NEWS revision 1.16
1 News for the tz database 2 3 Release 2016f - 2016-07-05 16:26:51 +0200 4 5 Changes affecting future time stamps 6 7 The Egyptian government changed its mind on short notice, and 8 Africa/Cairo will not introduce DST starting 2016-07-07 after all. 9 (Thanks to Mina Samuel.) 10 11 Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00. 12 (Thanks to Stepan Golosunov.) 13 14 Changes to past and future time stamps 15 16 Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone 17 abbreviations instead of invented ones. 18 19 Changes affecting past time stamps 20 21 Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00. 22 (Thanks to Stepan Golosunov.) 23 24 25 Release 2016e - 2016-06-14 08:46:16 -0700 26 27 Changes affecting future time stamps 28 29 Africa/Cairo observes DST in 2016 from July 7 to the end of October. 30 Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.) 31 For future years, guess April's last Thursday to October's last 32 Thursday except for Ramadan. 33 34 Changes affecting past time stamps 35 36 Locations while uninhabited now use '-00', not 'zzz', as a 37 placeholder time zone abbreviation. This is inspired by Internet 38 RFC 3339 and is more consistent with numeric time zone 39 abbreviations already used elsewhere. The change affects several 40 arctic and antarctic locations, e.g., America/Cambridge_Bay before 41 1920 and Antarctica/Troll before 2005. 42 43 Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was 44 at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.) 45 46 Changes to code 47 48 zic now outputs a dummy transition at time 2**31 - 1 in zones 49 whose POSIX-style TZ strings contain a '<'. This mostly works 50 around Qt bug 53071 <https://bugreports.qt.io/browse/QTBUG-53071>. 51 (Thanks to Zhanibek Adilbekov for reporting the Qt bug.) 52 53 Changes affecting documentation and commentary 54 55 tz-link.htm says why governments should give plenty of notice for 56 time zone or DST changes, and refers to Matt Johnson's blog post. 57 58 tz-link.htm mentions Tzdata for Elixir. (Thanks to Matt Johnson.) 59 60 61 Release 2016d - 2016-04-17 22:50:29 -0700 62 63 Changes affecting future time stamps 64 65 America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30. 66 (Thanks to Alexander Krivenyshev for the heads-up.) 67 68 Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00. 69 (Thanks to Alexander Krivenyshev and Matt Johnson.) 70 71 New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers 72 Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29 73 at 02:00. (Thanks to Stepan Golosunov.) 74 75 Changes affecting past time stamps 76 77 New zone Europe/Kirov, split off from Europe/Volgograd. It covers 78 Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on 79 1989-03-26 at 02:00, roughly a year after Europe/Volgograd made 80 the same change. (Thanks to Stepan Golosunov.) 81 82 Russia and nearby locations had daylight-saving transitions on 83 1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on 84 1992-03-28 at 23:00 and 1992-09-26 at 23:00. (Thanks to Stepan 85 Golosunov.) 86 87 Many corrections to historical time in Kazakhstan from 1991 88 through 2005. (Thanks to Stepan Golosunov.) Replace Kazakhstan's 89 invented time zone abbreviations with numeric abbreviations. 90 91 Changes to commentary 92 93 Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references). 94 95 96 Release 2016c - 2016-03-23 00:51:27 -0700 97 98 Changes affecting future time stamps 99 100 Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.) 101 102 Chile reverts from permanent to seasonal DST. (Thanks to Juan 103 Correa for the heads-up, and to Tim Parenti for corrections.) 104 Guess that future transitions are August's and May's second 105 Saturdays at 24:00 mainland time. Also, call the period from 106 2014-09-07 through 2016-05-14 daylight saving time instead of 107 standard time, as that seems more appropriate now. 108 109 Changes affecting past time stamps 110 111 Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to 112 +02/+03 on 1989-03-26, not 1991-03-31. Europe/Volgograd changed 113 from +04/+05 to +03/+04 on 1988-03-27, not 1989-03-26. 114 (Thanks to Stepan Golosunov.) 115 116 Changes to commentary 117 118 Several updates and URLs for historical and proposed Russian changes. 119 (Thanks to Stepan Golosunov, Matt Johnson, and Alexander Krivenyshev.) 120 121 122 Release 2016b - 2016-03-12 17:30:14 -0800 123 124 Compatibility note 125 126 Starting with release 2016b, some data entries cause zic implementations 127 derived from tz releases 2005j through 2015e to issue warnings like 128 "time zone abbreviation differs from POSIX standard (+03)". 129 These warnings should not otherwise affect zic's output and can safely be 130 ignored on today's platforms, as the warnings refer to a restriction in 131 POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the 132 warnings is to upgrade to zic derived from tz releases 2015f and later. 133 134 Changes affecting future time stamps 135 136 New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and 137 Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on 138 2016-03-27 at 02:00 local time. They need distinct zones since their 139 post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and 140 Altai Republic, Russia, which will switch from +06 to +07 on the same date 141 and local time. The Astrakhan change is already official; the others have 142 passed the first reading in the State Duma and are extremely likely. 143 Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00. 144 (Thanks to Alexander Krivenyshev for the heads-up, and to Matt Johnson 145 and Stepan Golosunov for followup.) 146 147 As a trial of a new system that needs less information to be made up, 148 the new zones use numeric time zone abbreviations like "+04" 149 instead of invented abbreviations like "ASTT". 150 151 Haiti will not observe DST in 2016. (Thanks to Jean Antoine via 152 Steffen Thorsen.) 153 154 Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00. 155 (Thanks to Hannah Kreitem.) Guess future transitions will be March's last 156 Saturday at 01:00, not March's last Friday at 24:00. 157 158 Changes affecting past time stamps 159 160 Europe/Chisinau observed DST during 1990, and switched from +04 to 161 +03 at 1990-05-06 02:00, instead of switching from +03 to +02. 162 (Thanks to Stepan Golosunov.) 163 164 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not 165 KUYT/KUYST. (Thanks to Stepan Golosunov.) 166 167 Changes to code 168 169 tzselect's diagnostics and checking, and checktab.awk's checking, 170 have been improved. (Thanks to J William Piggott.) 171 172 tzcode now builds under MinGW. (Thanks to Ian Abbott and Esben Haabendal.) 173 174 tzselect now tests Julian-date TZ settings more accurately. 175 (Thanks to J William Piggott.) 176 177 Changes to commentary 178 179 Comments in zone tables have been improved. (Thanks to J William Piggott.) 180 181 tzselect again limits its menu comments so that menus fit on a 182 24x80 alphanumeric display. 183 184 A new web page tz-how-to.html. (Thanks to Bill Seymour.) 185 186 In the Theory file, the description of possible time zone abbreviations in 187 tzdata has been cleaned up, as the old description was unclear and 188 inconsistent. (Thanks to Alain Mouette for reporting the problem.) 189 190 191 Release 2016a - 2016-01-26 23:28:02 -0800 192 193 Changes affecting future time stamps 194 195 America/Cayman will not observe daylight saving this year after all. 196 Revert our guess that it would. (Thanks to Matt Johnson.) 197 198 Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00. 199 (Thanks to Alexander Krivenyshev.) 200 201 Asia/Tehran now has DST predictions for the year 2038 and later, 202 to be March 21 00:00 to September 21 00:00. This is likely better 203 than predicting no DST, albeit off by a day every now and then. 204 205 Changes affecting past and future time stamps 206 207 America/Metlakatla switched from PST all year to AKST/AKDT on 208 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.) 209 210 America/Santa_Isabel has been removed, and replaced with a 211 backward compatibility link to America/Tijuana. Its contents were 212 apparently based on a misreading of Mexican legislation. 213 214 Changes affecting past time stamps 215 216 Asia/Karachi's two transition times in 2002 were off by a minute. 217 (Thanks to Matt Johnson.) 218 219 Changes affecting build procedure 220 221 An installer can now combine leap seconds with use of the backzone file, 222 e.g., with 'make PACKRATDATA=backzone REDO=posix_right zones'. 223 The old 'make posix_packrat' rule is now marked as obsolescent. 224 (Thanks to Ian Abbott for an initial implementation.) 225 226 Changes affecting documentation and commentary 227 228 A new file LICENSE makes it easier to see that the code and data 229 are mostly public-domain. (Thanks to James Knight.) The three 230 non-public-domain files now use the current (3-clause) BSD license 231 instead of older versions of that license. 232 233 tz-link.htm mentions the BDE library (thanks to Andrew Paprocki), 234 CCTZ (thanks to Tim Parenti), TimeJones.com, and has a new section 235 on editing tz source files (with a mention of Sublime zoneinfo, 236 thanks to Gilmore Davidson). 237 238 The Theory and asia files now mention the 2015 book "The Global 239 Transformation of Time, 1870-1950", and cite a couple of reviews. 240 241 The America/Chicago entry now documents the informal use of US 242 central time in Fort Pierre, South Dakota. (Thanks to Rick 243 McDermid, Matt Johnson, and Steve Jones.) 244 245 246 Release 2015g - 2015-10-01 00:39:51 -0700 247 248 Changes affecting future time stamps 249 250 Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25. 251 (Thanks to Fatih.) 252 253 Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time. 254 (Thanks to Alexander Krivenyshev.) 255 256 Fiji's 2016 fall-back transition is scheduled for January 17, not 24. 257 (Thanks to Ken Rylander.) 258 259 Fort Nelson, British Columbia will not fall back on 2015-11-01. It has 260 effectively been on MST (-0700) since it advanced its clocks on 2015-03-08. 261 New zone America/Fort_Nelson. (Thanks to Matt Johnson.) 262 263 Changes affecting past time stamps 264 265 Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00. 266 267 Changes affecting code 268 269 localtime no longer mishandles America/Anchorage after 2037. 270 (Thanks to Bradley White for reporting the bug.) 271 272 On hosts with signed 32-bit time_t, localtime no longer mishandles 273 Pacific/Fiji after 2038-01-16 14:00 UTC. 274 275 The localtime module allows the variables 'timezone', 'daylight', 276 and 'altzone' to be in common storage shared with other modules, 277 and declares them in case the system <time.h> does not. 278 (Problems reported by Kees Dekker.) 279 280 On platforms with tm_zone, strftime.c now assumes it is not NULL. 281 This simplifies the code and is consistent with zdump.c. 282 (Problem reported by Christos Zoulas.) 283 284 Changes affecting documentation 285 286 The tzfile man page now documents that transition times denote the 287 starts (not the ends) of the corresponding time periods. 288 (Ambiguity reported by Bill Seymour.) 289 290 291 Release 2015f - 2015-08-10 18:06:56 -0700 292 293 Changes affecting future time stamps 294 295 North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) 296 The abbreviation remains "KST". (Thanks to Robert Elz.) 297 298 Uruguay no longer observes DST. (Thanks to Steffen Thorsen 299 and Pablo Camargo.) 300 301 Changes affecting past and future time stamps 302 303 Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. 304 (Thanks to Roman Tudos.) 305 306 Changes affecting data format and code 307 308 zic's '-y YEARISTYPE' option is no longer documented. The TYPE 309 field of a Rule line should now be '-'; the old values 'even', 310 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. 311 Although the implementation has not changed, these features do not 312 work in the default installation, they are not used in the data, 313 and they are now considered obsolescent. 314 315 zic now checks that two rules don't take effect at the same time. 316 (Thanks to Jon Skeet and Arthur David Olson.) Constraints on 317 simultaneity are now documented. 318 319 The two characters '%z' in a zone format now stand for the UTC 320 offset, e.g., '-07' for seven hours behind UTC and '+0530' for 321 five hours and thirty minutes ahead. This better supports time 322 zone abbreviations conforming to POSIX.1-2001 and later. 323 324 Changes affecting installed data files 325 326 Comments for America/Halifax and America/Glace_Bay have been improved. 327 (Thanks to Brian Inglis.) 328 329 Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, 330 Europe/Sofia, and Europe/Tallinn. This yields slightly smaller 331 installed data files for Europe/Simferopol and Europe/Tallinn. 332 It does not affect timestamps. (Thanks to Howard Hinnant.) 333 334 Changes affecting code 335 336 zdump and zic no longer warn about valid time zone abbreviations 337 like '-05'. 338 339 Some Visual Studio 2013 warnings have been suppressed. 340 (Thanks to Kees Dekker.) 341 342 'date' no longer sets the time of day and its -a, -d, -n and -t 343 options have been removed. Long obsolescent, the implementation 344 of these features had porting problems. Builders no longer need 345 to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. 346 (Thanks to Kees Dekker for pointing out the problem.) 347 348 Changes affecting documentation 349 350 The Theory file mentions naming issues earlier, as these seem to be 351 poorly publicized (thanks to Gilmore Davidson for reporting the problem). 352 353 tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). 354 355 Mention that Herbert Samuel introduced the term "Summer Time". 356 357 358 Release 2015e - 2015-06-13 10:56:02 -0700 359 360 Changes affecting future time stamps 361 362 Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, 363 not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.) 364 365 Assume Cayman Islands will observe DST starting next year, using US rules. 366 Although it isn't guaranteed, it is the most likely. 367 368 Changes affecting data format 369 370 The file 'iso3166.tab' now uses UTF-8, so that its entries can better 371 spell the names of land Islands, Cte d'Ivoire, and Runion. 372 373 Changes affecting code 374 375 When displaying data, tzselect converts it to the current locale's 376 encoding if the iconv command works. (Problem reported by random832.) 377 378 tzselect no longer mishandles Dominica, fixing a bug introduced 379 in Release 2014f. (Problem reported by Owen Leibman.) 380 381 zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\". 382 This fixes a bug introduced in Release 2014f. 383 (Problem reported by Leonardo Chiquitto.) 384 385 386 Release 2015d - 2015-04-24 08:09:46 -0700 387 388 Changes affecting future time stamps 389 390 Egypt will not observe DST in 2015 and will consider canceling it 391 permanently. For now, assume no DST indefinitely. 392 (Thanks to Ahmed Nazmy and Tim Parenti.) 393 394 Changes affecting past time stamps 395 396 America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not 397 1966-07-01. Also, Yukon's time zone history is documented better. 