NEWS revision 1.11
1 News for the tz database 2 3 Release 2015d - 2015-04-24 08:09:46 -0700 4 5 Changes affecting future time stamps 6 7 Egypt will not observe DST in 2015 and will consider canceling it 8 permanently. For now, assume no DST indefinitely. 9 (Thanks to Ahmed Nazmy and Tim Parenti.) 10 11 Changes affecting past time stamps 12 13 America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not 14 1966-07-01. Also, Yukon's time zone history is documented better. 15 (Thanks to Brian Inglis and Dennis Ferguson.) 16 17 Change affecting past and future time zone abbreviations 18 19 The abbreviations for Hawaii-Aleutian standard and daylight times 20 have been changed from HAST/HADT to HST/HDT, as per US Government 21 Printing Office style. This affects only America/Adak since 1983, 22 as America/Honolulu was already using the new style. 23 24 Changes affecting code 25 26 zic has some minor performance improvements. 27 28 29 Release 2015c - 2015-04-11 08:55:55 -0700 30 31 Changes affecting future time stamps 32 33 Egypt's spring-forward transition is at 24:00 on April's last Thursday, 34 not 00:00 on April's last Friday. 2015's transition will therefore be on 35 Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 36 apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 37 38 Changes affecting past time stamps 39 40 The following changes affect some pre-1991 Chile-related time stamps 41 in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 42 43 The 1910 transition was January 10, not January 1. 44 45 The 1918 transition was September 10, not September 1. 46 47 The UTC-4 time observed from 1932 to 1942 is now considered to be 48 standard time, not year-round DST. 49 50 Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31, 51 then reverted to standard time, then switched its time zone to 52 UTC-5 on 1947-04-01. 53 54 Assume transitions before 1968 were at 00:00, since we have no data 55 saying otherwise. 56 57 The spring 1988 transition was 1988-10-09, not 1988-10-02. 58 The fall 1990 transition was 1990-03-11, not 1990-03-18. 59 60 Assume no UTC offset change for Pacific/Easter on 1890-01-01, 61 and omit all transitions on Pacific/Easter from 1942 through 1946 62 since we have no data suggesting that they existed. 63 64 One more zone has been turned into a link, as it differed 65 from an existing zone only for older time stamps. As usual, 66 this change affects UTC offsets in pre-1970 time stamps only. 67 The zone's old contents have been moved to the 'backzone' file. 68 The affected zone is America/Montreal. 69 70 Changes affecting commentary 71 72 Mention the TZUpdater tool. 73 74 Mention "The Time Now". (Thanks to Brandon Ramsey.) 75 76 77 Release 2015b - 2015-03-19 23:28:11 -0700 78 79 Changes affecting future time stamps 80 81 Mongolia will start observing DST again this year, from the last 82 Saturday in March at 02:00 to the last Saturday in September at 00:00. 83 (Thanks to Ganbold Tsagaankhuu.) 84 85 Palestine will start DST on March 28, not March 27. Also, 86 correct the fall 2014 transition from September 26 to October 24. 87 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 88 89 Changes affecting past time stamps 90 91 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 92 regression. (Thanks to Stuart Bishop for reporting the problem.) 93 94 Some more zones have been turned into links, when they differed 95 from existing zones only for older time stamps. As usual, 96 these changes affect UTC offsets in pre-1970 time stamps only. 97 Their old contents have been moved to the 'backzone' file. 98 The affected zones are: America/Antigua, America/Cayman, 99 Pacific/Midway, and Pacific/Saipan. 100 101 Changes affecting time zone abbreviations 102 103 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 104 (Thanks to Hank W.) 105 106 Changes affecting code 107 108 Fix integer overflow bug in reference 'mktime' implementation. 109 (Problem reported by Jrg Richter.) 110 111 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 112 to be used in the same executable as standard-library time_t functions. 113 (Problems reported by Bradley White.) 114 115 Changes affecting commentary 116 117 Cite the recent Mexican decree changing Quintana Roo's time zone. 118 (Thanks to Carlos Ral Perasso.) 119 120 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 121 122 Update info about Mars time. 123 124 125 Release 2015a - 2015-01-29 22:35:20 -0800 126 127 Changes affecting future time stamps 128 129 The Mexican state of Quintana Roo, represented by America/Cancun, 130 will shift from Central Time with DST to Eastern Time without DST 131 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 132 133 Chile will not change clocks in April or thereafter; its new standard time 134 will be its old daylight saving time. This affects America/Santiago, 135 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 136 137 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 138 (Thanks to Tim Parenti.) 139 140 Changes affecting past time stamps 141 142 Iceland observed DST in 1919 and 1921, and its 1939 fallback 143 transition was Oct. 29, not Nov. 29. Remove incorrect data from 144 Shanks about time in Iceland between 1837 and 1908. 145 146 Some more zones have been turned into links, when they differed 147 from existing zones only for older time stamps. As usual, 148 these changes affect UTC offsets in pre-1970 time stamps only. 149 Their old contents have been moved to the 'backzone' file. 150 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 151 and Asia/Muscat. 152 153 Changes affecting code 154 155 tzalloc now scrubs time zone abbreviations compatibly with the way 156 that tzset always has, by replacing invalid bytes with '_' and by 157 shortening too-long abbreviations. 158 159 tzselect ports to POSIX awk implementations, no longer mishandles 160 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 161 settings to the user. (Thanks to Stefan Kuhn.) 162 163 Changes affecting build procedure 164 165 'make check' now checks for links to links in the data. 166 One such link (for Africa/Asmera) has been fixed. 167 (Thanks to Stephen Colebourne for pointing out the problem.) 168 169 Changes affecting commentary 170 171 The leapseconds file commentary now mentions the expiration date. 172 (Problem reported by Martin Burnicki.) 173 174 Update Mexican Library of Congress URL. 175 176 177 Release 2014j - 2014-11-10 17:37:11 -0800 178 179 Changes affecting current and future time stamps 180 181 Turks & Caicos' switch from US eastern time to UTC-4 year-round 182 did not occur on 2014-11-02 at 02:00. It's currently scheduled 183 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 184 185 Changes affecting past time stamps 186 187 Many pre-1989 time stamps have been corrected for Asia/Seoul and 188 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 189 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 190 longer guess that Pyongyang mimicked Seoul time after World War II, 191 as this is politically implausible. 192 193 Some more zones have been turned into links, when they differed 194 from existing zones only for older time stamps. As usual, 195 these changes affect UTC offsets in pre-1970 time stamps only. 196 Their old contents have been moved to the 'backzone' file. 197 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 198 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 199 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 200 Indian/Mayotte. 201 202 Changes affecting commentary 203 204 The commentary is less enthusiastic about Shanks as a source, 205 and is more careful to distinguish UT from UTC. 206 207 208 Release 2014i - 2014-10-21 22:04:57 -0700 209 210 Changes affecting future time stamps 211 212 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 213 (Thanks to Ken Rylander for the heads-up.) Guess that future 214 years will use a similar pattern. 215 216 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 217 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 218 (Thanks to Kiley Walbom for the heads-up.) 219 220 Changes affecting time zone abbreviations 221 222 Since Belarus is not changing its clocks even though Moscow is, 223 the time zone abbreviation in Europe/Minsk is changing from FET 224 to its more-traditional value MSK on 2014-10-26 at 01:00. 225 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 226 227 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 228 Indochina, to distinguish it better from ICT (UT+7). 229 230 Changes affecting past time stamps 231 232 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 233 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 234 authoritative book). Asia/Ho_Chi_Minh has been added to 235 zone1970.tab, to give tzselect users in Vietnam two choices, 236 since north and south Vietnam disagreed after our 1970 cutoff. 237 238 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 239 they differed from existing zones only for older time stamps. As 240 usual, these changes affect pre-1970 time stamps only. Their old 241 contents have been moved to the 'backzone' file. 242 243 Changes affecting code 244 245 The time-related library functions now set errno on failure, and 246 some crashes in the new tzalloc-related library functions have 247 been fixed. (Thanks to Christos Zoulas for reporting most of 248 these problems and for suggesting fixes.) 249 250 If USG_COMPAT is defined and the requested time stamp is standard time, 251 the tz library's localtime and mktime functions now set the extern 252 variable timezone to a value appropriate for that time stamp; and 253 similarly for ALTZONE, daylight saving time, and the altzone variable. 254 This change is a companion to the tzname change in 2014h, and is 255 designed to make timezone and altzone more compatible with tzname. 256 257 The tz library's functions now set errno to EOVERFLOW if they fail 258 because the result cannot be represented. ctime and ctime_r now 259 return NULL and set errno when a time stamp is out of range, rather 260 than having undefined behavior. 261 262 Some bugs associated with the new 2014g functions have been fixed. 263 This includes a bug that largely incapacitated the new functions 264 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 265 It also includes some uses of uninitialized variables after tzalloc. 266 The new code uses the standard type 'ssize_t', which the Makefile 267 now gives porting advice about. 268 269 Changes affecting commentary 270 271 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 272 273 274 Release 2014h - 2014-09-25 18:59:03 -0700 275 276 Changes affecting past time stamps 277 278 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 279 280 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 281 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 282 283 Some more zones have been turned into links, when they differed 284 from existing zones only for older time stamps. As usual, 285 these changes affect UTC offsets in pre-1970 time stamps only. 286 Their old contents have been moved to the 'backzone' file. 287 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 288 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 289 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 290 291 Changes affecting code 292 293 zdump -V and -v now output gmtoff= values on all platforms, 294 not merely on platforms defining TM_GMTOFF. 295 296 The tz library's localtime and mktime functions now set tzname to a value 297 appropriate for the requested time stamp, and zdump now uses this 298 on platforms not defining TM_ZONE, fixing a 2014g regression. 299 (Thanks to Tim Parenti for reporting the problem.) 300 301 The tz library no longer sets tzname if localtime or mktime fails. 302 303 zdump -c no longer mishandles transitions near year boundaries. 304 (Thanks to Tim Parenti for reporting the problem.) 305 306 An access to uninitalized data has been fixed. 307 (Thanks to Jrg Richter for reporting the problem.) 308 309 When THREAD_SAFE is defined, the code ports to the C11 memory model. 310 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 311 and two threads race to initialize data used by gmtime-like functions. 312 (Thanks to Andy Heninger for reporting the problems.) 313 314 Changes affecting build procedure 315 316 'make check' now checks better for properly-sorted data. 317 318 Changes affecting documentation and commentary 319 320 zdump's gmtoff=N output is now documented, and its isdst=D output 321 is now documented to possibly output D values other than 0 or 1. 322 323 zdump -c's treatment of years is now documented to use the 324 Gregorian calendar and Universal Time without leap seconds, 325 and its behavior at cutoff boundaries is now documented better. 326 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 327 328 Programs are now documented to use the proleptic Gregorian calendar. 329 (Thanks to Alan Barrett for the suggestion.) 330 331 Fractional-second GMT offsets have been documented for civil time 332 in 19th-century Chennai, Jakarta, and New York. 333 334 335 Release 2014g - 2014-08-28 12:31:23 -0700 336 337 Changes affecting future time stamps 338 339 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 340 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 341 [As noted in 2014j, this switch was later delayed.] 