NEWS revision 1.13
1 News for the tz database 2 3 Release 2015f - 2015-08-10 18:06:56 -0700 4 5 Changes affecting future time stamps 6 7 North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) 8 The abbreviation remains "KST". (Thanks to Robert Elz.) 9 10 Uruguay no longer observes DST. (Thanks to Steffen Thorsen 11 and Pablo Camargo.) 12 13 Changes affecting past and future time stamps 14 15 Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. 16 (Thanks to Roman Tudos.) 17 18 Changes affecting data format and code 19 20 zic's '-y YEARISTYPE' option is no longer documented. The TYPE 21 field of a Rule line should now be '-'; the old values 'even', 22 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. 23 Although the implementation has not changed, these features do not 24 work in the default installation, they are not used in the data, 25 and they are now considered obsolescent. 26 27 zic now checks that two rules don't take effect at the same time. 28 (Thanks to Jon Skeet and Arthur David Olson.) Constraints on 29 simultaneity are now documented. 30 31 The two characters '%z' in a zone format now stand for the UTC 32 offset, e.g., '-07' for seven hours behind UTC and '+0530' for 33 five hours and thirty minutes ahead. This better supports time 34 zone abbreviations conforming to POSIX.1-2001 and later. 35 36 Changes affecting installed data files 37 38 Comments for America/Halifax and America/Glace_Bay have been improved. 39 (Thanks to Brian Inglis.) 40 41 Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, 42 Europe/Sofia, and Europe/Tallinn. This yields slightly smaller 43 installed data files for Europe/Simferopol and Europe/Tallinn. 44 It does not affect timestamps. (Thanks to Howard Hinnant.) 45 46 Changes affecting code 47 48 zdump and zic no longer warn about valid time zone abbreviations 49 like '-05'. 50 51 Some Visual Studio 2013 warnings have been suppressed. 52 (Thanks to Kees Dekker.) 53 54 'date' no longer sets the time of day and its -a, -d, -n and -t 55 options have been removed. Long obsolescent, the implementation 56 of these features had porting problems. Builders no longer need 57 to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. 58 (Thanks to Kees Dekker for pointing out the problem.) 59 60 Changes affecting documentation 61 62 The Theory file mentions naming issues earlier, as these seem to be 63 poorly publicized (thanks to Gilmore Davidson for reporting the problem). 64 65 tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). 66 67 Mention that Herbert Samuel introduced the term "Summer Time". 68 69 70 Release 2015e - 2015-06-13 10:56:02 -0700 71 72 Changes affecting future time stamps 73 74 Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, 75 not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.) 76 77 Assume Cayman Islands will observe DST starting next year, using US rules. 78 Although it isn't guaranteed, it is the most likely. 79 80 Changes affecting data format 81 82 The file 'iso3166.tab' now uses UTF-8, so that its entries can better 83 spell the names of land Islands, Cte d'Ivoire, and Runion. 84 85 Changes affecting code 86 87 When displaying data, tzselect converts it to the current locale's 88 encoding if the iconv command works. (Problem reported by random832.) 89 90 tzselect no longer mishandles Dominica, fixing a bug introduced 91 in Release 2014f. (Problem reported by Owen Leibman.) 92 93 zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\". 94 This fixes a bug introduced in Release 2014f. 95 (Problem reported by Leonardo Chiquitto.) 96 97 98 Release 2015d - 2015-04-24 08:09:46 -0700 99 100 Changes affecting future time stamps 101 102 Egypt will not observe DST in 2015 and will consider canceling it 103 permanently. For now, assume no DST indefinitely. 104 (Thanks to Ahmed Nazmy and Tim Parenti.) 105 106 Changes affecting past time stamps 107 108 America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not 109 1966-07-01. Also, Yukon's time zone history is documented better. 110 (Thanks to Brian Inglis and Dennis Ferguson.) 111 112 Change affecting past and future time zone abbreviations 113 114 The abbreviations for Hawaii-Aleutian standard and daylight times 115 have been changed from HAST/HADT to HST/HDT, as per US Government 116 Printing Office style. This affects only America/Adak since 1983, 117 as America/Honolulu was already using the new style. 118 119 Changes affecting code 120 121 zic has some minor performance improvements. 122 123 124 Release 2015c - 2015-04-11 08:55:55 -0700 125 126 Changes affecting future time stamps 127 128 Egypt's spring-forward transition is at 24:00 on April's last Thursday, 129 not 00:00 on April's last Friday. 2015's transition will therefore be on 130 Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 131 apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 132 133 Changes affecting past time stamps 134 135 The following changes affect some pre-1991 Chile-related time stamps 136 in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 137 138 The 1910 transition was January 10, not January 1. 139 140 The 1918 transition was September 10, not September 1. 141 142 The UTC-4 time observed from 1932 to 1942 is now considered to be 143 standard time, not year-round DST. 144 145 Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31, 146 then reverted to standard time, then switched its time zone to 147 UTC-5 on 1947-04-01. 148 149 Assume transitions before 1968 were at 00:00, since we have no data 150 saying otherwise. 151 152 The spring 1988 transition was 1988-10-09, not 1988-10-02. 153 The fall 1990 transition was 1990-03-11, not 1990-03-18. 154 155 Assume no UTC offset change for Pacific/Easter on 1890-01-01, 156 and omit all transitions on Pacific/Easter from 1942 through 1946 157 since we have no data suggesting that they existed. 158 159 One more zone has been turned into a link, as it differed 160 from an existing zone only for older time stamps. As usual, 161 this change affects UTC offsets in pre-1970 time stamps only. 162 The zone's old contents have been moved to the 'backzone' file. 163 The affected zone is America/Montreal. 164 165 Changes affecting commentary 166 167 Mention the TZUpdater tool. 168 169 Mention "The Time Now". (Thanks to Brandon Ramsey.) 170 171 172 Release 2015b - 2015-03-19 23:28:11 -0700 173 174 Changes affecting future time stamps 175 176 Mongolia will start observing DST again this year, from the last 177 Saturday in March at 02:00 to the last Saturday in September at 00:00. 178 (Thanks to Ganbold Tsagaankhuu.) 179 180 Palestine will start DST on March 28, not March 27. Also, 181 correct the fall 2014 transition from September 26 to October 24. 182 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 183 184 Changes affecting past time stamps 185 186 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 187 regression. (Thanks to Stuart Bishop for reporting the problem.) 188 189 Some more zones have been turned into links, when they differed 190 from existing zones only for older time stamps. As usual, 191 these changes affect UTC offsets in pre-1970 time stamps only. 192 Their old contents have been moved to the 'backzone' file. 193 The affected zones are: America/Antigua, America/Cayman, 194 Pacific/Midway, and Pacific/Saipan. 195 196 Changes affecting time zone abbreviations 197 198 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 199 (Thanks to Hank W.) 200 201 Changes affecting code 202 203 Fix integer overflow bug in reference 'mktime' implementation. 204 (Problem reported by Jrg Richter.) 205 206 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 207 to be used in the same executable as standard-library time_t functions. 208 (Problems reported by Bradley White.) 209 210 Changes affecting commentary 211 212 Cite the recent Mexican decree changing Quintana Roo's time zone. 213 (Thanks to Carlos Ral Perasso.) 214 215 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 216 217 Update info about Mars time. 218 219 220 Release 2015a - 2015-01-29 22:35:20 -0800 221 222 Changes affecting future time stamps 223 224 The Mexican state of Quintana Roo, represented by America/Cancun, 225 will shift from Central Time with DST to Eastern Time without DST 226 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 227 228 Chile will not change clocks in April or thereafter; its new standard time 229 will be its old daylight saving time. This affects America/Santiago, 230 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 231 232 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 233 (Thanks to Tim Parenti.) 234 235 Changes affecting past time stamps 236 237 Iceland observed DST in 1919 and 1921, and its 1939 fallback 238 transition was Oct. 29, not Nov. 29. Remove incorrect data from 239 Shanks about time in Iceland between 1837 and 1908. 240 241 Some more zones have been turned into links, when they differed 242 from existing zones only for older time stamps. As usual, 243 these changes affect UTC offsets in pre-1970 time stamps only. 244 Their old contents have been moved to the 'backzone' file. 245 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 246 and Asia/Muscat. 247 248 Changes affecting code 249 250 tzalloc now scrubs time zone abbreviations compatibly with the way 251 that tzset always has, by replacing invalid bytes with '_' and by 252 shortening too-long abbreviations. 253 254 tzselect ports to POSIX awk implementations, no longer mishandles 255 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 256 settings to the user. (Thanks to Stefan Kuhn.) 257 258 Changes affecting build procedure 259 260 'make check' now checks for links to links in the data. 261 One such link (for Africa/Asmera) has been fixed. 262 (Thanks to Stephen Colebourne for pointing out the problem.) 263 264 Changes affecting commentary 265 266 The leapseconds file commentary now mentions the expiration date. 267 (Problem reported by Martin Burnicki.) 268 269 Update Mexican Library of Congress URL. 270 271 272 Release 2014j - 2014-11-10 17:37:11 -0800 273 274 Changes affecting current and future time stamps 275 276 Turks & Caicos' switch from US eastern time to UTC-4 year-round 277 did not occur on 2014-11-02 at 02:00. It's currently scheduled 278 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 279 280 Changes affecting past time stamps 281 282 Many pre-1989 time stamps have been corrected for Asia/Seoul and 283 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 284 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 285 longer guess that Pyongyang mimicked Seoul time after World War II, 286 as this is politically implausible. 287 288 Some more zones have been turned into links, when they differed 289 from existing zones only for older time stamps. As usual, 290 these changes affect UTC offsets in pre-1970 time stamps only. 291 Their old contents have been moved to the 'backzone' file. 292 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 293 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 294 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 295 Indian/Mayotte. 296 297 Changes affecting commentary 298 299 The commentary is less enthusiastic about Shanks as a source, 300 and is more careful to distinguish UT from UTC. 301 302 303 Release 2014i - 2014-10-21 22:04:57 -0700 304 305 Changes affecting future time stamps 306 307 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 308 (Thanks to Ken Rylander for the heads-up.) Guess that future 309 years will use a similar pattern. 310 311 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 312 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 313 (Thanks to Kiley Walbom for the heads-up.) 314 315 Changes affecting time zone abbreviations 316 317 Since Belarus is not changing its clocks even though Moscow is, 318 the time zone abbreviation in Europe/Minsk is changing from FET 319 to its more-traditional value MSK on 2014-10-26 at 01:00. 320 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 321 322 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 323 Indochina, to distinguish it better from ICT (UT+7). 324 325 Changes affecting past time stamps 326 327 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 328 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 329 authoritative book). Asia/Ho_Chi_Minh has been added to 330 zone1970.tab, to give tzselect users in Vietnam two choices, 331 since north and south Vietnam disagreed after our 1970 cutoff. 332 333 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 334 they differed from existing zones only for older time stamps. As 335 usual, these changes affect pre-1970 time stamps only. Their old 336 contents have been moved to the 'backzone' file. 337 338 Changes affecting code 339 340 The time-related library functions now set errno on failure, and 341 some crashes in the new tzalloc-related library functions have 342 been fixed. (Thanks to Christos Zoulas for reporting most of 343 these problems and for suggesting fixes.) 344 345 If USG_COMPAT is defined and the requested time stamp is standard time, 346 the tz library's localtime and mktime functions now set the extern 347 variable timezone to a value appropriate for that time stamp; and 348 similarly for ALTZONE, daylight saving time, and the altzone variable. 349 This change is a companion to the tzname change in 2014h, and is 350 designed to make timezone and altzone more compatible with tzname. 351 352 The tz library's functions now set errno to EOVERFLOW if they fail 353 because the result cannot be represented. ctime and ctime_r now 354 return NULL and set errno when a time stamp is out of range, rather 355 than having undefined behavior. 356 357 Some bugs associated with the new 2014g functions have been fixed. 