NEWS revision 1.20
1 News for the tz database 2 3 Release 2017a - 2017-02-28 00:05:36 -0800 4 5 Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia 6 discontinues DST. 7 8 Changes to future time stamps 9 10 Mongolia no longer observes DST. (Thanks to Ganbold Tsagaankhuu.) 11 12 Chile's Region of Magallanes moves from -04/-03 to -03 year-round. 13 Its clocks diverge from America/Santiago starting 2017-05-13 at 14 23:00, hiving off a new zone America/Punta_Arenas. Although the 15 Chilean government says this change expires in May 2019, for now 16 assume it's permanent. (Thanks to Juan Correa and Deborah 17 Goldsmith.) This also affects Antarctica/Palmer. 18 19 Changes to past time stamps 20 21 Fix many entries for historical time stamps for Europe/Madrid 22 before 1979, to agree with tables compiled by Pere Planesas of the 23 National Astronomical Observatory of Spain. As a side effect, 24 this changes some time stamps for Africa/Ceuta before 1929, which 25 are probably guesswork anyway. (Thanks to Steve Allen and 26 Pierpaolo Bernardi for the heads-ups, and to Michael Deckers for 27 correcting the 1901 transition.) 28 29 Ecuador observed DST from 1992-11-28 to 1993-02-05. 30 (Thanks to Alois Treindl.) 31 32 Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21. 33 (Thanks to Stepan Golosunov.) 34 35 Changes to past and future time zone abbreviations 36 37 Switch to numeric time zone abbreviations for South America, as 38 part of the ongoing project of removing invented abbreviations. 39 This avoids the need to invent an abbreviation for the new Chilean 40 new zone. Similarly, switch from invented to numeric time zone 41 abbreviations for Afghanistan, American Samoa, the Azores, 42 Bangladesh, Bhutan, the British Indian Ocean Territory, Brunei, 43 Cape Verde, Chatham Is, Christmas I, Cocos (Keeling) Is, Cook Is, 44 Dubai, East Timor, Eucla, Fiji, French Polynesia, Greenland, 45 Indochina, Iran, Iraq, Kiribati, Lord Howe, Macquarie, Malaysia, 46 the Maldives, Marshall Is, Mauritius, Micronesia, Mongolia, 47 Myanmar, Nauru, Nepal, New Caledonia, Niue, Norfolk I, Palau, 48 Papua New Guinea, the Philippines, Pitcairn, Qatar, Runion, St 49 Pierre & Miquelon, Samoa, Saudi Arabia, Seychelles, Singapore, 50 Solomon Is, Tokelau, Tuvalu, Wake, Vanuatu, Wallis & Futuna, and 51 Xinjiang; for 20-minute daylight saving time in Ghana before 1943; 52 for half-hour daylight saving time in Belize before 1944 and in 53 the Dominican Republic before 1975; and for Canary Islands before 54 1946, for Guinea-Bissau before 1975, for Iceland before 1969, for 55 Indian Summer Time before 1942, for Indonesia before around 1964, 56 for Kenya before 1960, for Liberia before 1973, for Madeira before 57 1967, for Namibia before 1943, for the Netherlands in 1937-9, for 58 Pakistan before 1971, for Western Sahara before 1977, and for 59 Zaporozhye in 1880-1924. 60 61 For Alaska time from 1900 through 1967, instead of "CAT" use the 62 abbreviation "AST", the abbreviation commonly used at the time 63 (Atlantic Standard Time had not been standardized yet). Use "AWT" 64 and "APT" instead of the invented abbreviations "CAWT" and "CAPT". 65 66 Use "CST" and "CDT" instead of invented abbreviations for Macau 67 before 1999 and Taiwan before 1938, and use "JST" instead of the 68 invented abbreviation "JCST" for Japan and Korea before 1938. 69 70 Change to database entry category 71 72 Move the Pacific/Johnston link from 'australasia' to 'backward', 73 since Johnston is now uninhabited. 74 75 Changes to code 76 77 zic no longer mishandles some transitions in January 2038 when it 78 attempts to work around Qt bug 53071. This fixes a bug affecting 79 Pacific/Tongatapu that was introduced in zic 2016e. localtime.c 80 now contains a workaround, useful when loading a file generated by 81 a buggy zic. (Problem and localtime.c fix reported by Bradley 82 White.) 83 84 zdump -i now outputs non-hour numeric time zone abbreviations 85 without a colon, e.g., "+0530" rather than "+05:30". This agrees 86 with zic %z and with common practice, and simplifies auditing of 87 zdump output. 88 89 zdump is now buildable again with -DUSE_LTZ=0. 90 (Problem reported by Joseph Myers.) 91 92 zdump.c now always includes private.h, to avoid code duplication 93 with private.h. (Problem reported by Kees Dekker.) 94 95 localtime.c no longer mishandles early or late timestamps 96 when TZ is set to a POSIX-style string that specifies DST. 97 (Problem reported by Kees Dekker.) 98 99 date and strftime now cause %z to generate "-0000" instead of 100 "+0000" when the UT offset is zero and the time zone abbreviation 101 begins with "-". 102 103 Changes to documentation and commentary 104 105 The 'Theory' file now better documents choice of historical time 106 zone abbreviations. (Problems reported by Michael Deckers.) 107 108 tz-link.htm now covers leap smearing, which is popular in clouds. 109 110 111 Release 2016j - 2016-11-22 23:17:13 -0800 112 113 Briefly: Saratov, Russia moves from +03 to +04 on 2016-12-04. 114 115 Changes to future time stamps 116 117 Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00. 118 This hives off a new zone Europe/Saratov from Europe/Volgograd. 119 (Thanks to Yuri Konotopov and Stepan Golosunov.) 120 121 Changes to past time stamps 122 123 The new zone Asia/Atyrau for Atyra Region, Kazakhstan, is like 124 Asia/Aqtau except it switched from +05/+06 to +04/+05 in spring 125 1999, not fall 1994. (Thanks to Stepan Golosunov.) 126 127 Changes to past time zone abbreviations 128 129 Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote 130 summer time before 1948. The old use of "EET" was a typo. 131 132 Changes to code 133 134 zic no longer mishandles file systems that lack hard links, fixing 135 bugs introduced in 2016g. (Problems reported by Tom Lane.) 136 Also, when the destination already contains symbolic links, zic 137 should now work better on systems where the 'link' system call 138 does not follow symbolic links. 139 140 Changes to documentation and commentary 141 142 tz-link.htm now documents the relationship between release version 143 numbers and development-repository commit tags. (Suggested by 144 Paul Koning.) 145 146 The 'Theory' file now documents UT. 147 148 iso3166.tab now accents "Curaao", and commentary now mentions 149 the names "Cabo Verde" and "Czechia". (Thanks to Ji Boh.) 150 151 152 Release 2016i - 2016-11-01 23:19:52 -0700 153 154 Briefly: Cyprus split into two time zones on 2016-10-30, and Tonga 155 reintroduces DST on 2016-11-06. 156 157 Changes to future time stamps 158 159 Pacific/Tongatapu begins DST on 2016-11-06 at 02:00, ending on 160 2017-01-15 at 03:00. Assume future observances in Tonga will be 161 from the first Sunday in November through the third Sunday in 162 January, like Fiji. (Thanks to Pulu Anau.) Switch to numeric 163 time zone abbreviations for this zone. 164 165 Changes to past and future time stamps 166 167 Northern Cyprus is now +03 year round, causing a split in Cyprus 168 time zones starting 2016-10-30 at 04:00. This creates a zone 169 Asia/Famagusta. (Thanks to Even Scharning and Matt Johnson.) 170 171 Antarctica/Casey switched from +08 to +11 on 2016-10-22. 172 (Thanks to Steffen Thorsen.) 173 174 Changes to past time stamps 175 176 Several corrections were made for pre-1975 time stamps in Italy. 177 These affect Europe/Malta, Europe/Rome, Europe/San_Marino, and 178 Europe/Vatican. 179 180 First, the 1893-11-01 00:00 transition in Italy used the new UT 181 offset (+01), not the old (+00:49:56). (Thanks to Michael 182 Deckers.) 183 184 Second, rules for daylight saving in Italy were changed to agree 185 with Italy's National Institute of Metrological Research (INRiM) 186 except for 1944, as follows (thanks to Pierpaolo Bernardi, Brian 187 Inglis, and Michael Deckers): 188 189 The 1916-06-03 transition was at 24:00, not 00:00. 190 191 The 1916-10-01, 1919-10-05, and 1920-09-19 transitions were at 192 00:00, not 01:00. 193 194 The 1917-09-30 and 1918-10-06 transitions were at 24:00, not 195 01:00. 196 197 The 1944-09-17 transition was at 03:00, not 01:00. This 198 particular change is taken from Italian law as INRiM's table, 199 (which says 02:00) appears to have a typo here. Also, keep the 200 1944-04-03 transition for Europe/Rome, as Rome was controlled by 201 Germany then. 202 203 The 1967-1970 and 1972-1974 fallback transitions were at 01:00, 204 not 00:00. 205 206 Changes to code 207 208 The code should now be buildable on AmigaOS merely by setting the 209 appropriate Makefile variables. (From a patch by Carsten Larsen.) 210 211 212 Release 2016h - 2016-10-19 23:17:57 -0700 213 214 Changes to future time stamps 215 216 Asia/Gaza and Asia/Hebron end DST on 2016-10-29 at 01:00, not 217 2016-10-21 at 00:00. (Thanks to Sharef Mustafa.) Predict that 218 future fall transitions will be on the last Saturday of October 219 at 01:00, which is consistent with predicted spring transitions 220 on the last Saturday of March. (Thanks to Tim Parenti.) 221 222 Changes to past time stamps 223 224 In Turkey, transitions in 1986-1990 were at 01:00 standard time 225 not at 02:00, and the spring 1994 transition was on March 20, not 226 March 27. (Thanks to Kvan Yazan.) 227 228 Changes to past and future time zone abbreviations 229 230 Asia/Colombo now uses numeric time zone abbreviations like "+0530" 231 instead of alphabetic ones like "IST" and "LKT". Various 232 English-language sources use "IST", "LKT" and "SLST", with no 233 working consensus. (Usage of "SLST" mentioned by Sadika 234 Sumanapala.) 235 236 Changes to code 237 238 zic no longer mishandles relativizing file names when creating 239 symbolic links like /etc/localtime, when these symbolic links 240 are outside the usual directory hierarchy. This fixes a bug 241 introduced in 2016g. (Problem reported by Andreas Stieger.) 242 243 Changes to build procedure 244 245 New rules 'traditional_tarballs' and 'traditional_signatures' for 246 building just the traditional-format distribution. (Requested by 247 Deborah Goldsmith.) 248 249 The file 'version' is now put into the tzdata tarball too. 250 (Requested by Howard Hinnant.) 251 252 Changes to documentation and commentary 253 254 The 'Theory' file now has a section on interface stability. 255 (Requested by Paul Koning.) It also mentions features like 256 tm_zone and localtime_rz that have long been supported by the 257 reference code. 258 259 tz-link.htm has improved coverage of time zone boundaries suitable 260 for geolocation. (Thanks to heads-ups from Evan Siroky and Matt 261 Johnson.) 262 263 The US commentary now mentions Allen and the "day of two noons". 264 265 The Fiji commentary mentions the government's 2016-10-03 press 266 release. (Thanks to Raymond Kumar.) 267 268 269 Release 2016g - 2016-09-13 08:56:38 -0700 270 271 Changes to future time stamps 272 273 Turkey switched from EET/EEST (+02/+03) to permanent +03, 274 effective 2016-09-07. (Thanks to Burak AYDIN.) Use "+03" rather 275 than an invented abbreviation for the new time. 276 277 New leap second 2016-12-31 23:59:60 UTC as per IERS Bulletin C 52. 278 (Thanks to Tim Parenti.) 279 280 Changes to past time stamps 281 282 For America/Los_Angeles, spring-forward transition times have been 283 corrected from 02:00 to 02:01 in 1948, and from 02:00 to 01:00 in 284 1950-1966. 285 286 For zones using Soviet time on 1919-07-01, transitions to UT-based 287 time were at 00:00 UT, not at 02:00 local time. The affected 288 zones are Europe/Kirov, Europe/Moscow, Europe/Samara, and 289 Europe/Ulyanovsk. (Thanks to Alexander Belopolsky.) 290 291 Changes to past and future time zone abbreviations 292 293 The Factory zone now uses the time zone abbreviation -00 instead 294 of a long English-language string, as -00 is now the normal way to 295 represent an undefined time zone. 296 297 Several zones in Antarctica and the former Soviet Union, along 298 with zones intended for ships at sea that cannot use POSIX TZ 299 strings, now use numeric time zone abbreviations instead of 300 invented or obsolete alphanumeric abbreviations. The affected 301 zones are Antarctica/Casey, Antarctica/Davis, 302 Antarctica/DumontDUrville, Antarctica/Mawson, Antarctica/Rothera, 303 Antarctica/Syowa, Antarctica/Troll, Antarctica/Vostok, 304 Asia/Anadyr, Asia/Ashgabat, Asia/Baku, Asia/Bishkek, Asia/Chita, 305 Asia/Dushanbe, Asia/Irkutsk, Asia/Kamchatka, Asia/Khandyga, 306 Asia/Krasnoyarsk, Asia/Magadan, Asia/Omsk, Asia/Sakhalin, 307 Asia/Samarkand, Asia/Srednekolymsk, Asia/Tashkent, Asia/Tbilisi, 308 Asia/Ust-Nera, Asia/Vladivostok, Asia/Yakutsk, Asia/Yekaterinburg, 309 Asia/Yerevan, Etc/GMT-14, Etc/GMT-13, Etc/GMT-12, Etc/GMT-11, 310 Etc/GMT-10, Etc/GMT-9, Etc/GMT-8, Etc/GMT-7, Etc/GMT-6, Etc/GMT-5, 311 Etc/GMT-4, Etc/GMT-3, Etc/GMT-2, Etc/GMT-1, Etc/GMT+1, Etc/GMT+2, 312 Etc/GMT+3, Etc/GMT+4, Etc/GMT+5, Etc/GMT+6, Etc/GMT+7, Etc/GMT+8, 313 Etc/GMT+9, Etc/GMT+10, Etc/GMT+11, Etc/GMT+12, Europe/Kaliningrad, 314 Europe/Minsk, Europe/Samara, Europe/Volgograd, and 315 Indian/Kerguelen. For Europe/Moscow the invented abbreviation MSM 316 was replaced by +05, whereas MSK and MSD were kept as they are not 317 our invention and are widely used. 318 319 Changes to zone names 320 321 Rename Asia/Rangoon to Asia/Yangon, with a backward compatibility link. 322 (Thanks to David Massoud.) 323 324 Changes to code 325 326 zic no longer generates binary files containing POSIX TZ-like 327 strings that disagree with the local time type after the last 328 explicit transition in the data. This fixes a bug with 329 Africa/Casablanca and Africa/El_Aaiun in some year-2037 time 330 stamps on the reference platform. (Thanks to Alexander Belopolsky 331 for reporting the bug and suggesting a way forward.) 332 333 If the installed localtime and/or posixrules files are symbolic 334 links, zic now keeps them symbolic links when updating them, for 335 compatibility with platforms like OpenSUSE where other programs 336 configure these files as symlinks. 337 338 zic now avoids hard linking to symbolic links, avoids some 339 unnecessary mkdir and stat system calls, and uses shorter file 340 names internally. 341 342 zdump has a new -i option to generate transitions in a 343 more-compact but still human-readable format. This option is 344 experimental, and the output format may change in future versions. 345 (Thanks to Jon Skeet for suggesting that an option was needed, 346 and thanks to Tim Parenti and Chris Rovick for further comments.) 347 348 Changes to build procedure 349 350 An experimental distribution format is available, in addition 351 to the traditional format which will continue to be distributed. 352 The new format is a tarball tzdb-VERSION.tar.lz with signature 353 file tzdb-VERSION.tar.lz.asc. It unpacks to a top-level directory 354 tzdb-VERSION containing the code and data of the traditional 355 two-tarball format, along with extra data that may be useful. 356 (Thanks to Antonio Diaz Diaz, Oscar van Vlijmen, and many others 357 for comments about the experimental format.) 358 359 The release version number is now more accurate in the usual case 360 where releases are built from a Git repository. For example, if 361 23 commits and some working-file changes have been made since 362 release 2016g, the version number is now something like 363 '2016g-23-g50556e3-dirty' instead of the misleading '2016g'. 364 Tagged releases use the same version number format as before, 365 e.g., '2016g'. To support the more-accurate version number, its 366 specification has moved from a line in the Makefile to a new 367 source file 'version'. 368 369 The experimental distribution contains a file to2050.tzs that 370 contains what should be the output of 'zdump -i -c 2050' on 371 primary zones. If this file is available, 'make check' now checks 372 that zdump generates this output. 373 374 'make check_web' now works on Fedora-like distributions. 375 376 Changes to documentation and commentary 377 378 tzfile.5 now documents the new restriction on POSIX TZ-like 379 strings that is now implemented by zic. 380 381 Comments now cite URLs for some 1917-1921 Russian DST decrees. 382 (Thanks to Alexander Belopolsky.) 383 384 tz-link.htm mentions JuliaTime (thanks to Curtis Vogt) and Time4J 385 (thanks to Meno Hochschild) and ThreeTen-Extra, and its 386 description of Java 8 has been brought up to date (thanks to 387 Stephen Colebourne). Its description of local time on Mars has 388 been updated to match current practice, and URLs have been updated 389 and some obsolete ones removed. 390 391 392 Release 2016f - 2016-07-05 16:26:51 +0200 393 394 Changes affecting future time stamps 395 396 The Egyptian government changed its mind on short notice, and 397 Africa/Cairo will not introduce DST starting 2016-07-07 after all. 398 (Thanks to Mina Samuel.) 399 400 Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00. 401 (Thanks to Stepan Golosunov.) 402 403 Changes to past and future time stamps 404 405 Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone 406 abbreviations instead of invented ones. 407 408 Changes affecting past time stamps 409 410 Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00. 411 (Thanks to Stepan Golosunov.) 412 413 414 Release 2016e - 2016-06-14 08:46:16 -0700 415 416 Changes affecting future time stamps 417 418 Africa/Cairo observes DST in 2016 from July 7 to the end of October. 419 Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.) 