3256 3257 modest tweaks to the tz-art.htm and tz-link.htm files 3258 3259 3260 Release 2000a - 2000-01-18 09:21:26 -0500 3261 3262 changes by Paul Eggert 3263 3264 The two hypertext documents have also been renamed. 3265 3266 3267 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 3268 3269 Paul Eggert's changes 3270 3271 additions to the "zic" manual page and the "Arts.htm" file 3272 3273 3274 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 3275 3276 [not summarized] 3277 3278 3279 Release data1999h - 1999-10-07 03:50:29 -0400 3280 3281 changes by Paul Eggert to "europe" (most importantly, fixing 3282 Lithuania and Estonia) 3283 3284 3285 Release 1999g - 1999-09-28 11:06:18 -0400 3286 3287 data changes by Paul Eggert (most importantly, the change for 3288 Lebanon that buys correctness for this coming Sunday) 3289 3290 The "code" file contains changes to "Makefile" and "checktab.awk" to 3291 allow better checking of time zone files before they are published. 3292 3293 3294 Release 1999f - 1999-09-23 09:48:14 -0400 3295 3296 changes by Arthur David Olson and Paul Eggert 3297 3298 3299 Release 1999e - 1999-08-17 15:20:54 -0400 3300 3301 changes circulated by Paul Eggert, although the change to handling 3302 of DST-specifying time zone names has been commented out for now 3303 (search for "XXX" in "localtime.c" for details). These files also 3304 do not make any changes to the start of DST in Brazil. 3305 3306 In addition to Paul's changes, there are updates to "Arts.htm" and 3307 cleanups of URLs. 3308 3309 3310 Release 1999d - 1999-03-30 11:31:07 -0500 3311 3312 changes by Paul Eggert 3313 3314 The Makefile's "make public" rule has also been changed to do a test 3315 compile of each individual time zone data file (which should help 3316 avoid problems such as the one we had with Nicosia). 3317 3318 3319 Release 1999c - 1999-03-25 09:47:47 -0500 3320 3321 changes by Paul Eggert, most importantly the change for Chile. 3322 3323 3324 Release 1999b - 1999-02-01 17:51:44 -0500 3325 3326 changes by Paul Eggert 3327 3328 code changes (suggested by Mani Varadarajan, mani at be.com) for 3329 correct handling of symbolic links when building using a relative directory 3330 3331 code changes to generate correct messages for failed links 3332 3333 updates to the URLs in Arts.htm 3334 3335 3336 Release 1999a - 1999-01-19 16:20:29 -0500 3337 3338 error message internationalizations and corrections in zic.c and 3339 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 3340 to whom thanks!) 3341 3342 3343 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 3344 3345 changes for Brazil, Chile, and Germany 3346 3347 support for use of "24:00" in the input files for the time zone compiler 3348 3349 3350 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 3351 3352 changes by Paul Eggert 3353 3354 correction to a define in the "private.h" file 3355 3356 3357 Release data1998g - 1998-08-11 03:28:35 -0000 3358 [tzdata1998g.tar.gz is missing!] 3359 3360 Lithuanian change provided by mgedmin at pub.osf.it 3361 3362 Move creation of the GMT link with Etc/GMT to "etcetera" (from 3363 "backward") to ensure that the GMT file is created even where folks 3364 don't want the "backward" links (as suggested by Paul Eggert). 3365 3366 3367 Release data1998f - 1998-07-20 13:50:00 -0000 3368 [tzdata1998f.tar.gz is missing!] 3369 3370 Update the "leapseconds" file to include the newly-announced 3371 insertion at the end of 1998. 3372 3373 3374 Release code1998f - 1998-06-01 10:18:31 -0400 3375 3376 addition to localtime.c by Guy Harris 3377 3378 3379 Release 1998e - 1998-05-28 09:56:26 -0400 3380 3381 The Makefile is changed to produce zoneinfo-posix rather than 3382 zoneinfo/posix, and to produce zoneinfo-leaps rather than 3383 zoneinfo/right. 3384 3385 data changes by Paul Eggert 3386 3387 changes from Guy Harris to provide asctime_r and ctime_r 3388 3389 A usno1998 file (substantially identical to usno1997) has been added. 3390 3391 3392 Release 1998d - 1998-05-14 11:58:34 -0400 3393 3394 changes to comments (in particular, elimination of references to CIA maps). 3395 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 3396 where changes occur. 