358 This includes a bug that largely incapacitated the new functions 359 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 360 It also includes some uses of uninitialized variables after tzalloc. 361 The new code uses the standard type 'ssize_t', which the Makefile 362 now gives porting advice about. 363 364 Changes affecting commentary 365 366 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 367 368 369 Release 2014h - 2014-09-25 18:59:03 -0700 370 371 Changes affecting past time stamps 372 373 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 374 375 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 376 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 377 378 Some more zones have been turned into links, when they differed 379 from existing zones only for older time stamps. As usual, 380 these changes affect UTC offsets in pre-1970 time stamps only. 381 Their old contents have been moved to the 'backzone' file. 382 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 383 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 384 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 385 386 Changes affecting code 387 388 zdump -V and -v now output gmtoff= values on all platforms, 389 not merely on platforms defining TM_GMTOFF. 390 391 The tz library's localtime and mktime functions now set tzname to a value 392 appropriate for the requested time stamp, and zdump now uses this 393 on platforms not defining TM_ZONE, fixing a 2014g regression. 394 (Thanks to Tim Parenti for reporting the problem.) 395 396 The tz library no longer sets tzname if localtime or mktime fails. 397 398 zdump -c no longer mishandles transitions near year boundaries. 399 (Thanks to Tim Parenti for reporting the problem.) 400 401 An access to uninitalized data has been fixed. 402 (Thanks to Jrg Richter for reporting the problem.) 403 404 When THREAD_SAFE is defined, the code ports to the C11 memory model. 405 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 406 and two threads race to initialize data used by gmtime-like functions. 407 (Thanks to Andy Heninger for reporting the problems.) 408 409 Changes affecting build procedure 410 411 'make check' now checks better for properly-sorted data. 412 413 Changes affecting documentation and commentary 414 415 zdump's gmtoff=N output is now documented, and its isdst=D output 416 is now documented to possibly output D values other than 0 or 1. 417 418 zdump -c's treatment of years is now documented to use the 419 Gregorian calendar and Universal Time without leap seconds, 420 and its behavior at cutoff boundaries is now documented better. 421 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 422 423 Programs are now documented to use the proleptic Gregorian calendar. 424 (Thanks to Alan Barrett for the suggestion.) 425 426 Fractional-second GMT offsets have been documented for civil time 427 in 19th-century Chennai, Jakarta, and New York. 428 429 430 Release 2014g - 2014-08-28 12:31:23 -0700 431 432 Changes affecting future time stamps 433 434 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 435 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 436 [As noted in 2014j, this switch was later delayed.] 437 438 Changes affecting past time stamps 439 440 Time in Russia or the USSR before 1926 or so has been corrected by 441 a few seconds in the following zones: Asia/Irkutsk, 442 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 443 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 444 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 445 Vladimir Karpinsky.) 446 447 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 448 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 449 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 450 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 451 (Thanks to Stephen Colebourne for pointing to the decree.) 452 453 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 454 455 A new file 'backzone' contains data which may appeal to 456 connoisseurs of old time stamps, although it is out of scope for 457 the tz database, is often poorly sourced, and contains some data 458 that is known to be incorrect. The new file is not recommended 459 for ordinary use and its entries are not installed by default. 460 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 461 Isle of Man entries.) 462 463 Some more zones have been turned into links, when they differed 464 from existing zones only for older time stamps. As usual, 465 these changes affect UTC offsets in pre-1970 time stamps only. 466 Their old contents have been moved to the 'backzone' file. 467 The affected zones are: Africa/Bangui, Africa/Brazzaville, 468 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 469 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 470 471 Changes affecting code 472 473 Unless NETBSD_INSPIRED is defined to 0, the tz library now 474 supplies functions for creating and using objects that represent 475 time zones. The new functions are tzalloc, tzfree, localtime_rz, 476 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 477 time2posix_z. They are intended for performance: for example, 478 localtime_rz (unlike localtime_r) is trivially thread-safe without 479 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 480 functions, and to Alan Barrett and Jonathan Lennox for helping to 481 debug the change.) 482 483 zdump now builds with the tz library unless USE_LTZ is defined to 0, 484 This lets zdump use tz features even if the system library lacks them. 485 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 486 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 487 488 zdump now uses localtime_rz if available, as it's significantly faster, 489 and it can help zdump better diagnose invalid time zone names. 490 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 491 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 492 not available, zdump now uses localtime_r and tzset if available, 493 as this is a bit cleaner and faster than plain localtime. Compile 494 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 495 lacks these two functions. 496 497 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 498 Although not needed for tz's own applications, which are single-threaded, 499 this supports POSIX better if the tz library is used in multithreaded apps. 500 501 Some crashes have been fixed when zdump or the tz library is given 502 invalid or outlandish input. 503 504 The tz library no longer mishandles leap seconds on platforms with 505 unsigned time_t in time zones that lack ordinary transitions after 1970. 506 507 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 508 already defined, to make it easier to configure on common platforms. 509 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 510 511 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 512 assumes that reading uninitialized memory yields garbage values 513 but does not cause other problems such as traps. 514 515 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 516 more likely to guess right for ambiguous time stamps near 517 transitions where tm_isdst does not change. 518 519 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 520 strftime_l for compatibility with recent versions of POSIX. 521 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 522 to 1 on recent POSIX versions, and to 0 otherwise. 523 524 tzselect -c now uses a hybrid distance measure that works better 525 in Africa. (Thanks to Alan Barrett for noting the problem.) 526 527 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 528 or when time_tz is defined. 529 530 When HAVE_UTMPX_H is set the 'date' command now builds on systems 531 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 532 the date it updates the wtmpx file if _PATH_WTMPX is defined. 533 This affects GNU/Linux and similar systems. 534 535 For easier maintenance later, some C code has been simplified, 536 some lint has been removed, and the code has been tweaked so that 537 plain 'make' is more likely to work. 538 539 The C type 'bool' is now used for boolean values, instead of 'int'. 540 541 The long-obsolete LOCALE_HOME code has been removed. 542 543 The long-obsolete 'gtime' function has been removed. 544 545 Changes affecting build procedure 546 547 'zdump' no longer links in ialloc.o, as it's not needed. 548 549 'make check_time_t_alternatives' no longer assumes GNU diff. 550 551 Changes affecting distribution tarballs 552 553 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 554 the tzdata tarball instead of the tzcode tarball, since they help 555 maintain the data. The NEWS and Theory files are now also 556 distributed in the tzdata tarball, as they're relevant for data. 557 (Thanks to Alan Barrett for pointing this out.) Also, the 558 leapseconds.awk file is no longer distributed in the tzcode 559 tarball, since it belongs in the tzdata tarball (where 2014f 560 inadvertently also distributed it). 561 562 Changes affecting documentation and commentary 563 564 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 565 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 566 for debugging it.) 567 568 The man pages have been updated to use function prototypes, 569 to document thread-safe variants like localtime_r, and to document 570 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 571 mktime_z. 572 573 The fields in Link lines have been renamed to be more descriptive 574 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 575 and LINK-TO has become LINK-NAME. 576 577 tz-link.htm mentions the IETF's tzdist working group; Windows 578 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 579 580 Some broken URLs have been fixed in the commentary. (Thanks to 581 Lester Caine.) 582 583 Commentary about Philippines DST has been updated, and commentary 584 on pre-1970 time in India has been added. 585 586 587 Release 2014f - 2014-08-05 17:42:36 -0700 588 589 Changes affecting future time stamps 590 591 Russia will subtract an hour from most of its time zones on 2014-10-26 592 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 593 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 594 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 595 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 596 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 597 (Europe/Samara) are not changing their clocks. The changed zones are 598 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 599 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 600 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 601 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 602 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 603 but not its UTC offset. Two zones are added: Asia/Chita (split 604 from Asia/Yakutsk, and also with two hours subtracted) and 605 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 606 subtracted). (Thanks to Tim Parenti for much of the above.) 607 608 Changes affecting time zone abbreviations 609 610 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 611 and similarly for the other Australian zones. That is, for eastern 612 standard and daylight saving time the abbreviations are AEST and AEDT 613 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 614 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 615 This change does not affect UTC offsets, only time zone abbreviations. 616 (Thanks to Rich Tibbett and many others.) 617 618 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 619 effective 2014-10-26 at 02:00 local time. 620 621 The time zone abbreviation for Xinjiang Time (observed in rmqi) 622 has been changed from URUT to XJT. (Thanks to Luther Ma.) 623 624 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 625 Similarly, prefer EET/EEST for eastern European time in Russia. 626 627 Change time zone abbreviations in (western) Samoa to use "ST" and 628 "DT" suffixes, as this is more likely to match common practice. 629 Prefix "W" to (western) Samoa time when its standard-time offset 630 disagrees with that of American Samoa. 631 632 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 633 634 Time zone abbreviations have been updated for Japan's two time 635 zones used 1896-1937. JWST now stands for Western Standard 636 Time, and JCST for Central Standard Time (formerly this was CJT). 637 These abbreviations are now used for time in Korea, Taiwan, 638 and Sakhalin while controlled by Japan. 639 640 Changes affecting past time stamps 641 642 China's five zones have been simplified to two, since the post-1970 643 differences in the other three seem to have been imaginary. The 644 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 645 removed; backwards-compatibility links still work, albeit with 646 different behaviors for time stamps before May 1980. Asia/Urumqi's 647 1980 transition to UTC+8 has been removed, so that it is now at 648 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 649 Treindl sent helpful translations of two papers by Guo Qingsheng.) 650 651 Some zones have been turned into links, when they differed from existing 652 zones only for older UTC offsets where data entries were likely invented. 653 These changes affect UTC offsets in pre-1970 time stamps only. This is 654 similar to the change in release 2013e, except this time for western 655 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 656 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 657 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 658 Atlantic/St_Helena. This also affects the backwards-compatibility 659 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 660 Tim Parenti, and David Patte for reporting problems in earlier 661 versions of this change.) 662 663 Asia/Shanghai's pre-standard-time UT offset has been changed from 664 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 665 transition to standard time has been changed from 1928 to 1901. 