398 (Thanks to Brian Inglis and Dennis Ferguson.) 399 400 Change affecting past and future time zone abbreviations 401 402 The abbreviations for Hawaii-Aleutian standard and daylight times 403 have been changed from HAST/HADT to HST/HDT, as per US Government 404 Printing Office style. This affects only America/Adak since 1983, 405 as America/Honolulu was already using the new style. 406 407 Changes affecting code 408 409 zic has some minor performance improvements. 410 411 412 Release 2015c - 2015-04-11 08:55:55 -0700 413 414 Changes affecting future time stamps 415 416 Egypt's spring-forward transition is at 24:00 on April's last Thursday, 417 not 00:00 on April's last Friday. 2015's transition will therefore be on 418 Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 419 apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 420 421 Changes affecting past time stamps 422 423 The following changes affect some pre-1991 Chile-related time stamps 424 in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 425 426 The 1910 transition was January 10, not January 1. 427 428 The 1918 transition was September 10, not September 1. 429 430 The UTC-4 time observed from 1932 to 1942 is now considered to be 431 standard time, not year-round DST. 432 433 Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31, 434 then reverted to standard time, then switched its time zone to 435 UTC-5 on 1947-04-01. 436 437 Assume transitions before 1968 were at 00:00, since we have no data 438 saying otherwise. 439 440 The spring 1988 transition was 1988-10-09, not 1988-10-02. 441 The fall 1990 transition was 1990-03-11, not 1990-03-18. 442 443 Assume no UTC offset change for Pacific/Easter on 1890-01-01, 444 and omit all transitions on Pacific/Easter from 1942 through 1946 445 since we have no data suggesting that they existed. 446 447 One more zone has been turned into a link, as it differed 448 from an existing zone only for older time stamps. As usual, 449 this change affects UTC offsets in pre-1970 time stamps only. 450 The zone's old contents have been moved to the 'backzone' file. 451 The affected zone is America/Montreal. 452 453 Changes affecting commentary 454 455 Mention the TZUpdater tool. 456 457 Mention "The Time Now". (Thanks to Brandon Ramsey.) 458 459 460 Release 2015b - 2015-03-19 23:28:11 -0700 461 462 Changes affecting future time stamps 463 464 Mongolia will start observing DST again this year, from the last 465 Saturday in March at 02:00 to the last Saturday in September at 00:00. 466 (Thanks to Ganbold Tsagaankhuu.) 467 468 Palestine will start DST on March 28, not March 27. Also, 469 correct the fall 2014 transition from September 26 to October 24. 470 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 471 472 Changes affecting past time stamps 473 474 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 475 regression. (Thanks to Stuart Bishop for reporting the problem.) 476 477 Some more zones have been turned into links, when they differed 478 from existing zones only for older time stamps. As usual, 479 these changes affect UTC offsets in pre-1970 time stamps only. 480 Their old contents have been moved to the 'backzone' file. 481 The affected zones are: America/Antigua, America/Cayman, 482 Pacific/Midway, and Pacific/Saipan. 483 484 Changes affecting time zone abbreviations 485 486 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 487 (Thanks to Hank W.) 488 489 Changes affecting code 490 491 Fix integer overflow bug in reference 'mktime' implementation. 492 (Problem reported by Jrg Richter.) 493 494 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 495 to be used in the same executable as standard-library time_t functions. 496 (Problems reported by Bradley White.) 497 498 Changes affecting commentary 499 500 Cite the recent Mexican decree changing Quintana Roo's time zone. 501 (Thanks to Carlos Ral Perasso.) 502 503 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 504 505 Update info about Mars time. 506 507 508 Release 2015a - 2015-01-29 22:35:20 -0800 509 510 Changes affecting future time stamps 511 512 The Mexican state of Quintana Roo, represented by America/Cancun, 513 will shift from Central Time with DST to Eastern Time without DST 514 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 515 516 Chile will not change clocks in April or thereafter; its new standard time 517 will be its old daylight saving time. This affects America/Santiago, 518 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 519 520 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 521 (Thanks to Tim Parenti.) 522 523 Changes affecting past time stamps 524 525 Iceland observed DST in 1919 and 1921, and its 1939 fallback 526 transition was Oct. 29, not Nov. 29. Remove incorrect data from 527 Shanks about time in Iceland between 1837 and 1908. 528 529 Some more zones have been turned into links, when they differed 530 from existing zones only for older time stamps. As usual, 531 these changes affect UTC offsets in pre-1970 time stamps only. 532 Their old contents have been moved to the 'backzone' file. 533 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 534 and Asia/Muscat. 535 536 Changes affecting code 537 538 tzalloc now scrubs time zone abbreviations compatibly with the way 539 that tzset always has, by replacing invalid bytes with '_' and by 540 shortening too-long abbreviations. 541 542 tzselect ports to POSIX awk implementations, no longer mishandles 543 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 544 settings to the user. (Thanks to Stefan Kuhn.) 545 546 Changes affecting build procedure 547 548 'make check' now checks for links to links in the data. 549 One such link (for Africa/Asmera) has been fixed. 550 (Thanks to Stephen Colebourne for pointing out the problem.) 551 552 Changes affecting commentary 553 554 The leapseconds file commentary now mentions the expiration date. 555 (Problem reported by Martin Burnicki.) 556 557 Update Mexican Library of Congress URL. 558 559 560 Release 2014j - 2014-11-10 17:37:11 -0800 561 562 Changes affecting current and future time stamps 563 564 Turks & Caicos' switch from US eastern time to UTC-4 year-round 565 did not occur on 2014-11-02 at 02:00. It's currently scheduled 566 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 567 568 Changes affecting past time stamps 569 570 Many pre-1989 time stamps have been corrected for Asia/Seoul and 571 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 572 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 573 longer guess that Pyongyang mimicked Seoul time after World War II, 574 as this is politically implausible. 575 576 Some more zones have been turned into links, when they differed 577 from existing zones only for older time stamps. As usual, 578 these changes affect UTC offsets in pre-1970 time stamps only. 579 Their old contents have been moved to the 'backzone' file. 580 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 581 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 582 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 583 Indian/Mayotte. 584 585 Changes affecting commentary 586 587 The commentary is less enthusiastic about Shanks as a source, 588 and is more careful to distinguish UT from UTC. 589 590 591 Release 2014i - 2014-10-21 22:04:57 -0700 592 593 Changes affecting future time stamps 594 595 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 596 (Thanks to Ken Rylander for the heads-up.) Guess that future 597 years will use a similar pattern. 598 599 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 600 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 601 (Thanks to Kiley Walbom for the heads-up.) 602 603 Changes affecting time zone abbreviations 604 605 Since Belarus is not changing its clocks even though Moscow is, 606 the time zone abbreviation in Europe/Minsk is changing from FET 607 to its more-traditional value MSK on 2014-10-26 at 01:00. 608 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 609 610 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 611 Indochina, to distinguish it better from ICT (UT+7). 612 613 Changes affecting past time stamps 614 615 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 616 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 617 authoritative book). Asia/Ho_Chi_Minh has been added to 618 zone1970.tab, to give tzselect users in Vietnam two choices, 619 since north and south Vietnam disagreed after our 1970 cutoff. 620 621 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 622 they differed from existing zones only for older time stamps. As 623 usual, these changes affect pre-1970 time stamps only. Their old 624 contents have been moved to the 'backzone' file. 625 626 Changes affecting code 627 628 The time-related library functions now set errno on failure, and 629 some crashes in the new tzalloc-related library functions have 630 been fixed. (Thanks to Christos Zoulas for reporting most of 631 these problems and for suggesting fixes.) 632 633 If USG_COMPAT is defined and the requested time stamp is standard time, 634 the tz library's localtime and mktime functions now set the extern 635 variable timezone to a value appropriate for that time stamp; and 636 similarly for ALTZONE, daylight saving time, and the altzone variable. 637 This change is a companion to the tzname change in 2014h, and is 638 designed to make timezone and altzone more compatible with tzname. 639 640 The tz library's functions now set errno to EOVERFLOW if they fail 641 because the result cannot be represented. ctime and ctime_r now 642 return NULL and set errno when a time stamp is out of range, rather 643 than having undefined behavior. 644 645 Some bugs associated with the new 2014g functions have been fixed. 646 This includes a bug that largely incapacitated the new functions 647 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 648 It also includes some uses of uninitialized variables after tzalloc. 649 The new code uses the standard type 'ssize_t', which the Makefile 650 now gives porting advice about. 651 652 Changes affecting commentary 653 654 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 655 656 657 Release 2014h - 2014-09-25 18:59:03 -0700 658 659 Changes affecting past time stamps 660 661 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 662 663 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 664 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 665 666 Some more zones have been turned into links, when they differed 667 from existing zones only for older time stamps. As usual, 668 these changes affect UTC offsets in pre-1970 time stamps only. 669 Their old contents have been moved to the 'backzone' file. 670 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 671 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 672 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 673 674 Changes affecting code 675 676 zdump -V and -v now output gmtoff= values on all platforms, 677 not merely on platforms defining TM_GMTOFF. 678 679 The tz library's localtime and mktime functions now set tzname to a value 680 appropriate for the requested time stamp, and zdump now uses this 681 on platforms not defining TM_ZONE, fixing a 2014g regression. 682 (Thanks to Tim Parenti for reporting the problem.) 683 684 The tz library no longer sets tzname if localtime or mktime fails. 685 686 zdump -c no longer mishandles transitions near year boundaries. 687 (Thanks to Tim Parenti for reporting the problem.) 688 689 An access to uninitalized data has been fixed. 690 (Thanks to Jrg Richter for reporting the problem.) 691 692 When THREAD_SAFE is defined, the code ports to the C11 memory model. 693 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 694 and two threads race to initialize data used by gmtime-like functions. 695 (Thanks to Andy Heninger for reporting the problems.) 696 697 Changes affecting build procedure 698 699 'make check' now checks better for properly-sorted data. 700 701 Changes affecting documentation and commentary 702 703 zdump's gmtoff=N output is now documented, and its isdst=D output 704 is now documented to possibly output D values other than 0 or 1. 705 706 zdump -c's treatment of years is now documented to use the 707 Gregorian calendar and Universal Time without leap seconds, 708 and its behavior at cutoff boundaries is now documented better. 709 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 710 711 Programs are now documented to use the proleptic Gregorian calendar. 712 (Thanks to Alan Barrett for the suggestion.) 713 714 Fractional-second GMT offsets have been documented for civil time 715 in 19th-century Chennai, Jakarta, and New York. 716 717 718 Release 2014g - 2014-08-28 12:31:23 -0700 719 720 Changes affecting future time stamps 721 722 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 723 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 724 [As noted in 2014j, this switch was later delayed.] 725 726 Changes affecting past time stamps 727 728 Time in Russia or the USSR before 1926 or so has been corrected by 729 a few seconds in the following zones: Asia/Irkutsk, 730 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 731 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 732 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 733 Vladimir Karpinsky.) 734 735 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 736 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 737 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 738 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 739 (Thanks to Stephen Colebourne for pointing to the decree.) 740 741 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 742 743 A new file 'backzone' contains data which may appeal to 744 connoisseurs of old time stamps, although it is out of scope for 745 the tz database, is often poorly sourced, and contains some data 746 that is known to be incorrect. The new file is not recommended 747 for ordinary use and its entries are not installed by default. 748 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 749 Isle of Man entries.) 750 751 Some more zones have been turned into links, when they differed 752 from existing zones only for older time stamps. As usual, 753 these changes affect UTC offsets in pre-1970 time stamps only. 754 Their old contents have been moved to the 'backzone' file. 755 The affected zones are: Africa/Bangui, Africa/Brazzaville, 756 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 757 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 758 759 Changes affecting code 760 761 Unless NETBSD_INSPIRED is defined to 0, the tz library now 762 supplies functions for creating and using objects that represent 763 time zones. The new functions are tzalloc, tzfree, localtime_rz, 764 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 765 time2posix_z. They are intended for performance: for example, 766 localtime_rz (unlike localtime_r) is trivially thread-safe without 767 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 768 functions, and to Alan Barrett and Jonathan Lennox for helping to 769 debug the change.) 