420 For future years, guess April's last Thursday to October's last 421 Thursday except for Ramadan. 422 423 Changes affecting past time stamps 424 425 Locations while uninhabited now use '-00', not 'zzz', as a 426 placeholder time zone abbreviation. This is inspired by Internet 427 RFC 3339 and is more consistent with numeric time zone 428 abbreviations already used elsewhere. The change affects several 429 arctic and antarctic locations, e.g., America/Cambridge_Bay before 430 1920 and Antarctica/Troll before 2005. 431 432 Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was 433 at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.) 434 435 Changes to code 436 437 zic now outputs a dummy transition at time 2**31 - 1 in zones 438 whose POSIX-style TZ strings contain a '<'. This mostly works 439 around Qt bug 53071 <https://bugreports.qt.io/browse/QTBUG-53071>. 440 (Thanks to Zhanibek Adilbekov for reporting the Qt bug.) 441 442 Changes affecting documentation and commentary 443 444 tz-link.htm says why governments should give plenty of notice for 445 time zone or DST changes, and refers to Matt Johnson's blog post. 446 447 tz-link.htm mentions Tzdata for Elixir. (Thanks to Matt Johnson.) 448 449 450 Release 2016d - 2016-04-17 22:50:29 -0700 451 452 Changes affecting future time stamps 453 454 America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30. 455 (Thanks to Alexander Krivenyshev for the heads-up.) 456 457 Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00. 458 (Thanks to Alexander Krivenyshev and Matt Johnson.) 459 460 New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers 461 Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29 462 at 02:00. (Thanks to Stepan Golosunov.) 463 464 Changes affecting past time stamps 465 466 New zone Europe/Kirov, split off from Europe/Volgograd. It covers 467 Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on 468 1989-03-26 at 02:00, roughly a year after Europe/Volgograd made 469 the same change. (Thanks to Stepan Golosunov.) 470 471 Russia and nearby locations had daylight-saving transitions on 472 1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on 473 1992-03-28 at 23:00 and 1992-09-26 at 23:00. (Thanks to Stepan 474 Golosunov.) 475 476 Many corrections to historical time in Kazakhstan from 1991 477 through 2005. (Thanks to Stepan Golosunov.) Replace Kazakhstan's 478 invented time zone abbreviations with numeric abbreviations. 479 480 Changes to commentary 481 482 Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references). 483 484 485 Release 2016c - 2016-03-23 00:51:27 -0700 486 487 Changes affecting future time stamps 488 489 Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.) 490 491 Chile reverts from permanent to seasonal DST. (Thanks to Juan 492 Correa for the heads-up, and to Tim Parenti for corrections.) 493 Guess that future transitions are August's and May's second 494 Saturdays at 24:00 mainland time. Also, call the period from 495 2014-09-07 through 2016-05-14 daylight saving time instead of 496 standard time, as that seems more appropriate now. 497 498 Changes affecting past time stamps 499 500 Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to 501 +02/+03 on 1989-03-26, not 1991-03-31. Europe/Volgograd changed 502 from +04/+05 to +03/+04 on 1988-03-27, not 1989-03-26. 503 (Thanks to Stepan Golosunov.) 504 505 Changes to commentary 506 507 Several updates and URLs for historical and proposed Russian changes. 508 (Thanks to Stepan Golosunov, Matt Johnson, and Alexander Krivenyshev.) 509 510 511 Release 2016b - 2016-03-12 17:30:14 -0800 512 513 Compatibility note 514 515 Starting with release 2016b, some data entries cause zic implementations 516 derived from tz releases 2005j through 2015e to issue warnings like 517 "time zone abbreviation differs from POSIX standard (+03)". 518 These warnings should not otherwise affect zic's output and can safely be 519 ignored on today's platforms, as the warnings refer to a restriction in 520 POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the 521 warnings is to upgrade to zic derived from tz releases 2015f and later. 522 523 Changes affecting future time stamps 524 525 New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and 526 Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on 527 2016-03-27 at 02:00 local time. They need distinct zones since their 528 post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and 529 Altai Republic, Russia, which will switch from +06 to +07 on the same date 530 and local time. The Astrakhan change is already official; the others have 531 passed the first reading in the State Duma and are extremely likely. 532 Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00. 533 (Thanks to Alexander Krivenyshev for the heads-up, and to Matt Johnson 534 and Stepan Golosunov for followup.) 535 536 As a trial of a new system that needs less information to be made up, 537 the new zones use numeric time zone abbreviations like "+04" 538 instead of invented abbreviations like "ASTT". 539 540 Haiti will not observe DST in 2016. (Thanks to Jean Antoine via 541 Steffen Thorsen.) 542 543 Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00. 544 (Thanks to Hannah Kreitem.) Guess future transitions will be March's last 545 Saturday at 01:00, not March's last Friday at 24:00. 546 547 Changes affecting past time stamps 548 549 Europe/Chisinau observed DST during 1990, and switched from +04 to 550 +03 at 1990-05-06 02:00, instead of switching from +03 to +02. 551 (Thanks to Stepan Golosunov.) 552 553 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not 554 KUYT/KUYST. (Thanks to Stepan Golosunov.) 555 556 Changes to code 557 558 tzselect's diagnostics and checking, and checktab.awk's checking, 559 have been improved. (Thanks to J William Piggott.) 560 561 tzcode now builds under MinGW. (Thanks to Ian Abbott and Esben Haabendal.) 562 563 tzselect now tests Julian-date TZ settings more accurately. 564 (Thanks to J William Piggott.) 565 566 Changes to commentary 567 568 Comments in zone tables have been improved. (Thanks to J William Piggott.) 569 570 tzselect again limits its menu comments so that menus fit on a 571 24x80 alphanumeric display. 572 573 A new web page tz-how-to.html. (Thanks to Bill Seymour.) 574 575 In the Theory file, the description of possible time zone abbreviations in 576 tzdata has been cleaned up, as the old description was unclear and 577 inconsistent. (Thanks to Alain Mouette for reporting the problem.) 578 579 580 Release 2016a - 2016-01-26 23:28:02 -0800 581 582 Changes affecting future time stamps 583 584 America/Cayman will not observe daylight saving this year after all. 585 Revert our guess that it would. (Thanks to Matt Johnson.) 586 587 Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00. 588 (Thanks to Alexander Krivenyshev.) 589 590 Asia/Tehran now has DST predictions for the year 2038 and later, 591 to be March 21 00:00 to September 21 00:00. This is likely better 592 than predicting no DST, albeit off by a day every now and then. 593 594 Changes affecting past and future time stamps 595 596 America/Metlakatla switched from PST all year to AKST/AKDT on 597 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.) 598 599 America/Santa_Isabel has been removed, and replaced with a 600 backward compatibility link to America/Tijuana. Its contents were 601 apparently based on a misreading of Mexican legislation. 602 603 Changes affecting past time stamps 604 605 Asia/Karachi's two transition times in 2002 were off by a minute. 606 (Thanks to Matt Johnson.) 607 608 Changes affecting build procedure 609 610 An installer can now combine leap seconds with use of the backzone file, 611 e.g., with 'make PACKRATDATA=backzone REDO=posix_right zones'. 612 The old 'make posix_packrat' rule is now marked as obsolescent. 613 (Thanks to Ian Abbott for an initial implementation.) 614 615 Changes affecting documentation and commentary 616 617 A new file LICENSE makes it easier to see that the code and data 618 are mostly public-domain. (Thanks to James Knight.) The three 619 non-public-domain files now use the current (3-clause) BSD license 620 instead of older versions of that license. 621 622 tz-link.htm mentions the BDE library (thanks to Andrew Paprocki), 623 CCTZ (thanks to Tim Parenti), TimeJones.com, and has a new section 624 on editing tz source files (with a mention of Sublime zoneinfo, 625 thanks to Gilmore Davidson). 626 627 The Theory and asia files now mention the 2015 book "The Global 628 Transformation of Time, 1870-1950", and cite a couple of reviews. 629 630 The America/Chicago entry now documents the informal use of US 631 central time in Fort Pierre, South Dakota. (Thanks to Rick 632 McDermid, Matt Johnson, and Steve Jones.) 633 634 635 Release 2015g - 2015-10-01 00:39:51 -0700 636 637 Changes affecting future time stamps 638 639 Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25. 640 (Thanks to Fatih.) 641 642 Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time. 643 (Thanks to Alexander Krivenyshev.) 644 645 Fiji's 2016 fall-back transition is scheduled for January 17, not 24. 646 (Thanks to Ken Rylander.) 647 648 Fort Nelson, British Columbia will not fall back on 2015-11-01. It has 649 effectively been on MST (-0700) since it advanced its clocks on 2015-03-08. 650 New zone America/Fort_Nelson. (Thanks to Matt Johnson.) 651 652 Changes affecting past time stamps 653 654 Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00. 655 656 Changes affecting code 657 658 localtime no longer mishandles America/Anchorage after 2037. 659 (Thanks to Bradley White for reporting the bug.) 660 661 On hosts with signed 32-bit time_t, localtime no longer mishandles 662 Pacific/Fiji after 2038-01-16 14:00 UTC. 663 664 The localtime module allows the variables 'timezone', 'daylight', 665 and 'altzone' to be in common storage shared with other modules, 666 and declares them in case the system <time.h> does not. 667 (Problems reported by Kees Dekker.) 668 669 On platforms with tm_zone, strftime.c now assumes it is not NULL. 670 This simplifies the code and is consistent with zdump.c. 671 (Problem reported by Christos Zoulas.) 672 673 Changes affecting documentation 674 675 The tzfile man page now documents that transition times denote the 676 starts (not the ends) of the corresponding time periods. 677 (Ambiguity reported by Bill Seymour.) 678 679 680 Release 2015f - 2015-08-10 18:06:56 -0700 681 682 Changes affecting future time stamps 683 684 North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) 685 The abbreviation remains "KST". (Thanks to Robert Elz.) 686 687 Uruguay no longer observes DST. (Thanks to Steffen Thorsen 688 and Pablo Camargo.) 689 690 Changes affecting past and future time stamps 691 692 Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. 693 (Thanks to Roman Tudos.) 694 695 Changes affecting data format and code 696 697 zic's '-y YEARISTYPE' option is no longer documented. The TYPE 698 field of a Rule line should now be '-'; the old values 'even', 699 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. 700 Although the implementation has not changed, these features do not 701 work in the default installation, they are not used in the data, 702 and they are now considered obsolescent. 703 704 zic now checks that two rules don't take effect at the same time. 705 (Thanks to Jon Skeet and Arthur David Olson.) Constraints on 706 simultaneity are now documented. 707 708 The two characters '%z' in a zone format now stand for the UTC 709 offset, e.g., '-07' for seven hours behind UTC and '+0530' for 710 five hours and thirty minutes ahead. This better supports time 711 zone abbreviations conforming to POSIX.1-2001 and later. 712 713 Changes affecting installed data files 714 715 Comments for America/Halifax and America/Glace_Bay have been improved. 716 (Thanks to Brian Inglis.) 717 718 Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, 719 Europe/Sofia, and Europe/Tallinn. This yields slightly smaller 720 installed data files for Europe/Simferopol and Europe/Tallinn. 721 It does not affect timestamps. (Thanks to Howard Hinnant.) 722 723 Changes affecting code 724 725 zdump and zic no longer warn about valid time zone abbreviations 726 like '-05'. 727 728 Some Visual Studio 2013 warnings have been suppressed. 729 (Thanks to Kees Dekker.) 730 731 'date' no longer sets the time of day and its -a, -d, -n and -t 732 options have been removed. Long obsolescent, the implementation 733 of these features had porting problems. Builders no longer need 734 to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. 735 (Thanks to Kees Dekker for pointing out the problem.) 736 737 Changes affecting documentation 738 739 The Theory file mentions naming issues earlier, as these seem to be 740 poorly publicized (thanks to Gilmore Davidson for reporting the problem). 741 742 tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). 743 744 Mention that Herbert Samuel introduced the term "Summer Time". 745 746 747 Release 2015e - 2015-06-13 10:56:02 -0700 748 749 Changes affecting future time stamps 750 751 Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, 752 not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.) 753 754 Assume Cayman Islands will observe DST starting next year, using US rules. 755 Although it isn't guaranteed, it is the most likely. 756 757 Changes affecting data format 758 759 The file 'iso3166.tab' now uses UTF-8, so that its entries can better 760 spell the names of land Islands, Cte d'Ivoire, and Runion. 761 762 Changes affecting code 763 764 When displaying data, tzselect converts it to the current locale's 765 encoding if the iconv command works. (Problem reported by random832.) 766 767 tzselect no longer mishandles Dominica, fixing a bug introduced 768 in Release 2014f. (Problem reported by Owen Leibman.) 769 770 zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\". 771 This fixes a bug introduced in Release 2014f. 772 (Problem reported by Leonardo Chiquitto.) 773 774 775 Release 2015d - 2015-04-24 08:09:46 -0700 776 777 Changes affecting future time stamps 778 779 Egypt will not observe DST in 2015 and will consider canceling it 780 permanently. For now, assume no DST indefinitely. 781 (Thanks to Ahmed Nazmy and Tim Parenti.) 782 783 Changes affecting past time stamps 784 785 America/Whitehorse switched from UT -09 to -08 on 1967-05-28, not 786 1966-07-01. Also, Yukon's time zone history is documented better. 787 (Thanks to Brian Inglis and Dennis Ferguson.) 788 789 Change affecting past and future time zone abbreviations 790 791 The abbreviations for Hawaii-Aleutian standard and daylight times 792 have been changed from HAST/HADT to HST/HDT, as per US Government 793 Printing Office style. This affects only America/Adak since 1983, 794 as America/Honolulu was already using the new style. 795 796 Changes affecting code 797 798 zic has some minor performance improvements. 799 800 801 Release 2015c - 2015-04-11 08:55:55 -0700 802 803 Changes affecting future time stamps 804 805 Egypt's spring-forward transition is at 24:00 on April's last Thursday, 806 not 00:00 on April's last Friday. 2015's transition will therefore be on 807 Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 808 apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 809 810 Changes affecting past time stamps 811 812 The following changes affect some pre-1991 Chile-related time stamps 813 in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 814 815 The 1910 transition was January 10, not January 1. 816 817 The 1918 transition was September 10, not September 1. 818 819 The UT -04 time observed from 1932 to 1942 is now considered to 820 be standard time, not year-round DST. 821 822 Santiago observed DST (UT -03) from 1946-07-15 through 823 1946-08-31, then reverted to standard time, then switched to -05 824 on 1947-04-01. 825 826 Assume transitions before 1968 were at 00:00, since we have no data 827 saying otherwise. 828 829 The spring 1988 transition was 1988-10-09, not 1988-10-02. 830 The fall 1990 transition was 1990-03-11, not 1990-03-18. 831 832 Assume no UTC offset change for Pacific/Easter on 1890-01-01, 833 and omit all transitions on Pacific/Easter from 1942 through 1946 834 since we have no data suggesting that they existed. 835 836 One more zone has been turned into a link, as it differed 837 from an existing zone only for older time stamps. As usual, 838 this change affects UTC offsets in pre-1970 time stamps only. 839 The zone's old contents have been moved to the 'backzone' file. 840 The affected zone is America/Montreal. 841 842 Changes affecting commentary 843 844 Mention the TZUpdater tool. 845 846 Mention "The Time Now". (Thanks to Brandon Ramsey.) 847 848 849 Release 2015b - 2015-03-19 23:28:11 -0700 850 851 Changes affecting future time stamps 852 853 Mongolia will start observing DST again this year, from the last 854 Saturday in March at 02:00 to the last Saturday in September at 00:00. 855 (Thanks to Ganbold Tsagaankhuu.) 856 857 Palestine will start DST on March 28, not March 27. Also, 858 correct the fall 2014 transition from September 26 to October 24. 859 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 860 861 Changes affecting past time stamps 862 863 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 864 regression. (Thanks to Stuart Bishop for reporting the problem.) 