666 667 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 668 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 669 In 1946 it observed DST from 05-15 through 09-30; in 1947 670 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 671 (Thanks to Yu-Cheng Chuang.) 672 673 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 674 675 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 676 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 677 678 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 679 from 1911 to 1950. 680 681 Pacific/Chatham has been changed to New Zealand standard time plus 682 45 minutes for the period before 1957, reflecting a 1956 remark in 683 the New Zealand parliament. 684 685 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 686 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 687 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 688 not 04-06 at 02:00; and there was no DST in 1920. 689 690 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 691 692 Time in Russia before 1927 or so has been corrected by a few seconds in 693 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 694 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 695 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 696 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 697 698 Changes affecting data format 699 700 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 701 The new file's extended format allows multiple country codes per zone. 702 The older file is still installed but is deprecated; its format is 703 not changing and it will still be distributed for a while, but new 704 applications should use the new file. 705 706 The new file format simplifies maintenance of obscure locations. 707 To test this, it adds coverage for the Crozet Islands and the 708 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 709 710 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 711 It is still ASCII now, but commentary about the switch has been added. 712 The new file 'zone1970.tab' already uses UTF-8. 713 714 Changes affecting code 715 716 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 717 is defined. (Thanks to Elliott Hughes for reporting the problem.) 718 719 'zic' no longer mishandles input when ignoring case in locales that 720 are not compatible with English, e.g., unibyte Turkish locales when 721 compiled with HAVE_GETTEXT. 722 723 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 724 they no longer use ASCII '-' as if it were a dash. 725 726 'zic' now rejects output file names that contain '.' or '..' components. 727 (Thanks to Tim Parenti for reporting the problem.) 728 729 'zic -v' now warns about output file names that do not follow 730 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 731 David Olson for starting the ball rolling on this.) 732 733 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 734 735 Changes affecting build procedure 736 737 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 738 (Thanks to John Cochran.) 739 740 Changes affecting documentation and commentary 741 742 The 'Theory' file documents legacy names, the longstanding 743 exceptions to the POSIX-inspired file name rules. 744 745 The 'zic' documentation clarifies the role of time types when 746 interpreting dates. (Thanks to Arthur David Olson.) 747 748 Documentation and commentary now prefer UTF-8 to US-ASCII, 749 allowing the use of proper accents in foreign words and names. 750 Code and data have not changed because of this. (Thanks to 751 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 752 this.) 753 754 Non-HTML documentation and commentary now use plain-text URLs instead of 755 HTML insertions, and are more consistent about bracketing URLs when they 756 are not already surrounded by white space. (Thanks to suggestions by 757 Steffen Nurpmeso.) 758 759 There is new commentary about Xujiahui Observatory, the five time-zone 760 project in China from 1918 to 1949, timekeeping in Japanese-occupied 761 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 762 warlord Jin Shuren in the data. 763 764 Commentary about the coverage of each Russian zone has been standardized. 765 (Thanks to Tim Parenti). 766 767 There is new commentary about contemporary timekeeping in Ethiopia. 768 769 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 770 771 There is new commentary about time in Poland in 1919. 772 773 Proper credit has been given to DST inventor George Vernon Hudson. 774 775 Commentary about time in Metlakatla, AK and Resolute, NU has been 776 improved, with a new source for the former. 777 778 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 779 is uninhabited. 780 781 Commentary about permanent Antarctic bases has been updated. 782 783 Several typos have been corrected. (Thanks to Tim Parenti for 784 contributing some of these fixes.) 785 786 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 787 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 788 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 789 (Thanks to a heads-up from Dirkjan Ochtman.) 790 791 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 792 have been removed. These obsolescent US Naval Observatory entries were no 793 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 794 795 796 Release 2014e - 2014-06-12 21:53:52 -0700 797 798 Changes affecting near-future time stamps 799 800 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 801 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 802 switch to standard time at 24:00 the last Thursday before Ramadan, and 803 back to DST at 00:00 the first Friday after Ramadan. 804 805 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 806 to Milamber Space Network.) Guess that from 2015 on Morocco will 807 temporarily switch to standard time at 03:00 the last Saturday before 808 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 809 810 Changes affecting past time stamps 811 812 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 813 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 814 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 815 in 1991. (Thanks to Hank W. for reporting the problems.) 816 817 Changes affecting commentary 818 819 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 820 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 821 removes stale pointers to World Time Explorer and WORLDTIME. 822 823 824 Release 2014d - 2014-05-27 21:34:40 -0700 825 826 Changes affecting code 827 828 zic no longer generates files containing time stamps before the Big Bang. 829 This works around GNOME bug 730332 830 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 831 (Thanks to Leonardo Chiquitto for reporting the bug, and to 832 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 833 834 Changes affecting documentation 835 836 tz-link.htm now mentions GNOME. 837 838 839 Release 2014c - 2014-05-13 07:44:13 -0700 840 841 Changes affecting near-future time stamps 842 843 Egypt observes DST starting 2014-05-15 at 24:00. 844 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 845 Details have not been announced, except that DST will not be observed 846 during Ramadan. Guess that DST will stop during the same Ramadan dates as 847 Morocco, and that Egypt's future spring and fall transitions will be the 848 same as 2010 when it last observed DST, namely April's last Friday at 849 00:00 to September's last Thursday at 23:00 standard time. Also, guess 850 that Ramadan transitions will be at 00:00 standard time. 851 852 Changes affecting code 853 854 zic now generates transitions for minimum time values, eliminating guesswork 855 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 856 857 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 858 859 Changes affecting commentary and documentation 860 861 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 862 863 864 Release 2014b - 2014-03-24 21:28:50 -0700 865 866 Changes affecting near-future time stamps 867 868 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 869 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 870 871 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 872 Bengt-Inge Larsson.) This is currently an approximation; a better version 873 will require the zic and localtime fixes mentioned below, and the plan is 874 to wait for a while until at least the zic fixes propagate. 875 876 Changes affecting code 877 878 'zic' and 'localtime' no longer reject locations needing four transitions 879 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 880 Also, 'zic' avoids some unlikely failures due to integer overflow. 881 882 Changes affecting build procedure 883 884 'make check' now detects Rule lines defined but never used. 885 The NZAQ rules, an instance of this problem, have been removed. 886 887 Changes affecting commentary and documentation 888 889 Fix Tuesday/Thursday typo in description of time in Israel. 890 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 891 892 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 893 to Donald MacQueen.) Instead, the Microsoft Windows Store app 894 library supports them. 895 896 Add comments about Johnston Island time in the 1960s. 897 (Thanks to Lyle McElhaney.) 898 899 Morocco's 2014 DST start will be as predicted. 900 (Thanks to Sebastien Willemijns.) 901 902 903 Release 2014a - 2014-03-07 23:30:29 -0800 904 905 Changes affecting near-future time stamps 906 907 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 908 the heads-up, and to Tim Parenti for simplifying the update.) 909 910 Changes affecting past time stamps 911 912 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 913 (Thanks to Steffen Thorsen.) 914 915 Ukraine switched from Moscow to Eastern European time on 1990-07-01 916 (not 1992-01-01), and observed DST during the entire next winter. 917 (Thanks to Vladimir in Moscow via Alois Treindl.) 918 919 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 920 (Thanks to Avigdor Finkelstein.) 921 922 Changes affecting code 923 924 A uninitialized-storage bug in 'localtime' has been fixed. 925 (Thanks to Logan Chien.) 926 927 Changes affecting the build procedure 928 929 The settings for 'make check_web' now default to Ubuntu 13.10. 930 931 Changes affecting commentary and documentation 932 933 The boundary of the US Pacific time zone is given more accurately. 934 (Thanks to Alan Mintz.) 935 936 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 937 938 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 939 940 Better descriptions of countries with same time zone history as 941 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 942 943 Several changes affect tz-link.htm, the main web page. 944 945 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 946 David Braverman). 947 948 Mention xCal (Internet RFC 6321) and jCal. 949 950 Microsoft has some support for tz database names. 951 952 CLDR data formats include both XML and JSON. 953 954 Mention Maggiolo's map of solar vs standard time. 955 (Thanks to Arthur David Olson.) 956 957 Mention TZ4Net. (Thanks to Matt Johnson.) 958 959 Mention the timezone-olson Haskell package. 960 961 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 962 963 Remove moribund links to daylight-savings-time.info and to 964 Simple Timer + Clocks. 965 966 Update two links. (Thanks to Oscar van Vlijmen.) 967 968 Fix some formatting glitches, e.g., remove random newlines from 969 abbr elements' title attributes. 970 971 972 Release 2013i - 2013-12-17 07:25:23 -0800 973 974 Changes affecting near-future time stamps: 975 976 Jordan switches back to standard time at 00:00 on December 20, 2013. 977 The 2006-2011 transition schedule is planned to resume in 2014. 978 (Thanks to Steffen Thorsen.) 979 980 Changes affecting past time stamps: 981 982 In 2004, Cuba began DST on March 28, not April 4. 983 (Thanks to Steffen Thorsen.) 984 985 Changes affecting code 986 987 The compile-time flag NOSOLAR has been removed, as nowadays the 988 benefit of slightly shrinking runtime table size is outweighed by the 989 cost of disallowing potential future updates that exceed old limits. 990 991 Changes affecting documentation and commentary 992 993 The files solar87, solar88, and solar89 are no longer distributed. 994 They were a negative experiment - that is, a demonstration that 995 tz data can represent solar time only with some difficulty and error. 996 Their presence in the distribution caused confusion, as Riyadh 997 civil time was generally not solar time in those years. 998 999 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 1000 1001 1002 Release 2013h - 2013-10-25 15:32:32 -0700 1003 1004 Changes affecting current and future time stamps: 1005 1006 Libya has switched its time zone back to UTC+2 without DST, 1007 instead of UTC+1 with DST. (Thanks to Even Scharning.) 1008 1009 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 1010 (Thanks to Gwillim Law.) 1011 1012 Changes affecting future time stamps: 1013 1014 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 1015 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 1016 (Thanks to Steffen Thorsen.) 1017 1018 Add entries for DST transitions in Morocco in the year 2038. 1019 This avoids some year-2038 glitches introduced in 2013g. 1020 (Thanks to Yoshito Umaoka for reporting the problem.) 1021 1022 Changes affecting API 1023 1024 The 'tzselect' command no longer requires the 'select' command, 1025 and should now work with /bin/sh on more platforms. It also works 1026 around a bug in BusyBox awk before version 1.21.0. (Thanks to 1027 Patrick 'P. J.' McDermott and Alan Barrett.) 1028 1029 Changes affecting code 1030 1031 Fix localtime overflow bugs with 32-bit unsigned time_t. 1032 1033 zdump no longer assumes sscanf returns maximal values on overflow. 