770 771 zdump now builds with the tz library unless USE_LTZ is defined to 0, 772 This lets zdump use tz features even if the system library lacks them. 773 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 774 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 775 776 zdump now uses localtime_rz if available, as it's significantly faster, 777 and it can help zdump better diagnose invalid time zone names. 778 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 779 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 780 not available, zdump now uses localtime_r and tzset if available, 781 as this is a bit cleaner and faster than plain localtime. Compile 782 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 783 lacks these two functions. 784 785 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 786 Although not needed for tz's own applications, which are single-threaded, 787 this supports POSIX better if the tz library is used in multithreaded apps. 788 789 Some crashes have been fixed when zdump or the tz library is given 790 invalid or outlandish input. 791 792 The tz library no longer mishandles leap seconds on platforms with 793 unsigned time_t in time zones that lack ordinary transitions after 1970. 794 795 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 796 already defined, to make it easier to configure on common platforms. 797 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 798 799 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 800 assumes that reading uninitialized memory yields garbage values 801 but does not cause other problems such as traps. 802 803 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 804 more likely to guess right for ambiguous time stamps near 805 transitions where tm_isdst does not change. 806 807 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 808 strftime_l for compatibility with recent versions of POSIX. 809 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 810 to 1 on recent POSIX versions, and to 0 otherwise. 811 812 tzselect -c now uses a hybrid distance measure that works better 813 in Africa. (Thanks to Alan Barrett for noting the problem.) 814 815 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 816 or when time_tz is defined. 817 818 When HAVE_UTMPX_H is set the 'date' command now builds on systems 819 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 820 the date it updates the wtmpx file if _PATH_WTMPX is defined. 821 This affects GNU/Linux and similar systems. 822 823 For easier maintenance later, some C code has been simplified, 824 some lint has been removed, and the code has been tweaked so that 825 plain 'make' is more likely to work. 826 827 The C type 'bool' is now used for boolean values, instead of 'int'. 828 829 The long-obsolete LOCALE_HOME code has been removed. 830 831 The long-obsolete 'gtime' function has been removed. 832 833 Changes affecting build procedure 834 835 'zdump' no longer links in ialloc.o, as it's not needed. 836 837 'make check_time_t_alternatives' no longer assumes GNU diff. 838 839 Changes affecting distribution tarballs 840 841 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 842 the tzdata tarball instead of the tzcode tarball, since they help 843 maintain the data. The NEWS and Theory files are now also 844 distributed in the tzdata tarball, as they're relevant for data. 845 (Thanks to Alan Barrett for pointing this out.) Also, the 846 leapseconds.awk file is no longer distributed in the tzcode 847 tarball, since it belongs in the tzdata tarball (where 2014f 848 inadvertently also distributed it). 849 850 Changes affecting documentation and commentary 851 852 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 853 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 854 for debugging it.) 855 856 The man pages have been updated to use function prototypes, 857 to document thread-safe variants like localtime_r, and to document 858 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 859 mktime_z. 860 861 The fields in Link lines have been renamed to be more descriptive 862 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 863 and LINK-TO has become LINK-NAME. 864 865 tz-link.htm mentions the IETF's tzdist working group; Windows 866 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 867 868 Some broken URLs have been fixed in the commentary. (Thanks to 869 Lester Caine.) 870 871 Commentary about Philippines DST has been updated, and commentary 872 on pre-1970 time in India has been added. 873 874 875 Release 2014f - 2014-08-05 17:42:36 -0700 876 877 Changes affecting future time stamps 878 879 Russia will subtract an hour from most of its time zones on 2014-10-26 880 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 881 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 882 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 883 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 884 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 885 (Europe/Samara) are not changing their clocks. The changed zones are 886 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 887 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 888 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 889 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 890 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 891 but not its UTC offset. Two zones are added: Asia/Chita (split 892 from Asia/Yakutsk, and also with two hours subtracted) and 893 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 894 subtracted). (Thanks to Tim Parenti for much of the above.) 895 896 Changes affecting time zone abbreviations 897 898 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 899 and similarly for the other Australian zones. That is, for eastern 900 standard and daylight saving time the abbreviations are AEST and AEDT 901 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 902 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 903 This change does not affect UTC offsets, only time zone abbreviations. 904 (Thanks to Rich Tibbett and many others.) 905 906 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 907 effective 2014-10-26 at 02:00 local time. 908 909 The time zone abbreviation for Xinjiang Time (observed in rmqi) 910 has been changed from URUT to XJT. (Thanks to Luther Ma.) 911 912 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 913 Similarly, prefer EET/EEST for eastern European time in Russia. 914 915 Change time zone abbreviations in (western) Samoa to use "ST" and 916 "DT" suffixes, as this is more likely to match common practice. 917 Prefix "W" to (western) Samoa time when its standard-time offset 918 disagrees with that of American Samoa. 919 920 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 921 922 Time zone abbreviations have been updated for Japan's two time 923 zones used 1896-1937. JWST now stands for Western Standard 924 Time, and JCST for Central Standard Time (formerly this was CJT). 925 These abbreviations are now used for time in Korea, Taiwan, 926 and Sakhalin while controlled by Japan. 927 928 Changes affecting past time stamps 929 930 China's five zones have been simplified to two, since the post-1970 931 differences in the other three seem to have been imaginary. The 932 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 933 removed; backwards-compatibility links still work, albeit with 934 different behaviors for time stamps before May 1980. Asia/Urumqi's 935 1980 transition to UTC+8 has been removed, so that it is now at 936 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 937 Treindl sent helpful translations of two papers by Guo Qingsheng.) 938 939 Some zones have been turned into links, when they differed from existing 940 zones only for older UTC offsets where data entries were likely invented. 941 These changes affect UTC offsets in pre-1970 time stamps only. This is 942 similar to the change in release 2013e, except this time for western 943 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 944 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 945 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 946 Atlantic/St_Helena. This also affects the backwards-compatibility 947 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 948 Tim Parenti, and David Patte for reporting problems in earlier 949 versions of this change.) 950 951 Asia/Shanghai's pre-standard-time UT offset has been changed from 952 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 953 transition to standard time has been changed from 1928 to 1901. 954 955 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 956 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 957 In 1946 it observed DST from 05-15 through 09-30; in 1947 958 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 959 (Thanks to Yu-Cheng Chuang.) 960 961 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 962 963 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 964 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 965 966 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 967 from 1911 to 1950. 968 969 Pacific/Chatham has been changed to New Zealand standard time plus 970 45 minutes for the period before 1957, reflecting a 1956 remark in 971 the New Zealand parliament. 972 973 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 974 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 975 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 976 not 04-06 at 02:00; and there was no DST in 1920. 977 978 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 979 980 Time in Russia before 1927 or so has been corrected by a few seconds in 981 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 982 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 983 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 984 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 985 986 Changes affecting data format 987 988 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 989 The new file's extended format allows multiple country codes per zone. 990 The older file is still installed but is deprecated; its format is 991 not changing and it will still be distributed for a while, but new 992 applications should use the new file. 993 994 The new file format simplifies maintenance of obscure locations. 995 To test this, it adds coverage for the Crozet Islands and the 996 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 997 998 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 999 It is still ASCII now, but commentary about the switch has been added. 1000 The new file 'zone1970.tab' already uses UTF-8. 1001 1002 Changes affecting code 1003 1004 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 1005 is defined. (Thanks to Elliott Hughes for reporting the problem.) 1006 1007 'zic' no longer mishandles input when ignoring case in locales that 1008 are not compatible with English, e.g., unibyte Turkish locales when 1009 compiled with HAVE_GETTEXT. 1010 1011 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 1012 they no longer use ASCII '-' as if it were a dash. 1013 1014 'zic' now rejects output file names that contain '.' or '..' components. 1015 (Thanks to Tim Parenti for reporting the problem.) 1016 1017 'zic -v' now warns about output file names that do not follow 1018 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 1019 David Olson for starting the ball rolling on this.) 1020 1021 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 1022 1023 Changes affecting build procedure 1024 1025 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 1026 (Thanks to John Cochran.) 1027 1028 Changes affecting documentation and commentary 1029 1030 The 'Theory' file documents legacy names, the longstanding 1031 exceptions to the POSIX-inspired file name rules. 1032 1033 The 'zic' documentation clarifies the role of time types when 1034 interpreting dates. (Thanks to Arthur David Olson.) 1035 1036 Documentation and commentary now prefer UTF-8 to US-ASCII, 1037 allowing the use of proper accents in foreign words and names. 1038 Code and data have not changed because of this. (Thanks to 1039 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 1040 this.) 1041 1042 Non-HTML documentation and commentary now use plain-text URLs instead of 1043 HTML insertions, and are more consistent about bracketing URLs when they 1044 are not already surrounded by white space. (Thanks to suggestions by 1045 Steffen Nurpmeso.) 1046 1047 There is new commentary about Xujiahui Observatory, the five time-zone 1048 project in China from 1918 to 1949, timekeeping in Japanese-occupied 1049 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 1050 warlord Jin Shuren in the data. 1051 1052 Commentary about the coverage of each Russian zone has been standardized. 1053 (Thanks to Tim Parenti). 1054 1055 There is new commentary about contemporary timekeeping in Ethiopia. 1056 1057 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 1058 1059 There is new commentary about time in Poland in 1919. 1060 1061 Proper credit has been given to DST inventor George Vernon Hudson. 1062 1063 Commentary about time in Metlakatla, AK and Resolute, NU has been 1064 improved, with a new source for the former. 1065 1066 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 1067 is uninhabited. 1068 1069 Commentary about permanent Antarctic bases has been updated. 1070 1071 Several typos have been corrected. (Thanks to Tim Parenti for 1072 contributing some of these fixes.) 1073 1074 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 1075 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 1076 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 1077 (Thanks to a heads-up from Dirkjan Ochtman.) 1078 1079 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 1080 have been removed. These obsolescent US Naval Observatory entries were no 1081 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 1082 1083 1084 Release 2014e - 2014-06-12 21:53:52 -0700 1085 1086 Changes affecting near-future time stamps 1087 1088 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 1089 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 1090 switch to standard time at 24:00 the last Thursday before Ramadan, and 1091 back to DST at 00:00 the first Friday after Ramadan. 1092 1093 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 1094 to Milamber Space Network.) Guess that from 2015 on Morocco will 1095 temporarily switch to standard time at 03:00 the last Saturday before 1096 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 1097 1098 Changes affecting past time stamps 1099 1100 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 1101 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 1102 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 1103 in 1991. (Thanks to Hank W. for reporting the problems.) 1104 1105 Changes affecting commentary 1106 1107 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 1108 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 1109 removes stale pointers to World Time Explorer and WORLDTIME. 1110 1111 1112 Release 2014d - 2014-05-27 21:34:40 -0700 1113 1114 Changes affecting code 1115 1116 zic no longer generates files containing time stamps before the Big Bang. 1117 This works around GNOME bug 730332 1118 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 1119 (Thanks to Leonardo Chiquitto for reporting the bug, and to 1120 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 1121 1122 Changes affecting documentation 1123 1124 tz-link.htm now mentions GNOME. 