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