1034 1035 Changes affecting the build procedure 1036 1037 The builder can specify which programs to use, if any, instead of 1038 'ar' and 'ranlib', and libtz.a is now built locally before being 1039 installed. (Thanks to Michael Forney.) 1040 1041 A dependency typo in the 'zdump' rule has been fixed. 1042 (Thanks to Andrew Paprocki.) 1043 1044 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 1045 work as specified by POSIX.2-1992 or later; this is portable nowadays. 1046 1047 'make clean' no longer removes 'leapseconds', since it's 1048 host-independent and is part of the distribution. 1049 1050 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 1051 1052 Changes affecting documentation and commentary 1053 1054 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 1055 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 1056 1057 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 1058 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 1059 longer maintained) and for old advisories. SOFA now does C. 1060 1061 Release 2013g - 2013-09-30 21:08:26 -0700 1062 1063 Changes affecting current and near-future time stamps 1064 1065 Morocco now observes DST from the last Sunday in March to the last 1066 Sunday in October, not April to September respectively. (Thanks 1067 to Steffen Thorsen.) 1068 1069 Changes affecting 'zic' 1070 1071 'zic' now runs on platforms that lack both hard links and symlinks. 1072 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 1073 Also, fix some bugs on platforms that lack hard links but have symlinks. 1074 1075 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 1076 to predict the far future, fixing a bug introduced in 2013e. 1077 1078 Changes affecting the build procedure 1079 1080 The 'leapseconds' file is again put into the tzdata tarball. 1081 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 1082 Matt Burgess and Ian Abbott.) The timestamps of these and other 1083 dependent files in tarballs are adjusted more consistently. 1084 1085 Changes affecting documentation and commentary 1086 1087 The README file is now part of the data tarball as well as the code. 1088 It now states that files are public domain unless otherwise specified. 1089 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 1090 Its details about the 1989 release moved to a place of honor near 1091 the end of NEWS. 1092 1093 1094 Release 2013f - 2013-09-24 23:37:36 -0700 1095 1096 Changes affecting near-future time stamps 1097 1098 Tocantins will very likely not observe DST starting this spring. 1099 (Thanks to Steffen Thorsen.) 1100 1101 Jordan will likely stay at UTC+3 indefinitely, and will not fall 1102 back this fall. 1103 1104 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 1105 1106 Changes affecting API 1107 1108 The types of the global variables 'timezone' and 'altzone' (if present) 1109 have been changed back to 'long'. This is required for 'timezone' 1110 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 1111 These variables were originally 'long' in the tz code, but were 1112 mistakenly changed to 'time_t' in 1987; nobody reported the 1113 incompatibility until now. The difference matters on x32, where 1114 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 1115 1116 Changes affecting the build procedure 1117 1118 Avoid long strings in leapseconds.awk to work around a mawk bug. 1119 (Thanks to Cyril Baurand.) 1120 1121 Changes affecting documentation and commentary 1122 1123 New file 'NEWS' that contains release notes like this one. 1124 1125 Paraguay's law does not specify DST transition time; 00:00 is customary. 1126 (Thanks to Waldemar Villamayor-Venialbo.) 1127 1128 Minor capitalization fixes. 1129 1130 Changes affecting version-control only 1131 1132 The experimental GitHub repository now contains annotated and 1133 signed tags for recent releases, e.g., '2013e' for Release 2013e. 1134 Releases are tagged starting with 2012e; earlier releases were 1135 done differently, and tags would either not have a simple name or 1136 not exactly match what was released. 1137 1138 'make set-timestamps' is now simpler and a bit more portable. 1139 1140 1141 Release 2013e - 2013-09-19 23:50:04 -0700 1142 1143 Changes affecting near-future time stamps 1144 1145 This year Fiji will start DST on October 27, not October 20. 1146 (Thanks to David Wheeler for the heads-up.) For now, guess that 1147 Fiji will continue to spring forward the Sunday before the fourth 1148 Monday in October. 1149 1150 Changes affecting current and future time zone abbreviations 1151 1152 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 1153 time zone abbreviations since 1932. (Thanks to George Ziegler, 1154 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 1155 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 1156 Asia/Makassar, and Asia/Pontianak. 1157 1158 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 1159 daylight saving time) for San Luis, Argentina since 2009. 1160 1161 Changes affecting Godthb time stamps after 2037 if version mismatch 1162 1163 Allow POSIX-like TZ strings where the transition time's hour can 1164 range from -167 through 167, instead of the POSIX-required 0 1165 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 1166 new Fiji rules. This is a more-compact way to represent 1167 far-future time stamps for America/Godthab, America/Santiago, 1168 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1169 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1170 this change. (Derived from a suggestion by Arthur David Olson.) 1171 1172 Allow POSIX-like TZ strings where daylight saving time is in 1173 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1174 Argentina Summer Time all year. This supports a more-compact way 1175 to represent the 2013d data for America/Argentina/San_Luis. 1176 Because of the change for San Luis noted above this change does not 1177 affect the current data. (Thanks to Andrew Main (Zefram) for 1178 suggestions that improved this change.) 1179 1180 Where these two TZ changes take effect, there is a minor extension 1181 to the tz file format in that it allows new values for the 1182 embedded TZ-format string, and the tz file format version number 1183 has therefore been increased from 2 to 3 as a precaution. 1184 Version-2-based client code should continue to work as before for 1185 all time stamps before 2038. Existing version-2-based client code 1186 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1187 files, and typically works in practice even for time stamps after 1188 2037; the only known exception is America/Godthab. 1189 1190 Changes affecting time stamps before 1970 1191 1192 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1193 some errors before 1947. 1194 1195 Some zones have been turned into links, when they differ from existing 1196 zones only in older data entries that were likely invented or that 1197 differ only in LMT or transitions from LMT. These changes affect 1198 only time stamps before 1943. The affected zones are: 1199 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1200 America/Grenada, America/Guadeloupe, America/Marigot, 1201 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1202 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1203 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1204 confirming that the old Europe/Vaduz zone was wrong and the new 1205 link is better for WWII-era times.) 1206 1207 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1208 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 1209 from 1890 to 1912. 1210 1211 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1212 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 1213 to Alois Treindl). 1214 1215 Change the date of the circa-1850 Zurich transition from 1849-09-12 1216 to 1853-07-16, overriding Shanks with data from Messerli about 1217 postal and telegraph time in Switzerland. 1218 1219 Changes affecting time zone abbreviations before 1970 1220 1221 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1222 as Jakarta was called Batavia back then. 1223 1224 Changes affecting API 1225 1226 The 'zic' command now outputs a dummy transition when far-future 1227 data can't be summarized using a TZ string, and uses a 402-year 1228 window rather than a 400-year window. For the current data, this 1229 affects only the Asia/Tehran file. It does not affect any of the 1230 time stamps that this file represents, so zdump outputs the same 1231 information as before. (Thanks to Andrew Main (Zefram).) 1232 1233 The 'date' command has a new '-r' option, which lets you specify 1234 the integer time to display, a la FreeBSD. 1235 1236 The 'tzselect' command has two new options '-c' and '-n', which lets you 1237 select a zone based on latitude and longitude. 1238 1239 The 'zic' command's '-v' option now warns about constructs that 1240 require the new version-3 binary file format. (Thanks to Arthur 1241 David Olson for the suggestion.) 1242 1243 Support for floating-point time_t has been removed. 1244 It was always dicey, and POSIX no longer requires it. 1245 (Thanks to Eric Blake for suggesting to the POSIX committee to 1246 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1247 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1248 bugs and elucidating some of the corners of the old floating-point 1249 implementation.) 1250 1251 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1252 changed back to the old practice of using 'long' to represent UT 1253 offsets. This had been inadvertently and mistakenly changed to 1254 'int_fast32_t'. (Thanks to Christos Zoulas.) 1255 1256 The code avoids undefined behavior on integer overflow in some 1257 more places, including gmtime, localtime, mktime and zdump. 1258 1259 Changes affecting the zdump utility 1260 1261 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1262 "UTC" does not make sense for time stamps that predate the introduction 1263 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1264 for clarifying UT vs UTC.) 1265 1266 Data changes affecting behavior of tzselect and similar programs 1267 1268 Country code BQ is now called the more-common name "Caribbean Netherlands" 1269 rather than the more-official "Bonaire, St Eustatius & Saba". 1270 1271 Remove from zone.tab the names America/Montreal, America/Shiprock, 1272 and Antarctica/South_Pole, as they are equivalent to existing 1273 same-country-code zones for post-1970 time stamps. The data entries for 1274 these names are unchanged, so the names continue to work as before. 1275 1276 Changes affecting code internals 1277 1278 zic -c now runs way faster on 64-bit hosts when given large numbers. 1279 1280 zic now uses vfprintf to avoid allocating and freeing some memory. 1281 1282 tzselect now computes the list of continents from the data, 1283 rather than have it hard-coded. 1284 1285 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1286 1287 Changes affecting the build procedure 1288 1289 The 'leapseconds' file is now generated automatically from a 1290 new file 'leap-seconds.list', which is a copy of 1291 <ftp://time.nist.gov/pub/leap-seconds.list>. 1292 A new source file 'leapseconds.awk' implements this. 1293 The goal is simplification of the future maintenance of 'leapseconds'. 1294 1295 When building the 'posix' or 'right' subdirectories, if the 1296 subdirectory would be a copy of the default subdirectory, it is 1297 now made a symbolic link if that is supported. This saves about 1298 2 MB of file system space. 1299 1300 The links America/Shiprock and Antarctica/South_Pole have been 1301 moved to the 'backward' file. This affects only nondefault builds 1302 that omit 'backward'. 1303 1304 Changes affecting version-control only 1305 1306 .gitignore now ignores 'date'. 1307 1308 Changes affecting documentation and commentary 1309 1310 Changes to the 'tzfile' man page 1311 1312 It now mentions that the binary file format may be extended in 1313 future versions by appending data. 1314 1315 It now refers to the 'zdump' and 'zic' man pages. 1316 1317 Changes to the 'zic' man page 1318 1319 It lists conditions that elicit a warning with '-v'. 1320 1321 It says that the behavior is unspecified when duplicate names 1322 are given, or if the source of one link is the target of another. 1323 1324 Its examples are updated to match the latest data. 1325 1326 The definition of white space has been clarified slightly. 1327 (Thanks to Michael Deckers.) 1328 1329 Changes to the 'Theory' file 1330 1331 There is a new section about the accuracy of the tz database, 1332 describing the many ways that errors can creep in, and 1333 explaining why so many of the pre-1970 time stamps are wrong or 1334 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1335 Wollman for discussions that contributed to this). 1336 1337 The 'Theory' file describes LMT better (this follows a 1338 suggestion by Guy Harris). 1339 1340 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1341 1342 It's mentioned that excluding 'backward' should not affect the 1343 other data, and it suggests at least one zone.tab name per 1344 inhabited country (thanks to Stephen Colebourne). 1345 1346 Some longstanding restrictions on names are documented, e.g., 1347 'America/New_York' precludes 'America/New_York/Bronx'. 1348 1349 It gives more reasons for the 1970 cutoff. 1350 1351 It now mentions which time_t variants are supported, such as 1352 signed integer time_t. (Thanks to Paul Goyette for reporting 1353 typos in an experimental version of this change.) 1354 1355 (Thanks to Philip Newton for correcting typos in these changes.) 1356 1357 Documentation and commentary is more careful to distinguish UT in 1358 general from UTC in particular. (Thanks to Steve Allen.) 