1125 1126 1127 Release 2014c - 2014-05-13 07:44:13 -0700 1128 1129 Changes affecting near-future time stamps 1130 1131 Egypt observes DST starting 2014-05-15 at 24:00. 1132 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 1133 Details have not been announced, except that DST will not be observed 1134 during Ramadan. Guess that DST will stop during the same Ramadan dates as 1135 Morocco, and that Egypt's future spring and fall transitions will be the 1136 same as 2010 when it last observed DST, namely April's last Friday at 1137 00:00 to September's last Thursday at 23:00 standard time. Also, guess 1138 that Ramadan transitions will be at 00:00 standard time. 1139 1140 Changes affecting code 1141 1142 zic now generates transitions for minimum time values, eliminating guesswork 1143 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 1144 1145 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 1146 1147 Changes affecting commentary and documentation 1148 1149 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 1150 1151 1152 Release 2014b - 2014-03-24 21:28:50 -0700 1153 1154 Changes affecting near-future time stamps 1155 1156 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 1157 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 1158 1159 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 1160 Bengt-Inge Larsson.) This is currently an approximation; a better version 1161 will require the zic and localtime fixes mentioned below, and the plan is 1162 to wait for a while until at least the zic fixes propagate. 1163 1164 Changes affecting code 1165 1166 'zic' and 'localtime' no longer reject locations needing four transitions 1167 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 1168 Also, 'zic' avoids some unlikely failures due to integer overflow. 1169 1170 Changes affecting build procedure 1171 1172 'make check' now detects Rule lines defined but never used. 1173 The NZAQ rules, an instance of this problem, have been removed. 1174 1175 Changes affecting commentary and documentation 1176 1177 Fix Tuesday/Thursday typo in description of time in Israel. 1178 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 1179 1180 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 1181 to Donald MacQueen.) Instead, the Microsoft Windows Store app 1182 library supports them. 1183 1184 Add comments about Johnston Island time in the 1960s. 1185 (Thanks to Lyle McElhaney.) 1186 1187 Morocco's 2014 DST start will be as predicted. 1188 (Thanks to Sebastien Willemijns.) 1189 1190 1191 Release 2014a - 2014-03-07 23:30:29 -0800 1192 1193 Changes affecting near-future time stamps 1194 1195 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 1196 the heads-up, and to Tim Parenti for simplifying the update.) 1197 1198 Changes affecting past time stamps 1199 1200 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 1201 (Thanks to Steffen Thorsen.) 1202 1203 Ukraine switched from Moscow to Eastern European time on 1990-07-01 1204 (not 1992-01-01), and observed DST during the entire next winter. 1205 (Thanks to Vladimir in Moscow via Alois Treindl.) 1206 1207 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 1208 (Thanks to Avigdor Finkelstein.) 1209 1210 Changes affecting code 1211 1212 A uninitialized-storage bug in 'localtime' has been fixed. 1213 (Thanks to Logan Chien.) 1214 1215 Changes affecting the build procedure 1216 1217 The settings for 'make check_web' now default to Ubuntu 13.10. 1218 1219 Changes affecting commentary and documentation 1220 1221 The boundary of the US Pacific time zone is given more accurately. 1222 (Thanks to Alan Mintz.) 1223 1224 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 1225 1226 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 1227 1228 Better descriptions of countries with same time zone history as 1229 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 1230 1231 Several changes affect tz-link.htm, the main web page. 1232 1233 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 1234 David Braverman). 1235 1236 Mention xCal (Internet RFC 6321) and jCal. 1237 1238 Microsoft has some support for tz database names. 1239 1240 CLDR data formats include both XML and JSON. 1241 1242 Mention Maggiolo's map of solar vs standard time. 1243 (Thanks to Arthur David Olson.) 1244 1245 Mention TZ4Net. (Thanks to Matt Johnson.) 1246 1247 Mention the timezone-olson Haskell package. 1248 1249 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 1250 1251 Remove moribund links to daylight-savings-time.info and to 1252 Simple Timer + Clocks. 1253 1254 Update two links. (Thanks to Oscar van Vlijmen.) 1255 1256 Fix some formatting glitches, e.g., remove random newlines from 1257 abbr elements' title attributes. 1258 1259 1260 Release 2013i - 2013-12-17 07:25:23 -0800 1261 1262 Changes affecting near-future time stamps: 1263 1264 Jordan switches back to standard time at 00:00 on December 20, 2013. 1265 The 2006-2011 transition schedule is planned to resume in 2014. 1266 (Thanks to Steffen Thorsen.) 1267 1268 Changes affecting past time stamps: 1269 1270 In 2004, Cuba began DST on March 28, not April 4. 1271 (Thanks to Steffen Thorsen.) 1272 1273 Changes affecting code 1274 1275 The compile-time flag NOSOLAR has been removed, as nowadays the 1276 benefit of slightly shrinking runtime table size is outweighed by the 1277 cost of disallowing potential future updates that exceed old limits. 1278 1279 Changes affecting documentation and commentary 1280 1281 The files solar87, solar88, and solar89 are no longer distributed. 1282 They were a negative experiment - that is, a demonstration that 1283 tz data can represent solar time only with some difficulty and error. 1284 Their presence in the distribution caused confusion, as Riyadh 1285 civil time was generally not solar time in those years. 1286 1287 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 1288 1289 1290 Release 2013h - 2013-10-25 15:32:32 -0700 1291 1292 Changes affecting current and future time stamps: 1293 1294 Libya has switched its time zone back to UTC+2 without DST, 1295 instead of UTC+1 with DST. (Thanks to Even Scharning.) 1296 1297 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 1298 (Thanks to Gwillim Law.) 1299 1300 Changes affecting future time stamps: 1301 1302 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 1303 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 1304 (Thanks to Steffen Thorsen.) 1305 1306 Add entries for DST transitions in Morocco in the year 2038. 1307 This avoids some year-2038 glitches introduced in 2013g. 1308 (Thanks to Yoshito Umaoka for reporting the problem.) 1309 1310 Changes affecting API 1311 1312 The 'tzselect' command no longer requires the 'select' command, 1313 and should now work with /bin/sh on more platforms. It also works 1314 around a bug in BusyBox awk before version 1.21.0. (Thanks to 1315 Patrick 'P. J.' McDermott and Alan Barrett.) 1316 1317 Changes affecting code 1318 1319 Fix localtime overflow bugs with 32-bit unsigned time_t. 1320 1321 zdump no longer assumes sscanf returns maximal values on overflow. 1322 1323 Changes affecting the build procedure 1324 1325 The builder can specify which programs to use, if any, instead of 1326 'ar' and 'ranlib', and libtz.a is now built locally before being 1327 installed. (Thanks to Michael Forney.) 1328 1329 A dependency typo in the 'zdump' rule has been fixed. 1330 (Thanks to Andrew Paprocki.) 1331 1332 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 1333 work as specified by POSIX.2-1992 or later; this is portable nowadays. 1334 1335 'make clean' no longer removes 'leapseconds', since it's 1336 host-independent and is part of the distribution. 1337 1338 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 1339 1340 Changes affecting documentation and commentary 1341 1342 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 1343 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 1344 1345 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 1346 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 1347 longer maintained) and for old advisories. SOFA now does C. 1348 1349 Release 2013g - 2013-09-30 21:08:26 -0700 1350 1351 Changes affecting current and near-future time stamps 1352 1353 Morocco now observes DST from the last Sunday in March to the last 1354 Sunday in October, not April to September respectively. (Thanks 1355 to Steffen Thorsen.) 1356 1357 Changes affecting 'zic' 1358 1359 'zic' now runs on platforms that lack both hard links and symlinks. 1360 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 1361 Also, fix some bugs on platforms that lack hard links but have symlinks. 1362 1363 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 1364 to predict the far future, fixing a bug introduced in 2013e. 1365 1366 Changes affecting the build procedure 1367 1368 The 'leapseconds' file is again put into the tzdata tarball. 1369 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 1370 Matt Burgess and Ian Abbott.) The timestamps of these and other 1371 dependent files in tarballs are adjusted more consistently. 1372 1373 Changes affecting documentation and commentary 1374 1375 The README file is now part of the data tarball as well as the code. 1376 It now states that files are public domain unless otherwise specified. 1377 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 1378 Its details about the 1989 release moved to a place of honor near 1379 the end of NEWS. 1380 1381 1382 Release 2013f - 2013-09-24 23:37:36 -0700 1383 1384 Changes affecting near-future time stamps 1385 1386 Tocantins will very likely not observe DST starting this spring. 1387 (Thanks to Steffen Thorsen.) 1388 1389 Jordan will likely stay at UTC+3 indefinitely, and will not fall 1390 back this fall. 1391 1392 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 1393 1394 Changes affecting API 1395 1396 The types of the global variables 'timezone' and 'altzone' (if present) 1397 have been changed back to 'long'. This is required for 'timezone' 1398 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 1399 These variables were originally 'long' in the tz code, but were 1400 mistakenly changed to 'time_t' in 1987; nobody reported the 1401 incompatibility until now. The difference matters on x32, where 1402 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 1403 1404 Changes affecting the build procedure 1405 1406 Avoid long strings in leapseconds.awk to work around a mawk bug. 1407 (Thanks to Cyril Baurand.) 1408 1409 Changes affecting documentation and commentary 1410 1411 New file 'NEWS' that contains release notes like this one. 1412 1413 Paraguay's law does not specify DST transition time; 00:00 is customary. 1414 (Thanks to Waldemar Villamayor-Venialbo.) 1415 1416 Minor capitalization fixes. 1417 1418 Changes affecting version-control only 1419 1420 The experimental GitHub repository now contains annotated and 1421 signed tags for recent releases, e.g., '2013e' for Release 2013e. 1422 Releases are tagged starting with 2012e; earlier releases were 1423 done differently, and tags would either not have a simple name or 1424 not exactly match what was released. 1425 1426 'make set-timestamps' is now simpler and a bit more portable. 1427 1428 1429 Release 2013e - 2013-09-19 23:50:04 -0700 1430 1431 Changes affecting near-future time stamps 1432 1433 This year Fiji will start DST on October 27, not October 20. 1434 (Thanks to David Wheeler for the heads-up.) For now, guess that 1435 Fiji will continue to spring forward the Sunday before the fourth 1436 Monday in October. 1437 1438 Changes affecting current and future time zone abbreviations 1439 1440 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 1441 time zone abbreviations since 1932. (Thanks to George Ziegler, 1442 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 1443 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 1444 Asia/Makassar, and Asia/Pontianak. 1445 1446 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 1447 daylight saving time) for San Luis, Argentina since 2009. 1448 1449 Changes affecting Godthb time stamps after 2037 if version mismatch 1450 1451 Allow POSIX-like TZ strings where the transition time's hour can 1452 range from -167 through 167, instead of the POSIX-required 0 1453 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 1454 new Fiji rules. This is a more-compact way to represent 1455 far-future time stamps for America/Godthab, America/Santiago, 1456 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1457 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1458 this change. (Derived from a suggestion by Arthur David Olson.) 1459 1460 Allow POSIX-like TZ strings where daylight saving time is in 1461 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1462 Argentina Summer Time all year. This supports a more-compact way 1463 to represent the 2013d data for America/Argentina/San_Luis. 1464 Because of the change for San Luis noted above this change does not 1465 affect the current data. (Thanks to Andrew Main (Zefram) for 1466 suggestions that improved this change.) 1467 1468 Where these two TZ changes take effect, there is a minor extension 1469 to the tz file format in that it allows new values for the 1470 embedded TZ-format string, and the tz file format version number 1471 has therefore been increased from 2 to 3 as a precaution. 1472 Version-2-based client code should continue to work as before for 1473 all time stamps before 2038. Existing version-2-based client code 1474 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1475 files, and typically works in practice even for time stamps after 1476 2037; the only known exception is America/Godthab. 1477 1478 Changes affecting time stamps before 1970 1479 1480 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1481 some errors before 1947. 1482 1483 Some zones have been turned into links, when they differ from existing 1484 zones only in older data entries that were likely invented or that 1485 differ only in LMT or transitions from LMT. These changes affect 1486 only time stamps before 1943. The affected zones are: 1487 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1488 America/Grenada, America/Guadeloupe, America/Marigot, 1489 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1490 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1491 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1492 confirming that the old Europe/Vaduz zone was wrong and the new 1493 link is better for WWII-era times.) 1494 1495 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1496 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 1497 from 1890 to 1912. 1498 1499 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1500 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 1501 to Alois Treindl). 1502 1503 Change the date of the circa-1850 Zurich transition from 1849-09-12 1504 to 1853-07-16, overriding Shanks with data from Messerli about 1505 postal and telegraph time in Switzerland. 