865 866 Some more zones have been turned into links, when they differed 867 from existing zones only for older time stamps. As usual, 868 these changes affect UTC offsets in pre-1970 time stamps only. 869 Their old contents have been moved to the 'backzone' file. 870 The affected zones are: America/Antigua, America/Cayman, 871 Pacific/Midway, and Pacific/Saipan. 872 873 Changes affecting time zone abbreviations 874 875 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 876 (Thanks to Hank W.) 877 878 Changes affecting code 879 880 Fix integer overflow bug in reference 'mktime' implementation. 881 (Problem reported by Jrg Richter.) 882 883 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 884 to be used in the same executable as standard-library time_t functions. 885 (Problems reported by Bradley White.) 886 887 Changes affecting commentary 888 889 Cite the recent Mexican decree changing Quintana Roo's time zone. 890 (Thanks to Carlos Ral Perasso.) 891 892 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 893 894 Update info about Mars time. 895 896 897 Release 2015a - 2015-01-29 22:35:20 -0800 898 899 Changes affecting future time stamps 900 901 The Mexican state of Quintana Roo, represented by America/Cancun, 902 will shift from Central Time with DST to Eastern Time without DST 903 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 904 905 Chile will not change clocks in April or thereafter; its new standard time 906 will be its old daylight saving time. This affects America/Santiago, 907 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 908 909 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 910 (Thanks to Tim Parenti.) 911 912 Changes affecting past time stamps 913 914 Iceland observed DST in 1919 and 1921, and its 1939 fallback 915 transition was Oct. 29, not Nov. 29. Remove incorrect data from 916 Shanks about time in Iceland between 1837 and 1908. 917 918 Some more zones have been turned into links, when they differed 919 from existing zones only for older time stamps. As usual, 920 these changes affect UTC offsets in pre-1970 time stamps only. 921 Their old contents have been moved to the 'backzone' file. 922 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 923 and Asia/Muscat. 924 925 Changes affecting code 926 927 tzalloc now scrubs time zone abbreviations compatibly with the way 928 that tzset always has, by replacing invalid bytes with '_' and by 929 shortening too-long abbreviations. 930 931 tzselect ports to POSIX awk implementations, no longer mishandles 932 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 933 settings to the user. (Thanks to Stefan Kuhn.) 934 935 Changes affecting build procedure 936 937 'make check' now checks for links to links in the data. 938 One such link (for Africa/Asmera) has been fixed. 939 (Thanks to Stephen Colebourne for pointing out the problem.) 940 941 Changes affecting commentary 942 943 The leapseconds file commentary now mentions the expiration date. 944 (Problem reported by Martin Burnicki.) 945 946 Update Mexican Library of Congress URL. 947 948 949 Release 2014j - 2014-11-10 17:37:11 -0800 950 951 Changes affecting current and future time stamps 952 953 Turks & Caicos' switch from US eastern time to UT -04 year-round 954 did not occur on 2014-11-02 at 02:00. It's currently scheduled 955 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 956 957 Changes affecting past time stamps 958 959 Many pre-1989 time stamps have been corrected for Asia/Seoul and 960 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 961 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 962 longer guess that Pyongyang mimicked Seoul time after World War II, 963 as this is politically implausible. 964 965 Some more zones have been turned into links, when they differed 966 from existing zones only for older time stamps. As usual, 967 these changes affect UTC offsets in pre-1970 time stamps only. 968 Their old contents have been moved to the 'backzone' file. 969 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 970 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 971 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 972 Indian/Mayotte. 973 974 Changes affecting commentary 975 976 The commentary is less enthusiastic about Shanks as a source, 977 and is more careful to distinguish UT from UTC. 978 979 980 Release 2014i - 2014-10-21 22:04:57 -0700 981 982 Changes affecting future time stamps 983 984 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 985 (Thanks to Ken Rylander for the heads-up.) Guess that future 986 years will use a similar pattern. 987 988 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 989 that plans to switch from UT +10 to +11 on 2014-12-28 at 02:00. 990 (Thanks to Kiley Walbom for the heads-up.) 991 992 Changes affecting time zone abbreviations 993 994 Since Belarus is not changing its clocks even though Moscow is, 995 the time zone abbreviation in Europe/Minsk is changing from FET 996 to its more-traditional value MSK on 2014-10-26 at 01:00. 997 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 998 999 The new abbreviation IDT stands for the pre-1976 use of UT +08 in 1000 Indochina, to distinguish it better from ICT (+07). 1001 1002 Changes affecting past time stamps 1003 1004 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 1005 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 1006 authoritative book). Asia/Ho_Chi_Minh has been added to 1007 zone1970.tab, to give tzselect users in Vietnam two choices, 1008 since north and south Vietnam disagreed after our 1970 cutoff. 1009 1010 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 1011 they differed from existing zones only for older time stamps. As 1012 usual, these changes affect pre-1970 time stamps only. Their old 1013 contents have been moved to the 'backzone' file. 1014 1015 Changes affecting code 1016 1017 The time-related library functions now set errno on failure, and 1018 some crashes in the new tzalloc-related library functions have 1019 been fixed. (Thanks to Christos Zoulas for reporting most of 1020 these problems and for suggesting fixes.) 1021 1022 If USG_COMPAT is defined and the requested timestamp is standard time, 1023 the tz library's localtime and mktime functions now set the extern 1024 variable timezone to a value appropriate for that timestamp; and 1025 similarly for ALTZONE, daylight saving time, and the altzone variable. 1026 This change is a companion to the tzname change in 2014h, and is 1027 designed to make timezone and altzone more compatible with tzname. 1028 1029 The tz library's functions now set errno to EOVERFLOW if they fail 1030 because the result cannot be represented. ctime and ctime_r now 1031 return NULL and set errno when a timestamp is out of range, rather 1032 than having undefined behavior. 1033 1034 Some bugs associated with the new 2014g functions have been fixed. 1035 This includes a bug that largely incapacitated the new functions 1036 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 1037 It also includes some uses of uninitialized variables after tzalloc. 1038 The new code uses the standard type 'ssize_t', which the Makefile 1039 now gives porting advice about. 1040 1041 Changes affecting commentary 1042 1043 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 1044 1045 1046 Release 2014h - 2014-09-25 18:59:03 -0700 1047 1048 Changes affecting past timestamps 1049 1050 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 1051 1052 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 1053 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 1054 1055 Some more zones have been turned into links, when they differed 1056 from existing zones only for older timestamps. As usual, 1057 these changes affect UTC offsets in pre-1970 timestamps only. 1058 Their old contents have been moved to the 'backzone' file. 1059 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 1060 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 1061 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 1062 1063 Changes affecting code 1064 1065 zdump -V and -v now output gmtoff= values on all platforms, 1066 not merely on platforms defining TM_GMTOFF. 1067 1068 The tz library's localtime and mktime functions now set tzname to a value 1069 appropriate for the requested timestamp, and zdump now uses this 1070 on platforms not defining TM_ZONE, fixing a 2014g regression. 1071 (Thanks to Tim Parenti for reporting the problem.) 1072 1073 The tz library no longer sets tzname if localtime or mktime fails. 1074 1075 zdump -c no longer mishandles transitions near year boundaries. 1076 (Thanks to Tim Parenti for reporting the problem.) 1077 1078 An access to uninitialized data has been fixed. 1079 (Thanks to Jrg Richter for reporting the problem.) 1080 1081 When THREAD_SAFE is defined, the code ports to the C11 memory model. 1082 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 1083 and two threads race to initialize data used by gmtime-like functions. 1084 (Thanks to Andy Heninger for reporting the problems.) 1085 1086 Changes affecting build procedure 1087 1088 'make check' now checks better for properly-sorted data. 1089 1090 Changes affecting documentation and commentary 1091 1092 zdump's gmtoff=N output is now documented, and its isdst=D output 1093 is now documented to possibly output D values other than 0 or 1. 1094 1095 zdump -c's treatment of years is now documented to use the 1096 Gregorian calendar and Universal Time without leap seconds, 1097 and its behavior at cutoff boundaries is now documented better. 1098 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 1099 1100 Programs are now documented to use the proleptic Gregorian calendar. 1101 (Thanks to Alan Barrett for the suggestion.) 1102 1103 Fractional-second GMT offsets have been documented for civil time 1104 in 19th-century Chennai, Jakarta, and New York. 1105 1106 1107 Release 2014g - 2014-08-28 12:31:23 -0700 1108 1109 Changes affecting future timestamps 1110 1111 Turks & Caicos is switching from US eastern time to UT -04 1112 year-round, modeled as a switch on 2014-11-02 at 02:00. 1113 [As noted in 2014j, this switch was later delayed.] 1114 1115 Changes affecting past timestamps 1116 1117 Time in Russia or the USSR before 1926 or so has been corrected by 1118 a few seconds in the following zones: Asia/Irkutsk, 1119 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 1120 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 1121 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 1122 Vladimir Karpinsky.) 1123 1124 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 1125 This affects 1911 timestamps in Africa/Bissau, Africa/Luanda, 1126 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 1127 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 1128 (Thanks to Stephen Colebourne for pointing to the decree.) 1129 1130 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 1131 1132 A new file 'backzone' contains data which may appeal to 1133 connoisseurs of old timestamps, although it is out of scope for 1134 the tz database, is often poorly sourced, and contains some data 1135 that is known to be incorrect. The new file is not recommended 1136 for ordinary use and its entries are not installed by default. 1137 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 1138 Isle of Man entries.) 1139 1140 Some more zones have been turned into links, when they differed 1141 from existing zones only for older timestamps. As usual, 1142 these changes affect UTC offsets in pre-1970 timestamps only. 1143 Their old contents have been moved to the 'backzone' file. 1144 The affected zones are: Africa/Bangui, Africa/Brazzaville, 1145 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 1146 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 1147 1148 Changes affecting code 1149 1150 Unless NETBSD_INSPIRED is defined to 0, the tz library now 1151 supplies functions for creating and using objects that represent 1152 time zones. The new functions are tzalloc, tzfree, localtime_rz, 1153 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 1154 time2posix_z. They are intended for performance: for example, 1155 localtime_rz (unlike localtime_r) is trivially thread-safe without 1156 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 1157 functions, and to Alan Barrett and Jonathan Lennox for helping to 1158 debug the change.) 1159 1160 zdump now builds with the tz library unless USE_LTZ is defined to 0, 1161 This lets zdump use tz features even if the system library lacks them. 1162 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 1163 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 1164 1165 zdump now uses localtime_rz if available, as it's significantly faster, 1166 and it can help zdump better diagnose invalid time zone names. 1167 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 1168 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 1169 not available, zdump now uses localtime_r and tzset if available, 1170 as this is a bit cleaner and faster than plain localtime. Compile 1171 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 1172 lacks these two functions. 1173 1174 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 1175 Although not needed for tz's own applications, which are single-threaded, 1176 this supports POSIX better if the tz library is used in multithreaded apps. 1177 1178 Some crashes have been fixed when zdump or the tz library is given 1179 invalid or outlandish input. 1180 1181 The tz library no longer mishandles leap seconds on platforms with 1182 unsigned time_t in time zones that lack ordinary transitions after 1970. 1183 1184 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 1185 already defined, to make it easier to configure on common platforms. 1186 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 1187 1188 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 1189 assumes that reading uninitialized memory yields garbage values 1190 but does not cause other problems such as traps. 1191 1192 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 1193 more likely to guess right for ambiguous timestamps near 1194 transitions where tm_isdst does not change. 1195 1196 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 1197 strftime_l for compatibility with recent versions of POSIX. 1198 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 1199 to 1 on recent POSIX versions, and to 0 otherwise. 1200 1201 tzselect -c now uses a hybrid distance measure that works better 1202 in Africa. (Thanks to Alan Barrett for noting the problem.) 1203 1204 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 1205 or when time_tz is defined. 1206 1207 When HAVE_UTMPX_H is set the 'date' command now builds on systems 1208 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 1209 the date it updates the wtmpx file if _PATH_WTMPX is defined. 1210 This affects GNU/Linux and similar systems. 1211 1212 For easier maintenance later, some C code has been simplified, 1213 some lint has been removed, and the code has been tweaked so that 1214 plain 'make' is more likely to work. 1215 1216 The C type 'bool' is now used for boolean values, instead of 'int'. 1217 1218 The long-obsolete LOCALE_HOME code has been removed. 1219 1220 The long-obsolete 'gtime' function has been removed. 1221 1222 Changes affecting build procedure 1223 1224 'zdump' no longer links in ialloc.o, as it's not needed. 1225 1226 'make check_time_t_alternatives' no longer assumes GNU diff. 1227 1228 Changes affecting distribution tarballs 1229 1230 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 1231 the tzdata tarball instead of the tzcode tarball, since they help 1232 maintain the data. The NEWS and Theory files are now also 1233 distributed in the tzdata tarball, as they're relevant for data. 1234 (Thanks to Alan Barrett for pointing this out.) Also, the 1235 leapseconds.awk file is no longer distributed in the tzcode 1236 tarball, since it belongs in the tzdata tarball (where 2014f 1237 inadvertently also distributed it). 1238 1239 Changes affecting documentation and commentary 1240 1241 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 1242 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 1243 for debugging it.) 1244 1245 The man pages have been updated to use function prototypes, 1246 to document thread-safe variants like localtime_r, and to document 1247 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 1248 mktime_z. 1249 1250 The fields in Link lines have been renamed to be more descriptive 1251 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 1252 and LINK-TO has become LINK-NAME. 1253 1254 tz-link.htm mentions the IETF's tzdist working group; Windows 1255 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 1256 1257 Some broken URLs have been fixed in the commentary. (Thanks to 1258 Lester Caine.) 1259 1260 Commentary about Philippines DST has been updated, and commentary 1261 on pre-1970 time in India has been added. 