1359 1360 Add a better source for the Zurich 1894 transition. 1361 (Thanks to Pierre-Yves Berger.) 1362 1363 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1364 1365 1366 Release 2013d - 2013-07-05 07:38:01 -0700 1367 1368 Changes affecting future time stamps: 1369 1370 Morocco's midsummer transitions this year are July 7 and August 10, 1371 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1372 1373 Israel now falls back on the last Sunday of October. 1374 (Thanks to Ephraim Silverberg.) 1375 1376 Changes affecting past time stamps: 1377 1378 Specify Jerusalem's location more precisely; this changes the pre-1880 1379 times by 2 s. 1380 1381 Changing affecting metadata only: 1382 1383 Fix typos in the entries for country codes BQ and SX. 1384 1385 Changes affecting code: 1386 1387 Rework the code to fix a bug with handling Australia/Macquarie on 1388 32-bit hosts (thanks to Arthur David Olson). 1389 1390 Port to platforms like NetBSD, where time_t can be wider than long. 1391 1392 Add support for testing time_t types other than the system's. 1393 Run 'make check_time_t_alternatives' to try this out. 1394 Currently, the tests fail for unsigned time_t; 1395 this should get fixed at some point. 1396 1397 Changes affecting documentation and commentary: 1398 1399 Deemphasize the significance of national borders. 1400 1401 Update the zdump man page. 1402 1403 Remove obsolete NOID comment (thanks to Denis Excoffier). 1404 1405 Update several URLs and comments in the web pages. 1406 1407 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1408 1409 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1410 1411 1412 Release 2013c - 2013-04-19 16:17:40 -0700 1413 1414 Changes affecting current and future time stamps: 1415 1416 Palestine observed DST starting March 29, 2013. (Thanks to 1417 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1418 with the predicted rules being the last Thursday in March at 24:00 1419 to the first Friday on or after September 21 at 01:00. 1420 1421 Assume that the recent change to Paraguay's DST rules is permanent, 1422 by moving the end of DST to the 4th Sunday in March every year. 1423 (Thanks to Carlos Ral Perasso.) 1424 1425 Changes affecting past time stamps: 1426 1427 Fix some historical data for Palestine to agree with that of 1428 timeanddate.com, as follows: 1429 1430 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1431 00:00 Apr 1. 1432 1433 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1434 02:00. 1435 1436 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1437 1438 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1439 1440 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1441 1442 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1443 1444 Fix times of habitation for Macquarie to agree with the Tasmania 1445 Parks & Wildlife Service history, which indicates that permanent 1446 habitation was 1899-1919 and 1948 on. 1447 1448 Changing affecting metadata only: 1449 1450 Macquarie Island is politically part of Australia, not Antarctica. 1451 (Thanks to Tobias Conradi.) 1452 1453 Sort Macquarie more-consistently with other parts of Australia. 1454 (Thanks to Tim Parenti.) 1455 1456 1457 Release 2013b - 2013-03-10 22:33:40 -0700 1458 1459 Changes affecting current and future time stamps: 1460 1461 Haiti uses US daylight-saving rules this year, and presumably future years. 1462 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1463 1464 Paraguay will end DST on March 24 this year. 1465 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1466 1467 Morocco does not observe DST during Ramadan; 1468 try to predict Ramadan in Morocco as best we can. 1469 (Thanks to Erik Homoet for the heads-up.) 1470 1471 Changes affecting commentary: 1472 1473 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1474 Update URL for Solaris. Mention Internet RFC 6557. 1475 Update Internet RFCs 2445->5545, 2822->5322. 1476 Switch from FTP to HTTP for Internet RFCs. 1477 1478 1479 Release 2013a - 2013-02-27 09:20:35 -0800 1480 1481 Change affecting binary data format: 1482 1483 The zone offset at the end of version-2-format zone files is now 1484 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1485 1486 Changes affecting current and future time stamps: 1487 1488 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1489 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1490 (Thanks to Steffen Thorsen and Robert Elz.) 1491 1492 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1493 (Thanks to Tobias Conradi and Arthur David Olson.) 1494 1495 Many changes affect historical time stamps before 1940. 1496 These were deduced from: Milne J. Civil time. Geogr J. 1899 1497 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1498 1499 Changes affecting the code: 1500 1501 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1502 the data). (Thanks to Arthur David Olson.) 1503 1504 Fix localtime bug when time_t is unsigned and data files were generated 1505 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1506 to Arthur David Olson for fixing.) 1507 1508 Allow the email address for bug reports to be set by the packager. 1509 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 1510 1511 Update HTML checking to be compatible with Ubuntu 12.10. 1512 1513 Check that files are a safe subset of ASCII. At some point we may 1514 relax this requirement to a safe subset of UTF-8. Without the 1515 check, some non-UTF-8 encodings were leaking into the distribution. 1516 1517 Commentary changes: 1518 1519 Restore a comment about copyright notices that was inadvertently deleted. 1520 (Thanks to Arthur David Olson.) 1521 1522 Improve the commentary about which districts observe what times 1523 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1524 1525 Add web page links to tz.js. 1526 1527 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1528 1529 1530 Release 2012j - 2012-11-12 18:34:49 -0800 1531 1532 Libya moved to CET this weekend, but with DST planned next year. 1533 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1534 1535 Signatures now have the extension .asc, not .sign, as that's more 1536 standard. (Thanks to Phil Pennock.) 1537 1538 The output of 'zdump --version', and of 'zic --version', now 1539 uses a format that is more typical for --version. 1540 (Thanks to Joseph S. Myers.) 1541 1542 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1543 now uses tz (a] iana.org rather than the old elsie address. 1544 1545 zic -v now complains about abbreviations that are less than 3 1546 or more than 6 characters, as per Posix. Formerly, it checked 1547 for abbreviations that were more than 3. 1548 1549 'make public' no longer puts its temporary directory under /tmp, 1550 and uses the just-built zic rather than the system zic. 1551 1552 Various fixes to documentation and commentary. 1553 1554 1555 Release 2012i - 2012-11-03 12:57:09 -0700 1556 1557 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1558 1559 Linker flags can now be specified via LDFLAGS. 1560 AWK now defaults to 'awk', not 'nawk'. 1561 The shell in tzselect now defaults to /bin/bash, but this can 1562 be overridden by specifying KSHELL. 1563 The main web page now mentions the unofficial GitHub repository. 1564 (Thanks to Mike Frysinger.) 1565 1566 Tarball signatures can now be built by running 'make signatures'. 1567 There are also new makefile rules 'tarballs', 'check_public', and 1568 separate makefile rules for each tarball and signature file. 1569 A few makefile rules are now more portable to strict POSIX. 1570 1571 The main web page now lists the canonical IANA URL. 1572 1573 1574 Release 2012h - 2012-10-26 22:49:10 -0700 1575 1576 Bahia no longer has DST. (Thanks to Kelley Cook.) 1577 1578 Tocantins has DST. (Thanks to Rodrigo Severo.) 1579 1580 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1581 1582 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1583 1584 Web page updates. 1585 1586 More C modernization, except that at Arthur David Olson's suggestion 1587 the instances of 'register' were kept. 1588 1589 1590 Release 2012g - 2012-10-17 20:59:45 -0700 1591 1592 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1593 1594 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1595 1596 Assume C89. 1597 1598 To attack the version-number problem, this release ships the file 1599 'Makefile' (which contains the release number) in both the tzcode and 1600 the tzdata tarballs. The two Makefiles are identical, and should be 1601 identical in any matching pair of tarballs, so it shouldn't matter 1602 which order you extract the tarballs. Perhaps we can come up with a 1603 better version-number scheme at some point; this scheme does have the 1604 virtue of not adding more files. 1605 1606 1607 Release 2012f - 2012-09-12 23:17:03 -0700 1608 1609 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1610 20 this year. (Thanks to Steffen Thorsen.) 1611 1612 1613 Release 2012e - 2012-08-02 20:44:55 -0700 1614 1615 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1616 (Thanks to Steffen Thorsen.) 1617 1618 * Use a single version number for both code and data. 1619 1620 * .gitignore: New file. 1621 1622 * Remove trailing white space. 1623 1624 1625 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1626 1627 Changes for Morocco's time stamps, which take effect in a couple of 1628 hours, along with infrastructure changes to accommodate how the tz 1629 code and data are released on IANA. 1630 1631 1632 Release data2012c - 2012-03-27 12:17:25 -0400 1633 1634 africa 1635 Summer time changes for Morocco (to start late April 2012) 1636 1637 asia 1638 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1639 1640 northamerica 1641 Haiti following US/Canada rules for 2012 (and we're assuming, 1642 for now anyway, for the future). 1643 1644 1645 Release 2012b - 2012-03-02 12:29:15 +0700 1646 1647 There is just one change to tzcode2012b (compared with 2012a): 1648 the Makefile that was accidentally included with 2012a has been 1649 replaced with the version that should have been there, which is 1650 identical with the previous version (from tzcode2011i). 1651 1652 There are just two changes in tzdata2012b compared with 2012a. 1653 1654 Most significantly, summer time in Cuba has been delayed 3 weeks 1655 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1656 date, as listed in 2012a) is just a little over a week away, this 1657 change is urgent. 1658 1659 Less importantly, an excess tab in one of the changes in zone.tab 1660 in 2012a has been removed. 1661 1662 1663 Release 2012a - 2012-03-01 18:28:10 +0700 1664 1665 The changes in tzcode2012a (compared to the previous version, 2011i) 1666 are entirely to the README and tz-art.htm and tz-link.htm files, if 1667 none of those concern you, you can ignore the code update. The changes 1668 reflect the changed addresses for the mailing list and the code and 1669 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1670 has been added to tz-link.htm). 1671 1672 In tzdata2012a (compared to the previous release, which was 2011n) 1673 the major changes are: 1674 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1675 Falkland Islands onto permanent summer time (we're assuming for the 1676 foreseeable future, though 2012 is all we're fairly certain of.) 1677 Armenia has abolished Summer Time. 1678 Tokelau jumped the International Date Line back last December 1679 (just the same as their near neighbour, Samoa). 1680 America/Creston is a new zone for a small area of British Columbia 1681 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1682 1683 Other minor changes are: 1684 Corrections to 1918 Canadian summer time end dates. 1685 Updated URL for UK time zone history (in comments) 1686 A few typos in Le Corre's list of free French place names (comments) 1687 1688 1689 Release data2011n - 2011-10-30 14:57:54 +0700 1690 1691 There are three changes of note - most urgently, Cuba (America/Havana) 1692 has extended summer time by two weeks, now to end on Nov 13, rather than 1693 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1694 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1695 all, and consequently that zone has been removed (again) and reinstated 1696 in the "backward" file as a link to Europe/Chisinau. And third, the 1697 end date for Fiji's summer time this summer was moved forward from the 1698 earlier planned Feb 26, to Jan 22. 1699 1700 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1701 (and the incorrect syntax that was in the 2011m version of that file 1702 is so fixed - it would have been fixed in a different way had this 1703 change not happened - that's the "missing" sccs version id). 1704 1705 1706 Release data2011m - 2011-10-24 21:42:16 +0700 1707 1708 In particular, the typos in comments in the data (2011-11-17 should have 1709 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1710 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1711 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 1712 Tim Parenti, and also Denys Gavrysh) 1713 1714 In addition, I added Europe/Tiraspol to zone.tab. 1715 1716 This time, all the files have new version numbers... (including the files 1717 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 1718 version numbers there...) 1719 1720 1721 Release data2011l - 2011-10-10 11:15:43 +0700 1722 1723 There are just 2 changes that cause different generated tzdata files from 1724 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 1725 is included, but commented out. Compared with the diff I sent out last week, 1726 this version also includes attributions for the sources for the changes 1727 (in much the same format as ado used, but the html tags have not been 1728 checked, verified, or used in any way at all, so if there are errors there, 1729 please let me know.) 1730 1731 1732 Release data2011k - 2011-09-20 17:54:03 -0400 1733 1734 [not summarized] 1735 1736 1737 Release data2011j - 2011-09-12 09:22:49 -0400 1738 1739 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 1740 Tanzania); there are also two spelling corrections to comments in 1741 the australasia file (with thanks to Christos Zoulas). 