3397 3398 3399 Release 1998c - 1998-02-28 12:32:26 -0500 3400 3401 changes by Paul Eggert (save the "French correction," on which I'll 3402 wait for the dust to settle) 3403 3404 symlink changes 3405 3406 changes and additions to Arts.htm 3407 3408 3409 Release 1998b - 1998-01-17 14:31:51 -0500 3410 3411 URL cleanups and additions 3412 3413 3414 Release 1998a - 1998-01-13 12:37:35 -0500 3415 3416 changes by Paul Eggert 3417 3418 3419 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 3420 3421 changes by Paul Eggert, with minor modifications from Arthur David 3422 Olson to make the files more browser friendly 3423 3424 3425 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 3426 3427 minor changes to put "TZif" at the start of each time zone information file 3428 3429 a rule has also been added to the Makefile so you can 3430 make zones 3431 to just recompile the zone information files (rather than doing a 3432 full "make install" with its other effects). 3433 3434 3435 Release data1997i - 1997-10-07 08:45:38 -0400 3436 3437 changes to Africa by Paul Eggert 3438 3439 3440 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 3441 3442 corrections for Uruguay (and other locations) 3443 3444 Arthur David Olson's simple-minded fix allowing mktime to both 3445 correctly handle leap seconds and correctly handle tm_sec values 3446 upon which arithmetic has been performed. 3447 3448 3449 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 3450 3451 Paul Eggert's updates 3452 3453 a small change to a function prototype; 3454 3455 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 3456 include information on Around the World in Eighty Days. 3457 3458 3459 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 3460 3461 fixes to zic's error handling 3462 3463 changes inspired by the item circulated on Slovenia 3464 3465 The description of Web resources has been HTMLified for browsing 3466 convenience. 3467 3468 A new piece of tz-related music has been added to the "Music" file. 3469 3470 3471 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 3472 3473 Paul Eggert's latest suggestions 3474 3475 3476 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 3477 3478 changes to "zic.c" to correct performance of the "-s" option 3479 3480 a new file "usno1997" 3481 3482 3483 Release data1997c - 1997-03-04 09:58:18 -0500 3484 3485 changes in Israel 3486 3487 3488 Release 1997b - 1997-02-27 18:34:19 -0500 3489 3490 The data file incorporates the 1997 leap second. 3491 3492 The code file incorporates Arthur David Olson's take on the 3493 zic/multiprocessor/directory-creation situation. 3494 3495 3496 Release 1997a - 1997-01-21 09:11:10 -0500 3497 3498 Paul Eggert's Antarctica (and other changes) 3499 3500 Arthur David Olson finessed the "getopt" issue by checking against 3501 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 3502 is returned while SunOS 5.5's manual says EOF is returned). 3503 3504 3505 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 3506 3507 Paul Eggert's latest changes 3508 3509 3510 Release code1996n - 1996-12-16 09:42:02 -0500 3511 3512 link snapping fix from Bruce Evans (via Garrett Wollman) 3513 3514 3515 Release data1996m - 1996-11-24 02:37:34 -0000 3516 [tzdata1996m.tar.gz is missing!] 3517 3518 Paul Eggert's batch of changes 3519 3520 3521 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 3522 3523 No functional changes here; the files have simply been changed to 3524 make more use of ISO style dates in comments. The names of the above 3525 files now include the year in full. 3526 3527 3528 Release code96l - 1996-09-08 17:12:20 -0400 3529 3530 tzcode96k was missing a couple of pieces. 3531 3532 3533 Release 96k - 1996-09-08 16:06:22 -0400 3534 3535 the latest round of changes from Paul Eggert 3536 3537 the recent Year 2000 material 3538 3539 3540 Release code96j - 1996-07-30 13:18:53 -0400 3541 3542 Set sp->typecnt as suggested by Timothy Patrick Murphy. 3543 3544 3545 Release code96i - 1996-07-27 20:11:35 -0400 3546 3547 Paul's suggested patch for strftime %V week numbers 3548 3549 3550 Release data96i - 1996-07-01 18:13:04 -0400 3551 3552 "northamerica" and "europe" changes by Paul Eggert 3553 3554 3555 Release code96h - 1996-06-05 08:02:21 -0400 3556 3557 fix for handling transitions specified in Universal Time 3558 3559 Some "public domain" notices have also been added. 