342 343 Changes affecting past time stamps 344 345 Time in Russia or the USSR before 1926 or so has been corrected by 346 a few seconds in the following zones: Asia/Irkutsk, 347 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 348 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 349 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 350 Vladimir Karpinsky.) 351 352 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 353 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 354 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 355 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 356 (Thanks to Stephen Colebourne for pointing to the decree.) 357 358 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 359 360 A new file 'backzone' contains data which may appeal to 361 connoisseurs of old time stamps, although it is out of scope for 362 the tz database, is often poorly sourced, and contains some data 363 that is known to be incorrect. The new file is not recommended 364 for ordinary use and its entries are not installed by default. 365 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 366 Isle of Man entries.) 367 368 Some more zones have been turned into links, when they differed 369 from existing zones only for older time stamps. As usual, 370 these changes affect UTC offsets in pre-1970 time stamps only. 371 Their old contents have been moved to the 'backzone' file. 372 The affected zones are: Africa/Bangui, Africa/Brazzaville, 373 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 374 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 375 376 Changes affecting code 377 378 Unless NETBSD_INSPIRED is defined to 0, the tz library now 379 supplies functions for creating and using objects that represent 380 time zones. The new functions are tzalloc, tzfree, localtime_rz, 381 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 382 time2posix_z. They are intended for performance: for example, 383 localtime_rz (unlike localtime_r) is trivially thread-safe without 384 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 385 functions, and to Alan Barrett and Jonathan Lennox for helping to 386 debug the change.) 387 388 zdump now builds with the tz library unless USE_LTZ is defined to 0, 389 This lets zdump use tz features even if the system library lacks them. 390 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 391 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 392 393 zdump now uses localtime_rz if available, as it's significantly faster, 394 and it can help zdump better diagnose invalid time zone names. 395 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 396 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 397 not available, zdump now uses localtime_r and tzset if available, 398 as this is a bit cleaner and faster than plain localtime. Compile 399 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 400 lacks these two functions. 401 402 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 403 Although not needed for tz's own applications, which are single-threaded, 404 this supports POSIX better if the tz library is used in multithreaded apps. 405 406 Some crashes have been fixed when zdump or the tz library is given 407 invalid or outlandish input. 408 409 The tz library no longer mishandles leap seconds on platforms with 410 unsigned time_t in time zones that lack ordinary transitions after 1970. 411 412 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 413 already defined, to make it easier to configure on common platforms. 414 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 415 416 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 417 assumes that reading uninitialized memory yields garbage values 418 but does not cause other problems such as traps. 419 420 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 421 more likely to guess right for ambiguous time stamps near 422 transitions where tm_isdst does not change. 423 424 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 425 strftime_l for compatibility with recent versions of POSIX. 426 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 427 to 1 on recent POSIX versions, and to 0 otherwise. 428 429 tzselect -c now uses a hybrid distance measure that works better 430 in Africa. (Thanks to Alan Barrett for noting the problem.) 431 432 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 433 or when time_tz is defined. 434 435 When HAVE_UTMPX_H is set the 'date' command now builds on systems 436 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 437 the date it updates the wtmpx file if _PATH_WTMPX is defined. 438 This affects GNU/Linux and similar systems. 439 440 For easier maintenance later, some C code has been simplified, 441 some lint has been removed, and the code has been tweaked so that 442 plain 'make' is more likely to work. 443 444 The C type 'bool' is now used for boolean values, instead of 'int'. 445 446 The long-obsolete LOCALE_HOME code has been removed. 447 448 The long-obsolete 'gtime' function has been removed. 449 450 Changes affecting build procedure 451 452 'zdump' no longer links in ialloc.o, as it's not needed. 453 454 'make check_time_t_alternatives' no longer assumes GNU diff. 455 456 Changes affecting distribution tarballs 457 458 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 459 the tzdata tarball instead of the tzcode tarball, since they help 460 maintain the data. The NEWS and Theory files are now also 461 distributed in the tzdata tarball, as they're relevant for data. 462 (Thanks to Alan Barrett for pointing this out.) Also, the 463 leapseconds.awk file is no longer distributed in the tzcode 464 tarball, since it belongs in the tzdata tarball (where 2014f 465 inadvertently also distributed it). 466 467 Changes affecting documentation and commentary 468 469 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 470 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 471 for debugging it.) 472 473 The man pages have been updated to use function prototypes, 474 to document thread-safe variants like localtime_r, and to document 475 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 476 mktime_z. 477 478 The fields in Link lines have been renamed to be more descriptive 479 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 480 and LINK-TO has become LINK-NAME. 481 482 tz-link.htm mentions the IETF's tzdist working group; Windows 483 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 484 485 Some broken URLs have been fixed in the commentary. (Thanks to 486 Lester Caine.) 487 488 Commentary about Philippines DST has been updated, and commentary 489 on pre-1970 time in India has been added. 490 491 492 Release 2014f - 2014-08-05 17:42:36 -0700 493 494 Changes affecting future time stamps 495 496 Russia will subtract an hour from most of its time zones on 2014-10-26 497 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 498 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 499 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 500 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 501 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 502 (Europe/Samara) are not changing their clocks. The changed zones are 503 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 504 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 505 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 506 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 507 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 508 but not its UTC offset. Two zones are added: Asia/Chita (split 509 from Asia/Yakutsk, and also with two hours subtracted) and 510 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 511 subtracted). (Thanks to Tim Parenti for much of the above.) 512 513 Changes affecting time zone abbreviations 514 515 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 516 and similarly for the other Australian zones. That is, for eastern 517 standard and daylight saving time the abbreviations are AEST and AEDT 518 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 519 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 520 This change does not affect UTC offsets, only time zone abbreviations. 521 (Thanks to Rich Tibbett and many others.) 522 523 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 524 effective 2014-10-26 at 02:00 local time. 525 526 The time zone abbreviation for Xinjiang Time (observed in rmqi) 527 has been changed from URUT to XJT. (Thanks to Luther Ma.) 528 529 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 530 Similarly, prefer EET/EEST for eastern European time in Russia. 531 532 Change time zone abbreviations in (western) Samoa to use "ST" and 533 "DT" suffixes, as this is more likely to match common practice. 534 Prefix "W" to (western) Samoa time when its standard-time offset 535 disagrees with that of American Samoa. 536 537 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 538 539 Time zone abbreviations have been updated for Japan's two time 540 zones used 1896-1937. JWST now stands for Western Standard 541 Time, and JCST for Central Standard Time (formerly this was CJT). 542 These abbreviations are now used for time in Korea, Taiwan, 543 and Sakhalin while controlled by Japan. 544 545 Changes affecting past time stamps 546 547 China's five zones have been simplified to two, since the post-1970 548 differences in the other three seem to have been imaginary. The 549 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 550 removed; backwards-compatibility links still work, albeit with 551 different behaviors for time stamps before May 1980. Asia/Urumqi's 552 1980 transition to UTC+8 has been removed, so that it is now at 553 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 554 Treindl sent helpful translations of two papers by Guo Qingsheng.) 555 556 Some zones have been turned into links, when they differed from existing 557 zones only for older UTC offsets where data entries were likely invented. 558 These changes affect UTC offsets in pre-1970 time stamps only. This is 559 similar to the change in release 2013e, except this time for western 560 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 561 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 562 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 563 Atlantic/St_Helena. This also affects the backwards-compatibility 564 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 565 Tim Parenti, and David Patte for reporting problems in earlier 566 versions of this change.) 567 568 Asia/Shanghai's pre-standard-time UT offset has been changed from 569 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 570 transition to standard time has been changed from 1928 to 1901. 571 572 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 573 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 574 In 1946 it observed DST from 05-15 through 09-30; in 1947 575 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 576 (Thanks to Yu-Cheng Chuang.) 577 578 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 579 580 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 581 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 582 583 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 584 from 1911 to 1950. 585 586 Pacific/Chatham has been changed to New Zealand standard time plus 587 45 minutes for the period before 1957, reflecting a 1956 remark in 588 the New Zealand parliament. 589 590 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 591 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 592 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 593 not 04-06 at 02:00; and there was no DST in 1920. 594 595 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 596 597 Time in Russia before 1927 or so has been corrected by a few seconds in 598 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 599 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 600 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 601 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 602 603 Changes affecting data format 604 605 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 606 The new file's extended format allows multiple country codes per zone. 607 The older file is still installed but is deprecated; its format is 608 not changing and it will still be distributed for a while, but new 609 applications should use the new file. 610 611 The new file format simplifies maintenance of obscure locations. 612 To test this, it adds coverage for the Crozet Islands and the 613 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 614 615 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 616 It is still ASCII now, but commentary about the switch has been added. 617 The new file 'zone1970.tab' already uses UTF-8. 618 619 Changes affecting code 620 621 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 622 is defined. (Thanks to Elliott Hughes for reporting the problem.) 623 624 'zic' no longer mishandles input when ignoring case in locales that 625 are not compatible with English, e.g., unibyte Turkish locales when 626 compiled with HAVE_GETTEXT. 627 628 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 629 they no longer use ASCII '-' as if it were a dash. 630 631 'zic' now rejects output file names that contain '.' or '..' components. 