1742 1743 1744 Release 2011i - 2011-08-29 05:56:32 -0400 1745 1746 [not summarized] 1747 1748 1749 Release data2011h - 2011-06-15 18:41:48 -0400 1750 1751 Russia and Curaao changes 1752 1753 1754 Release 2011g - 2011-04-25 09:07:22 -0400 1755 1756 update the rules for Egypt to reflect its abandonment of DST this year 1757 1758 1759 Release 2011f - 2011-04-06 17:14:53 -0400 1760 1761 [not summarized] 1762 1763 1764 Release 2011e - 2011-03-31 16:04:38 -0400 1765 1766 Morocco, Chile, and tz-link changes 1767 1768 1769 Release 2011d - 2011-03-14 09:18:01 -0400 1770 1771 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 1772 1773 1774 Release 2011c - 2011-03-07 09:30:09 -0500 1775 1776 These do affect current time stamps in Chile and Annette Island, Canada. 1777 1778 1779 Release 2011b - 2011-02-07 08:44:50 -0500 1780 1781 [not summarized] 1782 1783 1784 Release 2011a - 2011-01-24 10:30:16 -0500 1785 1786 [not summarized] 1787 1788 1789 Release data2010o - 2010-11-01 09:18:23 -0400 1790 1791 change to the end of DST in Fiji in 2011 1792 1793 1794 Release 2010n - 2010-10-25 08:19:17 -0400 1795 1796 [not summarized] 1797 1798 1799 Release 2010m - 2010-09-27 09:24:48 -0400 1800 1801 Hong Kong, Vostok, and zic.c changes 1802 1803 1804 Release 2010l - 2010-08-16 06:57:25 -0400 1805 1806 [not summarized] 1807 1808 1809 Release 2010k - 2010-07-26 10:42:27 -0400 1810 1811 [not summarized] 1812 1813 1814 Release 2010j - 2010-05-10 09:07:48 -0400 1815 1816 changes for Baha de Banderas and for version naming 1817 1818 1819 Release data2010i - 2010-04-16 18:50:45 -0400 1820 1821 the end of DST in Morocco on 2010-08-08 1822 1823 1824 Release data2010h - 2010-04-05 09:58:56 -0400 1825 1826 [not summarized] 1827 1828 1829 Release data2010g - 2010-03-24 11:14:53 -0400 1830 1831 [not summarized] 1832 1833 1834 Release 2010f - 2010-03-22 09:45:46 -0400 1835 1836 [not summarized] 1837 1838 1839 Release data2010e - 2010-03-08 14:24:27 -0500 1840 1841 corrects the Dhaka bug found by Danvin Ruangchan 1842 1843 1844 Release data2010d - 2010-03-06 07:26:01 -0500 1845 1846 [not summarized] 1847 1848 1849 Release 2010c - 2010-03-01 09:20:58 -0500 1850 1851 changes including KRE's suggestion for earlier initialization of 1852 "goahead" and "goback" structure elements 1853 1854 1855 Release code2010a - 2010-02-16 10:40:04 -0500 1856 1857 [not summarized] 1858 1859 1860 Release data2010b - 2010-01-20 12:37:01 -0500 1861 1862 Mexico changes 1863 1864 1865 Release data2010a - 2010-01-18 08:30:04 -0500 1866 1867 changes to Dhaka 1868 1869 1870 Release data2009u - 2009-12-26 08:32:28 -0500 1871 1872 changes to DST in Bangladesh 1873 1874 1875 Release 2009t - 2009-12-21 13:24:27 -0500 1876 1877 [not summarized] 1878 1879 1880 Release data2009s - 2009-11-14 10:26:32 -0500 1881 1882 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 1883 1884 1885 Release 2009r - 2009-11-09 10:10:31 -0500 1886 1887 "antarctica" and "tz-link.htm" changes 1888 1889 1890 Release 2009q - 2009-11-02 09:12:40 -0500 1891 1892 with two corrections as reported by Eric Muller and Philip Newton 1893 1894 1895 Release data2009p - 2009-10-23 15:05:27 -0400 1896 1897 Argentina (including San Luis) changes (with the correction from 1898 Mariano Absatz) 1899 1900 1901 Release data2009o - 2009-10-14 16:49:38 -0400 1902 1903 Samoa (commentary only), Pakistan, and Bangladesh changes 1904 1905 1906 Release data2009n - 2009-09-22 15:13:38 -0400 1907 1908 added commentary for Argentina and a change to the end of DST in 1909 2009 in Pakistan 1910 1911 1912 Release data2009m - 2009-09-03 10:23:43 -0400 1913 1914 Samoa and Palestine changes 1915 1916 1917 Release data2009l - 2009-08-14 09:13:07 -0400 1918 1919 Samoa (comments only) and Egypt 1920 1921 1922 Release 2009k - 2009-07-20 09:46:08 -0400 1923 1924 [not summarized] 1925 1926 1927 Release data2009j - 2009-06-15 06:43:59 -0400 1928 1929 Bangladesh change (with a short turnaround since the DST change is 1930 impending) 1931 1932 1933 Release 2009i - 2009-06-08 09:21:22 -0400 1934 1935 updating for DST in Bangladesh this year 1936 1937 1938 Release 2009h - 2009-05-26 09:19:14 -0400 1939 1940 [not summarized] 1941 1942 1943 Release data2009g - 2009-04-20 16:34:07 -0400 1944 1945 Cairo 1946 1947 1948 Release data2009f - 2009-04-10 11:00:52 -0400 1949 1950 correct DST in Pakistan 1951 1952 1953 Release 2009e - 2009-04-06 09:08:11 -0400 1954 1955 [not summarized] 1956 1957 1958 Release 2009d - 2009-03-23 09:38:12 -0400 1959 1960 Morocco, Tunisia, Argentina, and American Astronomical Society changes 1961 1962 1963 Release data2009c - 2009-03-16 09:47:51 -0400 1964 1965 change to the start of Cuban DST 1966 1967 1968 Release 2009b - 2009-02-09 11:15:22 -0500 1969 1970 [not summarized] 1971 1972 1973 Release 2009a - 2009-01-21 10:09:39 -0500 1974 1975 [not summarized] 1976 1977 1978 Release data2008i - 2008-10-21 12:10:25 -0400 1979 1980 southamerica and zone.tab files, with Argentina DST rule changes and 1981 United States zone reordering and recommenting 1982 1983 1984 Release 2008h - 2008-10-13 07:33:56 -0400 1985 1986 [not summarized] 1987 1988 1989 Release 2008g - 2008-10-06 09:03:18 -0400 1990 1991 Fix a broken HTML anchor and update Brazil's DST transitions; 1992 there's also a slight reordering of information in tz-art.htm. 1993 1994 1995 Release data2008f - 2008-09-09 22:33:26 -0400 1996 1997 [not summarized] 1998 1999 2000 Release 2008e - 2008-07-28 14:11:17 -0400 2001 2002 changes by Arthur David Olson and Jesper Nrgaard Welen 2003 2004 2005 Release data2008d - 2008-07-07 09:51:38 -0400 2006 2007 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 2008 2009 2010 Release data2008c - 2008-05-19 17:48:03 -0400 2011 2012 Pakistan, Morocco, and Mongolia 2013 2014 2015 Release data2008b - 2008-03-24 08:30:59 -0400 2016 2017 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 2018 link provided 2019 2020 2021 Release 2008a - 2008-03-08 05:42:16 -0500 2022 2023 [not summarized] 2024 2025 2026 Release 2007k - 2007-12-31 10:25:22 -0500 2027 2028 most importantly, changes to the "southamerica" file based on 2029 Argentina's readoption of daylight saving time 2030 2031 2032 Release 2007j - 2007-12-03 09:51:01 -0500 2033 2034 1. eliminate the "P" (parameter) macro; 2035 2036 2. the "noncontroversial" changes circulated on the time zone 2037 mailing list (less the changes to "logwtmp.c"); 2038 2039 3. eliminate "too many transition" errors when "min" is used in time 2040 zone rules; 2041 2042 4. changes by Paul Eggert (including updated information for Venezuela). 2043 2044 2045 Release data2007i - 2007-10-30 10:28:11 -0400 2046 2047 changes for Cuba and Syria 2048 2049 2050 Release 2007h - 2007-10-01 10:05:51 -0400 2051 2052 changes by Paul Eggert, as well as an updated link to the ICU 2053 project in tz-link.htm 2054 2055 2056 Release 2007g - 2007-08-20 10:47:59 -0400 2057 2058 changes by Paul Eggert 2059 2060 The "leapseconds" file has been updated to incorporate the most 2061 recent International Earth Rotation and Reference Systems Service 2062 (IERS) bulletin. 2063 2064 There's an addition to tz-art.htm regarding the television show "Medium". 2065 2066 2067 Release 2007f - 2007-05-07 10:46:46 -0400 2068 2069 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 2070 Zealand) 2071 2072 changes to zic.c to allow hour values greater than 24 (along with 2073 Paul's improved time value overflow checking) 2074 2075 2076 Release 2007e - 2007-04-02 10:11:52 -0400 2077 2078 Syria and Honduras changes by Paul Eggert 2079 2080 zic.c variable renaming changes by Arthur David Olson 2081 2082 2083 Release 2007d - 2007-03-20 08:48:30 -0400 2084 2085 changes by Paul Eggert 2086 2087 the elimination of white space at the ends of lines 2088 2089 2090 Release 2007c - 2007-02-26 09:09:37 -0500 2091 2092 changes by Paul Eggert 2093 2094 2095 Release 2007b - 2007-02-12 09:34:20 -0500 2096 2097 Paul Eggert's proposed change to the quotation handling logic in zic.c. 2098 2099 changes to the commentary in "leapseconds" reflecting the IERS 2100 announcement that there is to be no positive leap second at the end 2101 of June 2007. 2102 2103 2104 Release 2007a - 2007-01-08 12:28:29 -0500 2105 2106 changes by Paul Eggert 2107 2108 Derick Rethan's Asmara change 2109 2110 Oscar van Vlijmen's Easter Island local mean time change 2111 2112 symbolic link changes 2113 2114 2115 Release 2006p - 2006-11-27 08:54:27 -0500 2116 2117 changes by Paul Eggert 2118 2119 2120 Release 2006o - 2006-11-06 09:18:07 -0500 2121 2122 changes by Paul Eggert 2123 2124 2125 Release 2006n - 2006-10-10 11:32:06 -0400 2126 2127 changes by Paul Eggert 2128 2129 2130 Release 2006m - 2006-10-02 15:32:35 -0400 2131 2132 changes for Uruguay, Palestine, and Egypt by Paul Eggert 2133 2134 (minimalist) changes to zic.8 to clarify "until" information 2135 2136 2137 Release data2006l - 2006-09-18 12:58:11 -0400 2138 2139 Paul's best-effort work on this coming weekend's Egypt time change 2140 2141 2142 Release 2006k - 2006-08-28 12:19:09 -0400 2143 2144 changes by Paul Eggert 2145 2146 2147 Release 2006j - 2006-08-21 09:56:32 -0400 2148 2149 changes by Paul Eggert 2150 2151 2152 Release code2006i - 2006-08-07 12:30:55 -0400 2153 2154 localtime.c fixes 2155 2156 Ken Pizzini's conversion script 2157 2158 2159 Release code2006h - 2006-07-24 09:19:37 -0400 2160 2161 adds public domain notices to four files 2162 2163 includes a fix for transition times being off by a second 2164 2165 adds a new recording to the "arts" file (information courtesy Colin Bowern) 2166 2167 2168 Release 2006g - 2006-05-08 17:18:09 -0400 2169 2170 northamerica changes by Paul Eggert 2171 2172 2173 Release 2006f - 2006-05-01 11:46:00 -0400 2174 2175 a missing version number problem is fixed (with thanks to Bradley 2176 White for catching the problem) 2177 2178 2179 Release 2006d - 2006-04-17 14:33:43 -0400 2180 2181 changes by Paul Eggert 2182 2183 added new items to tz-arts.htm that were found by Paul 2184 2185 2186 Release 2006c - 2006-04-03 10:09:32 -0400 2187 2188 two sets of data changes by Paul Eggert 2189 2190 a fencepost error fix in zic.c 2191 2192 changes to zic.c and the "europe" file to minimize differences 2193 between output produced by the old 32-bit zic and the new 64-bit 2194 version 2195 2196 2197 Release 2006b - 2006-02-20 10:08:18 -0500 2198 [tz32code2006b + tz64code2006b + tzdata2006b] 2199 2200 64-bit code 2201 2202 All SCCS IDs were bumped to "8.1" for this release. 2203 2204 2205 Release 2006a - 2006-01-30 08:59:31 -0500 2206 2207 changes by Paul Eggert (in particular, Indiana time zone moves) 2208 2209 an addition to the zic manual page to describe how special-case 2210 transitions are handled 2211 2212 2213 Release 2005r - 2005-12-27 09:27:13 -0500 2214 2215 Canadian changes by Paul Eggert 2216 2217 They also add "<pre>" directives to time zone data files and reflect 2218 changes to warning message logic in "zdump.c" (but with calls to 2219 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2220 2221 2222 Release 2005q - 2005-12-13 09:17:09 -0500 2223 2224 Nothing earth-shaking here: 2225 1. Electronic mail addresses have been removed. 2226 2. Casts of the return value of exit have been removed. 2227 3. Casts of the argument of is.* macros have been added. 2228 4. Indentation in one section of zic.c has been fixed. 2229 5. References to dead URLs in the data files have been dealt with. 2230 2231 2232 Release 2005p - 2005-12-05 10:30:53 -0500 2233 2234 "systemv", "tz-link.htm", and "zdump.c" changes 2235 (less the casts of arguments to the is* macros) 2236 2237 2238 Release 2005o - 2005-11-28 10:55:26 -0500 2239 2240 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2241 2242 zdump.c lint fixes by Arthur David Olson 2243 2244 2245 Release 2005n - 2005-10-03 09:44:09 -0400 2246 2247 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2248 et al. changes) 2249 2250 2251 Release 2005m - 2005-08-29 12:15:40 -0400 2252 2253 changes by Paul Eggert (with a small tweak to the tz-art change) 2254 2255 a declaration of an unused variable has been removed from zdump.c 2256 2257 2258 Release 2005l - 2005-08-22 12:06:39 -0400 2259 2260 changes by Paul Eggert 2261 2262 overflow/underflow checks by Arthur David Olson, minus changes to 2263 the "Theory" file about the pending addition of 64-bit data (I grow 2264 less confident of the changes being accepted with each passing day, 2265 and the changes no longer increase the data files nine-fold--there's 2266 less than a doubling in size by my local Sun's reckoning) 2267 2268 2269 Release 2005k - 2005-07-14 14:14:24 -0400 2270 2271 The "leapseconds" file has been edited to reflect the recently 2272 announced leap second at the end of 2005. 2273 2274 I've also deleted electronic mail addresses from the files as an 2275 anti-spam measure. 2276 2277 2278 Release 2005j - 2005-06-13 14:34:13 -0400 2279 2280 These reflect changes to limit the length of time zone abbreviations 2281 and the characters used in those abbreviations. 2282 2283 There are also changes to handle POSIX-style "quoted" time zone 2284 environment variables. 2285 2286 The changes were circulated on the time zone mailing list; the only 2287 change since then was the removal of a couple of minimum-length of 2288 abbreviation checks. 