1262 1263 1264 Release 2014f - 2014-08-05 17:42:36 -0700 1265 1266 Changes affecting future timestamps 1267 1268 Russia will subtract an hour from most of its time zones on 2014-10-26 1269 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 1270 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 1271 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 1272 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 1273 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 1274 (Europe/Samara) are not changing their clocks. The changed zones are 1275 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 1276 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 1277 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 1278 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 1279 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 1280 but not its UTC offset. Two zones are added: Asia/Chita (split 1281 from Asia/Yakutsk, and also with two hours subtracted) and 1282 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 1283 subtracted). (Thanks to Tim Parenti for much of the above.) 1284 1285 Changes affecting time zone abbreviations 1286 1287 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 1288 and similarly for the other Australian zones. That is, for eastern 1289 standard and daylight saving time the abbreviations are AEST and AEDT 1290 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 1291 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 1292 This change does not affect UTC offsets, only time zone abbreviations. 1293 (Thanks to Rich Tibbett and many others.) 1294 1295 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UT +07) 1296 effective 2014-10-26 at 02:00 local time. 1297 1298 The time zone abbreviation for Xinjiang Time (observed in rmqi) 1299 has been changed from URUT to XJT. (Thanks to Luther Ma.) 1300 1301 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 1302 Similarly, prefer EET/EEST for eastern European time in Russia. 1303 1304 Change time zone abbreviations in (western) Samoa to use "ST" and 1305 "DT" suffixes, as this is more likely to match common practice. 1306 Prefix "W" to (western) Samoa time when its standard-time offset 1307 disagrees with that of American Samoa. 1308 1309 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 1310 1311 Time zone abbreviations have been updated for Japan's two time 1312 zones used 1896-1937. JWST now stands for Western Standard 1313 Time, and JCST for Central Standard Time (formerly this was CJT). 1314 These abbreviations are now used for time in Korea, Taiwan, 1315 and Sakhalin while controlled by Japan. 1316 1317 Changes affecting past timestamps 1318 1319 China's five zones have been simplified to two, since the post-1970 1320 differences in the other three seem to have been imaginary. The 1321 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 1322 removed; backwards-compatibility links still work, albeit with 1323 different behaviors for timestamps before May 1980. Asia/Urumqi's 1324 1980 transition to UT +08 has been removed, so that it is now at 1325 +06 and not +08. (Thanks to Luther Ma and to Alois Treindl; 1326 Treindl sent helpful translations of two papers by Guo Qingsheng.) 1327 1328 Some zones have been turned into links, when they differed from existing 1329 zones only for older UTC offsets where data entries were likely invented. 1330 These changes affect UTC offsets in pre-1970 timestamps only. This is 1331 similar to the change in release 2013e, except this time for western 1332 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 1333 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 1334 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 1335 Atlantic/St_Helena. This also affects the backwards-compatibility 1336 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 1337 Tim Parenti, and David Patte for reporting problems in earlier 1338 versions of this change.) 1339 1340 Asia/Shanghai's pre-standard-time UT offset has been changed from 1341 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 1342 transition to standard time has been changed from 1928 to 1901. 1343 1344 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 1345 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 1346 In 1946 it observed DST from 05-15 through 09-30; in 1947 1347 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 1348 (Thanks to Yu-Cheng Chuang.) 1349 1350 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 1351 1352 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 1353 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 1354 1355 Pacific/Pago_Pago has been changed from UT -11:30 to -11 for the 1356 period from 1911 to 1950. 1357 1358 Pacific/Chatham has been changed to New Zealand standard time plus 1359 45 minutes for the period before 1957, reflecting a 1956 remark in 1360 the New Zealand parliament. 1361 1362 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 1363 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 1364 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 1365 not 04-06 at 02:00; and there was no DST in 1920. 1366 1367 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 1368 1369 Time in Russia before 1927 or so has been corrected by a few seconds in 1370 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 1371 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 1372 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 1373 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 1374 1375 Changes affecting data format 1376 1377 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 1378 The new file's extended format allows multiple country codes per zone. 1379 The older file is still installed but is deprecated; its format is 1380 not changing and it will still be distributed for a while, but new 1381 applications should use the new file. 1382 1383 The new file format simplifies maintenance of obscure locations. 1384 To test this, it adds coverage for the Crozet Islands and the 1385 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 1386 1387 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 1388 It is still ASCII now, but commentary about the switch has been added. 1389 The new file 'zone1970.tab' already uses UTF-8. 1390 1391 Changes affecting code 1392 1393 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 1394 is defined. (Thanks to Elliott Hughes for reporting the problem.) 1395 1396 'zic' no longer mishandles input when ignoring case in locales that 1397 are not compatible with English, e.g., unibyte Turkish locales when 1398 compiled with HAVE_GETTEXT. 1399 1400 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 1401 they no longer use ASCII '-' as if it were a dash. 1402 1403 'zic' now rejects output file names that contain '.' or '..' components. 1404 (Thanks to Tim Parenti for reporting the problem.) 1405 1406 'zic -v' now warns about output file names that do not follow 1407 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 1408 David Olson for starting the ball rolling on this.) 1409 1410 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 1411 1412 Changes affecting build procedure 1413 1414 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 1415 (Thanks to John Cochran.) 1416 1417 Changes affecting documentation and commentary 1418 1419 The 'Theory' file documents legacy names, the longstanding 1420 exceptions to the POSIX-inspired file name rules. 1421 1422 The 'zic' documentation clarifies the role of time types when 1423 interpreting dates. (Thanks to Arthur David Olson.) 1424 1425 Documentation and commentary now prefer UTF-8 to US-ASCII, 1426 allowing the use of proper accents in foreign words and names. 1427 Code and data have not changed because of this. (Thanks to 1428 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 1429 this.) 1430 1431 Non-HTML documentation and commentary now use plain-text URLs instead of 1432 HTML insertions, and are more consistent about bracketing URLs when they 1433 are not already surrounded by white space. (Thanks to suggestions by 1434 Steffen Nurpmeso.) 1435 1436 There is new commentary about Xujiahui Observatory, the five time-zone 1437 project in China from 1918 to 1949, timekeeping in Japanese-occupied 1438 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 1439 warlord Jin Shuren in the data. 1440 1441 Commentary about the coverage of each Russian zone has been standardized. 1442 (Thanks to Tim Parenti). 1443 1444 There is new commentary about contemporary timekeeping in Ethiopia. 1445 1446 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 1447 1448 There is new commentary about time in Poland in 1919. 1449 1450 Proper credit has been given to DST inventor George Vernon Hudson. 1451 1452 Commentary about time in Metlakatla, AK and Resolute, NU has been 1453 improved, with a new source for the former. 1454 1455 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 1456 is uninhabited. 1457 1458 Commentary about permanent Antarctic bases has been updated. 1459 1460 Several typos have been corrected. (Thanks to Tim Parenti for 1461 contributing some of these fixes.) 1462 1463 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 1464 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 1465 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 1466 (Thanks to a heads-up from Dirkjan Ochtman.) 1467 1468 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 1469 have been removed. These obsolescent US Naval Observatory entries were no 1470 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 1471 1472 1473 Release 2014e - 2014-06-12 21:53:52 -0700 1474 1475 Changes affecting near-future timestamps 1476 1477 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 1478 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 1479 switch to standard time at 24:00 the last Thursday before Ramadan, and 1480 back to DST at 00:00 the first Friday after Ramadan. 1481 1482 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 1483 to Milamber Space Network.) Guess that from 2015 on Morocco will 1484 temporarily switch to standard time at 03:00 the last Saturday before 1485 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 1486 1487 Changes affecting past timestamps 1488 1489 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 1490 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 1491 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 1492 in 1991. (Thanks to Hank W. for reporting the problems.) 1493 1494 Changes affecting commentary 1495 1496 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 1497 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 1498 removes stale pointers to World Time Explorer and WORLDTIME. 1499 1500 1501 Release 2014d - 2014-05-27 21:34:40 -0700 1502 1503 Changes affecting code 1504 1505 zic no longer generates files containing timestamps before the Big Bang. 1506 This works around GNOME bug 730332 1507 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 1508 (Thanks to Leonardo Chiquitto for reporting the bug, and to 1509 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 1510 1511 Changes affecting documentation 1512 1513 tz-link.htm now mentions GNOME. 1514 1515 1516 Release 2014c - 2014-05-13 07:44:13 -0700 1517 1518 Changes affecting near-future timestamps 1519 1520 Egypt observes DST starting 2014-05-15 at 24:00. 1521 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 1522 Details have not been announced, except that DST will not be observed 1523 during Ramadan. Guess that DST will stop during the same Ramadan dates as 1524 Morocco, and that Egypt's future spring and fall transitions will be the 1525 same as 2010 when it last observed DST, namely April's last Friday at 1526 00:00 to September's last Thursday at 23:00 standard time. Also, guess 1527 that Ramadan transitions will be at 00:00 standard time. 1528 1529 Changes affecting code 1530 1531 zic now generates transitions for minimum time values, eliminating guesswork 1532 when handling low-valued timestamps. (Thanks to Arthur David Olson.) 1533 1534 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 1535 1536 Changes affecting commentary and documentation 1537 1538 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 1539 1540 1541 Release 2014b - 2014-03-24 21:28:50 -0700 1542 1543 Changes affecting near-future timestamps 1544 1545 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 1546 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 1547 1548 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 1549 Bengt-Inge Larsson.) This is currently an approximation; a better version 1550 will require the zic and localtime fixes mentioned below, and the plan is 1551 to wait for a while until at least the zic fixes propagate. 1552 1553 Changes affecting code 1554 1555 'zic' and 'localtime' no longer reject locations needing four transitions 1556 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 1557 Also, 'zic' avoids some unlikely failures due to integer overflow. 1558 1559 Changes affecting build procedure 1560 1561 'make check' now detects Rule lines defined but never used. 1562 The NZAQ rules, an instance of this problem, have been removed. 1563 1564 Changes affecting commentary and documentation 1565 1566 Fix Tuesday/Thursday typo in description of time in Israel. 1567 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 1568 1569 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 1570 to Donald MacQueen.) Instead, the Microsoft Windows Store app 1571 library supports them. 1572 1573 Add comments about Johnston Island time in the 1960s. 1574 (Thanks to Lyle McElhaney.) 1575 1576 Morocco's 2014 DST start will be as predicted. 1577 (Thanks to Sebastien Willemijns.) 1578 1579 1580 Release 2014a - 2014-03-07 23:30:29 -0800 1581 1582 Changes affecting near-future timestamps 1583 1584 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 1585 the heads-up, and to Tim Parenti for simplifying the update.) 1586 1587 Changes affecting past timestamps 1588 1589 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 1590 (Thanks to Steffen Thorsen.) 1591 1592 Ukraine switched from Moscow to Eastern European time on 1990-07-01 1593 (not 1992-01-01), and observed DST during the entire next winter. 1594 (Thanks to Vladimir in Moscow via Alois Treindl.) 1595 1596 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 1597 (Thanks to Avigdor Finkelstein.) 1598 1599 Changes affecting code 1600 1601 A uninitialized-storage bug in 'localtime' has been fixed. 1602 (Thanks to Logan Chien.) 1603 1604 Changes affecting the build procedure 1605 1606 The settings for 'make check_web' now default to Ubuntu 13.10. 1607 1608 Changes affecting commentary and documentation 1609 1610 The boundary of the US Pacific time zone is given more accurately. 1611 (Thanks to Alan Mintz.) 1612 1613 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 1614 1615 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 1616 1617 Better descriptions of countries with same time zone history as 1618 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 1619 1620 Several changes affect tz-link.htm, the main web page. 1621 1622 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 1623 David Braverman). 1624 1625 Mention xCal (Internet RFC 6321) and jCal. 1626 1627 Microsoft has some support for tz database names. 1628 1629 CLDR data formats include both XML and JSON. 1630 1631 Mention Maggiolo's map of solar vs standard time. 1632 (Thanks to Arthur David Olson.) 1633 1634 Mention TZ4Net. (Thanks to Matt Johnson.) 1635 1636 Mention the timezone-olson Haskell package. 1637 1638 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 1639 1640 Remove moribund links to daylight-savings-time.info and to 1641 Simple Timer + Clocks. 1642 1643 Update two links. (Thanks to Oscar van Vlijmen.) 1644 1645 Fix some formatting glitches, e.g., remove random newlines from 1646 abbr elements' title attributes. 1647 1648 1649 Release 2013i - 2013-12-17 07:25:23 -0800 1650 1651 Changes affecting near-future timestamps: 1652 1653 Jordan switches back to standard time at 00:00 on December 20, 2013. 1654 The 2006-2011 transition schedule is planned to resume in 2014. 1655 (Thanks to Steffen Thorsen.) 1656 1657 Changes affecting past timestamps: 1658 1659 In 2004, Cuba began DST on March 28, not April 4. 1660 (Thanks to Steffen Thorsen.) 1661 1662 Changes affecting code 1663 1664 The compile-time flag NOSOLAR has been removed, as nowadays the 1665 benefit of slightly shrinking runtime table size is outweighed by the 1666 cost of disallowing potential future updates that exceed old limits. 1667 1668 Changes affecting documentation and commentary 1669 1670 The files solar87, solar88, and solar89 are no longer distributed. 1671 They were a negative experiment - that is, a demonstration that 1672 tz data can represent solar time only with some difficulty and error. 1673 Their presence in the distribution caused confusion, as Riyadh 1674 civil time was generally not solar time in those years. 1675 1676 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 1677 1678 1679 Release 2013h - 2013-10-25 15:32:32 -0700 1680 1681 Changes affecting current and future timestamps: 1682 1683 Libya has switched its UT offset back to +02 without DST, instead 1684 of +01 with DST. (Thanks to Even Scharning.) 1685 1686 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 1687 (Thanks to Gwillim Law.) 1688 1689 Changes affecting future timestamps: 1690 1691 Acre and (we guess) western Amazonas will switch from UT -04 to -05 1692 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 1693 (Thanks to Steffen Thorsen.) 1694 1695 Add entries for DST transitions in Morocco in the year 2038. 1696 This avoids some year-2038 glitches introduced in 2013g. 1697 (Thanks to Yoshito Umaoka for reporting the problem.) 