632 (Thanks to Tim Parenti for reporting the problem.) 633 634 'zic -v' now warns about output file names that do not follow 635 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 636 David Olson for starting the ball rolling on this.) 637 638 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 639 640 Changes affecting build procedure 641 642 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 643 (Thanks to John Cochran.) 644 645 Changes affecting documentation and commentary 646 647 The 'Theory' file documents legacy names, the longstanding 648 exceptions to the POSIX-inspired file name rules. 649 650 The 'zic' documentation clarifies the role of time types when 651 interpreting dates. (Thanks to Arthur David Olson.) 652 653 Documentation and commentary now prefer UTF-8 to US-ASCII, 654 allowing the use of proper accents in foreign words and names. 655 Code and data have not changed because of this. (Thanks to 656 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 657 this.) 658 659 Non-HTML documentation and commentary now use plain-text URLs instead of 660 HTML insertions, and are more consistent about bracketing URLs when they 661 are not already surrounded by white space. (Thanks to suggestions by 662 Steffen Nurpmeso.) 663 664 There is new commentary about Xujiahui Observatory, the five time-zone 665 project in China from 1918 to 1949, timekeeping in Japanese-occupied 666 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 667 warlord Jin Shuren in the data. 668 669 Commentary about the coverage of each Russian zone has been standardized. 670 (Thanks to Tim Parenti). 671 672 There is new commentary about contemporary timekeeping in Ethiopia. 673 674 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 675 676 There is new commentary about time in Poland in 1919. 677 678 Proper credit has been given to DST inventor George Vernon Hudson. 679 680 Commentary about time in Metlakatla, AK and Resolute, NU has been 681 improved, with a new source for the former. 682 683 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 684 is uninhabited. 685 686 Commentary about permanent Antarctic bases has been updated. 687 688 Several typos have been corrected. (Thanks to Tim Parenti for 689 contributing some of these fixes.) 690 691 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 692 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 693 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 694 (Thanks to a heads-up from Dirkjan Ochtman.) 695 696 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 697 have been removed. These obsolescent US Naval Observatory entries were no 698 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 699 700 701 Release 2014e - 2014-06-12 21:53:52 -0700 702 703 Changes affecting near-future time stamps 704 705 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 706 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 707 switch to standard time at 24:00 the last Thursday before Ramadan, and 708 back to DST at 00:00 the first Friday after Ramadan. 709 710 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 711 to Milamber Space Network.) Guess that from 2015 on Morocco will 712 temporarily switch to standard time at 03:00 the last Saturday before 713 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 714 715 Changes affecting past time stamps 716 717 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 718 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 719 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 720 in 1991. (Thanks to Hank W. for reporting the problems.) 721 722 Changes affecting commentary 723 724 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 725 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 726 removes stale pointers to World Time Explorer and WORLDTIME. 727 728 729 Release 2014d - 2014-05-27 21:34:40 -0700 730 731 Changes affecting code 732 733 zic no longer generates files containing time stamps before the Big Bang. 734 This works around GNOME bug 730332 735 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 736 (Thanks to Leonardo Chiquitto for reporting the bug, and to 737 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 738 739 Changes affecting documentation 740 741 tz-link.htm now mentions GNOME. 742 743 744 Release 2014c - 2014-05-13 07:44:13 -0700 745 746 Changes affecting near-future time stamps 747 748 Egypt observes DST starting 2014-05-15 at 24:00. 749 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 750 Details have not been announced, except that DST will not be observed 751 during Ramadan. Guess that DST will stop during the same Ramadan dates as 752 Morocco, and that Egypt's future spring and fall transitions will be the 753 same as 2010 when it last observed DST, namely April's last Friday at 754 00:00 to September's last Thursday at 23:00 standard time. Also, guess 755 that Ramadan transitions will be at 00:00 standard time. 756 757 Changes affecting code 758 759 zic now generates transitions for minimum time values, eliminating guesswork 760 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 761 762 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 763 764 Changes affecting commentary and documentation 765 766 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 767 768 769 Release 2014b - 2014-03-24 21:28:50 -0700 770 771 Changes affecting near-future time stamps 772 773 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 774 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 775 776 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 777 Bengt-Inge Larsson.) This is currently an approximation; a better version 778 will require the zic and localtime fixes mentioned below, and the plan is 779 to wait for a while until at least the zic fixes propagate. 780 781 Changes affecting code 782 783 'zic' and 'localtime' no longer reject locations needing four transitions 784 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 785 Also, 'zic' avoids some unlikely failures due to integer overflow. 786 787 Changes affecting build procedure 788 789 'make check' now detects Rule lines defined but never used. 790 The NZAQ rules, an instance of this problem, have been removed. 791 792 Changes affecting commentary and documentation 793 794 Fix Tuesday/Thursday typo in description of time in Israel. 795 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 796 797 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 798 to Donald MacQueen.) Instead, the Microsoft Windows Store app 799 library supports them. 800 801 Add comments about Johnston Island time in the 1960s. 802 (Thanks to Lyle McElhaney.) 803 804 Morocco's 2014 DST start will be as predicted. 805 (Thanks to Sebastien Willemijns.) 806 807 808 Release 2014a - 2014-03-07 23:30:29 -0800 809 810 Changes affecting near-future time stamps 811 812 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 813 the heads-up, and to Tim Parenti for simplifying the update.) 814 815 Changes affecting past time stamps 816 817 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 818 (Thanks to Steffen Thorsen.) 819 820 Ukraine switched from Moscow to Eastern European time on 1990-07-01 821 (not 1992-01-01), and observed DST during the entire next winter. 822 (Thanks to Vladimir in Moscow via Alois Treindl.) 823 824 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 825 (Thanks to Avigdor Finkelstein.) 826 827 Changes affecting code 828 829 A uninitialized-storage bug in 'localtime' has been fixed. 830 (Thanks to Logan Chien.) 831 832 Changes affecting the build procedure 833 834 The settings for 'make check_web' now default to Ubuntu 13.10. 835 836 Changes affecting commentary and documentation 837 838 The boundary of the US Pacific time zone is given more accurately. 839 (Thanks to Alan Mintz.) 840 841 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 842 843 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 844 845 Better descriptions of countries with same time zone history as 846 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 847 848 Several changes affect tz-link.htm, the main web page. 849 850 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 851 David Braverman). 852 853 Mention xCal (Internet RFC 6321) and jCal. 854 855 Microsoft has some support for tz database names. 856 857 CLDR data formats include both XML and JSON. 858 859 Mention Maggiolo's map of solar vs standard time. 860 (Thanks to Arthur David Olson.) 861 862 Mention TZ4Net. (Thanks to Matt Johnson.) 863 864 Mention the timezone-olson Haskell package. 865 866 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 867 868 Remove moribund links to daylight-savings-time.info and to 869 Simple Timer + Clocks. 870 871 Update two links. (Thanks to Oscar van Vlijmen.) 872 873 Fix some formatting glitches, e.g., remove random newlines from 874 abbr elements' title attributes. 875 876 877 Release 2013i - 2013-12-17 07:25:23 -0800 878 879 Changes affecting near-future time stamps: 880 881 Jordan switches back to standard time at 00:00 on December 20, 2013. 882 The 2006-2011 transition schedule is planned to resume in 2014. 883 (Thanks to Steffen Thorsen.) 884 885 Changes affecting past time stamps: 886 887 In 2004, Cuba began DST on March 28, not April 4. 888 (Thanks to Steffen Thorsen.) 889 890 Changes affecting code 891 892 The compile-time flag NOSOLAR has been removed, as nowadays the 893 benefit of slightly shrinking runtime table size is outweighed by the 894 cost of disallowing potential future updates that exceed old limits. 895 896 Changes affecting documentation and commentary 897 898 The files solar87, solar88, and solar89 are no longer distributed. 899 They were a negative experiment - that is, a demonstration that 900 tz data can represent solar time only with some difficulty and error. 901 Their presence in the distribution caused confusion, as Riyadh 902 civil time was generally not solar time in those years. 903 904 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 905 906 907 Release 2013h - 2013-10-25 15:32:32 -0700 908 909 Changes affecting current and future time stamps: 910 911 Libya has switched its time zone back to UTC+2 without DST, 912 instead of UTC+1 with DST. (Thanks to Even Scharning.) 913 914 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 915 (Thanks to Gwillim Law.) 916 917 Changes affecting future time stamps: 918 919 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 920 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 921 (Thanks to Steffen Thorsen.) 922 923 Add entries for DST transitions in Morocco in the year 2038. 924 This avoids some year-2038 glitches introduced in 2013g. 925 (Thanks to Yoshito Umaoka for reporting the problem.) 926 927 Changes affecting API 928 929 The 'tzselect' command no longer requires the 'select' command, 930 and should now work with /bin/sh on more platforms. It also works 931 around a bug in BusyBox awk before version 1.21.0. (Thanks to 932 Patrick 'P. J.' McDermott and Alan Barrett.) 933 934 Changes affecting code 935 936 Fix localtime overflow bugs with 32-bit unsigned time_t. 937 938 zdump no longer assumes sscanf returns maximal values on overflow. 939 940 Changes affecting the build procedure 941 942 The builder can specify which programs to use, if any, instead of 943 'ar' and 'ranlib', and libtz.a is now built locally before being 944 installed. (Thanks to Michael Forney.) 945 946 A dependency typo in the 'zdump' rule has been fixed. 947 (Thanks to Andrew Paprocki.) 948 949 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 950 work as specified by POSIX.2-1992 or later; this is portable nowadays. 951 952 'make clean' no longer removes 'leapseconds', since it's 953 host-independent and is part of the distribution. 954 955 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 956 957 Changes affecting documentation and commentary 958 959 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 960 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 961 962 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 963 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 964 longer maintained) and for old advisories. SOFA now does C. 965 966 Release 2013g - 2013-09-30 21:08:26 -0700 967 968 Changes affecting current and near-future time stamps 969 970 Morocco now observes DST from the last Sunday in March to the last 971 Sunday in October, not April to September respectively. (Thanks 972 to Steffen Thorsen.) 973 974 Changes affecting 'zic' 975 976 'zic' now runs on platforms that lack both hard links and symlinks. 977 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 978 Also, fix some bugs on platforms that lack hard links but have symlinks. 979 980 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 981 to predict the far future, fixing a bug introduced in 2013e. 982 983 Changes affecting the build procedure 984 985 The 'leapseconds' file is again put into the tzdata tarball. 986 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 987 Matt Burgess and Ian Abbott.) The timestamps of these and other 988 dependent files in tarballs are adjusted more consistently. 989 990 Changes affecting documentation and commentary 991 992 The README file is now part of the data tarball as well as the code. 993 It now states that files are public domain unless otherwise specified. 