1506 1507 Changes affecting time zone abbreviations before 1970 1508 1509 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1510 as Jakarta was called Batavia back then. 1511 1512 Changes affecting API 1513 1514 The 'zic' command now outputs a dummy transition when far-future 1515 data can't be summarized using a TZ string, and uses a 402-year 1516 window rather than a 400-year window. For the current data, this 1517 affects only the Asia/Tehran file. It does not affect any of the 1518 time stamps that this file represents, so zdump outputs the same 1519 information as before. (Thanks to Andrew Main (Zefram).) 1520 1521 The 'date' command has a new '-r' option, which lets you specify 1522 the integer time to display, a la FreeBSD. 1523 1524 The 'tzselect' command has two new options '-c' and '-n', which lets you 1525 select a zone based on latitude and longitude. 1526 1527 The 'zic' command's '-v' option now warns about constructs that 1528 require the new version-3 binary file format. (Thanks to Arthur 1529 David Olson for the suggestion.) 1530 1531 Support for floating-point time_t has been removed. 1532 It was always dicey, and POSIX no longer requires it. 1533 (Thanks to Eric Blake for suggesting to the POSIX committee to 1534 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1535 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1536 bugs and elucidating some of the corners of the old floating-point 1537 implementation.) 1538 1539 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1540 changed back to the old practice of using 'long' to represent UT 1541 offsets. This had been inadvertently and mistakenly changed to 1542 'int_fast32_t'. (Thanks to Christos Zoulas.) 1543 1544 The code avoids undefined behavior on integer overflow in some 1545 more places, including gmtime, localtime, mktime and zdump. 1546 1547 Changes affecting the zdump utility 1548 1549 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1550 "UTC" does not make sense for time stamps that predate the introduction 1551 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1552 for clarifying UT vs UTC.) 1553 1554 Data changes affecting behavior of tzselect and similar programs 1555 1556 Country code BQ is now called the more-common name "Caribbean Netherlands" 1557 rather than the more-official "Bonaire, St Eustatius & Saba". 1558 1559 Remove from zone.tab the names America/Montreal, America/Shiprock, 1560 and Antarctica/South_Pole, as they are equivalent to existing 1561 same-country-code zones for post-1970 time stamps. The data entries for 1562 these names are unchanged, so the names continue to work as before. 1563 1564 Changes affecting code internals 1565 1566 zic -c now runs way faster on 64-bit hosts when given large numbers. 1567 1568 zic now uses vfprintf to avoid allocating and freeing some memory. 1569 1570 tzselect now computes the list of continents from the data, 1571 rather than have it hard-coded. 1572 1573 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1574 1575 Changes affecting the build procedure 1576 1577 The 'leapseconds' file is now generated automatically from a 1578 new file 'leap-seconds.list', which is a copy of 1579 <ftp://time.nist.gov/pub/leap-seconds.list>. 1580 A new source file 'leapseconds.awk' implements this. 1581 The goal is simplification of the future maintenance of 'leapseconds'. 1582 1583 When building the 'posix' or 'right' subdirectories, if the 1584 subdirectory would be a copy of the default subdirectory, it is 1585 now made a symbolic link if that is supported. This saves about 1586 2 MB of file system space. 1587 1588 The links America/Shiprock and Antarctica/South_Pole have been 1589 moved to the 'backward' file. This affects only nondefault builds 1590 that omit 'backward'. 1591 1592 Changes affecting version-control only 1593 1594 .gitignore now ignores 'date'. 1595 1596 Changes affecting documentation and commentary 1597 1598 Changes to the 'tzfile' man page 1599 1600 It now mentions that the binary file format may be extended in 1601 future versions by appending data. 1602 1603 It now refers to the 'zdump' and 'zic' man pages. 1604 1605 Changes to the 'zic' man page 1606 1607 It lists conditions that elicit a warning with '-v'. 1608 1609 It says that the behavior is unspecified when duplicate names 1610 are given, or if the source of one link is the target of another. 1611 1612 Its examples are updated to match the latest data. 1613 1614 The definition of white space has been clarified slightly. 1615 (Thanks to Michael Deckers.) 1616 1617 Changes to the 'Theory' file 1618 1619 There is a new section about the accuracy of the tz database, 1620 describing the many ways that errors can creep in, and 1621 explaining why so many of the pre-1970 time stamps are wrong or 1622 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1623 Wollman for discussions that contributed to this). 1624 1625 The 'Theory' file describes LMT better (this follows a 1626 suggestion by Guy Harris). 1627 1628 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1629 1630 It's mentioned that excluding 'backward' should not affect the 1631 other data, and it suggests at least one zone.tab name per 1632 inhabited country (thanks to Stephen Colebourne). 1633 1634 Some longstanding restrictions on names are documented, e.g., 1635 'America/New_York' precludes 'America/New_York/Bronx'. 1636 1637 It gives more reasons for the 1970 cutoff. 1638 1639 It now mentions which time_t variants are supported, such as 1640 signed integer time_t. (Thanks to Paul Goyette for reporting 1641 typos in an experimental version of this change.) 1642 1643 (Thanks to Philip Newton for correcting typos in these changes.) 1644 1645 Documentation and commentary is more careful to distinguish UT in 1646 general from UTC in particular. (Thanks to Steve Allen.) 1647 1648 Add a better source for the Zurich 1894 transition. 1649 (Thanks to Pierre-Yves Berger.) 1650 1651 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1652 1653 1654 Release 2013d - 2013-07-05 07:38:01 -0700 1655 1656 Changes affecting future time stamps: 1657 1658 Morocco's midsummer transitions this year are July 7 and August 10, 1659 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1660 1661 Israel now falls back on the last Sunday of October. 1662 (Thanks to Ephraim Silverberg.) 1663 1664 Changes affecting past time stamps: 1665 1666 Specify Jerusalem's location more precisely; this changes the pre-1880 1667 times by 2 s. 1668 1669 Changing affecting metadata only: 1670 1671 Fix typos in the entries for country codes BQ and SX. 1672 1673 Changes affecting code: 1674 1675 Rework the code to fix a bug with handling Australia/Macquarie on 1676 32-bit hosts (thanks to Arthur David Olson). 1677 1678 Port to platforms like NetBSD, where time_t can be wider than long. 1679 1680 Add support for testing time_t types other than the system's. 1681 Run 'make check_time_t_alternatives' to try this out. 1682 Currently, the tests fail for unsigned time_t; 1683 this should get fixed at some point. 1684 1685 Changes affecting documentation and commentary: 1686 1687 Deemphasize the significance of national borders. 1688 1689 Update the zdump man page. 1690 1691 Remove obsolete NOID comment (thanks to Denis Excoffier). 1692 1693 Update several URLs and comments in the web pages. 1694 1695 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1696 1697 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1698 1699 1700 Release 2013c - 2013-04-19 16:17:40 -0700 1701 1702 Changes affecting current and future time stamps: 1703 1704 Palestine observed DST starting March 29, 2013. (Thanks to 1705 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1706 with the predicted rules being the last Thursday in March at 24:00 1707 to the first Friday on or after September 21 at 01:00. 1708 1709 Assume that the recent change to Paraguay's DST rules is permanent, 1710 by moving the end of DST to the 4th Sunday in March every year. 1711 (Thanks to Carlos Ral Perasso.) 1712 1713 Changes affecting past time stamps: 1714 1715 Fix some historical data for Palestine to agree with that of 1716 timeanddate.com, as follows: 1717 1718 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1719 00:00 Apr 1. 1720 1721 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1722 02:00. 1723 1724 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1725 1726 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1727 1728 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1729 1730 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1731 1732 Fix times of habitation for Macquarie to agree with the Tasmania 1733 Parks & Wildlife Service history, which indicates that permanent 1734 habitation was 1899-1919 and 1948 on. 1735 1736 Changing affecting metadata only: 1737 1738 Macquarie Island is politically part of Australia, not Antarctica. 1739 (Thanks to Tobias Conradi.) 1740 1741 Sort Macquarie more-consistently with other parts of Australia. 1742 (Thanks to Tim Parenti.) 1743 1744 1745 Release 2013b - 2013-03-10 22:33:40 -0700 1746 1747 Changes affecting current and future time stamps: 1748 1749 Haiti uses US daylight-saving rules this year, and presumably future years. 1750 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1751 1752 Paraguay will end DST on March 24 this year. 1753 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1754 1755 Morocco does not observe DST during Ramadan; 1756 try to predict Ramadan in Morocco as best we can. 1757 (Thanks to Erik Homoet for the heads-up.) 1758 1759 Changes affecting commentary: 1760 1761 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1762 Update URL for Solaris. Mention Internet RFC 6557. 1763 Update Internet RFCs 2445->5545, 2822->5322. 1764 Switch from FTP to HTTP for Internet RFCs. 1765 1766 1767 Release 2013a - 2013-02-27 09:20:35 -0800 1768 1769 Change affecting binary data format: 1770 1771 The zone offset at the end of version-2-format zone files is now 1772 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1773 1774 Changes affecting current and future time stamps: 1775 1776 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1777 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1778 (Thanks to Steffen Thorsen and Robert Elz.) 1779 1780 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1781 (Thanks to Tobias Conradi and Arthur David Olson.) 1782 1783 Many changes affect historical time stamps before 1940. 1784 These were deduced from: Milne J. Civil time. Geogr J. 1899 1785 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1786 1787 Changes affecting the code: 1788 1789 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1790 the data). (Thanks to Arthur David Olson.) 1791 1792 Fix localtime bug when time_t is unsigned and data files were generated 1793 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1794 to Arthur David Olson for fixing.) 1795 1796 Allow the email address for bug reports to be set by the packager. 1797 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 1798 1799 Update HTML checking to be compatible with Ubuntu 12.10. 1800 1801 Check that files are a safe subset of ASCII. At some point we may 1802 relax this requirement to a safe subset of UTF-8. Without the 1803 check, some non-UTF-8 encodings were leaking into the distribution. 1804 1805 Commentary changes: 1806 1807 Restore a comment about copyright notices that was inadvertently deleted. 1808 (Thanks to Arthur David Olson.) 1809 1810 Improve the commentary about which districts observe what times 1811 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1812 1813 Add web page links to tz.js. 1814 1815 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1816 1817 1818 Release 2012j - 2012-11-12 18:34:49 -0800 1819 1820 Libya moved to CET this weekend, but with DST planned next year. 1821 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1822 1823 Signatures now have the extension .asc, not .sign, as that's more 1824 standard. (Thanks to Phil Pennock.) 1825 1826 The output of 'zdump --version', and of 'zic --version', now 1827 uses a format that is more typical for --version. 1828 (Thanks to Joseph S. Myers.) 1829 1830 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1831 now uses tz (a] iana.org rather than the old elsie address. 1832 1833 zic -v now complains about abbreviations that are less than 3 1834 or more than 6 characters, as per Posix. Formerly, it checked 1835 for abbreviations that were more than 3. 1836 1837 'make public' no longer puts its temporary directory under /tmp, 1838 and uses the just-built zic rather than the system zic. 1839 1840 Various fixes to documentation and commentary. 1841 1842 1843 Release 2012i - 2012-11-03 12:57:09 -0700 1844 1845 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1846 1847 Linker flags can now be specified via LDFLAGS. 1848 AWK now defaults to 'awk', not 'nawk'. 1849 The shell in tzselect now defaults to /bin/bash, but this can 1850 be overridden by specifying KSHELL. 1851 The main web page now mentions the unofficial GitHub repository. 1852 (Thanks to Mike Frysinger.) 1853 1854 Tarball signatures can now be built by running 'make signatures'. 1855 There are also new makefile rules 'tarballs', 'check_public', and 1856 separate makefile rules for each tarball and signature file. 1857 A few makefile rules are now more portable to strict POSIX. 1858 1859 The main web page now lists the canonical IANA URL. 1860 1861 1862 Release 2012h - 2012-10-26 22:49:10 -0700 1863 1864 Bahia no longer has DST. (Thanks to Kelley Cook.) 1865 1866 Tocantins has DST. (Thanks to Rodrigo Severo.) 1867 1868 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1869 1870 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1871 1872 Web page updates. 1873 1874 More C modernization, except that at Arthur David Olson's suggestion 1875 the instances of 'register' were kept. 1876 1877 1878 Release 2012g - 2012-10-17 20:59:45 -0700 1879 1880 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1881 1882 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1883 1884 Assume C89. 1885 1886 To attack the version-number problem, this release ships the file 1887 'Makefile' (which contains the release number) in both the tzcode and 1888 the tzdata tarballs. The two Makefiles are identical, and should be 1889 identical in any matching pair of tarballs, so it shouldn't matter 1890 which order you extract the tarballs. Perhaps we can come up with a 1891 better version-number scheme at some point; this scheme does have the 1892 virtue of not adding more files. 1893 1894 1895 Release 2012f - 2012-09-12 23:17:03 -0700 1896 1897 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1898 20 this year. (Thanks to Steffen Thorsen.) 1899 1900 1901 Release 2012e - 2012-08-02 20:44:55 -0700 1902 1903 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1904 (Thanks to Steffen Thorsen.) 1905 1906 * Use a single version number for both code and data. 1907 1908 * .gitignore: New file. 1909 1910 * Remove trailing white space. 