3560 3561 3562 Release code96g - 1996-05-16 14:00:26 -0400 3563 3564 fix for the simultaneous-DST-and-zone-change challenge 3565 3566 3567 Release data96h - 1996-05-09 17:40:51 -0400 3568 3569 changes by Paul Eggert 3570 3571 3572 Release code96f-data96g - 1996-05-03 03:09:59 -0000 3573 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 3574 3575 The changes get us some of the way to fixing the problems noted in Paul 3576 Eggert's letter yesterday (in addition to a few others). The approach 3577 has been to make zic a bit smarter about figuring out what time zone 3578 abbreviations apply just after the time specified in the "UNTIL" part 3579 of a zone line. Putting the smarts in zic means avoiding having 3580 transition times show up in both "Zone" lines and "Rule" lines, which 3581 in turn avoids multiple transition time entries in time zone files. 3582 (This also makes the zic input files such as "europe" a bit shorter and 3583 should ease maintenance.) 3584 3585 3586 Release data96f - 1996-04-19 19:20:03 -0000 3587 [tzdata96f.tar.gz is missing!] 3588 3589 The only changes are to the "northamerica" file; the time zone 3590 abbreviation for Denver is corrected to MST (and MDT), and the 3591 comments for Mexico have been updated. 3592 3593 3594 Release data96e - 1996-03-19 17:37:26 -0500 3595 3596 Proposals by Paul Eggert, in particular the Portugal change that 3597 comes into play at the end of this month. 3598 3599 3600 Release data96d - 1996-03-18 20:49:39 -0500 3601 3602 [not summarized] 3603 3604 3605 Release code96e - 1996-02-29 15:43:27 -0000 3606 [tzcode96e.tar.gz is missing!] 3607 3608 internationalization changes and the fix to the documentation for strftime 3609 3610 3611 Release code96d-data96c - 1996-02-12 11:05:27 -0500 3612 3613 The "code" file simply updates Bob Kridle's electronic address. 3614 3615 The "data" file updates rules for Mexico. 3616 3617 3618 Release data96b - 1996-01-27 15:44:42 -0500 3619 3620 Kiribati change 3621 3622 3623 Release code96c - 1996-01-16 16:58:15 -0500 3624 3625 leap-year streamlining and binary-search changes 3626 3627 fix to newctime.3 3628 3629 3630 Release code96b - 1996-01-10 20:42:39 -0500 3631 3632 fixes and enhancements from Paul Eggert, including code that 3633 emulates the behavior of recent versions of the SunOS "date" 3634 command. 3635 3636 3637 Release 96a - 1996-01-06 09:08:24 -0500 3638 3639 Israel updates 3640 3641 fixes to strftime.c for correct ISO 8601 week number generation, 3642 plus support for two new formats ('G' and 'g') to give ISO 8601 year 3643 numbers (which are not necessarily the same as calendar year numbers) 3644 3645 3646 Release code95i-data95m - 1995-12-21 12:46:47 -0500 3647 3648 The latest revisions from Paul Eggert are included, the usno1995 3649 file has been updated, and a new file ("WWW") covering useful URLs 3650 has been added. 3651 3652 3653 Release code95h-data95l - 1995-12-19 18:10:12 -0500 3654 3655 A simplification of a macro definition, a change to data for Sudan, 3656 and (for last minute shoppers) notes in the "Music" file on the CD 3657 "Old Man Time". 3658 3659 3660 Release code95g-data95k - 1995-10-30 10:32:47 -0500 3661 3662 (slightly reformatted) 8-bit-clean proposed patch 3663 3664 minor patch: US/Eastern -> America/New_York 3665 3666 snapshot of the USNO's latest data ("usno1995") 3667 3668 some other minor cleanups 3669 3670 3671 Release code95f-data95j - 1995-10-28 21:01:34 -0000 3672 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 3673 3674 European cleanups 3675 3676 support for 64-bit time_t's 3677 3678 optimization in localtime.c 3679 3680 3681 Release code95e - 1995-10-13 13:23:57 -0400 3682 3683 the mktime change to scan from future to past when trying to find time zone 3684 offsets 3685 3686 3687 Release data95i - 1995-09-26 10:43:26 -0400 3688 3689 For Canada/Central, guess that the Sun customer's "one week too 3690 early" was just a approximation, and the true error is one month 3691 too early. This is consistent with the rest of Canada. 