994 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 995 Its details about the 1989 release moved to a place of honor near 996 the end of NEWS. 997 998 999 Release 2013f - 2013-09-24 23:37:36 -0700 1000 1001 Changes affecting near-future time stamps 1002 1003 Tocantins will very likely not observe DST starting this spring. 1004 (Thanks to Steffen Thorsen.) 1005 1006 Jordan will likely stay at UTC+3 indefinitely, and will not fall 1007 back this fall. 1008 1009 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 1010 1011 Changes affecting API 1012 1013 The types of the global variables 'timezone' and 'altzone' (if present) 1014 have been changed back to 'long'. This is required for 'timezone' 1015 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 1016 These variables were originally 'long' in the tz code, but were 1017 mistakenly changed to 'time_t' in 1987; nobody reported the 1018 incompatibility until now. The difference matters on x32, where 1019 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 1020 1021 Changes affecting the build procedure 1022 1023 Avoid long strings in leapseconds.awk to work around a mawk bug. 1024 (Thanks to Cyril Baurand.) 1025 1026 Changes affecting documentation and commentary 1027 1028 New file 'NEWS' that contains release notes like this one. 1029 1030 Paraguay's law does not specify DST transition time; 00:00 is customary. 1031 (Thanks to Waldemar Villamayor-Venialbo.) 1032 1033 Minor capitalization fixes. 1034 1035 Changes affecting version-control only 1036 1037 The experimental GitHub repository now contains annotated and 1038 signed tags for recent releases, e.g., '2013e' for Release 2013e. 1039 Releases are tagged starting with 2012e; earlier releases were 1040 done differently, and tags would either not have a simple name or 1041 not exactly match what was released. 1042 1043 'make set-timestamps' is now simpler and a bit more portable. 1044 1045 1046 Release 2013e - 2013-09-19 23:50:04 -0700 1047 1048 Changes affecting near-future time stamps 1049 1050 This year Fiji will start DST on October 27, not October 20. 1051 (Thanks to David Wheeler for the heads-up.) For now, guess that 1052 Fiji will continue to spring forward the Sunday before the fourth 1053 Monday in October. 1054 1055 Changes affecting current and future time zone abbreviations 1056 1057 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 1058 time zone abbreviations since 1932. (Thanks to George Ziegler, 1059 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 1060 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 1061 Asia/Makassar, and Asia/Pontianak. 1062 1063 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 1064 daylight saving time) for San Luis, Argentina since 2009. 1065 1066 Changes affecting Godthb time stamps after 2037 if version mismatch 1067 1068 Allow POSIX-like TZ strings where the transition time's hour can 1069 range from -167 through 167, instead of the POSIX-required 0 1070 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 1071 new Fiji rules. This is a more-compact way to represent 1072 far-future time stamps for America/Godthab, America/Santiago, 1073 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1074 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1075 this change. (Derived from a suggestion by Arthur David Olson.) 1076 1077 Allow POSIX-like TZ strings where daylight saving time is in 1078 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1079 Argentina Summer Time all year. This supports a more-compact way 1080 to represent the 2013d data for America/Argentina/San_Luis. 1081 Because of the change for San Luis noted above this change does not 1082 affect the current data. (Thanks to Andrew Main (Zefram) for 1083 suggestions that improved this change.) 1084 1085 Where these two TZ changes take effect, there is a minor extension 1086 to the tz file format in that it allows new values for the 1087 embedded TZ-format string, and the tz file format version number 1088 has therefore been increased from 2 to 3 as a precaution. 1089 Version-2-based client code should continue to work as before for 1090 all time stamps before 2038. Existing version-2-based client code 1091 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1092 files, and typically works in practice even for time stamps after 1093 2037; the only known exception is America/Godthab. 1094 1095 Changes affecting time stamps before 1970 1096 1097 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1098 some errors before 1947. 1099 1100 Some zones have been turned into links, when they differ from existing 1101 zones only in older data entries that were likely invented or that 1102 differ only in LMT or transitions from LMT. These changes affect 1103 only time stamps before 1943. The affected zones are: 1104 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1105 America/Grenada, America/Guadeloupe, America/Marigot, 1106 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1107 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1108 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1109 confirming that the old Europe/Vaduz zone was wrong and the new 1110 link is better for WWII-era times.) 1111 1112 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1113 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 1114 from 1890 to 1912. 1115 1116 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1117 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 1118 to Alois Treindl). 1119 1120 Change the date of the circa-1850 Zurich transition from 1849-09-12 1121 to 1853-07-16, overriding Shanks with data from Messerli about 1122 postal and telegraph time in Switzerland. 1123 1124 Changes affecting time zone abbreviations before 1970 1125 1126 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1127 as Jakarta was called Batavia back then. 1128 1129 Changes affecting API 1130 1131 The 'zic' command now outputs a dummy transition when far-future 1132 data can't be summarized using a TZ string, and uses a 402-year 1133 window rather than a 400-year window. For the current data, this 1134 affects only the Asia/Tehran file. It does not affect any of the 1135 time stamps that this file represents, so zdump outputs the same 1136 information as before. (Thanks to Andrew Main (Zefram).) 1137 1138 The 'date' command has a new '-r' option, which lets you specify 1139 the integer time to display, a la FreeBSD. 1140 1141 The 'tzselect' command has two new options '-c' and '-n', which lets you 1142 select a zone based on latitude and longitude. 1143 1144 The 'zic' command's '-v' option now warns about constructs that 1145 require the new version-3 binary file format. (Thanks to Arthur 1146 David Olson for the suggestion.) 1147 1148 Support for floating-point time_t has been removed. 1149 It was always dicey, and POSIX no longer requires it. 1150 (Thanks to Eric Blake for suggesting to the POSIX committee to 1151 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1152 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1153 bugs and elucidating some of the corners of the old floating-point 1154 implementation.) 1155 1156 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1157 changed back to the old practice of using 'long' to represent UT 1158 offsets. This had been inadvertently and mistakenly changed to 1159 'int_fast32_t'. (Thanks to Christos Zoulas.) 1160 1161 The code avoids undefined behavior on integer overflow in some 1162 more places, including gmtime, localtime, mktime and zdump. 1163 1164 Changes affecting the zdump utility 1165 1166 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1167 "UTC" does not make sense for time stamps that predate the introduction 1168 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1169 for clarifying UT vs UTC.) 1170 1171 Data changes affecting behavior of tzselect and similar programs 1172 1173 Country code BQ is now called the more-common name "Caribbean Netherlands" 1174 rather than the more-official "Bonaire, St Eustatius & Saba". 1175 1176 Remove from zone.tab the names America/Montreal, America/Shiprock, 1177 and Antarctica/South_Pole, as they are equivalent to existing 1178 same-country-code zones for post-1970 time stamps. The data entries for 1179 these names are unchanged, so the names continue to work as before. 1180 1181 Changes affecting code internals 1182 1183 zic -c now runs way faster on 64-bit hosts when given large numbers. 1184 1185 zic now uses vfprintf to avoid allocating and freeing some memory. 1186 1187 tzselect now computes the list of continents from the data, 1188 rather than have it hard-coded. 1189 1190 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1191 1192 Changes affecting the build procedure 1193 1194 The 'leapseconds' file is now generated automatically from a 1195 new file 'leap-seconds.list', which is a copy of 1196 <ftp://time.nist.gov/pub/leap-seconds.list>. 1197 A new source file 'leapseconds.awk' implements this. 1198 The goal is simplification of the future maintenance of 'leapseconds'. 1199 1200 When building the 'posix' or 'right' subdirectories, if the 1201 subdirectory would be a copy of the default subdirectory, it is 1202 now made a symbolic link if that is supported. This saves about 1203 2 MB of file system space. 1204 1205 The links America/Shiprock and Antarctica/South_Pole have been 1206 moved to the 'backward' file. This affects only nondefault builds 1207 that omit 'backward'. 1208 1209 Changes affecting version-control only 1210 1211 .gitignore now ignores 'date'. 1212 1213 Changes affecting documentation and commentary 1214 1215 Changes to the 'tzfile' man page 1216 1217 It now mentions that the binary file format may be extended in 1218 future versions by appending data. 1219 1220 It now refers to the 'zdump' and 'zic' man pages. 1221 1222 Changes to the 'zic' man page 1223 1224 It lists conditions that elicit a warning with '-v'. 1225 1226 It says that the behavior is unspecified when duplicate names 1227 are given, or if the source of one link is the target of another. 1228 1229 Its examples are updated to match the latest data. 1230 1231 The definition of white space has been clarified slightly. 1232 (Thanks to Michael Deckers.) 1233 1234 Changes to the 'Theory' file 1235 1236 There is a new section about the accuracy of the tz database, 1237 describing the many ways that errors can creep in, and 1238 explaining why so many of the pre-1970 time stamps are wrong or 1239 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1240 Wollman for discussions that contributed to this). 1241 1242 The 'Theory' file describes LMT better (this follows a 1243 suggestion by Guy Harris). 1244 1245 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1246 1247 It's mentioned that excluding 'backward' should not affect the 1248 other data, and it suggests at least one zone.tab name per 1249 inhabited country (thanks to Stephen Colebourne). 1250 1251 Some longstanding restrictions on names are documented, e.g., 1252 'America/New_York' precludes 'America/New_York/Bronx'. 1253 1254 It gives more reasons for the 1970 cutoff. 1255 1256 It now mentions which time_t variants are supported, such as 1257 signed integer time_t. (Thanks to Paul Goyette for reporting 1258 typos in an experimental version of this change.) 1259 1260 (Thanks to Philip Newton for correcting typos in these changes.) 1261 1262 Documentation and commentary is more careful to distinguish UT in 1263 general from UTC in particular. (Thanks to Steve Allen.) 1264 1265 Add a better source for the Zurich 1894 transition. 1266 (Thanks to Pierre-Yves Berger.) 1267 1268 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1269 1270 1271 Release 2013d - 2013-07-05 07:38:01 -0700 1272 1273 Changes affecting future time stamps: 1274 1275 Morocco's midsummer transitions this year are July 7 and August 10, 1276 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1277 1278 Israel now falls back on the last Sunday of October. 1279 (Thanks to Ephraim Silverberg.) 1280 1281 Changes affecting past time stamps: 1282 1283 Specify Jerusalem's location more precisely; this changes the pre-1880 1284 times by 2 s. 1285 1286 Changing affecting metadata only: 1287 1288 Fix typos in the entries for country codes BQ and SX. 1289 1290 Changes affecting code: 1291 1292 Rework the code to fix a bug with handling Australia/Macquarie on 1293 32-bit hosts (thanks to Arthur David Olson). 1294 1295 Port to platforms like NetBSD, where time_t can be wider than long. 1296 1297 Add support for testing time_t types other than the system's. 1298 Run 'make check_time_t_alternatives' to try this out. 1299 Currently, the tests fail for unsigned time_t; 1300 this should get fixed at some point. 1301 1302 Changes affecting documentation and commentary: 1303 1304 Deemphasize the significance of national borders. 1305 1306 Update the zdump man page. 1307 1308 Remove obsolete NOID comment (thanks to Denis Excoffier). 1309 1310 Update several URLs and comments in the web pages. 1311 1312 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1313 1314 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1315 1316 1317 Release 2013c - 2013-04-19 16:17:40 -0700 1318 1319 Changes affecting current and future time stamps: 1320 1321 Palestine observed DST starting March 29, 2013. (Thanks to 1322 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1323 with the predicted rules being the last Thursday in March at 24:00 1324 to the first Friday on or after September 21 at 01:00. 