1911 1912 1913 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1914 1915 Changes for Morocco's time stamps, which take effect in a couple of 1916 hours, along with infrastructure changes to accommodate how the tz 1917 code and data are released on IANA. 1918 1919 1920 Release data2012c - 2012-03-27 12:17:25 -0400 1921 1922 africa 1923 Summer time changes for Morocco (to start late April 2012) 1924 1925 asia 1926 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1927 1928 northamerica 1929 Haiti following US/Canada rules for 2012 (and we're assuming, 1930 for now anyway, for the future). 1931 1932 1933 Release 2012b - 2012-03-02 12:29:15 +0700 1934 1935 There is just one change to tzcode2012b (compared with 2012a): 1936 the Makefile that was accidentally included with 2012a has been 1937 replaced with the version that should have been there, which is 1938 identical with the previous version (from tzcode2011i). 1939 1940 There are just two changes in tzdata2012b compared with 2012a. 1941 1942 Most significantly, summer time in Cuba has been delayed 3 weeks 1943 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1944 date, as listed in 2012a) is just a little over a week away, this 1945 change is urgent. 1946 1947 Less importantly, an excess tab in one of the changes in zone.tab 1948 in 2012a has been removed. 1949 1950 1951 Release 2012a - 2012-03-01 18:28:10 +0700 1952 1953 The changes in tzcode2012a (compared to the previous version, 2011i) 1954 are entirely to the README and tz-art.htm and tz-link.htm files, if 1955 none of those concern you, you can ignore the code update. The changes 1956 reflect the changed addresses for the mailing list and the code and 1957 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1958 has been added to tz-link.htm). 1959 1960 In tzdata2012a (compared to the previous release, which was 2011n) 1961 the major changes are: 1962 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1963 Falkland Islands onto permanent summer time (we're assuming for the 1964 foreseeable future, though 2012 is all we're fairly certain of.) 1965 Armenia has abolished Summer Time. 1966 Tokelau jumped the International Date Line back last December 1967 (just the same as their near neighbour, Samoa). 1968 America/Creston is a new zone for a small area of British Columbia 1969 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1970 1971 Other minor changes are: 1972 Corrections to 1918 Canadian summer time end dates. 1973 Updated URL for UK time zone history (in comments) 1974 A few typos in Le Corre's list of free French place names (comments) 1975 1976 1977 Release data2011n - 2011-10-30 14:57:54 +0700 1978 1979 There are three changes of note - most urgently, Cuba (America/Havana) 1980 has extended summer time by two weeks, now to end on Nov 13, rather than 1981 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1982 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1983 all, and consequently that zone has been removed (again) and reinstated 1984 in the "backward" file as a link to Europe/Chisinau. And third, the 1985 end date for Fiji's summer time this summer was moved forward from the 1986 earlier planned Feb 26, to Jan 22. 1987 1988 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1989 (and the incorrect syntax that was in the 2011m version of that file 1990 is so fixed - it would have been fixed in a different way had this 1991 change not happened - that's the "missing" sccs version id). 1992 1993 1994 Release data2011m - 2011-10-24 21:42:16 +0700 1995 1996 In particular, the typos in comments in the data (2011-11-17 should have 1997 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1998 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1999 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 2000 Tim Parenti, and also Denys Gavrysh) 2001 2002 In addition, I added Europe/Tiraspol to zone.tab. 2003 2004 This time, all the files have new version numbers... (including the files 2005 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 2006 version numbers there...) 2007 2008 2009 Release data2011l - 2011-10-10 11:15:43 +0700 2010 2011 There are just 2 changes that cause different generated tzdata files from 2012 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 2013 is included, but commented out. Compared with the diff I sent out last week, 2014 this version also includes attributions for the sources for the changes 2015 (in much the same format as ado used, but the html tags have not been 2016 checked, verified, or used in any way at all, so if there are errors there, 2017 please let me know.) 2018 2019 2020 Release data2011k - 2011-09-20 17:54:03 -0400 2021 2022 [not summarized] 2023 2024 2025 Release data2011j - 2011-09-12 09:22:49 -0400 2026 2027 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 2028 Tanzania); there are also two spelling corrections to comments in 2029 the australasia file (with thanks to Christos Zoulas). 2030 2031 2032 Release 2011i - 2011-08-29 05:56:32 -0400 2033 2034 [not summarized] 2035 2036 2037 Release data2011h - 2011-06-15 18:41:48 -0400 2038 2039 Russia and Curaao changes 2040 2041 2042 Release 2011g - 2011-04-25 09:07:22 -0400 2043 2044 update the rules for Egypt to reflect its abandonment of DST this year 2045 2046 2047 Release 2011f - 2011-04-06 17:14:53 -0400 2048 2049 [not summarized] 2050 2051 2052 Release 2011e - 2011-03-31 16:04:38 -0400 2053 2054 Morocco, Chile, and tz-link changes 2055 2056 2057 Release 2011d - 2011-03-14 09:18:01 -0400 2058 2059 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 2060 2061 2062 Release 2011c - 2011-03-07 09:30:09 -0500 2063 2064 These do affect current time stamps in Chile and Annette Island, Canada. 2065 2066 2067 Release 2011b - 2011-02-07 08:44:50 -0500 2068 2069 [not summarized] 2070 2071 2072 Release 2011a - 2011-01-24 10:30:16 -0500 2073 2074 [not summarized] 2075 2076 2077 Release data2010o - 2010-11-01 09:18:23 -0400 2078 2079 change to the end of DST in Fiji in 2011 2080 2081 2082 Release 2010n - 2010-10-25 08:19:17 -0400 2083 2084 [not summarized] 2085 2086 2087 Release 2010m - 2010-09-27 09:24:48 -0400 2088 2089 Hong Kong, Vostok, and zic.c changes 2090 2091 2092 Release 2010l - 2010-08-16 06:57:25 -0400 2093 2094 [not summarized] 2095 2096 2097 Release 2010k - 2010-07-26 10:42:27 -0400 2098 2099 [not summarized] 2100 2101 2102 Release 2010j - 2010-05-10 09:07:48 -0400 2103 2104 changes for Baha de Banderas and for version naming 2105 2106 2107 Release data2010i - 2010-04-16 18:50:45 -0400 2108 2109 the end of DST in Morocco on 2010-08-08 2110 2111 2112 Release data2010h - 2010-04-05 09:58:56 -0400 2113 2114 [not summarized] 2115 2116 2117 Release data2010g - 2010-03-24 11:14:53 -0400 2118 2119 [not summarized] 2120 2121 2122 Release 2010f - 2010-03-22 09:45:46 -0400 2123 2124 [not summarized] 2125 2126 2127 Release data2010e - 2010-03-08 14:24:27 -0500 2128 2129 corrects the Dhaka bug found by Danvin Ruangchan 2130 2131 2132 Release data2010d - 2010-03-06 07:26:01 -0500 2133 2134 [not summarized] 2135 2136 2137 Release 2010c - 2010-03-01 09:20:58 -0500 2138 2139 changes including KRE's suggestion for earlier initialization of 2140 "goahead" and "goback" structure elements 2141 2142 2143 Release code2010a - 2010-02-16 10:40:04 -0500 2144 2145 [not summarized] 2146 2147 2148 Release data2010b - 2010-01-20 12:37:01 -0500 2149 2150 Mexico changes 2151 2152 2153 Release data2010a - 2010-01-18 08:30:04 -0500 2154 2155 changes to Dhaka 2156 2157 2158 Release data2009u - 2009-12-26 08:32:28 -0500 2159 2160 changes to DST in Bangladesh 2161 2162 2163 Release 2009t - 2009-12-21 13:24:27 -0500 2164 2165 [not summarized] 2166 2167 2168 Release data2009s - 2009-11-14 10:26:32 -0500 2169 2170 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 2171 2172 2173 Release 2009r - 2009-11-09 10:10:31 -0500 2174 2175 "antarctica" and "tz-link.htm" changes 2176 2177 2178 Release 2009q - 2009-11-02 09:12:40 -0500 2179 2180 with two corrections as reported by Eric Muller and Philip Newton 2181 2182 2183 Release data2009p - 2009-10-23 15:05:27 -0400 2184 2185 Argentina (including San Luis) changes (with the correction from 2186 Mariano Absatz) 2187 2188 2189 Release data2009o - 2009-10-14 16:49:38 -0400 2190 2191 Samoa (commentary only), Pakistan, and Bangladesh changes 2192 2193 2194 Release data2009n - 2009-09-22 15:13:38 -0400 2195 2196 added commentary for Argentina and a change to the end of DST in 2197 2009 in Pakistan 2198 2199 2200 Release data2009m - 2009-09-03 10:23:43 -0400 2201 2202 Samoa and Palestine changes 2203 2204 2205 Release data2009l - 2009-08-14 09:13:07 -0400 2206 2207 Samoa (comments only) and Egypt 2208 2209 2210 Release 2009k - 2009-07-20 09:46:08 -0400 2211 2212 [not summarized] 2213 2214 2215 Release data2009j - 2009-06-15 06:43:59 -0400 2216 2217 Bangladesh change (with a short turnaround since the DST change is 2218 impending) 2219 2220 2221 Release 2009i - 2009-06-08 09:21:22 -0400 2222 2223 updating for DST in Bangladesh this year 2224 2225 2226 Release 2009h - 2009-05-26 09:19:14 -0400 2227 2228 [not summarized] 2229 2230 2231 Release data2009g - 2009-04-20 16:34:07 -0400 2232 2233 Cairo 2234 2235 2236 Release data2009f - 2009-04-10 11:00:52 -0400 2237 2238 correct DST in Pakistan 2239 2240 2241 Release 2009e - 2009-04-06 09:08:11 -0400 2242 2243 [not summarized] 2244 2245 2246 Release 2009d - 2009-03-23 09:38:12 -0400 2247 2248 Morocco, Tunisia, Argentina, and American Astronomical Society changes 2249 2250 2251 Release data2009c - 2009-03-16 09:47:51 -0400 2252 2253 change to the start of Cuban DST 2254 2255 2256 Release 2009b - 2009-02-09 11:15:22 -0500 2257 2258 [not summarized] 2259 2260 2261 Release 2009a - 2009-01-21 10:09:39 -0500 2262 2263 [not summarized] 2264 2265 2266 Release data2008i - 2008-10-21 12:10:25 -0400 2267 2268 southamerica and zone.tab files, with Argentina DST rule changes and 2269 United States zone reordering and recommenting 2270 2271 2272 Release 2008h - 2008-10-13 07:33:56 -0400 2273 2274 [not summarized] 2275 2276 2277 Release 2008g - 2008-10-06 09:03:18 -0400 2278 2279 Fix a broken HTML anchor and update Brazil's DST transitions; 2280 there's also a slight reordering of information in tz-art.htm. 2281 2282 2283 Release data2008f - 2008-09-09 22:33:26 -0400 2284 2285 [not summarized] 2286 2287 2288 Release 2008e - 2008-07-28 14:11:17 -0400 2289 2290 changes by Arthur David Olson and Jesper Nrgaard Welen 2291 2292 2293 Release data2008d - 2008-07-07 09:51:38 -0400 2294 2295 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 2296 2297 2298 Release data2008c - 2008-05-19 17:48:03 -0400 2299 2300 Pakistan, Morocco, and Mongolia 2301 2302 2303 Release data2008b - 2008-03-24 08:30:59 -0400 2304 2305 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 2306 link provided 2307 2308 2309 Release 2008a - 2008-03-08 05:42:16 -0500 2310 2311 [not summarized] 2312 2313 2314 Release 2007k - 2007-12-31 10:25:22 -0500 2315 2316 most importantly, changes to the "southamerica" file based on 2317 Argentina's readoption of daylight saving time 2318 2319 2320 Release 2007j - 2007-12-03 09:51:01 -0500 2321 2322 1. eliminate the "P" (parameter) macro; 2323 2324 2. the "noncontroversial" changes circulated on the time zone 2325 mailing list (less the changes to "logwtmp.c"); 2326 2327 3. eliminate "too many transition" errors when "min" is used in time 2328 zone rules; 2329 2330 4. changes by Paul Eggert (including updated information for Venezuela). 2331 2332 2333 Release data2007i - 2007-10-30 10:28:11 -0400 2334 2335 changes for Cuba and Syria 2336 2337 2338 Release 2007h - 2007-10-01 10:05:51 -0400 2339 2340 changes by Paul Eggert, as well as an updated link to the ICU 2341 project in tz-link.htm 2342 2343 2344 Release 2007g - 2007-08-20 10:47:59 -0400 2345 2346 changes by Paul Eggert 2347 2348 The "leapseconds" file has been updated to incorporate the most 2349 recent International Earth Rotation and Reference Systems Service 2350 (IERS) bulletin. 2351 2352 There's an addition to tz-art.htm regarding the television show "Medium". 2353 2354 2355 Release 2007f - 2007-05-07 10:46:46 -0400 2356 2357 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 2358 Zealand) 2359 2360 changes to zic.c to allow hour values greater than 24 (along with 2361 Paul's improved time value overflow checking) 2362 2363 2364 Release 2007e - 2007-04-02 10:11:52 -0400 2365 2366 Syria and Honduras changes by Paul Eggert 2367 2368 zic.c variable renaming changes by Arthur David Olson 2369 2370 2371 Release 2007d - 2007-03-20 08:48:30 -0400 2372 2373 changes by Paul Eggert 2374 2375 the elimination of white space at the ends of lines 2376 2377 2378 Release 2007c - 2007-02-26 09:09:37 -0500 2379 2380 changes by Paul Eggert 2381 2382 2383 Release 2007b - 2007-02-12 09:34:20 -0500 2384 2385 Paul Eggert's proposed change to the quotation handling logic in zic.c. 2386 2387 changes to the commentary in "leapseconds" reflecting the IERS 2388 announcement that there is to be no positive leap second at the end 2389 of June 2007. 2390 2391 2392 Release 2007a - 2007-01-08 12:28:29 -0500 2393 2394 changes by Paul Eggert 2395 2396 Derick Rethan's Asmara change 2397 2398 Oscar van Vlijmen's Easter Island local mean time change 2399 2400 symbolic link changes 2401 2402 2403 Release 2006p - 2006-11-27 08:54:27 -0500 2404 2405 changes by Paul Eggert 2406 2407 2408 Release 2006o - 2006-11-06 09:18:07 -0500 2409 2410 changes by Paul Eggert 2411 2412 2413 Release 2006n - 2006-10-10 11:32:06 -0400 2414 2415 changes by Paul Eggert 2416 2417 2418 Release 2006m - 2006-10-02 15:32:35 -0400 2419 2420 changes for Uruguay, Palestine, and Egypt by Paul Eggert 2421 2422 (minimalist) changes to zic.8 to clarify "until" information 2423 2424 2425 Release data2006l - 2006-09-18 12:58:11 -0400 2426 2427 Paul's best-effort work on this coming weekend's Egypt time change 2428 2429 2430 Release 2006k - 2006-08-28 12:19:09 -0400 2431 2432 changes by Paul Eggert 2433 2434 2435 Release 2006j - 2006-08-21 09:56:32 -0400 2436 2437 changes by Paul Eggert 2438 2439 2440 Release code2006i - 2006-08-07 12:30:55 -0400 2441 2442 localtime.c fixes 2443 2444 Ken Pizzini's conversion script 2445 2446 2447 Release code2006h - 2006-07-24 09:19:37 -0400 2448 2449 adds public domain notices to four files 2450 2451 includes a fix for transition times being off by a second 2452 2453 adds a new recording to the "arts" file (information courtesy Colin Bowern) 2454 2455 2456 Release 2006g - 2006-05-08 17:18:09 -0400 2457 2458 northamerica changes by Paul Eggert 2459 2460 2461 Release 2006f - 2006-05-01 11:46:00 -0400 2462 2463 a missing version number problem is fixed (with thanks to Bradley 2464 White for catching the problem) 2465 2466 2467 Release 2006d - 2006-04-17 14:33:43 -0400 2468 2469 changes by Paul Eggert 2470 2471 added new items to tz-arts.htm that were found by Paul 2472 2473 2474 Release 2006c - 2006-04-03 10:09:32 -0400 2475 2476 two sets of data changes by Paul Eggert 2477 2478 a fencepost error fix in zic.c 2479 2480 changes to zic.c and the "europe" file to minimize differences 2481 between output produced by the old 32-bit zic and the new 64-bit 2482 version 2483 2484 2485 Release 2006b - 2006-02-20 10:08:18 -0500 2486 [tz32code2006b + tz64code2006b + tzdata2006b] 2487 2488 64-bit code 2489 2490 All SCCS IDs were bumped to "8.1" for this release. 