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