1325 1326 Assume that the recent change to Paraguay's DST rules is permanent, 1327 by moving the end of DST to the 4th Sunday in March every year. 1328 (Thanks to Carlos Ral Perasso.) 1329 1330 Changes affecting past time stamps: 1331 1332 Fix some historical data for Palestine to agree with that of 1333 timeanddate.com, as follows: 1334 1335 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1336 00:00 Apr 1. 1337 1338 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1339 02:00. 1340 1341 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1342 1343 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1344 1345 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1346 1347 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1348 1349 Fix times of habitation for Macquarie to agree with the Tasmania 1350 Parks & Wildlife Service history, which indicates that permanent 1351 habitation was 1899-1919 and 1948 on. 1352 1353 Changing affecting metadata only: 1354 1355 Macquarie Island is politically part of Australia, not Antarctica. 1356 (Thanks to Tobias Conradi.) 1357 1358 Sort Macquarie more-consistently with other parts of Australia. 1359 (Thanks to Tim Parenti.) 1360 1361 1362 Release 2013b - 2013-03-10 22:33:40 -0700 1363 1364 Changes affecting current and future time stamps: 1365 1366 Haiti uses US daylight-saving rules this year, and presumably future years. 1367 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1368 1369 Paraguay will end DST on March 24 this year. 1370 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1371 1372 Morocco does not observe DST during Ramadan; 1373 try to predict Ramadan in Morocco as best we can. 1374 (Thanks to Erik Homoet for the heads-up.) 1375 1376 Changes affecting commentary: 1377 1378 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1379 Update URL for Solaris. Mention Internet RFC 6557. 1380 Update Internet RFCs 2445->5545, 2822->5322. 1381 Switch from FTP to HTTP for Internet RFCs. 1382 1383 1384 Release 2013a - 2013-02-27 09:20:35 -0800 1385 1386 Change affecting binary data format: 1387 1388 The zone offset at the end of version-2-format zone files is now 1389 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1390 1391 Changes affecting current and future time stamps: 1392 1393 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1394 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1395 (Thanks to Steffen Thorsen and Robert Elz.) 1396 1397 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1398 (Thanks to Tobias Conradi and Arthur David Olson.) 1399 1400 Many changes affect historical time stamps before 1940. 1401 These were deduced from: Milne J. Civil time. Geogr J. 1899 1402 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1403 1404 Changes affecting the code: 1405 1406 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1407 the data). (Thanks to Arthur David Olson.) 1408 1409 Fix localtime bug when time_t is unsigned and data files were generated 1410 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1411 to Arthur David Olson for fixing.) 1412 1413 Allow the email address for bug reports to be set by the packager. 1414 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 1415 1416 Update HTML checking to be compatible with Ubuntu 12.10. 1417 1418 Check that files are a safe subset of ASCII. At some point we may 1419 relax this requirement to a safe subset of UTF-8. Without the 1420 check, some non-UTF-8 encodings were leaking into the distribution. 1421 1422 Commentary changes: 1423 1424 Restore a comment about copyright notices that was inadvertently deleted. 1425 (Thanks to Arthur David Olson.) 1426 1427 Improve the commentary about which districts observe what times 1428 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1429 1430 Add web page links to tz.js. 1431 1432 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1433 1434 1435 Release 2012j - 2012-11-12 18:34:49 -0800 1436 1437 Libya moved to CET this weekend, but with DST planned next year. 1438 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1439 1440 Signatures now have the extension .asc, not .sign, as that's more 1441 standard. (Thanks to Phil Pennock.) 1442 1443 The output of 'zdump --version', and of 'zic --version', now 1444 uses a format that is more typical for --version. 1445 (Thanks to Joseph S. Myers.) 1446 1447 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1448 now uses tz (a] iana.org rather than the old elsie address. 1449 1450 zic -v now complains about abbreviations that are less than 3 1451 or more than 6 characters, as per Posix. Formerly, it checked 1452 for abbreviations that were more than 3. 1453 1454 'make public' no longer puts its temporary directory under /tmp, 1455 and uses the just-built zic rather than the system zic. 1456 1457 Various fixes to documentation and commentary. 1458 1459 1460 Release 2012i - 2012-11-03 12:57:09 -0700 1461 1462 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1463 1464 Linker flags can now be specified via LDFLAGS. 1465 AWK now defaults to 'awk', not 'nawk'. 1466 The shell in tzselect now defaults to /bin/bash, but this can 1467 be overridden by specifying KSHELL. 1468 The main web page now mentions the unofficial GitHub repository. 1469 (Thanks to Mike Frysinger.) 1470 1471 Tarball signatures can now be built by running 'make signatures'. 1472 There are also new makefile rules 'tarballs', 'check_public', and 1473 separate makefile rules for each tarball and signature file. 1474 A few makefile rules are now more portable to strict POSIX. 1475 1476 The main web page now lists the canonical IANA URL. 1477 1478 1479 Release 2012h - 2012-10-26 22:49:10 -0700 1480 1481 Bahia no longer has DST. (Thanks to Kelley Cook.) 1482 1483 Tocantins has DST. (Thanks to Rodrigo Severo.) 1484 1485 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1486 1487 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1488 1489 Web page updates. 1490 1491 More C modernization, except that at Arthur David Olson's suggestion 1492 the instances of 'register' were kept. 1493 1494 1495 Release 2012g - 2012-10-17 20:59:45 -0700 1496 1497 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1498 1499 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1500 1501 Assume C89. 1502 1503 To attack the version-number problem, this release ships the file 1504 'Makefile' (which contains the release number) in both the tzcode and 1505 the tzdata tarballs. The two Makefiles are identical, and should be 1506 identical in any matching pair of tarballs, so it shouldn't matter 1507 which order you extract the tarballs. Perhaps we can come up with a 1508 better version-number scheme at some point; this scheme does have the 1509 virtue of not adding more files. 1510 1511 1512 Release 2012f - 2012-09-12 23:17:03 -0700 1513 1514 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1515 20 this year. (Thanks to Steffen Thorsen.) 1516 1517 1518 Release 2012e - 2012-08-02 20:44:55 -0700 1519 1520 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1521 (Thanks to Steffen Thorsen.) 1522 1523 * Use a single version number for both code and data. 1524 1525 * .gitignore: New file. 1526 1527 * Remove trailing white space. 1528 1529 1530 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1531 1532 Changes for Morocco's time stamps, which take effect in a couple of 1533 hours, along with infrastructure changes to accommodate how the tz 1534 code and data are released on IANA. 1535 1536 1537 Release data2012c - 2012-03-27 12:17:25 -0400 1538 1539 africa 1540 Summer time changes for Morocco (to start late April 2012) 1541 1542 asia 1543 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1544 1545 northamerica 1546 Haiti following US/Canada rules for 2012 (and we're assuming, 1547 for now anyway, for the future). 1548 1549 1550 Release 2012b - 2012-03-02 12:29:15 +0700 1551 1552 There is just one change to tzcode2012b (compared with 2012a): 1553 the Makefile that was accidentally included with 2012a has been 1554 replaced with the version that should have been there, which is 1555 identical with the previous version (from tzcode2011i). 1556 1557 There are just two changes in tzdata2012b compared with 2012a. 1558 1559 Most significantly, summer time in Cuba has been delayed 3 weeks 1560 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1561 date, as listed in 2012a) is just a little over a week away, this 1562 change is urgent. 1563 1564 Less importantly, an excess tab in one of the changes in zone.tab 1565 in 2012a has been removed. 1566 1567 1568 Release 2012a - 2012-03-01 18:28:10 +0700 1569 1570 The changes in tzcode2012a (compared to the previous version, 2011i) 1571 are entirely to the README and tz-art.htm and tz-link.htm files, if 1572 none of those concern you, you can ignore the code update. The changes 1573 reflect the changed addresses for the mailing list and the code and 1574 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1575 has been added to tz-link.htm). 1576 1577 In tzdata2012a (compared to the previous release, which was 2011n) 1578 the major changes are: 1579 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1580 Falkland Islands onto permanent summer time (we're assuming for the 1581 foreseeable future, though 2012 is all we're fairly certain of.) 1582 Armenia has abolished Summer Time. 1583 Tokelau jumped the International Date Line back last December 1584 (just the same as their near neighbour, Samoa). 1585 America/Creston is a new zone for a small area of British Columbia 1586 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1587 1588 Other minor changes are: 1589 Corrections to 1918 Canadian summer time end dates. 1590 Updated URL for UK time zone history (in comments) 1591 A few typos in Le Corre's list of free French place names (comments) 1592 1593 1594 Release data2011n - 2011-10-30 14:57:54 +0700 1595 1596 There are three changes of note - most urgently, Cuba (America/Havana) 1597 has extended summer time by two weeks, now to end on Nov 13, rather than 1598 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1599 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1600 all, and consequently that zone has been removed (again) and reinstated 1601 in the "backward" file as a link to Europe/Chisinau. And third, the 1602 end date for Fiji's summer time this summer was moved forward from the 1603 earlier planned Feb 26, to Jan 22. 1604 1605 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1606 (and the incorrect syntax that was in the 2011m version of that file 1607 is so fixed - it would have been fixed in a different way had this 1608 change not happened - that's the "missing" sccs version id). 1609 1610 1611 Release data2011m - 2011-10-24 21:42:16 +0700 1612 1613 In particular, the typos in comments in the data (2011-11-17 should have 1614 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1615 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1616 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 1617 Tim Parenti, and also Denys Gavrysh) 1618 1619 In addition, I added Europe/Tiraspol to zone.tab. 1620 1621 This time, all the files have new version numbers... (including the files 1622 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 1623 version numbers there...) 1624 1625 1626 Release data2011l - 2011-10-10 11:15:43 +0700 1627 1628 There are just 2 changes that cause different generated tzdata files from 1629 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 1630 is included, but commented out. Compared with the diff I sent out last week, 1631 this version also includes attributions for the sources for the changes 1632 (in much the same format as ado used, but the html tags have not been 1633 checked, verified, or used in any way at all, so if there are errors there, 1634 please let me know.) 1635 1636 1637 Release data2011k - 2011-09-20 17:54:03 -0400 1638 1639 [not summarized] 1640 1641 1642 Release data2011j - 2011-09-12 09:22:49 -0400 1643 1644 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 1645 Tanzania); there are also two spelling corrections to comments in 1646 the australasia file (with thanks to Christos Zoulas). 1647 1648 1649 Release 2011i - 2011-08-29 05:56:32 -0400 1650 1651 [not summarized] 1652 1653 1654 Release data2011h - 2011-06-15 18:41:48 -0400 1655 1656 Russia and Curaao changes 1657 1658 1659 Release 2011g - 2011-04-25 09:07:22 -0400 1660 1661 update the rules for Egypt to reflect its abandonment of DST this year 1662 1663 1664 Release 2011f - 2011-04-06 17:14:53 -0400 1665 1666 [not summarized] 1667 1668 1669 Release 2011e - 2011-03-31 16:04:38 -0400 1670 1671 Morocco, Chile, and tz-link changes 1672 1673 1674 Release 2011d - 2011-03-14 09:18:01 -0400 1675 1676 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 1677 1678 1679 Release 2011c - 2011-03-07 09:30:09 -0500 1680 1681 These do affect current time stamps in Chile and Annette Island, Canada. 