2491 2492 2493 Release 2006a - 2006-01-30 08:59:31 -0500 2494 2495 changes by Paul Eggert (in particular, Indiana time zone moves) 2496 2497 an addition to the zic manual page to describe how special-case 2498 transitions are handled 2499 2500 2501 Release 2005r - 2005-12-27 09:27:13 -0500 2502 2503 Canadian changes by Paul Eggert 2504 2505 They also add "<pre>" directives to time zone data files and reflect 2506 changes to warning message logic in "zdump.c" (but with calls to 2507 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2508 2509 2510 Release 2005q - 2005-12-13 09:17:09 -0500 2511 2512 Nothing earth-shaking here: 2513 1. Electronic mail addresses have been removed. 2514 2. Casts of the return value of exit have been removed. 2515 3. Casts of the argument of is.* macros have been added. 2516 4. Indentation in one section of zic.c has been fixed. 2517 5. References to dead URLs in the data files have been dealt with. 2518 2519 2520 Release 2005p - 2005-12-05 10:30:53 -0500 2521 2522 "systemv", "tz-link.htm", and "zdump.c" changes 2523 (less the casts of arguments to the is* macros) 2524 2525 2526 Release 2005o - 2005-11-28 10:55:26 -0500 2527 2528 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2529 2530 zdump.c lint fixes by Arthur David Olson 2531 2532 2533 Release 2005n - 2005-10-03 09:44:09 -0400 2534 2535 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2536 et al. changes) 2537 2538 2539 Release 2005m - 2005-08-29 12:15:40 -0400 2540 2541 changes by Paul Eggert (with a small tweak to the tz-art change) 2542 2543 a declaration of an unused variable has been removed from zdump.c 2544 2545 2546 Release 2005l - 2005-08-22 12:06:39 -0400 2547 2548 changes by Paul Eggert 2549 2550 overflow/underflow checks by Arthur David Olson, minus changes to 2551 the "Theory" file about the pending addition of 64-bit data (I grow 2552 less confident of the changes being accepted with each passing day, 2553 and the changes no longer increase the data files nine-fold--there's 2554 less than a doubling in size by my local Sun's reckoning) 2555 2556 2557 Release 2005k - 2005-07-14 14:14:24 -0400 2558 2559 The "leapseconds" file has been edited to reflect the recently 2560 announced leap second at the end of 2005. 2561 2562 I've also deleted electronic mail addresses from the files as an 2563 anti-spam measure. 2564 2565 2566 Release 2005j - 2005-06-13 14:34:13 -0400 2567 2568 These reflect changes to limit the length of time zone abbreviations 2569 and the characters used in those abbreviations. 2570 2571 There are also changes to handle POSIX-style "quoted" time zone 2572 environment variables. 2573 2574 The changes were circulated on the time zone mailing list; the only 2575 change since then was the removal of a couple of minimum-length of 2576 abbreviation checks. 2577 2578 2579 Release data2005i - 2005-04-21 15:04:16 -0400 2580 2581 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2582 2583 2584 Release 2005h - 2005-04-04 11:24:47 -0400 2585 2586 changes by Paul Eggert 2587 2588 minor changes to Makefile and zdump.c to produce more useful output 2589 when doing a "make typecheck" 2590 2591 2592 Release 2005g - 2005-03-14 10:11:21 -0500 2593 2594 changes by Paul Eggert (a change to current DST rules in Uruguay and 2595 an update to a link to time zone software) 2596 2597 2598 Release 2005f - 2005-03-01 08:45:32 -0500 2599 2600 data and documentation changes by Paul Eggert 2601 2602 2603 Release 2005e - 2005-02-10 15:59:44 -0500 2604 2605 [not summarized] 2606 2607 2608 Release code2005d - 2005-01-31 09:21:47 -0500 2609 2610 make zic complain about links to links if the -v flag is used 2611 2612 have "make public" do more code checking 2613 2614 add an include to "localtime.c" for the benefit of gcc systems 2615 2616 2617 Release 2005c - 2005-01-17 18:36:29 -0500 2618 2619 get better results when mktime runs on a system where time_t is double 2620 2621 changes to the data files (most importantly to Paraguay) 2622 2623 2624 Release 2005b - 2005-01-10 09:19:54 -0500 2625 2626 Get localtime and gmtime working on systems with exotic time_t types. 2627 2628 Update the leap second commentary in the "leapseconds" file. 2629 2630 2631 Release 2005a - 2005-01-01 13:13:44 -0500 2632 2633 [not summarized] 2634 2635 2636 Release code2004i - 2004-12-14 13:42:58 -0500 2637 2638 Deal with systems where time_t is unsigned. 2639 2640 2641 Release code2004h - 2004-12-07 11:40:18 -0500 2642 2643 64-bit-time_t changes 2644 2645 2646 Release 2004g - 2004-11-02 09:06:01 -0500 2647 2648 update to Cuba (taking effect this weekend) 2649 2650 other changes by Paul Eggert 2651 2652 correction of the spelling of Oslo 2653 2654 changed versions of difftime.c and private.h 2655 2656 2657 Release code2004f - 2004-10-21 10:25:22 -0400 2658 2659 Cope with wide-ranging tm_year values. 2660 2661 2662 Release 2004e - 2004-10-11 14:47:21 -0400 2663 2664 Brazil/Argentina/Israel changes by Paul Eggert 2665 2666 changes to tz-link.htm by Paul 2667 2668 one small fix to Makefile 2669 2670 2671 Release 2004d - 2004-09-22 08:27:29 -0400 2672 2673 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2674 2675 2676 Release 2004c - 2004-08-11 12:06:26 -0400 2677 2678 asctime-related changes 2679 2680 (variants of) some of the documentation changes suggested by Paul Eggert 2681 2682 2683 Release 2004b - 2004-07-19 14:33:35 -0400 2684 2685 data changes by Paul Eggert - most importantly, updates for Argentina 2686 2687 2688 Release 2004a - 2004-05-27 12:00:47 -0400 2689 2690 changes by Paul Eggert 2691 2692 Handle DST transitions that occur at the end of a month in some 2693 years but at the start of the following month in other years. 2694 2695 Add a copy of the correspondence that's the basis for claims about 2696 DST in the Navajo Nation. 2697 2698 2699 Release 2003e - 2003-12-15 09:36:47 -0500 2700 2701 changes by Arthur David Olson (primarily code changes) 2702 2703 changes by Paul Eggert (primarily data changes) 2704 2705 minor changes to "Makefile" and "northamerica" (in the latter case, 2706 optimization of the "Toronto" rules) 2707 2708 2709 Release 2003d - 2003-10-06 09:34:44 -0400 2710 2711 changes by Paul Eggert 2712 2713 2714 Release 2003c - 2003-09-16 10:47:05 -0400 2715 2716 Fix bad returns in zic.c's inleap function. 2717 Thanks to Bradley White for catching the problem! 2718 2719 2720 Release 2003b - 2003-09-16 07:13:44 -0400 2721 2722 Add a "--version" option (and documentation) to the zic and zdump commands. 2723 2724 changes to overflow/underflow checking in zic 2725 2726 a localtime typo fix. 2727 2728 Update the leapseconds and tz-art.htm files. 2729 2730 2731 Release 2003a - 2003-03-24 09:30:54 -0500 2732 2733 changes by Paul Eggert 2734 2735 a few additions and modifications to the tz-art.htm file 2736 2737 2738 Release 2002d - 2002-10-15 13:12:42 -0400 2739 2740 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2741 2742 There's also a new time zone quote in "tz-art.htm". 2743 2744 2745 Release 2002c - 2002-04-04 11:55:20 -0500 2746 2747 changes by Paul Eggert 2748 2749 Change zic.c to avoid creating symlinks to files that don't exist. 2750 2751 2752 Release 2002b - 2002-01-28 12:56:03 -0500 2753 2754 [These change notes are for Release 2002a, which was corrupted. 2755 2002b was a corrected version of 2002a.] 2756 2757 changes by Paul Eggert 2758 2759 Update the "leapseconds" file to note that there'll be no leap 2760 second at the end of June, 2002. 2761 2762 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2763 2764 Change to "difftime.c" to avoid sizeof problems. 2765 2766 2767 Release 2001d - 2001-10-09 13:31:32 -0400 2768 2769 changes by Paul Eggert 2770 2771 2772 Release 2001c - 2001-06-05 13:59:55 -0400 2773 2774 changes by Paul Eggert and Andrew Brown 2775 2776 2777 Release 2001b - 2001-04-05 16:44:38 -0400 2778 2779 changes by Paul Eggert (modulo jnorgard's typo fix) 2780 2781 tz-art.htm has been HTMLified. 2782 2783 2784 Release 2001a - 2001-03-13 12:57:44 -0500 2785 2786 changes by Paul Eggert 2787 2788 An addition to the "leapseconds" file: comments with the text of the 2789 latest IERS leap second notice. 2790 2791 Trailing white space has been removed from data file lines, and 2792 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2793 converted to tabs. 2794 2795 2796 Release 2000h - 2000-12-14 15:33:38 -0500 2797 2798 changes by Paul Eggert 2799 2800 one typo fix in the "art" file 2801 2802 With providence, this is the last update of the millennium. 2803 2804 2805 Release 2000g - 2000-10-10 11:35:22 -0400 2806 2807 changes by Paul Eggert 2808 2809 correction of John Mackin's name submitted by Robert Elz 2810 2811 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2812 Emmy Awards broadcast. 2813 2814 2815 Release 2000f - 2000-08-10 09:31:58 -0400 2816 2817 changes by Paul Eggert 2818 2819 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2820 2821 Error checking and messages in the "yearistype" script have been 2822 improved. 2823 2824 2825 Release 2000e - 2000-07-31 09:27:54 -0400 2826 2827 data changes by Paul Eggert 2828 2829 a change to the default value of the defined constant HAVE_STRERROR 2830 2831 the addition of a Dave Barry quote on DST to the tz-arts file 2832 2833 2834 Release 2000d - 2000-04-20 15:43:04 -0400 2835 2836 changes to the documentation and code of strftime for C99 conformance 2837 2838 a bug fix for date.c 2839 2840 These are based on (though modified from) changes by Paul Eggert. 2841 2842 2843 Release 2000c - 2000-03-04 10:31:43 -0500 2844 2845 changes by Paul Eggert 2846 2847 2848 Release 2000b - 2000-02-21 12:16:29 -0500 2849 2850 changes by Paul Eggert and Joseph Myers 2851 2852 modest tweaks to the tz-art.htm and tz-link.htm files 2853 2854 2855 Release 2000a - 2000-01-18 09:21:26 -0500 2856 2857 changes by Paul Eggert 2858 2859 The two hypertext documents have also been renamed. 2860 2861 2862 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2863 2864 Paul Eggert's changes 2865 2866 additions to the "zic" manual page and the "Arts.htm" file 2867 2868 2869 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2870 2871 [not summarized] 2872 2873 2874 Release data1999h - 1999-10-07 03:50:29 -0400 2875 2876 changes by Paul Eggert to "europe" (most importantly, fixing 2877 Lithuania and Estonia) 2878 2879 2880 Release 1999g - 1999-09-28 11:06:18 -0400 2881 2882 data changes by Paul Eggert (most importantly, the change for 2883 Lebanon that buys correctness for this coming Sunday) 2884 2885 The "code" file contains changes to "Makefile" and "checktab.awk" to 2886 allow better checking of time zone files before they are published. 2887 2888 2889 Release 1999f - 1999-09-23 09:48:14 -0400 2890 2891 changes by Arthur David Olson and Paul Eggert 2892 2893 2894 Release 1999e - 1999-08-17 15:20:54 -0400 2895 2896 changes circulated by Paul Eggert, although the change to handling 2897 of DST-specifying time zone names has been commented out for now 2898 (search for "XXX" in "localtime.c" for details). These files also 2899 do not make any changes to the start of DST in Brazil. 2900 2901 In addition to Paul's changes, there are updates to "Arts.htm" and 2902 cleanups of URLs. 2903 2904 2905 Release 1999d - 1999-03-30 11:31:07 -0500 2906 2907 changes by Paul Eggert 2908 2909 The Makefile's "make public" rule has also been changed to do a test 2910 compile of each individual time zone data file (which should help 2911 avoid problems such as the one we had with Nicosia). 2912 2913 2914 Release 1999c - 1999-03-25 09:47:47 -0500 2915 2916 changes by Paul Eggert, most importantly the change for Chile. 2917 2918 2919 Release 1999b - 1999-02-01 17:51:44 -0500 2920 2921 changes by Paul Eggert 2922 2923 code changes (suggested by Mani Varadarajan, mani at be.com) for 2924 correct handling of symbolic links when building using a relative directory 2925 2926 code changes to generate correct messages for failed links 2927 2928 updates to the URLs in Arts.htm 2929 2930 2931 Release 1999a - 1999-01-19 16:20:29 -0500 2932 2933 error message internationalizations and corrections in zic.c and 2934 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2935 to whom thanks!) 2936 2937 2938 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2939 2940 changes for Brazil, Chile, and Germany 2941 2942 support for use of "24:00" in the input files for the time zone compiler 2943 2944 2945 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2946 2947 changes by Paul Eggert 2948 2949 correction to a define in the "private.h" file 2950 2951 2952 Release data1998g - 1998-08-11 03:28:35 -0000 2953 [tzdata1998g.tar.gz is missing!] 2954 2955 Lithuanian change provided by mgedmin at pub.osf.it 2956 2957 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2958 "backward") to ensure that the GMT file is created even where folks 2959 don't want the "backward" links (as suggested by Paul Eggert). 2960 2961 2962 Release data1998f - 1998-07-20 13:50:00 -0000 2963 [tzdata1998f.tar.gz is missing!] 2964 2965 Update the "leapseconds" file to include the newly-announced 2966 insertion at the end of 1998. 2967 2968 2969 Release code1998f - 1998-06-01 10:18:31 -0400 2970 2971 addition to localtime.c by Guy Harris 2972 2973 2974 Release 1998e - 1998-05-28 09:56:26 -0400 2975 2976 The Makefile is changed to produce zoneinfo-posix rather than 2977 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2978 zoneinfo/right. 2979 2980 data changes by Paul Eggert 2981 2982 changes from Guy Harris to provide asctime_r and ctime_r 2983 2984 A usno1998 file (substantially identical to usno1997) has been added. 2985 2986 2987 Release 1998d - 1998-05-14 11:58:34 -0400 2988 2989 changes to comments (in particular, elimination of references to CIA maps). 2990 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2991 where changes occur. 2992 2993 2994 Release 1998c - 1998-02-28 12:32:26 -0500 2995 2996 changes by Paul Eggert (save the "French correction," on which I'll 2997 wait for the dust to settle) 2998 2999 symlink changes 3000 3001 changes and additions to Arts.htm 3002 3003 3004 Release 1998b - 1998-01-17 14:31:51 -0500 3005 3006 URL cleanups and additions 3007 3008 3009 Release 1998a - 1998-01-13 12:37:35 -0500 3010 3011 changes by Paul Eggert 3012 3013 3014 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 3015 3016 changes by Paul Eggert, with minor modifications from Arthur David 3017 Olson to make the files more browser friendly 3018 3019 3020 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 3021 3022 minor changes to put "TZif" at the start of each time zone information file 3023 3024 a rule has also been added to the Makefile so you can 3025 make zones 3026 to just recompile the zone information files (rather than doing a 3027 full "make install" with its other effects). 3028 3029 3030 Release data1997i - 1997-10-07 08:45:38 -0400 3031 3032 changes to Africa by Paul Eggert 3033 3034 3035 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 3036 3037 corrections for Uruguay (and other locations) 3038 3039 Arthur David Olson's simple-minded fix allowing mktime to both 3040 correctly handle leap seconds and correctly handle tm_sec values 3041 upon which arithmetic has been performed. 