1698 1699 Changes affecting API 1700 1701 The 'tzselect' command no longer requires the 'select' command, 1702 and should now work with /bin/sh on more platforms. It also works 1703 around a bug in BusyBox awk before version 1.21.0. (Thanks to 1704 Patrick 'P. J.' McDermott and Alan Barrett.) 1705 1706 Changes affecting code 1707 1708 Fix localtime overflow bugs with 32-bit unsigned time_t. 1709 1710 zdump no longer assumes sscanf returns maximal values on overflow. 1711 1712 Changes affecting the build procedure 1713 1714 The builder can specify which programs to use, if any, instead of 1715 'ar' and 'ranlib', and libtz.a is now built locally before being 1716 installed. (Thanks to Michael Forney.) 1717 1718 A dependency typo in the 'zdump' rule has been fixed. 1719 (Thanks to Andrew Paprocki.) 1720 1721 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 1722 work as specified by POSIX.2-1992 or later; this is portable nowadays. 1723 1724 'make clean' no longer removes 'leapseconds', since it's 1725 host-independent and is part of the distribution. 1726 1727 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 1728 1729 Changes affecting documentation and commentary 1730 1731 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 1732 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 1733 1734 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 1735 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 1736 longer maintained) and for old advisories. SOFA now does C. 1737 1738 Release 2013g - 2013-09-30 21:08:26 -0700 1739 1740 Changes affecting current and near-future timestamps 1741 1742 Morocco now observes DST from the last Sunday in March to the last 1743 Sunday in October, not April to September respectively. (Thanks 1744 to Steffen Thorsen.) 1745 1746 Changes affecting 'zic' 1747 1748 'zic' now runs on platforms that lack both hard links and symlinks. 1749 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 1750 Also, fix some bugs on platforms that lack hard links but have symlinks. 1751 1752 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 1753 to predict the far future, fixing a bug introduced in 2013e. 1754 1755 Changes affecting the build procedure 1756 1757 The 'leapseconds' file is again put into the tzdata tarball. 1758 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 1759 Matt Burgess and Ian Abbott.) The timestamps of these and other 1760 dependent files in tarballs are adjusted more consistently. 1761 1762 Changes affecting documentation and commentary 1763 1764 The README file is now part of the data tarball as well as the code. 1765 It now states that files are public domain unless otherwise specified. 1766 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 1767 Its details about the 1989 release moved to a place of honor near 1768 the end of NEWS. 1769 1770 1771 Release 2013f - 2013-09-24 23:37:36 -0700 1772 1773 Changes affecting near-future timestamps 1774 1775 Tocantins will very likely not observe DST starting this spring. 1776 (Thanks to Steffen Thorsen.) 1777 1778 Jordan will likely stay at UT +03 indefinitely, and will not fall 1779 back this fall. 1780 1781 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 1782 1783 Changes affecting API 1784 1785 The types of the global variables 'timezone' and 'altzone' (if present) 1786 have been changed back to 'long'. This is required for 'timezone' 1787 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 1788 These variables were originally 'long' in the tz code, but were 1789 mistakenly changed to 'time_t' in 1987; nobody reported the 1790 incompatibility until now. The difference matters on x32, where 1791 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 1792 1793 Changes affecting the build procedure 1794 1795 Avoid long strings in leapseconds.awk to work around a mawk bug. 1796 (Thanks to Cyril Baurand.) 1797 1798 Changes affecting documentation and commentary 1799 1800 New file 'NEWS' that contains release notes like this one. 1801 1802 Paraguay's law does not specify DST transition time; 00:00 is customary. 1803 (Thanks to Waldemar Villamayor-Venialbo.) 1804 1805 Minor capitalization fixes. 1806 1807 Changes affecting version-control only 1808 1809 The experimental GitHub repository now contains annotated and 1810 signed tags for recent releases, e.g., '2013e' for Release 2013e. 1811 Releases are tagged starting with 2012e; earlier releases were 1812 done differently, and tags would either not have a simple name or 1813 not exactly match what was released. 1814 1815 'make set-timestamps' is now simpler and a bit more portable. 1816 1817 1818 Release 2013e - 2013-09-19 23:50:04 -0700 1819 1820 Changes affecting near-future timestamps 1821 1822 This year Fiji will start DST on October 27, not October 20. 1823 (Thanks to David Wheeler for the heads-up.) For now, guess that 1824 Fiji will continue to spring forward the Sunday before the fourth 1825 Monday in October. 1826 1827 Changes affecting current and future time zone abbreviations 1828 1829 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 1830 time zone abbreviations since 1932. (Thanks to George Ziegler, 1831 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 1832 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 1833 Asia/Makassar, and Asia/Pontianak. 1834 1835 Use ART (UT -03, standard time), rather than WARST (also -03, but 1836 daylight saving time) for San Luis, Argentina since 2009. 1837 1838 Changes affecting Godthb timestamps after 2037 if version mismatch 1839 1840 Allow POSIX-like TZ strings where the transition time's hour can 1841 range from -167 through 167, instead of the POSIX-required 0 1842 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 1843 new Fiji rules. This is a more-compact way to represent 1844 far-future timestamps for America/Godthab, America/Santiago, 1845 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1846 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1847 this change. (Derived from a suggestion by Arthur David Olson.) 1848 1849 Allow POSIX-like TZ strings where daylight saving time is in 1850 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1851 Argentina Summer Time all year. This supports a more-compact way 1852 to represent the 2013d data for America/Argentina/San_Luis. 1853 Because of the change for San Luis noted above this change does not 1854 affect the current data. (Thanks to Andrew Main (Zefram) for 1855 suggestions that improved this change.) 1856 1857 Where these two TZ changes take effect, there is a minor extension 1858 to the tz file format in that it allows new values for the 1859 embedded TZ-format string, and the tz file format version number 1860 has therefore been increased from 2 to 3 as a precaution. 1861 Version-2-based client code should continue to work as before for 1862 all timestamps before 2038. Existing version-2-based client code 1863 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1864 files, and typically works in practice even for timestamps after 1865 2037; the only known exception is America/Godthab. 1866 1867 Changes affecting timestamps before 1970 1868 1869 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1870 some errors before 1947. 1871 1872 Some zones have been turned into links, when they differ from existing 1873 zones only in older data entries that were likely invented or that 1874 differ only in LMT or transitions from LMT. These changes affect 1875 only timestamps before 1943. The affected zones are: 1876 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1877 America/Grenada, America/Guadeloupe, America/Marigot, 1878 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1879 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1880 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1881 confirming that the old Europe/Vaduz zone was wrong and the new 1882 link is better for WWII-era times.) 1883 1884 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1885 America/Cayman, America/Jamaica and America/Grand_Turk timestamps 1886 from 1890 to 1912. 1887 1888 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1889 This affects Europe/Zurich timestamps from 1853 to 1894. (Thanks 1890 to Alois Treindl). 1891 1892 Change the date of the circa-1850 Zurich transition from 1849-09-12 1893 to 1853-07-16, overriding Shanks with data from Messerli about 1894 postal and telegraph time in Switzerland. 1895 1896 Changes affecting time zone abbreviations before 1970 1897 1898 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1899 as Jakarta was called Batavia back then. 1900 1901 Changes affecting API 1902 1903 The 'zic' command now outputs a dummy transition when far-future 1904 data can't be summarized using a TZ string, and uses a 402-year 1905 window rather than a 400-year window. For the current data, this 1906 affects only the Asia/Tehran file. It does not affect any of the 1907 timestamps that this file represents, so zdump outputs the same 1908 information as before. (Thanks to Andrew Main (Zefram).) 1909 1910 The 'date' command has a new '-r' option, which lets you specify 1911 the integer time to display, a la FreeBSD. 1912 1913 The 'tzselect' command has two new options '-c' and '-n', which lets you 1914 select a zone based on latitude and longitude. 1915 1916 The 'zic' command's '-v' option now warns about constructs that 1917 require the new version-3 binary file format. (Thanks to Arthur 1918 David Olson for the suggestion.) 1919 1920 Support for floating-point time_t has been removed. 1921 It was always dicey, and POSIX no longer requires it. 1922 (Thanks to Eric Blake for suggesting to the POSIX committee to 1923 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1924 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1925 bugs and elucidating some of the corners of the old floating-point 1926 implementation.) 1927 1928 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1929 changed back to the old practice of using 'long' to represent UT 1930 offsets. This had been inadvertently and mistakenly changed to 1931 'int_fast32_t'. (Thanks to Christos Zoulas.) 1932 1933 The code avoids undefined behavior on integer overflow in some 1934 more places, including gmtime, localtime, mktime and zdump. 1935 1936 Changes affecting the zdump utility 1937 1938 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1939 "UTC" does not make sense for timestamps that predate the introduction 1940 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1941 for clarifying UT vs UTC.) 1942 1943 Data changes affecting behavior of tzselect and similar programs 1944 1945 Country code BQ is now called the more-common name "Caribbean Netherlands" 1946 rather than the more-official "Bonaire, St Eustatius & Saba". 1947 1948 Remove from zone.tab the names America/Montreal, America/Shiprock, 1949 and Antarctica/South_Pole, as they are equivalent to existing 1950 same-country-code zones for post-1970 timestamps. The data entries for 1951 these names are unchanged, so the names continue to work as before. 1952 1953 Changes affecting code internals 1954 1955 zic -c now runs way faster on 64-bit hosts when given large numbers. 1956 1957 zic now uses vfprintf to avoid allocating and freeing some memory. 1958 1959 tzselect now computes the list of continents from the data, 1960 rather than have it hard-coded. 1961 1962 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1963 1964 Changes affecting the build procedure 1965 1966 The 'leapseconds' file is now generated automatically from a 1967 new file 'leap-seconds.list', which is a copy of 1968 <ftp://time.nist.gov/pub/leap-seconds.list>. 1969 A new source file 'leapseconds.awk' implements this. 1970 The goal is simplification of the future maintenance of 'leapseconds'. 1971 1972 When building the 'posix' or 'right' subdirectories, if the 1973 subdirectory would be a copy of the default subdirectory, it is 1974 now made a symbolic link if that is supported. This saves about 1975 2 MB of file system space. 1976 1977 The links America/Shiprock and Antarctica/South_Pole have been 1978 moved to the 'backward' file. This affects only nondefault builds 1979 that omit 'backward'. 1980 1981 Changes affecting version-control only 1982 1983 .gitignore now ignores 'date'. 1984 1985 Changes affecting documentation and commentary 1986 1987 Changes to the 'tzfile' man page 1988 1989 It now mentions that the binary file format may be extended in 1990 future versions by appending data. 1991 1992 It now refers to the 'zdump' and 'zic' man pages. 1993 1994 Changes to the 'zic' man page 1995 1996 It lists conditions that elicit a warning with '-v'. 1997 1998 It says that the behavior is unspecified when duplicate names 1999 are given, or if the source of one link is the target of another. 2000 2001 Its examples are updated to match the latest data. 2002 2003 The definition of white space has been clarified slightly. 2004 (Thanks to Michael Deckers.) 2005 2006 Changes to the 'Theory' file 2007 2008 There is a new section about the accuracy of the tz database, 2009 describing the many ways that errors can creep in, and 2010 explaining why so many of the pre-1970 timestamps are wrong or 2011 misleading (thanks to Steve Allen, Lester Caine, and Garrett 2012 Wollman for discussions that contributed to this). 2013 2014 The 'Theory' file describes LMT better (this follows a 2015 suggestion by Guy Harris). 2016 2017 It refers to the 2013 edition of POSIX rather than the 2004 edition. 2018 2019 It's mentioned that excluding 'backward' should not affect the 2020 other data, and it suggests at least one zone.tab name per 2021 inhabited country (thanks to Stephen Colebourne). 2022 2023 Some longstanding restrictions on names are documented, e.g., 2024 'America/New_York' precludes 'America/New_York/Bronx'. 2025 2026 It gives more reasons for the 1970 cutoff. 2027 2028 It now mentions which time_t variants are supported, such as 2029 signed integer time_t. (Thanks to Paul Goyette for reporting 2030 typos in an experimental version of this change.) 2031 2032 (Thanks to Philip Newton for correcting typos in these changes.) 2033 2034 Documentation and commentary is more careful to distinguish UT in 2035 general from UTC in particular. (Thanks to Steve Allen.) 2036 2037 Add a better source for the Zurich 1894 transition. 2038 (Thanks to Pierre-Yves Berger.) 2039 2040 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 2041 2042 2043 Release 2013d - 2013-07-05 07:38:01 -0700 2044 2045 Changes affecting future timestamps: 2046 2047 Morocco's midsummer transitions this year are July 7 and August 10, 2048 not July 9 and August 8. (Thanks to Andrew Paprocki.) 2049 2050 Israel now falls back on the last Sunday of October. 2051 (Thanks to Ephraim Silverberg.) 2052 2053 Changes affecting past timestamps: 2054 2055 Specify Jerusalem's location more precisely; this changes the pre-1880 2056 times by 2 s. 2057 2058 Changing affecting metadata only: 2059 2060 Fix typos in the entries for country codes BQ and SX. 2061 2062 Changes affecting code: 2063 2064 Rework the code to fix a bug with handling Australia/Macquarie on 2065 32-bit hosts (thanks to Arthur David Olson). 2066 2067 Port to platforms like NetBSD, where time_t can be wider than long. 2068 2069 Add support for testing time_t types other than the system's. 2070 Run 'make check_time_t_alternatives' to try this out. 2071 Currently, the tests fail for unsigned time_t; 2072 this should get fixed at some point. 2073 2074 Changes affecting documentation and commentary: 2075 2076 Deemphasize the significance of national borders. 2077 2078 Update the zdump man page. 2079 2080 Remove obsolete NOID comment (thanks to Denis Excoffier). 2081 2082 Update several URLs and comments in the web pages. 2083 2084 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 2085 2086 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 2087 2088 2089 Release 2013c - 2013-04-19 16:17:40 -0700 2090 2091 Changes affecting current and future timestamps: 2092 2093 Palestine observed DST starting March 29, 2013. (Thanks to 2094 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 2095 with the predicted rules being the last Thursday in March at 24:00 2096 to the first Friday on or after September 21 at 01:00. 2097 2098 Assume that the recent change to Paraguay's DST rules is permanent, 2099 by moving the end of DST to the 4th Sunday in March every year. 2100 (Thanks to Carlos Ral Perasso.) 2101 2102 Changes affecting past timestamps: 2103 2104 Fix some historical data for Palestine to agree with that of 2105 timeanddate.com, as follows: 2106 2107 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 2108 00:00 Apr 1. 2109 2110 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 2111 02:00. 2112 2113 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 2114 2115 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 2116 2117 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 2118 2119 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 2120 2121 Fix times of habitation for Macquarie to agree with the Tasmania 2122 Parks & Wildlife Service history, which indicates that permanent 2123 habitation was 1899-1919 and 1948 on. 2124 2125 Changing affecting metadata only: 2126 2127 Macquarie Island is politically part of Australia, not Antarctica. 2128 (Thanks to Tobias Conradi.) 2129 2130 Sort Macquarie more-consistently with other parts of Australia. 2131 (Thanks to Tim Parenti.) 