2289 2290 2291 Release data2005i - 2005-04-21 15:04:16 -0400 2292 2293 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2294 2295 2296 Release 2005h - 2005-04-04 11:24:47 -0400 2297 2298 changes by Paul Eggert 2299 2300 minor changes to Makefile and zdump.c to produce more useful output 2301 when doing a "make typecheck" 2302 2303 2304 Release 2005g - 2005-03-14 10:11:21 -0500 2305 2306 changes by Paul Eggert (a change to current DST rules in Uruguay and 2307 an update to a link to time zone software) 2308 2309 2310 Release 2005f - 2005-03-01 08:45:32 -0500 2311 2312 data and documentation changes by Paul Eggert 2313 2314 2315 Release 2005e - 2005-02-10 15:59:44 -0500 2316 2317 [not summarized] 2318 2319 2320 Release code2005d - 2005-01-31 09:21:47 -0500 2321 2322 make zic complain about links to links if the -v flag is used 2323 2324 have "make public" do more code checking 2325 2326 add an include to "localtime.c" for the benefit of gcc systems 2327 2328 2329 Release 2005c - 2005-01-17 18:36:29 -0500 2330 2331 get better results when mktime runs on a system where time_t is double 2332 2333 changes to the data files (most importantly to Paraguay) 2334 2335 2336 Release 2005b - 2005-01-10 09:19:54 -0500 2337 2338 Get localtime and gmtime working on systems with exotic time_t types. 2339 2340 Update the leap second commentary in the "leapseconds" file. 2341 2342 2343 Release 2005a - 2005-01-01 13:13:44 -0500 2344 2345 [not summarized] 2346 2347 2348 Release code2004i - 2004-12-14 13:42:58 -0500 2349 2350 Deal with systems where time_t is unsigned. 2351 2352 2353 Release code2004h - 2004-12-07 11:40:18 -0500 2354 2355 64-bit-time_t changes 2356 2357 2358 Release 2004g - 2004-11-02 09:06:01 -0500 2359 2360 update to Cuba (taking effect this weekend) 2361 2362 other changes by Paul Eggert 2363 2364 correction of the spelling of Oslo 2365 2366 changed versions of difftime.c and private.h 2367 2368 2369 Release code2004f - 2004-10-21 10:25:22 -0400 2370 2371 Cope with wide-ranging tm_year values. 2372 2373 2374 Release 2004e - 2004-10-11 14:47:21 -0400 2375 2376 Brazil/Argentina/Israel changes by Paul Eggert 2377 2378 changes to tz-link.htm by Paul 2379 2380 one small fix to Makefile 2381 2382 2383 Release 2004d - 2004-09-22 08:27:29 -0400 2384 2385 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2386 2387 2388 Release 2004c - 2004-08-11 12:06:26 -0400 2389 2390 asctime-related changes 2391 2392 (variants of) some of the documentation changes suggested by Paul Eggert 2393 2394 2395 Release 2004b - 2004-07-19 14:33:35 -0400 2396 2397 data changes by Paul Eggert - most importantly, updates for Argentina 2398 2399 2400 Release 2004a - 2004-05-27 12:00:47 -0400 2401 2402 changes by Paul Eggert 2403 2404 Handle DST transitions that occur at the end of a month in some 2405 years but at the start of the following month in other years. 2406 2407 Add a copy of the correspondence that's the basis for claims about 2408 DST in the Navajo Nation. 2409 2410 2411 Release 2003e - 2003-12-15 09:36:47 -0500 2412 2413 changes by Arthur David Olson (primarily code changes) 2414 2415 changes by Paul Eggert (primarily data changes) 2416 2417 minor changes to "Makefile" and "northamerica" (in the latter case, 2418 optimization of the "Toronto" rules) 2419 2420 2421 Release 2003d - 2003-10-06 09:34:44 -0400 2422 2423 changes by Paul Eggert 2424 2425 2426 Release 2003c - 2003-09-16 10:47:05 -0400 2427 2428 Fix bad returns in zic.c's inleap function. 2429 Thanks to Bradley White for catching the problem! 2430 2431 2432 Release 2003b - 2003-09-16 07:13:44 -0400 2433 2434 Add a "--version" option (and documentation) to the zic and zdump commands. 2435 2436 changes to overflow/underflow checking in zic 2437 2438 a localtime typo fix. 2439 2440 Update the leapseconds and tz-art.htm files. 2441 2442 2443 Release 2003a - 2003-03-24 09:30:54 -0500 2444 2445 changes by Paul Eggert 2446 2447 a few additions and modifications to the tz-art.htm file 2448 2449 2450 Release 2002d - 2002-10-15 13:12:42 -0400 2451 2452 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2453 2454 There's also a new time zone quote in "tz-art.htm". 2455 2456 2457 Release 2002c - 2002-04-04 11:55:20 -0500 2458 2459 changes by Paul Eggert 2460 2461 Change zic.c to avoid creating symlinks to files that don't exist. 2462 2463 2464 Release 2002b - 2002-01-28 12:56:03 -0500 2465 2466 [These change notes are for Release 2002a, which was corrupted. 2467 2002b was a corrected version of 2002a.] 2468 2469 changes by Paul Eggert 2470 2471 Update the "leapseconds" file to note that there'll be no leap 2472 second at the end of June, 2002. 2473 2474 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2475 2476 Change to "difftime.c" to avoid sizeof problems. 2477 2478 2479 Release 2001d - 2001-10-09 13:31:32 -0400 2480 2481 changes by Paul Eggert 2482 2483 2484 Release 2001c - 2001-06-05 13:59:55 -0400 2485 2486 changes by Paul Eggert and Andrew Brown 2487 2488 2489 Release 2001b - 2001-04-05 16:44:38 -0400 2490 2491 changes by Paul Eggert (modulo jnorgard's typo fix) 2492 2493 tz-art.htm has been HTMLified. 2494 2495 2496 Release 2001a - 2001-03-13 12:57:44 -0500 2497 2498 changes by Paul Eggert 2499 2500 An addition to the "leapseconds" file: comments with the text of the 2501 latest IERS leap second notice. 2502 2503 Trailing white space has been removed from data file lines, and 2504 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2505 converted to tabs. 2506 2507 2508 Release 2000h - 2000-12-14 15:33:38 -0500 2509 2510 changes by Paul Eggert 2511 2512 one typo fix in the "art" file 2513 2514 With providence, this is the last update of the millennium. 2515 2516 2517 Release 2000g - 2000-10-10 11:35:22 -0400 2518 2519 changes by Paul Eggert 2520 2521 correction of John Mackin's name submitted by Robert Elz 2522 2523 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2524 Emmy Awards broadcast. 2525 2526 2527 Release 2000f - 2000-08-10 09:31:58 -0400 2528 2529 changes by Paul Eggert 2530 2531 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2532 2533 Error checking and messages in the "yearistype" script have been 2534 improved. 2535 2536 2537 Release 2000e - 2000-07-31 09:27:54 -0400 2538 2539 data changes by Paul Eggert 2540 2541 a change to the default value of the defined constant HAVE_STRERROR 2542 2543 the addition of a Dave Barry quote on DST to the tz-arts file 2544 2545 2546 Release 2000d - 2000-04-20 15:43:04 -0400 2547 2548 changes to the documentation and code of strftime for C99 conformance 2549 2550 a bug fix for date.c 2551 2552 These are based on (though modified from) changes by Paul Eggert. 2553 2554 2555 Release 2000c - 2000-03-04 10:31:43 -0500 2556 2557 changes by Paul Eggert 2558 2559 2560 Release 2000b - 2000-02-21 12:16:29 -0500 2561 2562 changes by Paul Eggert and Joseph Myers 2563 2564 modest tweaks to the tz-art.htm and tz-link.htm files 2565 2566 2567 Release 2000a - 2000-01-18 09:21:26 -0500 2568 2569 changes by Paul Eggert 2570 2571 The two hypertext documents have also been renamed. 2572 2573 2574 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2575 2576 Paul Eggert's changes 2577 2578 additions to the "zic" manual page and the "Arts.htm" file 2579 2580 2581 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2582 2583 [not summarized] 2584 2585 2586 Release data1999h - 1999-10-07 03:50:29 -0400 2587 2588 changes by Paul Eggert to "europe" (most importantly, fixing 2589 Lithuania and Estonia) 2590 2591 2592 Release 1999g - 1999-09-28 11:06:18 -0400 2593 2594 data changes by Paul Eggert (most importantly, the change for 2595 Lebanon that buys correctness for this coming Sunday) 2596 2597 The "code" file contains changes to "Makefile" and "checktab.awk" to 2598 allow better checking of time zone files before they are published. 2599 2600 2601 Release 1999f - 1999-09-23 09:48:14 -0400 2602 2603 changes by Arthur David Olson and Paul Eggert 2604 2605 2606 Release 1999e - 1999-08-17 15:20:54 -0400 2607 2608 changes circulated by Paul Eggert, although the change to handling 2609 of DST-specifying time zone names has been commented out for now 2610 (search for "XXX" in "localtime.c" for details). These files also 2611 do not make any changes to the start of DST in Brazil. 2612 2613 In addition to Paul's changes, there are updates to "Arts.htm" and 2614 cleanups of URLs. 2615 2616 2617 Release 1999d - 1999-03-30 11:31:07 -0500 2618 2619 changes by Paul Eggert 2620 2621 The Makefile's "make public" rule has also been changed to do a test 2622 compile of each individual time zone data file (which should help 2623 avoid problems such as the one we had with Nicosia). 2624 2625 2626 Release 1999c - 1999-03-25 09:47:47 -0500 2627 2628 changes by Paul Eggert, most importantly the change for Chile. 2629 2630 2631 Release 1999b - 1999-02-01 17:51:44 -0500 2632 2633 changes by Paul Eggert 2634 2635 code changes (suggested by Mani Varadarajan, mani at be.com) for 2636 correct handling of symbolic links when building using a relative directory 2637 2638 code changes to generate correct messages for failed links 2639 2640 updates to the URLs in Arts.htm 2641 2642 2643 Release 1999a - 1999-01-19 16:20:29 -0500 2644 2645 error message internationalizations and corrections in zic.c and 2646 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2647 to whom thanks!) 2648 2649 2650 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2651 2652 changes for Brazil, Chile, and Germany 2653 2654 support for use of "24:00" in the input files for the time zone compiler 2655 2656 2657 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2658 2659 changes by Paul Eggert 2660 2661 correction to a define in the "private.h" file 2662 2663 2664 Release data1998g - 1998-08-11 03:28:35 -0000 2665 [tzdata1998g.tar.gz is missing!] 2666 2667 Lithuanian change provided by mgedmin at pub.osf.it 2668 2669 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2670 "backward") to ensure that the GMT file is created even where folks 2671 don't want the "backward" links (as suggested by Paul Eggert). 2672 2673 2674 Release data1998f - 1998-07-20 13:50:00 -0000 2675 [tzdata1998f.tar.gz is missing!] 2676 2677 Update the "leapseconds" file to include the newly-announced 2678 insertion at the end of 1998. 2679 2680 2681 Release code1998f - 1998-06-01 10:18:31 -0400 2682 2683 addition to localtime.c by Guy Harris 2684 2685 2686 Release 1998e - 1998-05-28 09:56:26 -0400 2687 2688 The Makefile is changed to produce zoneinfo-posix rather than 2689 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2690 zoneinfo/right. 2691 2692 data changes by Paul Eggert 2693 2694 changes from Guy Harris to provide asctime_r and ctime_r 2695 2696 A usno1998 file (substantially identical to usno1997) has been added. 2697 2698 2699 Release 1998d - 1998-05-14 11:58:34 -0400 2700 2701 changes to comments (in particular, elimination of references to CIA maps). 2702 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2703 where changes occur. 2704 2705 2706 Release 1998c - 1998-02-28 12:32:26 -0500 2707 2708 changes by Paul Eggert (save the "French correction," on which I'll 2709 wait for the dust to settle) 2710 2711 symlink changes 2712 2713 changes and additions to Arts.htm 2714 2715 2716 Release 1998b - 1998-01-17 14:31:51 -0500 2717 2718 URL cleanups and additions 2719 2720 2721 Release 1998a - 1998-01-13 12:37:35 -0500 2722 2723 changes by Paul Eggert 2724 2725 2726 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 2727 2728 changes by Paul Eggert, with minor modifications from Arthur David 2729 Olson to make the files more browser friendly 2730 2731 2732 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 2733 2734 minor changes to put "TZif" at the start of each time zone information file 2735 2736 a rule has also been added to the Makefile so you can 2737 make zones 2738 to just recompile the zone information files (rather than doing a 2739 full "make install" with its other effects). 2740 2741 2742 Release data1997i - 1997-10-07 08:45:38 -0400 2743 2744 changes to Africa by Paul Eggert 2745 2746 2747 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 2748 2749 corrections for Uruguay (and other locations) 2750 2751 Arthur David Olson's simple-minded fix allowing mktime to both 2752 correctly handle leap seconds and correctly handle tm_sec values 2753 upon which arithmetic has been performed. 2754 2755 2756 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 2757 2758 Paul Eggert's updates 2759 2760 a small change to a function prototype; 2761 2762 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 2763 include information on Around the World in Eighty Days. 2764 2765 2766 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 2767 2768 fixes to zic's error handling 2769 2770 changes inspired by the item circulated on Slovenia 2771 2772 The description of Web resources has been HTMLified for browsing 2773 convenience. 2774 2775 A new piece of tz-related music has been added to the "Music" file. 2776 2777 2778 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 2779 2780 Paul Eggert's latest suggestions 2781 2782 2783 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 2784 2785 changes to "zic.c" to correct performance of the "-s" option 2786 2787 a new file "usno1997" 2788 2789 2790 Release data1997c - 1997-03-04 09:58:18 -0500 2791 2792 changes in Israel 2793 2794 2795 Release 1997b - 1997-02-27 18:34:19 -0500 2796 2797 The data file incorporates the 1997 leap second. 2798 2799 The code file incorporates Arthur David Olson's take on the 2800 zic/multiprocessor/directory-creation situation. 2801 2802 2803 Release 1997a - 1997-01-21 09:11:10 -0500 2804 2805 Paul Eggert's Antarctica (and other changes) 2806 2807 Arthur David Olson finessed the "getopt" issue by checking against 2808 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 2809 is returned while SunOS 5.5's manual says EOF is returned). 