1682 1683 1684 Release 2011b - 2011-02-07 08:44:50 -0500 1685 1686 [not summarized] 1687 1688 1689 Release 2011a - 2011-01-24 10:30:16 -0500 1690 1691 [not summarized] 1692 1693 1694 Release data2010o - 2010-11-01 09:18:23 -0400 1695 1696 change to the end of DST in Fiji in 2011 1697 1698 1699 Release 2010n - 2010-10-25 08:19:17 -0400 1700 1701 [not summarized] 1702 1703 1704 Release 2010m - 2010-09-27 09:24:48 -0400 1705 1706 Hong Kong, Vostok, and zic.c changes 1707 1708 1709 Release 2010l - 2010-08-16 06:57:25 -0400 1710 1711 [not summarized] 1712 1713 1714 Release 2010k - 2010-07-26 10:42:27 -0400 1715 1716 [not summarized] 1717 1718 1719 Release 2010j - 2010-05-10 09:07:48 -0400 1720 1721 changes for Baha de Banderas and for version naming 1722 1723 1724 Release data2010i - 2010-04-16 18:50:45 -0400 1725 1726 the end of DST in Morocco on 2010-08-08 1727 1728 1729 Release data2010h - 2010-04-05 09:58:56 -0400 1730 1731 [not summarized] 1732 1733 1734 Release data2010g - 2010-03-24 11:14:53 -0400 1735 1736 [not summarized] 1737 1738 1739 Release 2010f - 2010-03-22 09:45:46 -0400 1740 1741 [not summarized] 1742 1743 1744 Release data2010e - 2010-03-08 14:24:27 -0500 1745 1746 corrects the Dhaka bug found by Danvin Ruangchan 1747 1748 1749 Release data2010d - 2010-03-06 07:26:01 -0500 1750 1751 [not summarized] 1752 1753 1754 Release 2010c - 2010-03-01 09:20:58 -0500 1755 1756 changes including KRE's suggestion for earlier initialization of 1757 "goahead" and "goback" structure elements 1758 1759 1760 Release code2010a - 2010-02-16 10:40:04 -0500 1761 1762 [not summarized] 1763 1764 1765 Release data2010b - 2010-01-20 12:37:01 -0500 1766 1767 Mexico changes 1768 1769 1770 Release data2010a - 2010-01-18 08:30:04 -0500 1771 1772 changes to Dhaka 1773 1774 1775 Release data2009u - 2009-12-26 08:32:28 -0500 1776 1777 changes to DST in Bangladesh 1778 1779 1780 Release 2009t - 2009-12-21 13:24:27 -0500 1781 1782 [not summarized] 1783 1784 1785 Release data2009s - 2009-11-14 10:26:32 -0500 1786 1787 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 1788 1789 1790 Release 2009r - 2009-11-09 10:10:31 -0500 1791 1792 "antarctica" and "tz-link.htm" changes 1793 1794 1795 Release 2009q - 2009-11-02 09:12:40 -0500 1796 1797 with two corrections as reported by Eric Muller and Philip Newton 1798 1799 1800 Release data2009p - 2009-10-23 15:05:27 -0400 1801 1802 Argentina (including San Luis) changes (with the correction from 1803 Mariano Absatz) 1804 1805 1806 Release data2009o - 2009-10-14 16:49:38 -0400 1807 1808 Samoa (commentary only), Pakistan, and Bangladesh changes 1809 1810 1811 Release data2009n - 2009-09-22 15:13:38 -0400 1812 1813 added commentary for Argentina and a change to the end of DST in 1814 2009 in Pakistan 1815 1816 1817 Release data2009m - 2009-09-03 10:23:43 -0400 1818 1819 Samoa and Palestine changes 1820 1821 1822 Release data2009l - 2009-08-14 09:13:07 -0400 1823 1824 Samoa (comments only) and Egypt 1825 1826 1827 Release 2009k - 2009-07-20 09:46:08 -0400 1828 1829 [not summarized] 1830 1831 1832 Release data2009j - 2009-06-15 06:43:59 -0400 1833 1834 Bangladesh change (with a short turnaround since the DST change is 1835 impending) 1836 1837 1838 Release 2009i - 2009-06-08 09:21:22 -0400 1839 1840 updating for DST in Bangladesh this year 1841 1842 1843 Release 2009h - 2009-05-26 09:19:14 -0400 1844 1845 [not summarized] 1846 1847 1848 Release data2009g - 2009-04-20 16:34:07 -0400 1849 1850 Cairo 1851 1852 1853 Release data2009f - 2009-04-10 11:00:52 -0400 1854 1855 correct DST in Pakistan 1856 1857 1858 Release 2009e - 2009-04-06 09:08:11 -0400 1859 1860 [not summarized] 1861 1862 1863 Release 2009d - 2009-03-23 09:38:12 -0400 1864 1865 Morocco, Tunisia, Argentina, and American Astronomical Society changes 1866 1867 1868 Release data2009c - 2009-03-16 09:47:51 -0400 1869 1870 change to the start of Cuban DST 1871 1872 1873 Release 2009b - 2009-02-09 11:15:22 -0500 1874 1875 [not summarized] 1876 1877 1878 Release 2009a - 2009-01-21 10:09:39 -0500 1879 1880 [not summarized] 1881 1882 1883 Release data2008i - 2008-10-21 12:10:25 -0400 1884 1885 southamerica and zone.tab files, with Argentina DST rule changes and 1886 United States zone reordering and recommenting 1887 1888 1889 Release 2008h - 2008-10-13 07:33:56 -0400 1890 1891 [not summarized] 1892 1893 1894 Release 2008g - 2008-10-06 09:03:18 -0400 1895 1896 Fix a broken HTML anchor and update Brazil's DST transitions; 1897 there's also a slight reordering of information in tz-art.htm. 1898 1899 1900 Release data2008f - 2008-09-09 22:33:26 -0400 1901 1902 [not summarized] 1903 1904 1905 Release 2008e - 2008-07-28 14:11:17 -0400 1906 1907 changes by Arthur David Olson and Jesper Nrgaard Welen 1908 1909 1910 Release data2008d - 2008-07-07 09:51:38 -0400 1911 1912 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 1913 1914 1915 Release data2008c - 2008-05-19 17:48:03 -0400 1916 1917 Pakistan, Morocco, and Mongolia 1918 1919 1920 Release data2008b - 2008-03-24 08:30:59 -0400 1921 1922 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 1923 link provided 1924 1925 1926 Release 2008a - 2008-03-08 05:42:16 -0500 1927 1928 [not summarized] 1929 1930 1931 Release 2007k - 2007-12-31 10:25:22 -0500 1932 1933 most importantly, changes to the "southamerica" file based on 1934 Argentina's readoption of daylight saving time 1935 1936 1937 Release 2007j - 2007-12-03 09:51:01 -0500 1938 1939 1. eliminate the "P" (parameter) macro; 1940 1941 2. the "noncontroversial" changes circulated on the time zone 1942 mailing list (less the changes to "logwtmp.c"); 1943 1944 3. eliminate "too many transition" errors when "min" is used in time 1945 zone rules; 1946 1947 4. changes by Paul Eggert (including updated information for Venezuela). 1948 1949 1950 Release data2007i - 2007-10-30 10:28:11 -0400 1951 1952 changes for Cuba and Syria 1953 1954 1955 Release 2007h - 2007-10-01 10:05:51 -0400 1956 1957 changes by Paul Eggert, as well as an updated link to the ICU 1958 project in tz-link.htm 1959 1960 1961 Release 2007g - 2007-08-20 10:47:59 -0400 1962 1963 changes by Paul Eggert 1964 1965 The "leapseconds" file has been updated to incorporate the most 1966 recent International Earth Rotation and Reference Systems Service 1967 (IERS) bulletin. 1968 1969 There's an addition to tz-art.htm regarding the television show "Medium". 1970 1971 1972 Release 2007f - 2007-05-07 10:46:46 -0400 1973 1974 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 1975 Zealand) 1976 1977 changes to zic.c to allow hour values greater than 24 (along with 1978 Paul's improved time value overflow checking) 1979 1980 1981 Release 2007e - 2007-04-02 10:11:52 -0400 1982 1983 Syria and Honduras changes by Paul Eggert 1984 1985 zic.c variable renaming changes by Arthur David Olson 1986 1987 1988 Release 2007d - 2007-03-20 08:48:30 -0400 1989 1990 changes by Paul Eggert 1991 1992 the elimination of white space at the ends of lines 1993 1994 1995 Release 2007c - 2007-02-26 09:09:37 -0500 1996 1997 changes by Paul Eggert 1998 1999 2000 Release 2007b - 2007-02-12 09:34:20 -0500 2001 2002 Paul Eggert's proposed change to the quotation handling logic in zic.c. 2003 2004 changes to the commentary in "leapseconds" reflecting the IERS 2005 announcement that there is to be no positive leap second at the end 2006 of June 2007. 2007 2008 2009 Release 2007a - 2007-01-08 12:28:29 -0500 2010 2011 changes by Paul Eggert 2012 2013 Derick Rethan's Asmara change 2014 2015 Oscar van Vlijmen's Easter Island local mean time change 2016 2017 symbolic link changes 2018 2019 2020 Release 2006p - 2006-11-27 08:54:27 -0500 2021 2022 changes by Paul Eggert 2023 2024 2025 Release 2006o - 2006-11-06 09:18:07 -0500 2026 2027 changes by Paul Eggert 2028 2029 2030 Release 2006n - 2006-10-10 11:32:06 -0400 2031 2032 changes by Paul Eggert 2033 2034 2035 Release 2006m - 2006-10-02 15:32:35 -0400 2036 2037 changes for Uruguay, Palestine, and Egypt by Paul Eggert 2038 2039 (minimalist) changes to zic.8 to clarify "until" information 2040 2041 2042 Release data2006l - 2006-09-18 12:58:11 -0400 2043 2044 Paul's best-effort work on this coming weekend's Egypt time change 2045 2046 2047 Release 2006k - 2006-08-28 12:19:09 -0400 2048 2049 changes by Paul Eggert 2050 2051 2052 Release 2006j - 2006-08-21 09:56:32 -0400 2053 2054 changes by Paul Eggert 2055 2056 2057 Release code2006i - 2006-08-07 12:30:55 -0400 2058 2059 localtime.c fixes 2060 2061 Ken Pizzini's conversion script 2062 2063 2064 Release code2006h - 2006-07-24 09:19:37 -0400 2065 2066 adds public domain notices to four files 2067 2068 includes a fix for transition times being off by a second 2069 2070 adds a new recording to the "arts" file (information courtesy Colin Bowern) 2071 2072 2073 Release 2006g - 2006-05-08 17:18:09 -0400 2074 2075 northamerica changes by Paul Eggert 2076 2077 2078 Release 2006f - 2006-05-01 11:46:00 -0400 2079 2080 a missing version number problem is fixed (with thanks to Bradley 2081 White for catching the problem) 2082 2083 2084 Release 2006d - 2006-04-17 14:33:43 -0400 2085 2086 changes by Paul Eggert 2087 2088 added new items to tz-arts.htm that were found by Paul 2089 2090 2091 Release 2006c - 2006-04-03 10:09:32 -0400 2092 2093 two sets of data changes by Paul Eggert 2094 2095 a fencepost error fix in zic.c 2096 2097 changes to zic.c and the "europe" file to minimize differences 2098 between output produced by the old 32-bit zic and the new 64-bit 2099 version 2100 2101 2102 Release 2006b - 2006-02-20 10:08:18 -0500 2103 [tz32code2006b + tz64code2006b + tzdata2006b] 2104 2105 64-bit code 2106 2107 All SCCS IDs were bumped to "8.1" for this release. 2108 2109 2110 Release 2006a - 2006-01-30 08:59:31 -0500 2111 2112 changes by Paul Eggert (in particular, Indiana time zone moves) 2113 2114 an addition to the zic manual page to describe how special-case 2115 transitions are handled 2116 2117 2118 Release 2005r - 2005-12-27 09:27:13 -0500 2119 2120 Canadian changes by Paul Eggert 2121 2122 They also add "<pre>" directives to time zone data files and reflect 2123 changes to warning message logic in "zdump.c" (but with calls to 2124 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2125 2126 2127 Release 2005q - 2005-12-13 09:17:09 -0500 2128 2129 Nothing earth-shaking here: 2130 1. Electronic mail addresses have been removed. 2131 2. Casts of the return value of exit have been removed. 2132 3. Casts of the argument of is.* macros have been added. 2133 4. Indentation in one section of zic.c has been fixed. 2134 5. References to dead URLs in the data files have been dealt with. 2135 2136 2137 Release 2005p - 2005-12-05 10:30:53 -0500 2138 2139 "systemv", "tz-link.htm", and "zdump.c" changes 2140 (less the casts of arguments to the is* macros) 2141 2142 2143 Release 2005o - 2005-11-28 10:55:26 -0500 2144 2145 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2146 2147 zdump.c lint fixes by Arthur David Olson 2148 2149 2150 Release 2005n - 2005-10-03 09:44:09 -0400 2151 2152 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2153 et al. changes) 2154 2155 2156 Release 2005m - 2005-08-29 12:15:40 -0400 2157 2158 changes by Paul Eggert (with a small tweak to the tz-art change) 2159 2160 a declaration of an unused variable has been removed from zdump.c 2161 2162 2163 Release 2005l - 2005-08-22 12:06:39 -0400 2164 2165 changes by Paul Eggert 2166 2167 overflow/underflow checks by Arthur David Olson, minus changes to 2168 the "Theory" file about the pending addition of 64-bit data (I grow 2169 less confident of the changes being accepted with each passing day, 2170 and the changes no longer increase the data files nine-fold--there's 2171 less than a doubling in size by my local Sun's reckoning) 2172 2173 2174 Release 2005k - 2005-07-14 14:14:24 -0400 2175 2176 The "leapseconds" file has been edited to reflect the recently 2177 announced leap second at the end of 2005. 2178 2179 I've also deleted electronic mail addresses from the files as an 2180 anti-spam measure. 2181 2182 2183 Release 2005j - 2005-06-13 14:34:13 -0400 2184 2185 These reflect changes to limit the length of time zone abbreviations 2186 and the characters used in those abbreviations. 2187 2188 There are also changes to handle POSIX-style "quoted" time zone 2189 environment variables. 2190 2191 The changes were circulated on the time zone mailing list; the only 2192 change since then was the removal of a couple of minimum-length of 2193 abbreviation checks. 2194 2195 2196 Release data2005i - 2005-04-21 15:04:16 -0400 2197 2198 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2199 2200 2201 Release 2005h - 2005-04-04 11:24:47 -0400 2202 2203 changes by Paul Eggert 2204 2205 minor changes to Makefile and zdump.c to produce more useful output 2206 when doing a "make typecheck" 2207 2208 2209 Release 2005g - 2005-03-14 10:11:21 -0500 2210 2211 changes by Paul Eggert (a change to current DST rules in Uruguay and 2212 an update to a link to time zone software) 2213 2214 2215 Release 2005f - 2005-03-01 08:45:32 -0500 2216 2217 data and documentation changes by Paul Eggert 2218 2219 2220 Release 2005e - 2005-02-10 15:59:44 -0500 2221 2222 [not summarized] 2223 2224 2225 Release code2005d - 2005-01-31 09:21:47 -0500 2226 2227 make zic complain about links to links if the -v flag is used 2228 2229 have "make public" do more code checking 2230 2231 add an include to "localtime.c" for the benefit of gcc systems 2232 2233 2234 Release 2005c - 2005-01-17 18:36:29 -0500 2235 2236 get better results when mktime runs on a system where time_t is double 2237 2238 changes to the data files (most importantly to Paraguay) 2239 2240 2241 Release 2005b - 2005-01-10 09:19:54 -0500 2242 2243 Get localtime and gmtime working on systems with exotic time_t types. 