2132 2133 2134 Release 2013b - 2013-03-10 22:33:40 -0700 2135 2136 Changes affecting current and future timestamps: 2137 2138 Haiti uses US daylight-saving rules this year, and presumably future years. 2139 This changes timestamps starting today. (Thanks to Steffen Thorsen.) 2140 2141 Paraguay will end DST on March 24 this year. 2142 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 2143 2144 Morocco does not observe DST during Ramadan; 2145 try to predict Ramadan in Morocco as best we can. 2146 (Thanks to Erik Homoet for the heads-up.) 2147 2148 Changes affecting commentary: 2149 2150 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 2151 Update URL for Solaris. Mention Internet RFC 6557. 2152 Update Internet RFCs 2445->5545, 2822->5322. 2153 Switch from FTP to HTTP for Internet RFCs. 2154 2155 2156 Release 2013a - 2013-02-27 09:20:35 -0800 2157 2158 Change affecting binary data format: 2159 2160 The zone offset at the end of version-2-format zone files is now 2161 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 2162 2163 Changes affecting current and future timestamps: 2164 2165 Chile's 2013 rules, and we guess rules for 2014 and later, will be 2166 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 2167 (Thanks to Steffen Thorsen and Robert Elz.) 2168 2169 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 2170 (Thanks to Tobias Conradi and Arthur David Olson.) 2171 2172 Many changes affect historical timestamps before 1940. 2173 These were deduced from: Milne J. Civil time. Geogr J. 1899 2174 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 2175 2176 Changes affecting the code: 2177 2178 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 2179 the data). (Thanks to Arthur David Olson.) 2180 2181 Fix localtime bug when time_t is unsigned and data files were generated 2182 by a signed time_t system. (Thanks to Doug Bailey for reporting and 2183 to Arthur David Olson for fixing.) 2184 2185 Allow the email address for bug reports to be set by the packager. 2186 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 2187 2188 Update HTML checking to be compatible with Ubuntu 12.10. 2189 2190 Check that files are a safe subset of ASCII. At some point we may 2191 relax this requirement to a safe subset of UTF-8. Without the 2192 check, some non-UTF-8 encodings were leaking into the distribution. 2193 2194 Commentary changes: 2195 2196 Restore a comment about copyright notices that was inadvertently deleted. 2197 (Thanks to Arthur David Olson.) 2198 2199 Improve the commentary about which districts observe what times 2200 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 2201 2202 Add web page links to tz.js. 2203 2204 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 2205 2206 2207 Release 2012j - 2012-11-12 18:34:49 -0800 2208 2209 Libya moved to CET this weekend, but with DST planned next year. 2210 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 2211 2212 Signatures now have the extension .asc, not .sign, as that's more 2213 standard. (Thanks to Phil Pennock.) 2214 2215 The output of 'zdump --version', and of 'zic --version', now 2216 uses a format that is more typical for --version. 2217 (Thanks to Joseph S. Myers.) 2218 2219 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 2220 now uses tz (a] iana.org rather than the old elsie address. 2221 2222 zic -v now complains about abbreviations that are less than 3 2223 or more than 6 characters, as per Posix. Formerly, it checked 2224 for abbreviations that were more than 3. 2225 2226 'make public' no longer puts its temporary directory under /tmp, 2227 and uses the just-built zic rather than the system zic. 2228 2229 Various fixes to documentation and commentary. 2230 2231 2232 Release 2012i - 2012-11-03 12:57:09 -0700 2233 2234 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 2235 2236 Linker flags can now be specified via LDFLAGS. 2237 AWK now defaults to 'awk', not 'nawk'. 2238 The shell in tzselect now defaults to /bin/bash, but this can 2239 be overridden by specifying KSHELL. 2240 The main web page now mentions the unofficial GitHub repository. 2241 (Thanks to Mike Frysinger.) 2242 2243 Tarball signatures can now be built by running 'make signatures'. 2244 There are also new makefile rules 'tarballs', 'check_public', and 2245 separate makefile rules for each tarball and signature file. 2246 A few makefile rules are now more portable to strict POSIX. 2247 2248 The main web page now lists the canonical IANA URL. 2249 2250 2251 Release 2012h - 2012-10-26 22:49:10 -0700 2252 2253 Bahia no longer has DST. (Thanks to Kelley Cook.) 2254 2255 Tocantins has DST. (Thanks to Rodrigo Severo.) 2256 2257 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 2258 2259 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 2260 2261 Web page updates. 2262 2263 More C modernization, except that at Arthur David Olson's suggestion 2264 the instances of 'register' were kept. 2265 2266 2267 Release 2012g - 2012-10-17 20:59:45 -0700 2268 2269 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 2270 2271 Palestine fall 2012. (Thanks to Steffen Thorsen.) 2272 2273 Assume C89. 2274 2275 To attack the version-number problem, this release ships the file 2276 'Makefile' (which contains the release number) in both the tzcode and 2277 the tzdata tarballs. The two Makefiles are identical, and should be 2278 identical in any matching pair of tarballs, so it shouldn't matter 2279 which order you extract the tarballs. Perhaps we can come up with a 2280 better version-number scheme at some point; this scheme does have the 2281 virtue of not adding more files. 2282 2283 2284 Release 2012f - 2012-09-12 23:17:03 -0700 2285 2286 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 2287 20 this year. (Thanks to Steffen Thorsen.) 2288 2289 2290 Release 2012e - 2012-08-02 20:44:55 -0700 2291 2292 * australasia (Pacific/Fakaofo): Tokelau is UT +13, not +14. 2293 (Thanks to Steffen Thorsen.) 2294 2295 * Use a single version number for both code and data. 2296 2297 * .gitignore: New file. 2298 2299 * Remove trailing white space. 2300 2301 2302 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 2303 2304 Changes for Morocco's timestamps, which take effect in a couple of 2305 hours, along with infrastructure changes to accommodate how the tz 2306 code and data are released on IANA. 2307 2308 2309 Release data2012c - 2012-03-27 12:17:25 -0400 2310 2311 africa 2312 Summer time changes for Morocco (to start late April 2012) 2313 2314 asia 2315 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 2316 2317 northamerica 2318 Haiti following US/Canada rules for 2012 (and we're assuming, 2319 for now anyway, for the future). 2320 2321 2322 Release 2012b - 2012-03-02 12:29:15 +0700 2323 2324 There is just one change to tzcode2012b (compared with 2012a): 2325 the Makefile that was accidentally included with 2012a has been 2326 replaced with the version that should have been there, which is 2327 identical with the previous version (from tzcode2011i). 2328 2329 There are just two changes in tzdata2012b compared with 2012a. 2330 2331 Most significantly, summer time in Cuba has been delayed 3 weeks 2332 (now starts April 1 rather than March 11). Since Mar 11 (the old start 2333 date, as listed in 2012a) is just a little over a week away, this 2334 change is urgent. 2335 2336 Less importantly, an excess tab in one of the changes in zone.tab 2337 in 2012a has been removed. 2338 2339 2340 Release 2012a - 2012-03-01 18:28:10 +0700 2341 2342 The changes in tzcode2012a (compared to the previous version, 2011i) 2343 are entirely to the README and tz-art.htm and tz-link.htm files, if 2344 none of those concern you, you can ignore the code update. The changes 2345 reflect the changed addresses for the mailing list and the code and 2346 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 2347 has been added to tz-link.htm). 2348 2349 In tzdata2012a (compared to the previous release, which was 2011n) 2350 the major changes are: 2351 Chile 2011/2012 and 2012/2013 summer time date adjustments. 2352 Falkland Islands onto permanent summer time (we're assuming for the 2353 foreseeable future, though 2012 is all we're fairly certain of.) 2354 Armenia has abolished Summer Time. 2355 Tokelau jumped the International Date Line back last December 2356 (just the same as their near neighbour, Samoa). 2357 America/Creston is a new zone for a small area of British Columbia 2358 There will be a leapsecond 2012-06-30 23:59:60 UTC. 2359 2360 Other minor changes are: 2361 Corrections to 1918 Canadian summer time end dates. 2362 Updated URL for UK time zone history (in comments) 2363 A few typos in Le Corre's list of free French place names (comments) 2364 2365 2366 Release data2011n - 2011-10-30 14:57:54 +0700 2367 2368 There are three changes of note - most urgently, Cuba (America/Havana) 2369 has extended summer time by two weeks, now to end on Nov 13, rather than 2370 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 2371 (Europe/Tiraspol) decided not to split from the rest of Moldova after 2372 all, and consequently that zone has been removed (again) and reinstated 2373 in the "backward" file as a link to Europe/Chisinau. And third, the 2374 end date for Fiji's summer time this summer was moved forward from the 2375 earlier planned Feb 26, to Jan 22. 2376 2377 Apart from that, Moldova (MD) returns to a single entry in zone.tab 2378 (and the incorrect syntax that was in the 2011m version of that file 2379 is so fixed - it would have been fixed in a different way had this 2380 change not happened - that's the "missing" sccs version id). 2381 2382 2383 Release data2011m - 2011-10-24 21:42:16 +0700 2384 2385 In particular, the typos in comments in the data (2011-11-17 should have 2386 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 2387 Tim Parenti noted) have been fixed, and the change for Ukraine has been 2388 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 2389 Tim Parenti, and also Denys Gavrysh) 2390 2391 In addition, I added Europe/Tiraspol to zone.tab. 2392 2393 This time, all the files have new version numbers... (including the files 2394 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 2395 version numbers there...) 2396 2397 2398 Release data2011l - 2011-10-10 11:15:43 +0700 2399 2400 There are just 2 changes that cause different generated tzdata files from 2401 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 2402 is included, but commented out. Compared with the diff I sent out last week, 2403 this version also includes attributions for the sources for the changes 2404 (in much the same format as ado used, but the html tags have not been 2405 checked, verified, or used in any way at all, so if there are errors there, 2406 please let me know.) 2407 2408 2409 Release data2011k - 2011-09-20 17:54:03 -0400 2410 2411 [not summarized] 2412 2413 2414 Release data2011j - 2011-09-12 09:22:49 -0400 2415 2416 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 2417 Tanzania); there are also two spelling corrections to comments in 2418 the australasia file (with thanks to Christos Zoulas). 2419 2420 2421 Release 2011i - 2011-08-29 05:56:32 -0400 2422 2423 [not summarized] 2424 2425 2426 Release data2011h - 2011-06-15 18:41:48 -0400 2427 2428 Russia and Curaao changes 2429 2430 2431 Release 2011g - 2011-04-25 09:07:22 -0400 2432 2433 update the rules for Egypt to reflect its abandonment of DST this year 2434 2435 2436 Release 2011f - 2011-04-06 17:14:53 -0400 2437 2438 [not summarized] 2439 2440 2441 Release 2011e - 2011-03-31 16:04:38 -0400 2442 2443 Morocco, Chile, and tz-link changes 2444 2445 2446 Release 2011d - 2011-03-14 09:18:01 -0400 2447 2448 changes that impact present-day timestamps in Cuba, Samoa, and Turkey 2449 2450 2451 Release 2011c - 2011-03-07 09:30:09 -0500 2452 2453 These do affect current timestamps in Chile and Annette Island, Canada. 2454 2455 2456 Release 2011b - 2011-02-07 08:44:50 -0500 2457 2458 [not summarized] 2459 2460 2461 Release 2011a - 2011-01-24 10:30:16 -0500 2462 2463 [not summarized] 2464 2465 2466 Release data2010o - 2010-11-01 09:18:23 -0400 2467 2468 change to the end of DST in Fiji in 2011 2469 2470 2471 Release 2010n - 2010-10-25 08:19:17 -0400 2472 2473 [not summarized] 2474 2475 2476 Release 2010m - 2010-09-27 09:24:48 -0400 2477 2478 Hong Kong, Vostok, and zic.c changes 2479 2480 2481 Release 2010l - 2010-08-16 06:57:25 -0400 2482 2483 [not summarized] 2484 2485 2486 Release 2010k - 2010-07-26 10:42:27 -0400 2487 2488 [not summarized] 2489 2490 2491 Release 2010j - 2010-05-10 09:07:48 -0400 2492 2493 changes for Baha de Banderas and for version naming 2494 2495 2496 Release data2010i - 2010-04-16 18:50:45 -0400 2497 2498 the end of DST in Morocco on 2010-08-08 2499 2500 2501 Release data2010h - 2010-04-05 09:58:56 -0400 2502 2503 [not summarized] 2504 2505 2506 Release data2010g - 2010-03-24 11:14:53 -0400 2507 2508 [not summarized] 2509 2510 2511 Release 2010f - 2010-03-22 09:45:46 -0400 2512 2513 [not summarized] 2514 2515 2516 Release data2010e - 2010-03-08 14:24:27 -0500 2517 2518 corrects the Dhaka bug found by Danvin Ruangchan 2519 2520 2521 Release data2010d - 2010-03-06 07:26:01 -0500 2522 2523 [not summarized] 2524 2525 2526 Release 2010c - 2010-03-01 09:20:58 -0500 2527 2528 changes including KRE's suggestion for earlier initialization of 2529 "goahead" and "goback" structure elements 2530 2531 2532 Release code2010a - 2010-02-16 10:40:04 -0500 2533 2534 [not summarized] 2535 2536 2537 Release data2010b - 2010-01-20 12:37:01 -0500 2538 2539 Mexico changes 2540 2541 2542 Release data2010a - 2010-01-18 08:30:04 -0500 2543 2544 changes to Dhaka 2545 2546 2547 Release data2009u - 2009-12-26 08:32:28 -0500 2548 2549 changes to DST in Bangladesh 2550 2551 2552 Release 2009t - 2009-12-21 13:24:27 -0500 2553 2554 [not summarized] 2555 2556 2557 Release data2009s - 2009-11-14 10:26:32 -0500 2558 2559 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 2560 2561 2562 Release 2009r - 2009-11-09 10:10:31 -0500 2563 2564 "antarctica" and "tz-link.htm" changes 2565 2566 2567 Release 2009q - 2009-11-02 09:12:40 -0500 2568 2569 with two corrections as reported by Eric Muller and Philip Newton 2570 2571 2572 Release data2009p - 2009-10-23 15:05:27 -0400 2573 2574 Argentina (including San Luis) changes (with the correction from 2575 Mariano Absatz) 2576 2577 2578 Release data2009o - 2009-10-14 16:49:38 -0400 2579 2580 Samoa (commentary only), Pakistan, and Bangladesh changes 2581 2582 2583 Release data2009n - 2009-09-22 15:13:38 -0400 2584 2585 added commentary for Argentina and a change to the end of DST in 2586 2009 in Pakistan 2587 2588 2589 Release data2009m - 2009-09-03 10:23:43 -0400 2590 2591 Samoa and Palestine changes 2592 2593 2594 Release data2009l - 2009-08-14 09:13:07 -0400 2595 2596 Samoa (comments only) and Egypt 2597 2598 2599 Release 2009k - 2009-07-20 09:46:08 -0400 2600 2601 [not summarized] 2602 2603 2604 Release data2009j - 2009-06-15 06:43:59 -0400 2605 2606 Bangladesh change (with a short turnaround since the DST change is 2607 impending) 2608 2609 2610 Release 2009i - 2009-06-08 09:21:22 -0400 2611 2612 updating for DST in Bangladesh this year 2613 2614 2615 Release 2009h - 2009-05-26 09:19:14 -0400 2616 2617 [not summarized] 2618 2619 2620 Release data2009g - 2009-04-20 16:34:07 -0400 2621 2622 Cairo 2623 2624 2625 Release data2009f - 2009-04-10 11:00:52 -0400 2626 2627 correct DST in Pakistan 2628 2629 2630 Release 2009e - 2009-04-06 09:08:11 -0400 2631 2632 [not summarized] 2633 2634 2635 Release 2009d - 2009-03-23 09:38:12 -0400 2636 2637 Morocco, Tunisia, Argentina, and American Astronomical Society changes 2638 2639 2640 Release data2009c - 2009-03-16 09:47:51 -0400 2641 2642 change to the start of Cuban DST 2643 2644 2645 Release 2009b - 2009-02-09 11:15:22 -0500 2646 2647 [not summarized] 2648 2649 2650 Release 2009a - 2009-01-21 10:09:39 -0500 2651 2652 [not summarized] 2653 2654 2655 Release data2008i - 2008-10-21 12:10:25 -0400 2656 2657 southamerica and zone.tab files, with Argentina DST rule changes and 2658 United States zone reordering and recommenting 2659 2660 2661 Release 2008h - 2008-10-13 07:33:56 -0400 2662 2663 [not summarized] 2664 2665 2666 Release 2008g - 2008-10-06 09:03:18 -0400 2667 2668 Fix a broken HTML anchor and update Brazil's DST transitions; 2669 there's also a slight reordering of information in tz-art.htm. 2670 2671 2672 Release data2008f - 2008-09-09 22:33:26 -0400 2673 2674 [not summarized] 2675 2676 2677 Release 2008e - 2008-07-28 14:11:17 -0400 2678 2679 changes by Arthur David Olson and Jesper Nrgaard Welen 2680 2681 2682 Release data2008d - 2008-07-07 09:51:38 -0400 2683 2684 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 2685 2686 2687 Release data2008c - 2008-05-19 17:48:03 -0400 2688 2689 Pakistan, Morocco, and Mongolia 2690 2691 2692 Release data2008b - 2008-03-24 08:30:59 -0400 2693 2694 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 2695 link provided 2696 2697 2698 Release 2008a - 2008-03-08 05:42:16 -0500 2699 2700 [not summarized] 2701 2702 2703 Release 2007k - 2007-12-31 10:25:22 -0500 2704 2705 most importantly, changes to the "southamerica" file based on 2706 Argentina's readoption of daylight saving time 2707 2708 2709 Release 2007j - 2007-12-03 09:51:01 -0500 2710 2711 1. eliminate the "P" (parameter) macro; 2712 2713 2. the "noncontroversial" changes circulated on the time zone 2714 mailing list (less the changes to "logwtmp.c"); 2715 2716 3. eliminate "too many transition" errors when "min" is used in time 2717 zone rules; 2718 2719 4. changes by Paul Eggert (including updated information for Venezuela). 