2810 2811 2812 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 2813 2814 Paul Eggert's latest changes 2815 2816 2817 Release code1996n - 1996-12-16 09:42:02 -0500 2818 2819 link snapping fix from Bruce Evans (via Garrett Wollman) 2820 2821 2822 Release data1996m - 1996-11-24 02:37:34 -0000 2823 [tzdata1996m.tar.gz is missing!] 2824 2825 Paul Eggert's batch of changes 2826 2827 2828 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 2829 2830 No functional changes here; the files have simply been changed to 2831 make more use of ISO style dates in comments. The names of the above 2832 files now include the year in full. 2833 2834 2835 Release code96l - 1996-09-08 17:12:20 -0400 2836 2837 tzcode96k was missing a couple of pieces. 2838 2839 2840 Release 96k - 1996-09-08 16:06:22 -0400 2841 2842 the latest round of changes from Paul Eggert 2843 2844 the recent Year 2000 material 2845 2846 2847 Release code96j - 1996-07-30 13:18:53 -0400 2848 2849 Set sp->typecnt as suggested by Timothy Patrick Murphy. 2850 2851 2852 Release code96i - 1996-07-27 20:11:35 -0400 2853 2854 Paul's suggested patch for strftime %V week numbers 2855 2856 2857 Release data96i - 1996-07-01 18:13:04 -0400 2858 2859 "northamerica" and "europe" changes by Paul Eggert 2860 2861 2862 Release code96h - 1996-06-05 08:02:21 -0400 2863 2864 fix for handling transitions specified in Universal Time 2865 2866 Some "public domain" notices have also been added. 2867 2868 2869 Release code96g - 1996-05-16 14:00:26 -0400 2870 2871 fix for the simultaneous-DST-and-zone-change challenge 2872 2873 2874 Release data96h - 1996-05-09 17:40:51 -0400 2875 2876 changes by Paul Eggert 2877 2878 2879 Release code96f-data96g - 1996-05-03 03:09:59 -0000 2880 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 2881 2882 The changes get us some of the way to fixing the problems noted in Paul 2883 Eggert's letter yesterday (in addition to a few others). The approach 2884 has been to make zic a bit smarter about figuring out what time zone 2885 abbreviations apply just after the time specified in the "UNTIL" part 2886 of a zone line. Putting the smarts in zic means avoiding having 2887 transition times show up in both "Zone" lines and "Rule" lines, which 2888 in turn avoids multiple transition time entries in time zone files. 2889 (This also makes the zic input files such as "europe" a bit shorter and 2890 should ease maintenance.) 2891 2892 2893 Release data96f - 1996-04-19 19:20:03 -0000 2894 [tzdata96f.tar.gz is missing!] 2895 2896 The only changes are to the "northamerica" file; the time zone 2897 abbreviation for Denver is corrected to MST (and MDT), and the 2898 comments for Mexico have been updated. 2899 2900 2901 Release data96e - 1996-03-19 17:37:26 -0500 2902 2903 Proposals by Paul Eggert, in particular the Portugal change that 2904 comes into play at the end of this month. 2905 2906 2907 Release data96d - 1996-03-18 20:49:39 -0500 2908 2909 [not summarized] 2910 2911 2912 Release code96e - 1996-02-29 15:43:27 -0000 2913 [tzcode96e.tar.gz is missing!] 2914 2915 internationalization changes and the fix to the documentation for strftime 2916 2917 2918 Release code96d-data96c - 1996-02-12 11:05:27 -0500 2919 2920 The "code" file simply updates Bob Kridle's electronic address. 2921 2922 The "data" file updates rules for Mexico. 2923 2924 2925 Release data96b - 1996-01-27 15:44:42 -0500 2926 2927 Kiribati change 2928 2929 2930 Release code96c - 1996-01-16 16:58:15 -0500 2931 2932 leap-year streamlining and binary-search changes 2933 2934 fix to newctime.3 2935 2936 2937 Release code96b - 1996-01-10 20:42:39 -0500 2938 2939 fixes and enhancements from Paul Eggert, including code that 2940 emulates the behavior of recent versions of the SunOS "date" 2941 command. 2942 2943 2944 Release 96a - 1996-01-06 09:08:24 -0500 2945 2946 Israel updates 2947 2948 fixes to strftime.c for correct ISO 8601 week number generation, 2949 plus support for two new formats ('G' and 'g') to give ISO 8601 year 2950 numbers (which are not necessarily the same as calendar year numbers) 2951 2952 2953 Release code95i-data95m - 1995-12-21 12:46:47 -0500 2954 2955 The latest revisions from Paul Eggert are included, the usno1995 2956 file has been updated, and a new file ("WWW") covering useful URLs 2957 has been added. 2958 2959 2960 Release code95h-data95l - 1995-12-19 18:10:12 -0500 2961 2962 A simplification of a macro definition, a change to data for Sudan, 2963 and (for last minute shoppers) notes in the "Music" file on the CD 2964 "Old Man Time". 2965 2966 2967 Release code95g-data95k - 1995-10-30 10:32:47 -0500 2968 2969 (slightly reformatted) 8-bit-clean proposed patch 2970 2971 minor patch: US/Eastern -> America/New_York 2972 2973 snapshot of the USNO's latest data ("usno1995") 2974 2975 some other minor cleanups 2976 2977 2978 Release code95f-data95j - 1995-10-28 21:01:34 -0000 2979 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 2980 2981 European cleanups 2982 2983 support for 64-bit time_t's 2984 2985 optimization in localtime.c 2986 2987 2988 Release code95e - 1995-10-13 13:23:57 -0400 2989 2990 the mktime change to scan from future to past when trying to find time zone 2991 offsets 2992 2993 2994 Release data95i - 1995-09-26 10:43:26 -0400 2995 2996 For Canada/Central, guess that the Sun customer's "one week too 2997 early" was just a approximation, and the true error is one month 2998 too early. This is consistent with the rest of Canada. 2999 3000 3001 Release data95h - 1995-09-21 11:26:48 -0400 3002 3003 latest changes from Paul Eggert 3004 3005 3006 Release code95d - 1995-09-14 11:14:45 -0400 3007 3008 the addition of a "Music" file, which documents four recorded 3009 versions of the tune "Save That Time". 3010 3011 3012 Release data95g - 1995-09-01 17:21:36 -0400 3013 3014 "yearistype" correction 3015 3016 3017 Release data95f - 1995-08-28 20:46:56 -0400 3018 3019 Paul Eggert's change to the australasia file 3020 3021 3022 Release data95e - 1995-07-08 18:02:34 -0400 3023 3024 The only change is a leap second at the end of this year. 3025 Thanks to Bradley White for forwarding news on the leap second. 3026 3027 3028 Release data95d - 1995-07-03 13:26:22 -0400 3029 3030 Paul Eggert's changes 3031 3032 3033 Release data95c - 1995-07-02 19:19:28 -0400 3034 3035 changes to "asia", "backward", "europe", and "southamerica" 3036 (read: northamericacentrics need not apply) 3037 3038 3039 Release code95c - 1995-03-13 14:00:46 -0500 3040 3041 one-line fix for sign extension problems in detzcode 3042 3043 3044 Release 95b - 1995-03-04 11:22:38 -0500 3045 3046 Minor changes in both: 3047 3048 The "code" file contains a workaround for the lack of "unistd.h" in 3049 Microsoft C++ version 7. 3050 3051 The "data" file contains a fixed "Link" for America/Shiprock. 3052 3053 3054 Release 94h - 1994-12-10 12:51:14 -0500 3055 3056 The files: 3057 3058 * incorporate the changes to "zdump" and "date" to make changes to 3059 the "TZ" environment variable permanent; 3060 3061 * incorporate the table changes by Paul Eggert; 3062 3063 * include (and document) support for universal time specifications in 3064 data files - but do not (yet) include use of this feature in the 3065 data files. 3066 3067 Think of this as "TZ Classic" - the software has been set up not to break if 3068 universal time shows up in its input, and data entries have been 3069 left as is so as not to break existing implementations. 3070 3071 3072 Release data94f - 1994-08-20 12:56:09 -0400 3073 3074 (with thanks!) the latest data updates from Paul Eggert 3075 3076 3077 Release data94e - 1994-06-04 13:13:53 -0400 3078 3079 [not summarized] 3080 3081 3082 Release code94g - 1994-05-05 12:14:07 -0400 3083 3084 fix missing "optind.c" and a reference to it in the Makefile 3085 3086 3087 Release code94f - 1994-05-05 13:00:33 -0000 3088 [tzcode94f.tar.gz is missing!] 3089 3090 changes to avoid overflow in difftime, as well as changes to cope 3091 with the 52/53 challenge in strftime 3092 3093 3094 Release code94e - 1994-03-30 23:32:59 -0500 3095 3096 change for the benefit of PCTS 3097 3098 3099 Release 94d - 1994-02-24 15:42:25 -0500 3100 3101 Avoid clashes with POSIX semantics for zones such as GMT+4. 3102 3103 Some other very minor housekeeping is also present. 3104 3105 3106 Release code94c - 1994-02-10 08:52:40 -0500 3107 3108 Fix bug where mkdirs was broken unless you compile with 3109 -fwritable-strings (which is generally losing to do). 3110 3111 3112 Release 94b - 1994-02-07 10:04:33 -0500 3113 3114 work by Paul Eggert who notes: 3115 3116 I found another book of time zone histories by E W Whitman; it's not 3117 as extensive as Shanks but has a few goodies of its own. I used it 3118 to update the tables. I also fixed some more as a result of 3119 correspondence with Adam David and Peter Ilieve, and move some stray 3120 links from 'europe' to 'backward'. I corrected some scanning errors 3121 in usno1989. 3122 3123 As far as the code goes, I fixed zic to allow years in the range 3124 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 3125 And I cleaned up the zic documentation a little bit. 3126 3127 3128 Release data94a - 1994-02-03 08:58:54 -0500 3129 3130 It simply incorporates the recently announced leap second into the 3131 "leapseconds" file. 3132 3133 3134 Release 93g - 1993-11-22 17:28:27 -0500 3135 3136 Paul Eggert has provided a good deal of historic information (based 3137 on Shanks), and there are some code changes to deal with the buglets 3138 that crawled out in dealing with the new information. 3139 3140 3141 Release 93f - 1993-10-15 12:27:46 -0400 3142 3143 Paul Eggert's changes 3144 3145 3146 Release 93e - 1993-09-05 21:21:44 -0400 3147 3148 This has updated data for Israel, England, and Kwajalein. There's 3149 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 3150 Thanks to Paul Eggert and Peter Ilieve for the changes. 3151 3152 3153 Release 93d - 1993-06-17 23:34:17 -0400 3154 3155 new fix and new data on Israel 3156 3157 3158 Release 93c - 1993-06-06 19:31:55 -0400 3159 3160 [not summarized] 3161 3162 3163 Release 93b - 1993-02-02 14:53:58 -0500 3164 3165 updated "leapseconds" file 3166 3167 3168 Release 93 - 1993-01-08 07:01:06 -0500 3169 3170 At kre's suggestion, the package has been split in two - a code piece 3171 (which also includes documentation) that's only of use to folks who 3172 want to recompile things and a data piece useful to anyone who can 3173 run "zic". 3174 3175 The new version has a few changes to the data files, a few 3176 portability changes, and an off-by-one fix (with thanks to 3177 Tom Karzes at deshaw.com for providing a description and a 3178 solution). 3179 3180 3181 Release 92c - 1992-11-21 17:35:36 -0000 3182 [tz92c.tar.Z is missing!] 3183 3184 The fallout from the latest round of DST transitions. 3185 3186 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3187 there's also a change to "zic.c" that makes it portable to more systems. 3188 3189 3190 Release 92 - 1992-04-25 18:17:03 -0000 3191 [tz92.tar.Z is missing!] 3192 3193 By popular demand (well, at any rate, following a request by kre at munnari) 3194 3195 3196 The 1989 update of the time zone package featured: 3197 3198 * POSIXization (including interpretation of POSIX-style TZ environment 3199 variables, provided by Guy Harris), 3200 * ANSIfication (including versions of "mktime" and "difftime"), 3201 * SVIDulation (an "altzone" variable) 3202 * MACHination (the "gtime" function) 3203 * corrections to some time zone data (including corrections to the rules 3204 for Great Britain and New Zealand) 3205 * reference data from the United States Naval Observatory for folks who 3206 want to do additional time zones 3207 * and the 1989 data for Saudi Arabia. 3208 3209 (Since this code will be treated as "part of the implementation" in some 3210 places and as "part of the application" in others, there's no good way to 3211 name functions, such as timegm, that are not part of the proposed ANSI C 3212 standard; such functions have kept their old, underscore-free names in this 3213 update.) 3214 3215 And the "dysize" function has disappeared; it was present to allow 3216 compilation of the "date" command on old BSD systems, and a version of "date" 3217 is now provided in the package. The "date" command is not created when you 3218 "make all" since it may lack options provided by the version distributed with 3219 your operating system, or may not interact with the system in the same way 3220 the native version does. 3221 3222 Since POSIX frowns on correct leap second handling, the default behavior of 3223 the "zic" command (in the absence of a "-L" option) has been changed to omit 3224 leap second information from its output files. 3225 3226 3227 ----- 3228 Notes 3229 3230 This file contains copies of the part of each release announcement 3231 that talks about the changes in that release. The text has been 3232 adapted and reformatted for the purposes of this file. 3233 3234 Typically a release R consists of a pair of tarball files, 3235 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3236 code2010a, data2012c) consist of just one or the other tarball, and a 3237 few (e.g., code2012c-data2012d) have tarballs with mixed version 3238 numbers. 3239 3240 Release time stamps are taken from the release's commit (for newer, 3241 git releases), from the newest file in the tarball (for older 3242 releases, where this info is available) or from the email announcing 3243 the release (if all else fails; these are marked with a time zone of 3244 -0000 and an "is missing!" comment). 3245 3246 Earlier versions of the code and data were not announced on the tz 3247 list and are not summarized here. 3248 3249 This file is in the public domain. 3250 3251 Local Variables: 3252 coding: utf-8 3253 End: 3254
Indexes created Wed Apr 01 00:32:07 UTC 2026