3692 3693 3694 Release data95h - 1995-09-21 11:26:48 -0400 3695 3696 latest changes from Paul Eggert 3697 3698 3699 Release code95d - 1995-09-14 11:14:45 -0400 3700 3701 the addition of a "Music" file, which documents four recorded 3702 versions of the tune "Save That Time". 3703 3704 3705 Release data95g - 1995-09-01 17:21:36 -0400 3706 3707 "yearistype" correction 3708 3709 3710 Release data95f - 1995-08-28 20:46:56 -0400 3711 3712 Paul Eggert's change to the australasia file 3713 3714 3715 Release data95e - 1995-07-08 18:02:34 -0400 3716 3717 The only change is a leap second at the end of this year. 3718 Thanks to Bradley White for forwarding news on the leap second. 3719 3720 3721 Release data95d - 1995-07-03 13:26:22 -0400 3722 3723 Paul Eggert's changes 3724 3725 3726 Release data95c - 1995-07-02 19:19:28 -0400 3727 3728 changes to "asia", "backward", "europe", and "southamerica" 3729 (read: northamericacentrics need not apply) 3730 3731 3732 Release code95c - 1995-03-13 14:00:46 -0500 3733 3734 one-line fix for sign extension problems in detzcode 3735 3736 3737 Release 95b - 1995-03-04 11:22:38 -0500 3738 3739 Minor changes in both: 3740 3741 The "code" file contains a workaround for the lack of "unistd.h" in 3742 Microsoft C++ version 7. 3743 3744 The "data" file contains a fixed "Link" for America/Shiprock. 3745 3746 3747 Release 94h - 1994-12-10 12:51:14 -0500 3748 3749 The files: 3750 3751 * incorporate the changes to "zdump" and "date" to make changes to 3752 the "TZ" environment variable permanent; 3753 3754 * incorporate the table changes by Paul Eggert; 3755 3756 * include (and document) support for universal time specifications in 3757 data files - but do not (yet) include use of this feature in the 3758 data files. 3759 3760 Think of this as "TZ Classic" - the software has been set up not to break if 3761 universal time shows up in its input, and data entries have been 3762 left as is so as not to break existing implementations. 3763 3764 3765 Release data94f - 1994-08-20 12:56:09 -0400 3766 3767 (with thanks!) the latest data updates from Paul Eggert 3768 3769 3770 Release data94e - 1994-06-04 13:13:53 -0400 3771 3772 [not summarized] 3773 3774 3775 Release code94g - 1994-05-05 12:14:07 -0400 3776 3777 fix missing "optind.c" and a reference to it in the Makefile 3778 3779 3780 Release code94f - 1994-05-05 13:00:33 -0000 3781 [tzcode94f.tar.gz is missing!] 3782 3783 changes to avoid overflow in difftime, as well as changes to cope 3784 with the 52/53 challenge in strftime 3785 3786 3787 Release code94e - 1994-03-30 23:32:59 -0500 3788 3789 change for the benefit of PCTS 3790 3791 3792 Release 94d - 1994-02-24 15:42:25 -0500 3793 3794 Avoid clashes with POSIX semantics for zones such as GMT+4. 3795 3796 Some other very minor housekeeping is also present. 3797 3798 3799 Release code94c - 1994-02-10 08:52:40 -0500 3800 3801 Fix bug where mkdirs was broken unless you compile with 3802 -fwritable-strings (which is generally losing to do). 3803 3804 3805 Release 94b - 1994-02-07 10:04:33 -0500 3806 3807 work by Paul Eggert who notes: 3808 3809 I found another book of time zone histories by E W Whitman; it's not 3810 as extensive as Shanks but has a few goodies of its own. I used it 3811 to update the tables. I also fixed some more as a result of 3812 correspondence with Adam David and Peter Ilieve, and move some stray 3813 links from 'europe' to 'backward'. I corrected some scanning errors 3814 in usno1989. 3815 3816 As far as the code goes, I fixed zic to allow years in the range 3817 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 3818 And I cleaned up the zic documentation a little bit. 3819 3820 3821 Release data94a - 1994-02-03 08:58:54 -0500 3822 3823 It simply incorporates the recently announced leap second into the 3824 "leapseconds" file. 3825 3826 3827 Release 93g - 1993-11-22 17:28:27 -0500 3828 3829 Paul Eggert has provided a good deal of historic information (based 3830 on Shanks), and there are some code changes to deal with the buglets 3831 that crawled out in dealing with the new information. 3832 3833 3834 Release 93f - 1993-10-15 12:27:46 -0400 3835 3836 Paul Eggert's changes 3837 3838 3839 Release 93e - 1993-09-05 21:21:44 -0400 3840 3841 This has updated data for Israel, England, and Kwajalein. There's 3842 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 3843 Thanks to Paul Eggert and Peter Ilieve for the changes. 