2720 2721 2722 Release data2007i - 2007-10-30 10:28:11 -0400 2723 2724 changes for Cuba and Syria 2725 2726 2727 Release 2007h - 2007-10-01 10:05:51 -0400 2728 2729 changes by Paul Eggert, as well as an updated link to the ICU 2730 project in tz-link.htm 2731 2732 2733 Release 2007g - 2007-08-20 10:47:59 -0400 2734 2735 changes by Paul Eggert 2736 2737 The "leapseconds" file has been updated to incorporate the most 2738 recent International Earth Rotation and Reference Systems Service 2739 (IERS) bulletin. 2740 2741 There's an addition to tz-art.htm regarding the television show "Medium". 2742 2743 2744 Release 2007f - 2007-05-07 10:46:46 -0400 2745 2746 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 2747 Zealand) 2748 2749 changes to zic.c to allow hour values greater than 24 (along with 2750 Paul's improved time value overflow checking) 2751 2752 2753 Release 2007e - 2007-04-02 10:11:52 -0400 2754 2755 Syria and Honduras changes by Paul Eggert 2756 2757 zic.c variable renaming changes by Arthur David Olson 2758 2759 2760 Release 2007d - 2007-03-20 08:48:30 -0400 2761 2762 changes by Paul Eggert 2763 2764 the elimination of white space at the ends of lines 2765 2766 2767 Release 2007c - 2007-02-26 09:09:37 -0500 2768 2769 changes by Paul Eggert 2770 2771 2772 Release 2007b - 2007-02-12 09:34:20 -0500 2773 2774 Paul Eggert's proposed change to the quotation handling logic in zic.c. 2775 2776 changes to the commentary in "leapseconds" reflecting the IERS 2777 announcement that there is to be no positive leap second at the end 2778 of June 2007. 2779 2780 2781 Release 2007a - 2007-01-08 12:28:29 -0500 2782 2783 changes by Paul Eggert 2784 2785 Derick Rethan's Asmara change 2786 2787 Oscar van Vlijmen's Easter Island local mean time change 2788 2789 symbolic link changes 2790 2791 2792 Release 2006p - 2006-11-27 08:54:27 -0500 2793 2794 changes by Paul Eggert 2795 2796 2797 Release 2006o - 2006-11-06 09:18:07 -0500 2798 2799 changes by Paul Eggert 2800 2801 2802 Release 2006n - 2006-10-10 11:32:06 -0400 2803 2804 changes by Paul Eggert 2805 2806 2807 Release 2006m - 2006-10-02 15:32:35 -0400 2808 2809 changes for Uruguay, Palestine, and Egypt by Paul Eggert 2810 2811 (minimalist) changes to zic.8 to clarify "until" information 2812 2813 2814 Release data2006l - 2006-09-18 12:58:11 -0400 2815 2816 Paul's best-effort work on this coming weekend's Egypt time change 2817 2818 2819 Release 2006k - 2006-08-28 12:19:09 -0400 2820 2821 changes by Paul Eggert 2822 2823 2824 Release 2006j - 2006-08-21 09:56:32 -0400 2825 2826 changes by Paul Eggert 2827 2828 2829 Release code2006i - 2006-08-07 12:30:55 -0400 2830 2831 localtime.c fixes 2832 2833 Ken Pizzini's conversion script 2834 2835 2836 Release code2006h - 2006-07-24 09:19:37 -0400 2837 2838 adds public domain notices to four files 2839 2840 includes a fix for transition times being off by a second 2841 2842 adds a new recording to the "arts" file (information courtesy Colin Bowern) 2843 2844 2845 Release 2006g - 2006-05-08 17:18:09 -0400 2846 2847 northamerica changes by Paul Eggert 2848 2849 2850 Release 2006f - 2006-05-01 11:46:00 -0400 2851 2852 a missing version number problem is fixed (with thanks to Bradley 2853 White for catching the problem) 2854 2855 2856 Release 2006d - 2006-04-17 14:33:43 -0400 2857 2858 changes by Paul Eggert 2859 2860 added new items to tz-arts.htm that were found by Paul 2861 2862 2863 Release 2006c - 2006-04-03 10:09:32 -0400 2864 2865 two sets of data changes by Paul Eggert 2866 2867 a fencepost error fix in zic.c 2868 2869 changes to zic.c and the "europe" file to minimize differences 2870 between output produced by the old 32-bit zic and the new 64-bit 2871 version 2872 2873 2874 Release 2006b - 2006-02-20 10:08:18 -0500 2875 [tz32code2006b + tz64code2006b + tzdata2006b] 2876 2877 64-bit code 2878 2879 All SCCS IDs were bumped to "8.1" for this release. 2880 2881 2882 Release 2006a - 2006-01-30 08:59:31 -0500 2883 2884 changes by Paul Eggert (in particular, Indiana time zone moves) 2885 2886 an addition to the zic manual page to describe how special-case 2887 transitions are handled 2888 2889 2890 Release 2005r - 2005-12-27 09:27:13 -0500 2891 2892 Canadian changes by Paul Eggert 2893 2894 They also add "<pre>" directives to time zone data files and reflect 2895 changes to warning message logic in "zdump.c" (but with calls to 2896 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2897 2898 2899 Release 2005q - 2005-12-13 09:17:09 -0500 2900 2901 Nothing earth-shaking here: 2902 1. Electronic mail addresses have been removed. 2903 2. Casts of the return value of exit have been removed. 2904 3. Casts of the argument of is.* macros have been added. 2905 4. Indentation in one section of zic.c has been fixed. 2906 5. References to dead URLs in the data files have been dealt with. 2907 2908 2909 Release 2005p - 2005-12-05 10:30:53 -0500 2910 2911 "systemv", "tz-link.htm", and "zdump.c" changes 2912 (less the casts of arguments to the is* macros) 2913 2914 2915 Release 2005o - 2005-11-28 10:55:26 -0500 2916 2917 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2918 2919 zdump.c lint fixes by Arthur David Olson 2920 2921 2922 Release 2005n - 2005-10-03 09:44:09 -0400 2923 2924 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2925 et al. changes) 2926 2927 2928 Release 2005m - 2005-08-29 12:15:40 -0400 2929 2930 changes by Paul Eggert (with a small tweak to the tz-art change) 2931 2932 a declaration of an unused variable has been removed from zdump.c 2933 2934 2935 Release 2005l - 2005-08-22 12:06:39 -0400 2936 2937 changes by Paul Eggert 2938 2939 overflow/underflow checks by Arthur David Olson, minus changes to 2940 the "Theory" file about the pending addition of 64-bit data (I grow 2941 less confident of the changes being accepted with each passing day, 2942 and the changes no longer increase the data files nine-fold--there's 2943 less than a doubling in size by my local Sun's reckoning) 2944 2945 2946 Release 2005k - 2005-07-14 14:14:24 -0400 2947 2948 The "leapseconds" file has been edited to reflect the recently 2949 announced leap second at the end of 2005. 2950 2951 I've also deleted electronic mail addresses from the files as an 2952 anti-spam measure. 2953 2954 2955 Release 2005j - 2005-06-13 14:34:13 -0400 2956 2957 These reflect changes to limit the length of time zone abbreviations 2958 and the characters used in those abbreviations. 2959 2960 There are also changes to handle POSIX-style "quoted" time zone 2961 environment variables. 2962 2963 The changes were circulated on the time zone mailing list; the only 2964 change since then was the removal of a couple of minimum-length of 2965 abbreviation checks. 2966 2967 2968 Release data2005i - 2005-04-21 15:04:16 -0400 2969 2970 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2971 2972 2973 Release 2005h - 2005-04-04 11:24:47 -0400 2974 2975 changes by Paul Eggert 2976 2977 minor changes to Makefile and zdump.c to produce more useful output 2978 when doing a "make typecheck" 2979 2980 2981 Release 2005g - 2005-03-14 10:11:21 -0500 2982 2983 changes by Paul Eggert (a change to current DST rules in Uruguay and 2984 an update to a link to time zone software) 2985 2986 2987 Release 2005f - 2005-03-01 08:45:32 -0500 2988 2989 data and documentation changes by Paul Eggert 2990 2991 2992 Release 2005e - 2005-02-10 15:59:44 -0500 2993 2994 [not summarized] 2995 2996 2997 Release code2005d - 2005-01-31 09:21:47 -0500 2998 2999 make zic complain about links to links if the -v flag is used 3000 3001 have "make public" do more code checking 3002 3003 add an include to "localtime.c" for the benefit of gcc systems 3004 3005 3006 Release 2005c - 2005-01-17 18:36:29 -0500 3007 3008 get better results when mktime runs on a system where time_t is double 3009 3010 changes to the data files (most importantly to Paraguay) 3011 3012 3013 Release 2005b - 2005-01-10 09:19:54 -0500 3014 3015 Get localtime and gmtime working on systems with exotic time_t types. 3016 3017 Update the leap second commentary in the "leapseconds" file. 3018 3019 3020 Release 2005a - 2005-01-01 13:13:44 -0500 3021 3022 [not summarized] 3023 3024 3025 Release code2004i - 2004-12-14 13:42:58 -0500 3026 3027 Deal with systems where time_t is unsigned. 3028 3029 3030 Release code2004h - 2004-12-07 11:40:18 -0500 3031 3032 64-bit-time_t changes 3033 3034 3035 Release 2004g - 2004-11-02 09:06:01 -0500 3036 3037 update to Cuba (taking effect this weekend) 3038 3039 other changes by Paul Eggert 3040 3041 correction of the spelling of Oslo 3042 3043 changed versions of difftime.c and private.h 3044 3045 3046 Release code2004f - 2004-10-21 10:25:22 -0400 3047 3048 Cope with wide-ranging tm_year values. 3049 3050 3051 Release 2004e - 2004-10-11 14:47:21 -0400 3052 3053 Brazil/Argentina/Israel changes by Paul Eggert 3054 3055 changes to tz-link.htm by Paul 3056 3057 one small fix to Makefile 3058 3059 3060 Release 2004d - 2004-09-22 08:27:29 -0400 3061 3062 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 3063 3064 3065 Release 2004c - 2004-08-11 12:06:26 -0400 3066 3067 asctime-related changes 3068 3069 (variants of) some of the documentation changes suggested by Paul Eggert 3070 3071 3072 Release 2004b - 2004-07-19 14:33:35 -0400 3073 3074 data changes by Paul Eggert - most importantly, updates for Argentina 3075 3076 3077 Release 2004a - 2004-05-27 12:00:47 -0400 3078 3079 changes by Paul Eggert 3080 3081 Handle DST transitions that occur at the end of a month in some 3082 years but at the start of the following month in other years. 3083 3084 Add a copy of the correspondence that's the basis for claims about 3085 DST in the Navajo Nation. 3086 3087 3088 Release 2003e - 2003-12-15 09:36:47 -0500 3089 3090 changes by Arthur David Olson (primarily code changes) 3091 3092 changes by Paul Eggert (primarily data changes) 3093 3094 minor changes to "Makefile" and "northamerica" (in the latter case, 3095 optimization of the "Toronto" rules) 3096 3097 3098 Release 2003d - 2003-10-06 09:34:44 -0400 3099 3100 changes by Paul Eggert 3101 3102 3103 Release 2003c - 2003-09-16 10:47:05 -0400 3104 3105 Fix bad returns in zic.c's inleap function. 3106 Thanks to Bradley White for catching the problem! 3107 3108 3109 Release 2003b - 2003-09-16 07:13:44 -0400 3110 3111 Add a "--version" option (and documentation) to the zic and zdump commands. 3112 3113 changes to overflow/underflow checking in zic 3114 3115 a localtime typo fix. 3116 3117 Update the leapseconds and tz-art.htm files. 3118 3119 3120 Release 2003a - 2003-03-24 09:30:54 -0500 3121 3122 changes by Paul Eggert 3123 3124 a few additions and modifications to the tz-art.htm file 3125 3126 3127 Release 2002d - 2002-10-15 13:12:42 -0400 3128 3129 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 3130 3131 There's also a new time zone quote in "tz-art.htm". 3132 3133 3134 Release 2002c - 2002-04-04 11:55:20 -0500 3135 3136 changes by Paul Eggert 3137 3138 Change zic.c to avoid creating symlinks to files that don't exist. 3139 3140 3141 Release 2002b - 2002-01-28 12:56:03 -0500 3142 3143 [These change notes are for Release 2002a, which was corrupted. 3144 2002b was a corrected version of 2002a.] 3145 3146 changes by Paul Eggert 3147 3148 Update the "leapseconds" file to note that there'll be no leap 3149 second at the end of June, 2002. 3150 3151 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 3152 3153 Change to "difftime.c" to avoid sizeof problems. 3154 3155 3156 Release 2001d - 2001-10-09 13:31:32 -0400 3157 3158 changes by Paul Eggert 3159 3160 3161 Release 2001c - 2001-06-05 13:59:55 -0400 3162 3163 changes by Paul Eggert and Andrew Brown 3164 3165 3166 Release 2001b - 2001-04-05 16:44:38 -0400 3167 3168 changes by Paul Eggert (modulo jnorgard's typo fix) 3169 3170 tz-art.htm has been HTMLified. 3171 3172 3173 Release 2001a - 2001-03-13 12:57:44 -0500 3174 3175 changes by Paul Eggert 3176 3177 An addition to the "leapseconds" file: comments with the text of the 3178 latest IERS leap second notice. 3179 3180 Trailing white space has been removed from data file lines, and 3181 repeated spaces in "Rule Jordan" lines in the "asia" file have been 3182 converted to tabs. 3183 3184 3185 Release 2000h - 2000-12-14 15:33:38 -0500 3186 3187 changes by Paul Eggert 3188 3189 one typo fix in the "art" file 3190 3191 With providence, this is the last update of the millennium. 3192 3193 3194 Release 2000g - 2000-10-10 11:35:22 -0400 3195 3196 changes by Paul Eggert 3197 3198 correction of John Mackin's name submitted by Robert Elz 3199 3200 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 3201 Emmy Awards broadcast. 3202 3203 3204 Release 2000f - 2000-08-10 09:31:58 -0400 3205 3206 changes by Paul Eggert 3207 3208 Added information in "tz-art.htm" on a Seinfeld reference to DST. 3209 3210 Error checking and messages in the "yearistype" script have been 3211 improved. 3212 3213 3214 Release 2000e - 2000-07-31 09:27:54 -0400 3215 3216 data changes by Paul Eggert 3217 3218 a change to the default value of the defined constant HAVE_STRERROR 3219 3220 the addition of a Dave Barry quote on DST to the tz-arts file 3221 3222 3223 Release 2000d - 2000-04-20 15:43:04 -0400 3224 3225 changes to the documentation and code of strftime for C99 conformance 3226 3227 a bug fix for date.c 3228 3229 These are based on (though modified from) changes by Paul Eggert. 3230 3231 3232 Release 2000c - 2000-03-04 10:31:43 -0500 3233 3234 changes by Paul Eggert 3235 3236 3237 Release 2000b - 2000-02-21 12:16:29 -0500 3238 3239 changes by Paul Eggert and Joseph Myers 3240 3241 modest tweaks to the tz-art.htm and tz-link.htm files 3242 3243 3244 Release 2000a - 2000-01-18 09:21:26 -0500 3245 3246 changes by Paul Eggert 3247 3248 The two hypertext documents have also been renamed. 3249 3250 3251 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 3252 3253 Paul Eggert's changes 3254 3255 additions to the "zic" manual page and the "Arts.htm" file 3256 3257 3258 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 3259 3260 [not summarized] 3261 3262 3263 Release data1999h - 1999-10-07 03:50:29 -0400 3264 3265 changes by Paul Eggert to "europe" (most importantly, fixing 3266 Lithuania and Estonia) 3267 3268 3269 Release 1999g - 1999-09-28 11:06:18 -0400 3270 3271 data changes by Paul Eggert (most importantly, the change for 3272 Lebanon that buys correctness for this coming Sunday) 3273 3274 The "code" file contains changes to "Makefile" and "checktab.awk" to 3275 allow better checking of time zone files before they are published. 3276 3277 3278 Release 1999f - 1999-09-23 09:48:14 -0400 3279 3280 changes by Arthur David Olson and Paul Eggert 3281 3282 3283 Release 1999e - 1999-08-17 15:20:54 -0400 3284 3285 changes circulated by Paul Eggert, although the change to handling 3286 of DST-specifying time zone names has been commented out for now 3287 (search for "XXX" in "localtime.c" for details). These files also 3288 do not make any changes to the start of DST in Brazil. 3289 3290 In addition to Paul's changes, there are updates to "Arts.htm" and 3291 cleanups of URLs. 3292 3293 3294 Release 1999d - 1999-03-30 11:31:07 -0500 3295 3296 changes by Paul Eggert 3297 3298 The Makefile's "make public" rule has also been changed to do a test 3299 compile of each individual time zone data file (which should help 3300 avoid problems such as the one we had with Nicosia). 3301 3302 3303 Release 1999c - 1999-03-25 09:47:47 -0500 3304 3305 changes by Paul Eggert, most importantly the change for Chile. 3306 3307 3308 Release 1999b - 1999-02-01 17:51:44 -0500 3309 3310 changes by Paul Eggert 3311 3312 code changes (suggested by Mani Varadarajan, mani at be.com) for 3313 correct handling of symbolic links when building using a relative directory 3314 3315 code changes to generate correct messages for failed links 3316 3317 updates to the URLs in Arts.htm 3318 3319 3320 Release 1999a - 1999-01-19 16:20:29 -0500 3321 3322 error message internationalizations and corrections in zic.c and 3323 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 3324 to whom thanks!) 3325 3326 3327 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 3328 3329 changes for Brazil, Chile, and Germany 3330 3331 support for use of "24:00" in the input files for the time zone compiler 3332 3333 3334 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 3335 3336 changes by Paul Eggert 3337 3338 correction to a define in the "private.h" file 3339 3340 3341 Release data1998g - 1998-08-11 03:28:35 -0000 3342 [tzdata1998g.tar.gz is missing!] 3343 3344 Lithuanian change provided by mgedmin at pub.osf.it 3345 3346 Move creation of the GMT link with Etc/GMT to "etcetera" (from 3347 "backward") to ensure that the GMT file is created even where folks 3348 don't want the "backward" links (as suggested by Paul Eggert). 3349 3350 3351 Release data1998f - 1998-07-20 13:50:00 -0000 3352 [tzdata1998f.tar.gz is missing!] 3353 3354 Update the "leapseconds" file to include the newly-announced 3355 insertion at the end of 1998. 3356 3357 3358 Release code1998f - 1998-06-01 10:18:31 -0400 3359 3360 addition to localtime.c by Guy Harris 3361 3362 3363 Release 1998e - 1998-05-28 09:56:26 -0400 3364 3365 The Makefile is changed to produce zoneinfo-posix rather than 3366 zoneinfo/posix, and to produce zoneinfo-leaps rather than 3367 zoneinfo/right. 