2244 2245 Update the leap second commentary in the "leapseconds" file. 2246 2247 2248 Release 2005a - 2005-01-01 13:13:44 -0500 2249 2250 [not summarized] 2251 2252 2253 Release code2004i - 2004-12-14 13:42:58 -0500 2254 2255 Deal with systems where time_t is unsigned. 2256 2257 2258 Release code2004h - 2004-12-07 11:40:18 -0500 2259 2260 64-bit-time_t changes 2261 2262 2263 Release 2004g - 2004-11-02 09:06:01 -0500 2264 2265 update to Cuba (taking effect this weekend) 2266 2267 other changes by Paul Eggert 2268 2269 correction of the spelling of Oslo 2270 2271 changed versions of difftime.c and private.h 2272 2273 2274 Release code2004f - 2004-10-21 10:25:22 -0400 2275 2276 Cope with wide-ranging tm_year values. 2277 2278 2279 Release 2004e - 2004-10-11 14:47:21 -0400 2280 2281 Brazil/Argentina/Israel changes by Paul Eggert 2282 2283 changes to tz-link.htm by Paul 2284 2285 one small fix to Makefile 2286 2287 2288 Release 2004d - 2004-09-22 08:27:29 -0400 2289 2290 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2291 2292 2293 Release 2004c - 2004-08-11 12:06:26 -0400 2294 2295 asctime-related changes 2296 2297 (variants of) some of the documentation changes suggested by Paul Eggert 2298 2299 2300 Release 2004b - 2004-07-19 14:33:35 -0400 2301 2302 data changes by Paul Eggert - most importantly, updates for Argentina 2303 2304 2305 Release 2004a - 2004-05-27 12:00:47 -0400 2306 2307 changes by Paul Eggert 2308 2309 Handle DST transitions that occur at the end of a month in some 2310 years but at the start of the following month in other years. 2311 2312 Add a copy of the correspondence that's the basis for claims about 2313 DST in the Navajo Nation. 2314 2315 2316 Release 2003e - 2003-12-15 09:36:47 -0500 2317 2318 changes by Arthur David Olson (primarily code changes) 2319 2320 changes by Paul Eggert (primarily data changes) 2321 2322 minor changes to "Makefile" and "northamerica" (in the latter case, 2323 optimization of the "Toronto" rules) 2324 2325 2326 Release 2003d - 2003-10-06 09:34:44 -0400 2327 2328 changes by Paul Eggert 2329 2330 2331 Release 2003c - 2003-09-16 10:47:05 -0400 2332 2333 Fix bad returns in zic.c's inleap function. 2334 Thanks to Bradley White for catching the problem! 2335 2336 2337 Release 2003b - 2003-09-16 07:13:44 -0400 2338 2339 Add a "--version" option (and documentation) to the zic and zdump commands. 2340 2341 changes to overflow/underflow checking in zic 2342 2343 a localtime typo fix. 2344 2345 Update the leapseconds and tz-art.htm files. 2346 2347 2348 Release 2003a - 2003-03-24 09:30:54 -0500 2349 2350 changes by Paul Eggert 2351 2352 a few additions and modifications to the tz-art.htm file 2353 2354 2355 Release 2002d - 2002-10-15 13:12:42 -0400 2356 2357 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2358 2359 There's also a new time zone quote in "tz-art.htm". 2360 2361 2362 Release 2002c - 2002-04-04 11:55:20 -0500 2363 2364 changes by Paul Eggert 2365 2366 Change zic.c to avoid creating symlinks to files that don't exist. 2367 2368 2369 Release 2002b - 2002-01-28 12:56:03 -0500 2370 2371 [These change notes are for Release 2002a, which was corrupted. 2372 2002b was a corrected version of 2002a.] 2373 2374 changes by Paul Eggert 2375 2376 Update the "leapseconds" file to note that there'll be no leap 2377 second at the end of June, 2002. 2378 2379 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2380 2381 Change to "difftime.c" to avoid sizeof problems. 2382 2383 2384 Release 2001d - 2001-10-09 13:31:32 -0400 2385 2386 changes by Paul Eggert 2387 2388 2389 Release 2001c - 2001-06-05 13:59:55 -0400 2390 2391 changes by Paul Eggert and Andrew Brown 2392 2393 2394 Release 2001b - 2001-04-05 16:44:38 -0400 2395 2396 changes by Paul Eggert (modulo jnorgard's typo fix) 2397 2398 tz-art.htm has been HTMLified. 2399 2400 2401 Release 2001a - 2001-03-13 12:57:44 -0500 2402 2403 changes by Paul Eggert 2404 2405 An addition to the "leapseconds" file: comments with the text of the 2406 latest IERS leap second notice. 2407 2408 Trailing white space has been removed from data file lines, and 2409 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2410 converted to tabs. 2411 2412 2413 Release 2000h - 2000-12-14 15:33:38 -0500 2414 2415 changes by Paul Eggert 2416 2417 one typo fix in the "art" file 2418 2419 With providence, this is the last update of the millennium. 2420 2421 2422 Release 2000g - 2000-10-10 11:35:22 -0400 2423 2424 changes by Paul Eggert 2425 2426 correction of John Mackin's name submitted by Robert Elz 2427 2428 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2429 Emmy Awards broadcast. 2430 2431 2432 Release 2000f - 2000-08-10 09:31:58 -0400 2433 2434 changes by Paul Eggert 2435 2436 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2437 2438 Error checking and messages in the "yearistype" script have been 2439 improved. 2440 2441 2442 Release 2000e - 2000-07-31 09:27:54 -0400 2443 2444 data changes by Paul Eggert 2445 2446 a change to the default value of the defined constant HAVE_STRERROR 2447 2448 the addition of a Dave Barry quote on DST to the tz-arts file 2449 2450 2451 Release 2000d - 2000-04-20 15:43:04 -0400 2452 2453 changes to the documentation and code of strftime for C99 conformance 2454 2455 a bug fix for date.c 2456 2457 These are based on (though modified from) changes by Paul Eggert. 2458 2459 2460 Release 2000c - 2000-03-04 10:31:43 -0500 2461 2462 changes by Paul Eggert 2463 2464 2465 Release 2000b - 2000-02-21 12:16:29 -0500 2466 2467 changes by Paul Eggert and Joseph Myers 2468 2469 modest tweaks to the tz-art.htm and tz-link.htm files 2470 2471 2472 Release 2000a - 2000-01-18 09:21:26 -0500 2473 2474 changes by Paul Eggert 2475 2476 The two hypertext documents have also been renamed. 2477 2478 2479 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2480 2481 Paul Eggert's changes 2482 2483 additions to the "zic" manual page and the "Arts.htm" file 2484 2485 2486 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2487 2488 [not summarized] 2489 2490 2491 Release data1999h - 1999-10-07 03:50:29 -0400 2492 2493 changes by Paul Eggert to "europe" (most importantly, fixing 2494 Lithuania and Estonia) 2495 2496 2497 Release 1999g - 1999-09-28 11:06:18 -0400 2498 2499 data changes by Paul Eggert (most importantly, the change for 2500 Lebanon that buys correctness for this coming Sunday) 2501 2502 The "code" file contains changes to "Makefile" and "checktab.awk" to 2503 allow better checking of time zone files before they are published. 2504 2505 2506 Release 1999f - 1999-09-23 09:48:14 -0400 2507 2508 changes by Arthur David Olson and Paul Eggert 2509 2510 2511 Release 1999e - 1999-08-17 15:20:54 -0400 2512 2513 changes circulated by Paul Eggert, although the change to handling 2514 of DST-specifying time zone names has been commented out for now 2515 (search for "XXX" in "localtime.c" for details). These files also 2516 do not make any changes to the start of DST in Brazil. 2517 2518 In addition to Paul's changes, there are updates to "Arts.htm" and 2519 cleanups of URLs. 2520 2521 2522 Release 1999d - 1999-03-30 11:31:07 -0500 2523 2524 changes by Paul Eggert 2525 2526 The Makefile's "make public" rule has also been changed to do a test 2527 compile of each individual time zone data file (which should help 2528 avoid problems such as the one we had with Nicosia). 2529 2530 2531 Release 1999c - 1999-03-25 09:47:47 -0500 2532 2533 changes by Paul Eggert, most importantly the change for Chile. 2534 2535 2536 Release 1999b - 1999-02-01 17:51:44 -0500 2537 2538 changes by Paul Eggert 2539 2540 code changes (suggested by Mani Varadarajan, mani at be.com) for 2541 correct handling of symbolic links when building using a relative directory 2542 2543 code changes to generate correct messages for failed links 2544 2545 updates to the URLs in Arts.htm 2546 2547 2548 Release 1999a - 1999-01-19 16:20:29 -0500 2549 2550 error message internationalizations and corrections in zic.c and 2551 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2552 to whom thanks!) 2553 2554 2555 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2556 2557 changes for Brazil, Chile, and Germany 2558 2559 support for use of "24:00" in the input files for the time zone compiler 2560 2561 2562 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2563 2564 changes by Paul Eggert 2565 2566 correction to a define in the "private.h" file 2567 2568 2569 Release data1998g - 1998-08-11 03:28:35 -0000 2570 [tzdata1998g.tar.gz is missing!] 2571 2572 Lithuanian change provided by mgedmin at pub.osf.it 2573 2574 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2575 "backward") to ensure that the GMT file is created even where folks 2576 don't want the "backward" links (as suggested by Paul Eggert). 2577 2578 2579 Release data1998f - 1998-07-20 13:50:00 -0000 2580 [tzdata1998f.tar.gz is missing!] 2581 2582 Update the "leapseconds" file to include the newly-announced 2583 insertion at the end of 1998. 2584 2585 2586 Release code1998f - 1998-06-01 10:18:31 -0400 2587 2588 addition to localtime.c by Guy Harris 2589 2590 2591 Release 1998e - 1998-05-28 09:56:26 -0400 2592 2593 The Makefile is changed to produce zoneinfo-posix rather than 2594 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2595 zoneinfo/right. 2596 2597 data changes by Paul Eggert 2598 2599 changes from Guy Harris to provide asctime_r and ctime_r 2600 2601 A usno1998 file (substantially identical to usno1997) has been added. 2602 2603 2604 Release 1998d - 1998-05-14 11:58:34 -0400 2605 2606 changes to comments (in particular, elimination of references to CIA maps). 2607 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2608 where changes occur. 2609 2610 2611 Release 1998c - 1998-02-28 12:32:26 -0500 2612 2613 changes by Paul Eggert (save the "French correction," on which I'll 2614 wait for the dust to settle) 2615 2616 symlink changes 2617 2618 changes and additions to Arts.htm 2619 2620 2621 Release 1998b - 1998-01-17 14:31:51 -0500 2622 2623 URL cleanups and additions 2624 2625 2626 Release 1998a - 1998-01-13 12:37:35 -0500 2627 2628 changes by Paul Eggert 2629 2630 2631 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 2632 2633 changes by Paul Eggert, with minor modifications from Arthur David 2634 Olson to make the files more browser friendly 2635 2636 2637 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 2638 2639 minor changes to put "TZif" at the start of each time zone information file 2640 2641 a rule has also been added to the Makefile so you can 2642 make zones 2643 to just recompile the zone information files (rather than doing a 2644 full "make install" with its other effects). 2645 2646 2647 Release data1997i - 1997-10-07 08:45:38 -0400 2648 2649 changes to Africa by Paul Eggert 2650 2651 2652 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 2653 2654 corrections for Uruguay (and other locations) 2655 2656 Arthur David Olson's simple-minded fix allowing mktime to both 2657 correctly handle leap seconds and correctly handle tm_sec values 2658 upon which arithmetic has been performed. 2659 2660 2661 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 2662 2663 Paul Eggert's updates 2664 2665 a small change to a function prototype; 2666 2667 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 2668 include information on Around the World in Eighty Days. 2669 2670 2671 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 2672 2673 fixes to zic's error handling 2674 2675 changes inspired by the item circulated on Slovenia 2676 2677 The description of Web resources has been HTMLified for browsing 2678 convenience. 2679 2680 A new piece of tz-related music has been added to the "Music" file. 2681 2682 2683 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 2684 2685 Paul Eggert's latest suggestions 2686 2687 2688 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 2689 2690 changes to "zic.c" to correct performance of the "-s" option 2691 2692 a new file "usno1997" 2693 2694 2695 Release data1997c - 1997-03-04 09:58:18 -0500 2696 2697 changes in Israel 2698 2699 2700 Release 1997b - 1997-02-27 18:34:19 -0500 2701 2702 The data file incorporates the 1997 leap second. 2703 2704 The code file incorporates Arthur David Olson's take on the 2705 zic/multiprocessor/directory-creation situation. 2706 2707 2708 Release 1997a - 1997-01-21 09:11:10 -0500 2709 2710 Paul Eggert's Antarctica (and other changes) 2711 2712 Arthur David Olson finessed the "getopt" issue by checking against 2713 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 2714 is returned while SunOS 5.5's manual says EOF is returned). 2715 2716 2717 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 2718 2719 Paul Eggert's latest changes 2720 2721 2722 Release code1996n - 1996-12-16 09:42:02 -0500 2723 2724 link snapping fix from Bruce Evans (via Garrett Wollman) 2725 2726 2727 Release data1996m - 1996-11-24 02:37:34 -0000 2728 [tzdata1996m.tar.gz is missing!] 