3844 3845 3846 Release 93d - 1993-06-17 23:34:17 -0400 3847 3848 new fix and new data on Israel 3849 3850 3851 Release 93c - 1993-06-06 19:31:55 -0400 3852 3853 [not summarized] 3854 3855 3856 Release 93b - 1993-02-02 14:53:58 -0500 3857 3858 updated "leapseconds" file 3859 3860 3861 Release 93 - 1993-01-08 07:01:06 -0500 3862 3863 At kre's suggestion, the package has been split in two - a code piece 3864 (which also includes documentation) that's only of use to folks who 3865 want to recompile things and a data piece useful to anyone who can 3866 run "zic". 3867 3868 The new version has a few changes to the data files, a few 3869 portability changes, and an off-by-one fix (with thanks to 3870 Tom Karzes at deshaw.com for providing a description and a 3871 solution). 3872 3873 3874 Release 92c - 1992-11-21 17:35:36 -0000 3875 [tz92c.tar.Z is missing!] 3876 3877 The fallout from the latest round of DST transitions. 3878 3879 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3880 there's also a change to "zic.c" that makes it portable to more systems. 3881 3882 3883 Release 92 - 1992-04-25 18:17:03 -0000 3884 [tz92.tar.Z is missing!] 3885 3886 By popular demand (well, at any rate, following a request by kre at munnari) 3887 3888 3889 The 1989 update of the time zone package featured: 3890 3891 * POSIXization (including interpretation of POSIX-style TZ environment 3892 variables, provided by Guy Harris), 3893 * ANSIfication (including versions of "mktime" and "difftime"), 3894 * SVIDulation (an "altzone" variable) 3895 * MACHination (the "gtime" function) 3896 * corrections to some time zone data (including corrections to the rules 3897 for Great Britain and New Zealand) 3898 * reference data from the United States Naval Observatory for folks who 3899 want to do additional time zones 3900 * and the 1989 data for Saudi Arabia. 3901 3902 (Since this code will be treated as "part of the implementation" in some 3903 places and as "part of the application" in others, there's no good way to 3904 name functions, such as timegm, that are not part of the proposed ANSI C 3905 standard; such functions have kept their old, underscore-free names in this 3906 update.) 3907 3908 And the "dysize" function has disappeared; it was present to allow 3909 compilation of the "date" command on old BSD systems, and a version of "date" 3910 is now provided in the package. The "date" command is not created when you 3911 "make all" since it may lack options provided by the version distributed with 3912 your operating system, or may not interact with the system in the same way 3913 the native version does. 3914 3915 Since POSIX frowns on correct leap second handling, the default behavior of 3916 the "zic" command (in the absence of a "-L" option) has been changed to omit 3917 leap second information from its output files. 3918 3919 3920 ----- 3921 Notes 3922 3923 This file contains copies of the part of each release announcement 3924 that talks about the changes in that release. The text has been 3925 adapted and reformatted for the purposes of this file. 3926 3927 Traditionally a release R consists of a pair of tarball files, 3928 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3929 code2010a, data2012c) consist of just one or the other tarball, and a 3930 few (e.g., code2012c-data2012d) have tarballs with mixed version 3931 numbers. Recent releases also come in an experimental format 3932 consisting of a single tarball tzdb-R.tar.lz with extra data. 3933 3934 Release timestamps are taken from the release's commit (for newer, 3935 Git-based releases), from the newest file in the tarball (for older 3936 releases, where this info is available) or from the email announcing 3937 the release (if all else fails; these are marked with a time zone of 3938 -0000 and an "is missing!" comment). 3939 3940 Earlier versions of the code and data were not announced on the tz 3941 list and are not summarized here. 3942 3943 This file is in the public domain. 3944 3945 Local Variables: 3946 coding: utf-8 3947 End: 3948
Indexes created Mon Sep 29 21:09:56 GMT 2025