3368 3369 data changes by Paul Eggert 3370 3371 changes from Guy Harris to provide asctime_r and ctime_r 3372 3373 A usno1998 file (substantially identical to usno1997) has been added. 3374 3375 3376 Release 1998d - 1998-05-14 11:58:34 -0400 3377 3378 changes to comments (in particular, elimination of references to CIA maps). 3379 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 3380 where changes occur. 3381 3382 3383 Release 1998c - 1998-02-28 12:32:26 -0500 3384 3385 changes by Paul Eggert (save the "French correction," on which I'll 3386 wait for the dust to settle) 3387 3388 symlink changes 3389 3390 changes and additions to Arts.htm 3391 3392 3393 Release 1998b - 1998-01-17 14:31:51 -0500 3394 3395 URL cleanups and additions 3396 3397 3398 Release 1998a - 1998-01-13 12:37:35 -0500 3399 3400 changes by Paul Eggert 3401 3402 3403 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 3404 3405 changes by Paul Eggert, with minor modifications from Arthur David 3406 Olson to make the files more browser friendly 3407 3408 3409 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 3410 3411 minor changes to put "TZif" at the start of each time zone information file 3412 3413 a rule has also been added to the Makefile so you can 3414 make zones 3415 to just recompile the zone information files (rather than doing a 3416 full "make install" with its other effects). 3417 3418 3419 Release data1997i - 1997-10-07 08:45:38 -0400 3420 3421 changes to Africa by Paul Eggert 3422 3423 3424 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 3425 3426 corrections for Uruguay (and other locations) 3427 3428 Arthur David Olson's simple-minded fix allowing mktime to both 3429 correctly handle leap seconds and correctly handle tm_sec values 3430 upon which arithmetic has been performed. 3431 3432 3433 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 3434 3435 Paul Eggert's updates 3436 3437 a small change to a function prototype; 3438 3439 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 3440 include information on Around the World in Eighty Days. 3441 3442 3443 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 3444 3445 fixes to zic's error handling 3446 3447 changes inspired by the item circulated on Slovenia 3448 3449 The description of Web resources has been HTMLified for browsing 3450 convenience. 3451 3452 A new piece of tz-related music has been added to the "Music" file. 3453 3454 3455 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 3456 3457 Paul Eggert's latest suggestions 3458 3459 3460 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 3461 3462 changes to "zic.c" to correct performance of the "-s" option 3463 3464 a new file "usno1997" 3465 3466 3467 Release data1997c - 1997-03-04 09:58:18 -0500 3468 3469 changes in Israel 3470 3471 3472 Release 1997b - 1997-02-27 18:34:19 -0500 3473 3474 The data file incorporates the 1997 leap second. 3475 3476 The code file incorporates Arthur David Olson's take on the 3477 zic/multiprocessor/directory-creation situation. 3478 3479 3480 Release 1997a - 1997-01-21 09:11:10 -0500 3481 3482 Paul Eggert's Antarctica (and other changes) 3483 3484 Arthur David Olson finessed the "getopt" issue by checking against 3485 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 3486 is returned while SunOS 5.5's manual says EOF is returned). 3487 3488 3489 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 3490 3491 Paul Eggert's latest changes 3492 3493 3494 Release code1996n - 1996-12-16 09:42:02 -0500 3495 3496 link snapping fix from Bruce Evans (via Garrett Wollman) 3497 3498 3499 Release data1996m - 1996-11-24 02:37:34 -0000 3500 [tzdata1996m.tar.gz is missing!] 3501 3502 Paul Eggert's batch of changes 3503 3504 3505 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 3506 3507 No functional changes here; the files have simply been changed to 3508 make more use of ISO style dates in comments. The names of the above 3509 files now include the year in full. 3510 3511 3512 Release code96l - 1996-09-08 17:12:20 -0400 3513 3514 tzcode96k was missing a couple of pieces. 3515 3516 3517 Release 96k - 1996-09-08 16:06:22 -0400 3518 3519 the latest round of changes from Paul Eggert 3520 3521 the recent Year 2000 material 3522 3523 3524 Release code96j - 1996-07-30 13:18:53 -0400 3525 3526 Set sp->typecnt as suggested by Timothy Patrick Murphy. 3527 3528 3529 Release code96i - 1996-07-27 20:11:35 -0400 3530 3531 Paul's suggested patch for strftime %V week numbers 3532 3533 3534 Release data96i - 1996-07-01 18:13:04 -0400 3535 3536 "northamerica" and "europe" changes by Paul Eggert 3537 3538 3539 Release code96h - 1996-06-05 08:02:21 -0400 3540 3541 fix for handling transitions specified in Universal Time 3542 3543 Some "public domain" notices have also been added. 3544 3545 3546 Release code96g - 1996-05-16 14:00:26 -0400 3547 3548 fix for the simultaneous-DST-and-zone-change challenge 3549 3550 3551 Release data96h - 1996-05-09 17:40:51 -0400 3552 3553 changes by Paul Eggert 3554 3555 3556 Release code96f-data96g - 1996-05-03 03:09:59 -0000 3557 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 3558 3559 The changes get us some of the way to fixing the problems noted in Paul 3560 Eggert's letter yesterday (in addition to a few others). The approach 3561 has been to make zic a bit smarter about figuring out what time zone 3562 abbreviations apply just after the time specified in the "UNTIL" part 3563 of a zone line. Putting the smarts in zic means avoiding having 3564 transition times show up in both "Zone" lines and "Rule" lines, which 3565 in turn avoids multiple transition time entries in time zone files. 3566 (This also makes the zic input files such as "europe" a bit shorter and 3567 should ease maintenance.) 3568 3569 3570 Release data96f - 1996-04-19 19:20:03 -0000 3571 [tzdata96f.tar.gz is missing!] 3572 3573 The only changes are to the "northamerica" file; the time zone 3574 abbreviation for Denver is corrected to MST (and MDT), and the 3575 comments for Mexico have been updated. 3576 3577 3578 Release data96e - 1996-03-19 17:37:26 -0500 3579 3580 Proposals by Paul Eggert, in particular the Portugal change that 3581 comes into play at the end of this month. 3582 3583 3584 Release data96d - 1996-03-18 20:49:39 -0500 3585 3586 [not summarized] 3587 3588 3589 Release code96e - 1996-02-29 15:43:27 -0000 3590 [tzcode96e.tar.gz is missing!] 3591 3592 internationalization changes and the fix to the documentation for strftime 3593 3594 3595 Release code96d-data96c - 1996-02-12 11:05:27 -0500 3596 3597 The "code" file simply updates Bob Kridle's electronic address. 3598 3599 The "data" file updates rules for Mexico. 3600 3601 3602 Release data96b - 1996-01-27 15:44:42 -0500 3603 3604 Kiribati change 3605 3606 3607 Release code96c - 1996-01-16 16:58:15 -0500 3608 3609 leap-year streamlining and binary-search changes 3610 3611 fix to newctime.3 3612 3613 3614 Release code96b - 1996-01-10 20:42:39 -0500 3615 3616 fixes and enhancements from Paul Eggert, including code that 3617 emulates the behavior of recent versions of the SunOS "date" 3618 command. 3619 3620 3621 Release 96a - 1996-01-06 09:08:24 -0500 3622 3623 Israel updates 3624 3625 fixes to strftime.c for correct ISO 8601 week number generation, 3626 plus support for two new formats ('G' and 'g') to give ISO 8601 year 3627 numbers (which are not necessarily the same as calendar year numbers) 3628 3629 3630 Release code95i-data95m - 1995-12-21 12:46:47 -0500 3631 3632 The latest revisions from Paul Eggert are included, the usno1995 3633 file has been updated, and a new file ("WWW") covering useful URLs 3634 has been added. 3635 3636 3637 Release code95h-data95l - 1995-12-19 18:10:12 -0500 3638 3639 A simplification of a macro definition, a change to data for Sudan, 3640 and (for last minute shoppers) notes in the "Music" file on the CD 3641 "Old Man Time". 3642 3643 3644 Release code95g-data95k - 1995-10-30 10:32:47 -0500 3645 3646 (slightly reformatted) 8-bit-clean proposed patch 3647 3648 minor patch: US/Eastern -> America/New_York 3649 3650 snapshot of the USNO's latest data ("usno1995") 3651 3652 some other minor cleanups 3653 3654 3655 Release code95f-data95j - 1995-10-28 21:01:34 -0000 3656 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 3657 3658 European cleanups 3659 3660 support for 64-bit time_t's 3661 3662 optimization in localtime.c 3663 3664 3665 Release code95e - 1995-10-13 13:23:57 -0400 3666 3667 the mktime change to scan from future to past when trying to find time zone 3668 offsets 3669 3670 3671 Release data95i - 1995-09-26 10:43:26 -0400 3672 3673 For Canada/Central, guess that the Sun customer's "one week too 3674 early" was just a approximation, and the true error is one month 3675 too early. This is consistent with the rest of Canada. 3676 3677 3678 Release data95h - 1995-09-21 11:26:48 -0400 3679 3680 latest changes from Paul Eggert 3681 3682 3683 Release code95d - 1995-09-14 11:14:45 -0400 3684 3685 the addition of a "Music" file, which documents four recorded 3686 versions of the tune "Save That Time". 3687 3688 3689 Release data95g - 1995-09-01 17:21:36 -0400 3690 3691 "yearistype" correction 3692 3693 3694 Release data95f - 1995-08-28 20:46:56 -0400 3695 3696 Paul Eggert's change to the australasia file 3697 3698 3699 Release data95e - 1995-07-08 18:02:34 -0400 3700 3701 The only change is a leap second at the end of this year. 3702 Thanks to Bradley White for forwarding news on the leap second. 3703 3704 3705 Release data95d - 1995-07-03 13:26:22 -0400 3706 3707 Paul Eggert's changes 3708 3709 3710 Release data95c - 1995-07-02 19:19:28 -0400 3711 3712 changes to "asia", "backward", "europe", and "southamerica" 3713 (read: northamericacentrics need not apply) 3714 3715 3716 Release code95c - 1995-03-13 14:00:46 -0500 3717 3718 one-line fix for sign extension problems in detzcode 3719 3720 3721 Release 95b - 1995-03-04 11:22:38 -0500 3722 3723 Minor changes in both: 3724 3725 The "code" file contains a workaround for the lack of "unistd.h" in 3726 Microsoft C++ version 7. 3727 3728 The "data" file contains a fixed "Link" for America/Shiprock. 3729 3730 3731 Release 94h - 1994-12-10 12:51:14 -0500 3732 3733 The files: 3734 3735 * incorporate the changes to "zdump" and "date" to make changes to 3736 the "TZ" environment variable permanent; 3737 3738 * incorporate the table changes by Paul Eggert; 3739 3740 * include (and document) support for universal time specifications in 3741 data files - but do not (yet) include use of this feature in the 3742 data files. 3743 3744 Think of this as "TZ Classic" - the software has been set up not to break if 3745 universal time shows up in its input, and data entries have been 3746 left as is so as not to break existing implementations. 3747 3748 3749 Release data94f - 1994-08-20 12:56:09 -0400 3750 3751 (with thanks!) the latest data updates from Paul Eggert 3752 3753 3754 Release data94e - 1994-06-04 13:13:53 -0400 3755 3756 [not summarized] 3757 3758 3759 Release code94g - 1994-05-05 12:14:07 -0400 3760 3761 fix missing "optind.c" and a reference to it in the Makefile 3762 3763 3764 Release code94f - 1994-05-05 13:00:33 -0000 3765 [tzcode94f.tar.gz is missing!] 3766 3767 changes to avoid overflow in difftime, as well as changes to cope 3768 with the 52/53 challenge in strftime 3769 3770 3771 Release code94e - 1994-03-30 23:32:59 -0500 3772 3773 change for the benefit of PCTS 3774 3775 3776 Release 94d - 1994-02-24 15:42:25 -0500 3777 3778 Avoid clashes with POSIX semantics for zones such as GMT+4. 3779 3780 Some other very minor housekeeping is also present. 3781 3782 3783 Release code94c - 1994-02-10 08:52:40 -0500 3784 3785 Fix bug where mkdirs was broken unless you compile with 3786 -fwritable-strings (which is generally losing to do). 3787 3788 3789 Release 94b - 1994-02-07 10:04:33 -0500 3790 3791 work by Paul Eggert who notes: 3792 3793 I found another book of time zone histories by E W Whitman; it's not 3794 as extensive as Shanks but has a few goodies of its own. I used it 3795 to update the tables. I also fixed some more as a result of 3796 correspondence with Adam David and Peter Ilieve, and move some stray 3797 links from 'europe' to 'backward'. I corrected some scanning errors 3798 in usno1989. 3799 3800 As far as the code goes, I fixed zic to allow years in the range 3801 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 3802 And I cleaned up the zic documentation a little bit. 3803 3804 3805 Release data94a - 1994-02-03 08:58:54 -0500 3806 3807 It simply incorporates the recently announced leap second into the 3808 "leapseconds" file. 3809 3810 3811 Release 93g - 1993-11-22 17:28:27 -0500 3812 3813 Paul Eggert has provided a good deal of historic information (based 3814 on Shanks), and there are some code changes to deal with the buglets 3815 that crawled out in dealing with the new information. 3816 3817 3818 Release 93f - 1993-10-15 12:27:46 -0400 3819 3820 Paul Eggert's changes 3821 3822 3823 Release 93e - 1993-09-05 21:21:44 -0400 3824 3825 This has updated data for Israel, England, and Kwajalein. There's 3826 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 3827 Thanks to Paul Eggert and Peter Ilieve for the changes. 3828 3829 3830 Release 93d - 1993-06-17 23:34:17 -0400 3831 3832 new fix and new data on Israel 3833 3834 3835 Release 93c - 1993-06-06 19:31:55 -0400 3836 3837 [not summarized] 3838 3839 3840 Release 93b - 1993-02-02 14:53:58 -0500 3841 3842 updated "leapseconds" file 3843 3844 3845 Release 93 - 1993-01-08 07:01:06 -0500 3846 3847 At kre's suggestion, the package has been split in two - a code piece 3848 (which also includes documentation) that's only of use to folks who 3849 want to recompile things and a data piece useful to anyone who can 3850 run "zic". 3851 3852 The new version has a few changes to the data files, a few 3853 portability changes, and an off-by-one fix (with thanks to 3854 Tom Karzes at deshaw.com for providing a description and a 3855 solution). 3856 3857 3858 Release 92c - 1992-11-21 17:35:36 -0000 3859 [tz92c.tar.Z is missing!] 3860 3861 The fallout from the latest round of DST transitions. 3862 3863 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3864 there's also a change to "zic.c" that makes it portable to more systems. 3865 3866 3867 Release 92 - 1992-04-25 18:17:03 -0000 3868 [tz92.tar.Z is missing!] 3869 3870 By popular demand (well, at any rate, following a request by kre at munnari) 3871 3872 3873 The 1989 update of the time zone package featured: 3874 3875 * POSIXization (including interpretation of POSIX-style TZ environment 3876 variables, provided by Guy Harris), 3877 * ANSIfication (including versions of "mktime" and "difftime"), 3878 * SVIDulation (an "altzone" variable) 3879 * MACHination (the "gtime" function) 3880 * corrections to some time zone data (including corrections to the rules 3881 for Great Britain and New Zealand) 3882 * reference data from the United States Naval Observatory for folks who 3883 want to do additional time zones 3884 * and the 1989 data for Saudi Arabia. 3885 3886 (Since this code will be treated as "part of the implementation" in some 3887 places and as "part of the application" in others, there's no good way to 3888 name functions, such as timegm, that are not part of the proposed ANSI C 3889 standard; such functions have kept their old, underscore-free names in this 3890 update.) 3891 3892 And the "dysize" function has disappeared; it was present to allow 3893 compilation of the "date" command on old BSD systems, and a version of "date" 3894 is now provided in the package. The "date" command is not created when you 3895 "make all" since it may lack options provided by the version distributed with 3896 your operating system, or may not interact with the system in the same way 3897 the native version does. 3898 3899 Since POSIX frowns on correct leap second handling, the default behavior of 3900 the "zic" command (in the absence of a "-L" option) has been changed to omit 3901 leap second information from its output files. 3902 3903 3904 ----- 3905 Notes 3906 3907 This file contains copies of the part of each release announcement 3908 that talks about the changes in that release. The text has been 3909 adapted and reformatted for the purposes of this file. 3910 3911 Traditionally a release R consists of a pair of tarball files, 3912 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3913 code2010a, data2012c) consist of just one or the other tarball, and a 3914 few (e.g., code2012c-data2012d) have tarballs with mixed version 3915 numbers. Recent releases also come in an experimental format 3916 consisting of a single tarball tzdb-R.tar.lz with extra data. 3917 3918 Release timestamps are taken from the release's commit (for newer, 3919 Git-based releases), from the newest file in the tarball (for older 3920 releases, where this info is available) or from the email announcing 3921 the release (if all else fails; these are marked with a time zone of 3922 -0000 and an "is missing!" comment). 3923 3924 Earlier versions of the code and data were not announced on the tz 3925 list and are not summarized here. 3926 3927 This file is in the public domain. 3928 3929 Local Variables: 3930 coding: utf-8 3931 End: 3932
Indexes created Mon Sep 29 18:09:42 GMT 2025