3042 3043 3044 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 3045 3046 Paul Eggert's updates 3047 3048 a small change to a function prototype; 3049 3050 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 3051 include information on Around the World in Eighty Days. 3052 3053 3054 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 3055 3056 fixes to zic's error handling 3057 3058 changes inspired by the item circulated on Slovenia 3059 3060 The description of Web resources has been HTMLified for browsing 3061 convenience. 3062 3063 A new piece of tz-related music has been added to the "Music" file. 3064 3065 3066 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 3067 3068 Paul Eggert's latest suggestions 3069 3070 3071 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 3072 3073 changes to "zic.c" to correct performance of the "-s" option 3074 3075 a new file "usno1997" 3076 3077 3078 Release data1997c - 1997-03-04 09:58:18 -0500 3079 3080 changes in Israel 3081 3082 3083 Release 1997b - 1997-02-27 18:34:19 -0500 3084 3085 The data file incorporates the 1997 leap second. 3086 3087 The code file incorporates Arthur David Olson's take on the 3088 zic/multiprocessor/directory-creation situation. 3089 3090 3091 Release 1997a - 1997-01-21 09:11:10 -0500 3092 3093 Paul Eggert's Antarctica (and other changes) 3094 3095 Arthur David Olson finessed the "getopt" issue by checking against 3096 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 3097 is returned while SunOS 5.5's manual says EOF is returned). 3098 3099 3100 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 3101 3102 Paul Eggert's latest changes 3103 3104 3105 Release code1996n - 1996-12-16 09:42:02 -0500 3106 3107 link snapping fix from Bruce Evans (via Garrett Wollman) 3108 3109 3110 Release data1996m - 1996-11-24 02:37:34 -0000 3111 [tzdata1996m.tar.gz is missing!] 3112 3113 Paul Eggert's batch of changes 3114 3115 3116 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 3117 3118 No functional changes here; the files have simply been changed to 3119 make more use of ISO style dates in comments. The names of the above 3120 files now include the year in full. 3121 3122 3123 Release code96l - 1996-09-08 17:12:20 -0400 3124 3125 tzcode96k was missing a couple of pieces. 3126 3127 3128 Release 96k - 1996-09-08 16:06:22 -0400 3129 3130 the latest round of changes from Paul Eggert 3131 3132 the recent Year 2000 material 3133 3134 3135 Release code96j - 1996-07-30 13:18:53 -0400 3136 3137 Set sp->typecnt as suggested by Timothy Patrick Murphy. 3138 3139 3140 Release code96i - 1996-07-27 20:11:35 -0400 3141 3142 Paul's suggested patch for strftime %V week numbers 3143 3144 3145 Release data96i - 1996-07-01 18:13:04 -0400 3146 3147 "northamerica" and "europe" changes by Paul Eggert 3148 3149 3150 Release code96h - 1996-06-05 08:02:21 -0400 3151 3152 fix for handling transitions specified in Universal Time 3153 3154 Some "public domain" notices have also been added. 3155 3156 3157 Release code96g - 1996-05-16 14:00:26 -0400 3158 3159 fix for the simultaneous-DST-and-zone-change challenge 3160 3161 3162 Release data96h - 1996-05-09 17:40:51 -0400 3163 3164 changes by Paul Eggert 3165 3166 3167 Release code96f-data96g - 1996-05-03 03:09:59 -0000 3168 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 3169 3170 The changes get us some of the way to fixing the problems noted in Paul 3171 Eggert's letter yesterday (in addition to a few others). The approach 3172 has been to make zic a bit smarter about figuring out what time zone 3173 abbreviations apply just after the time specified in the "UNTIL" part 3174 of a zone line. Putting the smarts in zic means avoiding having 3175 transition times show up in both "Zone" lines and "Rule" lines, which 3176 in turn avoids multiple transition time entries in time zone files. 3177 (This also makes the zic input files such as "europe" a bit shorter and 3178 should ease maintenance.) 3179 3180 3181 Release data96f - 1996-04-19 19:20:03 -0000 3182 [tzdata96f.tar.gz is missing!] 3183 3184 The only changes are to the "northamerica" file; the time zone 3185 abbreviation for Denver is corrected to MST (and MDT), and the 3186 comments for Mexico have been updated. 3187 3188 3189 Release data96e - 1996-03-19 17:37:26 -0500 3190 3191 Proposals by Paul Eggert, in particular the Portugal change that 3192 comes into play at the end of this month. 3193 3194 3195 Release data96d - 1996-03-18 20:49:39 -0500 3196 3197 [not summarized] 3198 3199 3200 Release code96e - 1996-02-29 15:43:27 -0000 3201 [tzcode96e.tar.gz is missing!] 3202 3203 internationalization changes and the fix to the documentation for strftime 3204 3205 3206 Release code96d-data96c - 1996-02-12 11:05:27 -0500 3207 3208 The "code" file simply updates Bob Kridle's electronic address. 3209 3210 The "data" file updates rules for Mexico. 3211 3212 3213 Release data96b - 1996-01-27 15:44:42 -0500 3214 3215 Kiribati change 3216 3217 3218 Release code96c - 1996-01-16 16:58:15 -0500 3219 3220 leap-year streamlining and binary-search changes 3221 3222 fix to newctime.3 3223 3224 3225 Release code96b - 1996-01-10 20:42:39 -0500 3226 3227 fixes and enhancements from Paul Eggert, including code that 3228 emulates the behavior of recent versions of the SunOS "date" 3229 command. 3230 3231 3232 Release 96a - 1996-01-06 09:08:24 -0500 3233 3234 Israel updates 3235 3236 fixes to strftime.c for correct ISO 8601 week number generation, 3237 plus support for two new formats ('G' and 'g') to give ISO 8601 year 3238 numbers (which are not necessarily the same as calendar year numbers) 3239 3240 3241 Release code95i-data95m - 1995-12-21 12:46:47 -0500 3242 3243 The latest revisions from Paul Eggert are included, the usno1995 3244 file has been updated, and a new file ("WWW") covering useful URLs 3245 has been added. 3246 3247 3248 Release code95h-data95l - 1995-12-19 18:10:12 -0500 3249 3250 A simplification of a macro definition, a change to data for Sudan, 3251 and (for last minute shoppers) notes in the "Music" file on the CD 3252 "Old Man Time". 3253 3254 3255 Release code95g-data95k - 1995-10-30 10:32:47 -0500 3256 3257 (slightly reformatted) 8-bit-clean proposed patch 3258 3259 minor patch: US/Eastern -> America/New_York 3260 3261 snapshot of the USNO's latest data ("usno1995") 3262 3263 some other minor cleanups 3264 3265 3266 Release code95f-data95j - 1995-10-28 21:01:34 -0000 3267 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 3268 3269 European cleanups 3270 3271 support for 64-bit time_t's 3272 3273 optimization in localtime.c 3274 3275 3276 Release code95e - 1995-10-13 13:23:57 -0400 3277 3278 the mktime change to scan from future to past when trying to find time zone 3279 offsets 3280 3281 3282 Release data95i - 1995-09-26 10:43:26 -0400 3283 3284 For Canada/Central, guess that the Sun customer's "one week too 3285 early" was just a approximation, and the true error is one month 3286 too early. This is consistent with the rest of Canada. 3287 3288 3289 Release data95h - 1995-09-21 11:26:48 -0400 3290 3291 latest changes from Paul Eggert 3292 3293 3294 Release code95d - 1995-09-14 11:14:45 -0400 3295 3296 the addition of a "Music" file, which documents four recorded 3297 versions of the tune "Save That Time". 3298 3299 3300 Release data95g - 1995-09-01 17:21:36 -0400 3301 3302 "yearistype" correction 3303 3304 3305 Release data95f - 1995-08-28 20:46:56 -0400 3306 3307 Paul Eggert's change to the australasia file 3308 3309 3310 Release data95e - 1995-07-08 18:02:34 -0400 3311 3312 The only change is a leap second at the end of this year. 3313 Thanks to Bradley White for forwarding news on the leap second. 3314 3315 3316 Release data95d - 1995-07-03 13:26:22 -0400 3317 3318 Paul Eggert's changes 3319 3320 3321 Release data95c - 1995-07-02 19:19:28 -0400 3322 3323 changes to "asia", "backward", "europe", and "southamerica" 3324 (read: northamericacentrics need not apply) 3325 3326 3327 Release code95c - 1995-03-13 14:00:46 -0500 3328 3329 one-line fix for sign extension problems in detzcode 3330 3331 3332 Release 95b - 1995-03-04 11:22:38 -0500 3333 3334 Minor changes in both: 3335 3336 The "code" file contains a workaround for the lack of "unistd.h" in 3337 Microsoft C++ version 7. 3338 3339 The "data" file contains a fixed "Link" for America/Shiprock. 3340 3341 3342 Release 94h - 1994-12-10 12:51:14 -0500 3343 3344 The files: 3345 3346 * incorporate the changes to "zdump" and "date" to make changes to 3347 the "TZ" environment variable permanent; 3348 3349 * incorporate the table changes by Paul Eggert; 3350 3351 * include (and document) support for universal time specifications in 3352 data files - but do not (yet) include use of this feature in the 3353 data files. 3354 3355 Think of this as "TZ Classic" - the software has been set up not to break if 3356 universal time shows up in its input, and data entries have been 3357 left as is so as not to break existing implementations. 3358 3359 3360 Release data94f - 1994-08-20 12:56:09 -0400 3361 3362 (with thanks!) the latest data updates from Paul Eggert 3363 3364 3365 Release data94e - 1994-06-04 13:13:53 -0400 3366 3367 [not summarized] 3368 3369 3370 Release code94g - 1994-05-05 12:14:07 -0400 3371 3372 fix missing "optind.c" and a reference to it in the Makefile 3373 3374 3375 Release code94f - 1994-05-05 13:00:33 -0000 3376 [tzcode94f.tar.gz is missing!] 3377 3378 changes to avoid overflow in difftime, as well as changes to cope 3379 with the 52/53 challenge in strftime 3380 3381 3382 Release code94e - 1994-03-30 23:32:59 -0500 3383 3384 change for the benefit of PCTS 3385 3386 3387 Release 94d - 1994-02-24 15:42:25 -0500 3388 3389 Avoid clashes with POSIX semantics for zones such as GMT+4. 3390 3391 Some other very minor housekeeping is also present. 3392 3393 3394 Release code94c - 1994-02-10 08:52:40 -0500 3395 3396 Fix bug where mkdirs was broken unless you compile with 3397 -fwritable-strings (which is generally losing to do). 3398 3399 3400 Release 94b - 1994-02-07 10:04:33 -0500 3401 3402 work by Paul Eggert who notes: 3403 3404 I found another book of time zone histories by E W Whitman; it's not 3405 as extensive as Shanks but has a few goodies of its own. I used it 3406 to update the tables. I also fixed some more as a result of 3407 correspondence with Adam David and Peter Ilieve, and move some stray 3408 links from 'europe' to 'backward'. I corrected some scanning errors 3409 in usno1989. 3410 3411 As far as the code goes, I fixed zic to allow years in the range 3412 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 3413 And I cleaned up the zic documentation a little bit. 3414 3415 3416 Release data94a - 1994-02-03 08:58:54 -0500 3417 3418 It simply incorporates the recently announced leap second into the 3419 "leapseconds" file. 3420 3421 3422 Release 93g - 1993-11-22 17:28:27 -0500 3423 3424 Paul Eggert has provided a good deal of historic information (based 3425 on Shanks), and there are some code changes to deal with the buglets 3426 that crawled out in dealing with the new information. 3427 3428 3429 Release 93f - 1993-10-15 12:27:46 -0400 3430 3431 Paul Eggert's changes 3432 3433 3434 Release 93e - 1993-09-05 21:21:44 -0400 3435 3436 This has updated data for Israel, England, and Kwajalein. There's 3437 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 3438 Thanks to Paul Eggert and Peter Ilieve for the changes. 3439 3440 3441 Release 93d - 1993-06-17 23:34:17 -0400 3442 3443 new fix and new data on Israel 3444 3445 3446 Release 93c - 1993-06-06 19:31:55 -0400 3447 3448 [not summarized] 3449 3450 3451 Release 93b - 1993-02-02 14:53:58 -0500 3452 3453 updated "leapseconds" file 3454 3455 3456 Release 93 - 1993-01-08 07:01:06 -0500 3457 3458 At kre's suggestion, the package has been split in two - a code piece 3459 (which also includes documentation) that's only of use to folks who 3460 want to recompile things and a data piece useful to anyone who can 3461 run "zic". 3462 3463 The new version has a few changes to the data files, a few 3464 portability changes, and an off-by-one fix (with thanks to 3465 Tom Karzes at deshaw.com for providing a description and a 3466 solution). 3467 3468 3469 Release 92c - 1992-11-21 17:35:36 -0000 3470 [tz92c.tar.Z is missing!] 3471 3472 The fallout from the latest round of DST transitions. 3473 3474 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3475 there's also a change to "zic.c" that makes it portable to more systems. 3476 3477 3478 Release 92 - 1992-04-25 18:17:03 -0000 3479 [tz92.tar.Z is missing!] 3480 3481 By popular demand (well, at any rate, following a request by kre at munnari) 3482 3483 3484 The 1989 update of the time zone package featured: 3485 3486 * POSIXization (including interpretation of POSIX-style TZ environment 3487 variables, provided by Guy Harris), 3488 * ANSIfication (including versions of "mktime" and "difftime"), 3489 * SVIDulation (an "altzone" variable) 3490 * MACHination (the "gtime" function) 3491 * corrections to some time zone data (including corrections to the rules 3492 for Great Britain and New Zealand) 3493 * reference data from the United States Naval Observatory for folks who 3494 want to do additional time zones 3495 * and the 1989 data for Saudi Arabia. 3496 3497 (Since this code will be treated as "part of the implementation" in some 3498 places and as "part of the application" in others, there's no good way to 3499 name functions, such as timegm, that are not part of the proposed ANSI C 3500 standard; such functions have kept their old, underscore-free names in this 3501 update.) 3502 3503 And the "dysize" function has disappeared; it was present to allow 3504 compilation of the "date" command on old BSD systems, and a version of "date" 3505 is now provided in the package. The "date" command is not created when you 3506 "make all" since it may lack options provided by the version distributed with 3507 your operating system, or may not interact with the system in the same way 3508 the native version does. 3509 3510 Since POSIX frowns on correct leap second handling, the default behavior of 3511 the "zic" command (in the absence of a "-L" option) has been changed to omit 3512 leap second information from its output files. 3513 3514 3515 ----- 3516 Notes 3517 3518 This file contains copies of the part of each release announcement 3519 that talks about the changes in that release. The text has been 3520 adapted and reformatted for the purposes of this file. 3521 3522 Typically a release R consists of a pair of tarball files, 3523 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3524 code2010a, data2012c) consist of just one or the other tarball, and a 3525 few (e.g., code2012c-data2012d) have tarballs with mixed version 3526 numbers. 3527 3528 Release time stamps are taken from the release's commit (for newer, 3529 git releases), from the newest file in the tarball (for older 3530 releases, where this info is available) or from the email announcing 3531 the release (if all else fails; these are marked with a time zone of 3532 -0000 and an "is missing!" comment). 3533 3534 Earlier versions of the code and data were not announced on the tz 3535 list and are not summarized here. 3536 3537 This file is in the public domain. 3538 3539 Local Variables: 3540 coding: utf-8 3541 End: 3542
Indexes created Sun Sep 28 16:09:52 GMT 2025