2729 2730 Paul Eggert's batch of changes 2731 2732 2733 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 2734 2735 No functional changes here; the files have simply been changed to 2736 make more use of ISO style dates in comments. The names of the above 2737 files now include the year in full. 2738 2739 2740 Release code96l - 1996-09-08 17:12:20 -0400 2741 2742 tzcode96k was missing a couple of pieces. 2743 2744 2745 Release 96k - 1996-09-08 16:06:22 -0400 2746 2747 the latest round of changes from Paul Eggert 2748 2749 the recent Year 2000 material 2750 2751 2752 Release code96j - 1996-07-30 13:18:53 -0400 2753 2754 Set sp->typecnt as suggested by Timothy Patrick Murphy. 2755 2756 2757 Release code96i - 1996-07-27 20:11:35 -0400 2758 2759 Paul's suggested patch for strftime %V week numbers 2760 2761 2762 Release data96i - 1996-07-01 18:13:04 -0400 2763 2764 "northamerica" and "europe" changes by Paul Eggert 2765 2766 2767 Release code96h - 1996-06-05 08:02:21 -0400 2768 2769 fix for handling transitions specified in Universal Time 2770 2771 Some "public domain" notices have also been added. 2772 2773 2774 Release code96g - 1996-05-16 14:00:26 -0400 2775 2776 fix for the simultaneous-DST-and-zone-change challenge 2777 2778 2779 Release data96h - 1996-05-09 17:40:51 -0400 2780 2781 changes by Paul Eggert 2782 2783 2784 Release code96f-data96g - 1996-05-03 03:09:59 -0000 2785 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 2786 2787 The changes get us some of the way to fixing the problems noted in Paul 2788 Eggert's letter yesterday (in addition to a few others). The approach 2789 has been to make zic a bit smarter about figuring out what time zone 2790 abbreviations apply just after the time specified in the "UNTIL" part 2791 of a zone line. Putting the smarts in zic means avoiding having 2792 transition times show up in both "Zone" lines and "Rule" lines, which 2793 in turn avoids multiple transition time entries in time zone files. 2794 (This also makes the zic input files such as "europe" a bit shorter and 2795 should ease maintenance.) 2796 2797 2798 Release data96f - 1996-04-19 19:20:03 -0000 2799 [tzdata96f.tar.gz is missing!] 2800 2801 The only changes are to the "northamerica" file; the time zone 2802 abbreviation for Denver is corrected to MST (and MDT), and the 2803 comments for Mexico have been updated. 2804 2805 2806 Release data96e - 1996-03-19 17:37:26 -0500 2807 2808 Proposals by Paul Eggert, in particular the Portugal change that 2809 comes into play at the end of this month. 2810 2811 2812 Release data96d - 1996-03-18 20:49:39 -0500 2813 2814 [not summarized] 2815 2816 2817 Release code96e - 1996-02-29 15:43:27 -0000 2818 [tzcode96e.tar.gz is missing!] 2819 2820 internationalization changes and the fix to the documentation for strftime 2821 2822 2823 Release code96d-data96c - 1996-02-12 11:05:27 -0500 2824 2825 The "code" file simply updates Bob Kridle's electronic address. 2826 2827 The "data" file updates rules for Mexico. 2828 2829 2830 Release data96b - 1996-01-27 15:44:42 -0500 2831 2832 Kiribati change 2833 2834 2835 Release code96c - 1996-01-16 16:58:15 -0500 2836 2837 leap-year streamlining and binary-search changes 2838 2839 fix to newctime.3 2840 2841 2842 Release code96b - 1996-01-10 20:42:39 -0500 2843 2844 fixes and enhancements from Paul Eggert, including code that 2845 emulates the behavior of recent versions of the SunOS "date" 2846 command. 2847 2848 2849 Release 96a - 1996-01-06 09:08:24 -0500 2850 2851 Israel updates 2852 2853 fixes to strftime.c for correct ISO 8601 week number generation, 2854 plus support for two new formats ('G' and 'g') to give ISO 8601 year 2855 numbers (which are not necessarily the same as calendar year numbers) 2856 2857 2858 Release code95i-data95m - 1995-12-21 12:46:47 -0500 2859 2860 The latest revisions from Paul Eggert are included, the usno1995 2861 file has been updated, and a new file ("WWW") covering useful URLs 2862 has been added. 2863 2864 2865 Release code95h-data95l - 1995-12-19 18:10:12 -0500 2866 2867 A simplification of a macro definition, a change to data for Sudan, 2868 and (for last minute shoppers) notes in the "Music" file on the CD 2869 "Old Man Time". 2870 2871 2872 Release code95g-data95k - 1995-10-30 10:32:47 -0500 2873 2874 (slightly reformatted) 8-bit-clean proposed patch 2875 2876 minor patch: US/Eastern -> America/New_York 2877 2878 snapshot of the USNO's latest data ("usno1995") 2879 2880 some other minor cleanups 2881 2882 2883 Release code95f-data95j - 1995-10-28 21:01:34 -0000 2884 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 2885 2886 European cleanups 2887 2888 support for 64-bit time_t's 2889 2890 optimization in localtime.c 2891 2892 2893 Release code95e - 1995-10-13 13:23:57 -0400 2894 2895 the mktime change to scan from future to past when trying to find time zone 2896 offsets 2897 2898 2899 Release data95i - 1995-09-26 10:43:26 -0400 2900 2901 For Canada/Central, guess that the Sun customer's "one week too 2902 early" was just a approximation, and the true error is one month 2903 too early. This is consistent with the rest of Canada. 2904 2905 2906 Release data95h - 1995-09-21 11:26:48 -0400 2907 2908 latest changes from Paul Eggert 2909 2910 2911 Release code95d - 1995-09-14 11:14:45 -0400 2912 2913 the addition of a "Music" file, which documents four recorded 2914 versions of the tune "Save That Time". 2915 2916 2917 Release data95g - 1995-09-01 17:21:36 -0400 2918 2919 "yearistype" correction 2920 2921 2922 Release data95f - 1995-08-28 20:46:56 -0400 2923 2924 Paul Eggert's change to the australasia file 2925 2926 2927 Release data95e - 1995-07-08 18:02:34 -0400 2928 2929 The only change is a leap second at the end of this year. 2930 Thanks to Bradley White for forwarding news on the leap second. 2931 2932 2933 Release data95d - 1995-07-03 13:26:22 -0400 2934 2935 Paul Eggert's changes 2936 2937 2938 Release data95c - 1995-07-02 19:19:28 -0400 2939 2940 changes to "asia", "backward", "europe", and "southamerica" 2941 (read: northamericacentrics need not apply) 2942 2943 2944 Release code95c - 1995-03-13 14:00:46 -0500 2945 2946 one-line fix for sign extension problems in detzcode 2947 2948 2949 Release 95b - 1995-03-04 11:22:38 -0500 2950 2951 Minor changes in both: 2952 2953 The "code" file contains a workaround for the lack of "unistd.h" in 2954 Microsoft C++ version 7. 2955 2956 The "data" file contains a fixed "Link" for America/Shiprock. 2957 2958 2959 Release 94h - 1994-12-10 12:51:14 -0500 2960 2961 The files: 2962 2963 * incorporate the changes to "zdump" and "date" to make changes to 2964 the "TZ" environment variable permanent; 2965 2966 * incorporate the table changes by Paul Eggert; 2967 2968 * include (and document) support for universal time specifications in 2969 data files - but do not (yet) include use of this feature in the 2970 data files. 2971 2972 Think of this as "TZ Classic" - the software has been set up not to break if 2973 universal time shows up in its input, and data entries have been 2974 left as is so as not to break existing implementations. 2975 2976 2977 Release data94f - 1994-08-20 12:56:09 -0400 2978 2979 (with thanks!) the latest data updates from Paul Eggert 2980 2981 2982 Release data94e - 1994-06-04 13:13:53 -0400 2983 2984 [not summarized] 2985 2986 2987 Release code94g - 1994-05-05 12:14:07 -0400 2988 2989 fix missing "optind.c" and a reference to it in the Makefile 2990 2991 2992 Release code94f - 1994-05-05 13:00:33 -0000 2993 [tzcode94f.tar.gz is missing!] 2994 2995 changes to avoid overflow in difftime, as well as changes to cope 2996 with the 52/53 challenge in strftime 2997 2998 2999 Release code94e - 1994-03-30 23:32:59 -0500 3000 3001 change for the benefit of PCTS 3002 3003 3004 Release 94d - 1994-02-24 15:42:25 -0500 3005 3006 Avoid clashes with POSIX semantics for zones such as GMT+4. 3007 3008 Some other very minor housekeeping is also present. 3009 3010 3011 Release code94c - 1994-02-10 08:52:40 -0500 3012 3013 Fix bug where mkdirs was broken unless you compile with 3014 -fwritable-strings (which is generally losing to do). 3015 3016 3017 Release 94b - 1994-02-07 10:04:33 -0500 3018 3019 work by Paul Eggert who notes: 3020 3021 I found another book of time zone histories by E W Whitman; it's not 3022 as extensive as Shanks but has a few goodies of its own. I used it 3023 to update the tables. I also fixed some more as a result of 3024 correspondence with Adam David and Peter Ilieve, and move some stray 3025 links from 'europe' to 'backward'. I corrected some scanning errors 3026 in usno1989. 3027 3028 As far as the code goes, I fixed zic to allow years in the range 3029 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 3030 And I cleaned up the zic documentation a little bit. 3031 3032 3033 Release data94a - 1994-02-03 08:58:54 -0500 3034 3035 It simply incorporates the recently announced leap second into the 3036 "leapseconds" file. 3037 3038 3039 Release 93g - 1993-11-22 17:28:27 -0500 3040 3041 Paul Eggert has provided a good deal of historic information (based 3042 on Shanks), and there are some code changes to deal with the buglets 3043 that crawled out in dealing with the new information. 3044 3045 3046 Release 93f - 1993-10-15 12:27:46 -0400 3047 3048 Paul Eggert's changes 3049 3050 3051 Release 93e - 1993-09-05 21:21:44 -0400 3052 3053 This has updated data for Israel, England, and Kwajalein. There's 3054 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 3055 Thanks to Paul Eggert and Peter Ilieve for the changes. 3056 3057 3058 Release 93d - 1993-06-17 23:34:17 -0400 3059 3060 new fix and new data on Israel 3061 3062 3063 Release 93c - 1993-06-06 19:31:55 -0400 3064 3065 [not summarized] 3066 3067 3068 Release 93b - 1993-02-02 14:53:58 -0500 3069 3070 updated "leapseconds" file 3071 3072 3073 Release 93 - 1993-01-08 07:01:06 -0500 3074 3075 At kre's suggestion, the package has been split in two - a code piece 3076 (which also includes documentation) that's only of use to folks who 3077 want to recompile things and a data piece useful to anyone who can 3078 run "zic". 3079 3080 The new version has a few changes to the data files, a few 3081 portability changes, and an off-by-one fix (with thanks to 3082 Tom Karzes at deshaw.com for providing a description and a 3083 solution). 3084 3085 3086 Release 92c - 1992-11-21 17:35:36 -0000 3087 [tz92c.tar.Z is missing!] 3088 3089 The fallout from the latest round of DST transitions. 3090 3091 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3092 there's also a change to "zic.c" that makes it portable to more systems. 3093 3094 3095 Release 92 - 1992-04-25 18:17:03 -0000 3096 [tz92.tar.Z is missing!] 3097 3098 By popular demand (well, at any rate, following a request by kre at munnari) 3099 3100 3101 The 1989 update of the time zone package featured: 3102 3103 * POSIXization (including interpretation of POSIX-style TZ environment 3104 variables, provided by Guy Harris), 3105 * ANSIfication (including versions of "mktime" and "difftime"), 3106 * SVIDulation (an "altzone" variable) 3107 * MACHination (the "gtime" function) 3108 * corrections to some time zone data (including corrections to the rules 3109 for Great Britain and New Zealand) 3110 * reference data from the United States Naval Observatory for folks who 3111 want to do additional time zones 3112 * and the 1989 data for Saudi Arabia. 3113 3114 (Since this code will be treated as "part of the implementation" in some 3115 places and as "part of the application" in others, there's no good way to 3116 name functions, such as timegm, that are not part of the proposed ANSI C 3117 standard; such functions have kept their old, underscore-free names in this 3118 update.) 3119 3120 And the "dysize" function has disappeared; it was present to allow 3121 compilation of the "date" command on old BSD systems, and a version of "date" 3122 is now provided in the package. The "date" command is not created when you 3123 "make all" since it may lack options provided by the version distributed with 3124 your operating system, or may not interact with the system in the same way 3125 the native version does. 3126 3127 Since POSIX frowns on correct leap second handling, the default behavior of 3128 the "zic" command (in the absence of a "-L" option) has been changed to omit 3129 leap second information from its output files. 3130 3131 3132 ----- 3133 Notes 3134 3135 This file contains copies of the part of each release announcement 3136 that talks about the changes in that release. The text has been 3137 adapted and reformatted for the purposes of this file. 3138 3139 Typically a release R consists of a pair of tarball files, 3140 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3141 code2010a, data2012c) consist of just one or the other tarball, and a 3142 few (e.g., code2012c-data2012d) have tarballs with mixed version 3143 numbers. 3144 3145 Release time stamps are taken from the release's commit (for newer, 3146 git releases), from the newest file in the tarball (for older 3147 releases, where this info is available) or from the email announcing 3148 the release (if all else fails; these are marked with a time zone of 3149 -0000 and an "is missing!" comment). 3150 3151 Earlier versions of the code and data were not announced on the tz 3152 list and are not summarized here. 3153 3154 This file is in the public domain. 3155 3156 Local Variables: 3157 coding: utf-8 3158 End: 3159
Indexes created Mon Sep 29 21:09:56 GMT 2025