NEWS revision 1.14
1 News for the tz database 2 3 Release 2015g - 2015-10-01 00:39:51 -0700 4 5 Changes affecting future time stamps 6 7 Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25. 8 (Thanks to Fatih.) 9 10 Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time. 11 (Thanks to Alexander Krivenyshev.) 12 13 Fiji's 2016 fall-back transition is scheduled for January 17, not 24. 14 (Thanks to Ken Rylander.) 15 16 Fort Nelson, British Columbia will not fall back on 2015-11-01. It has 17 effectively been on MST (-0700) since it advanced its clocks on 2015-03-08. 18 New zone America/Fort_Nelson. (Thanks to Matt Johnson.) 19 20 Changes affecting past time stamps 21 22 Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00. 23 24 Changes affecting code 25 26 localtime no longer mishandles America/Anchorage after 2037. 27 (Thanks to Bradley White for reporting the bug.) 28 29 The localtime module allows the variables 'timezone', 'daylight', 30 and 'altzone' to be in common storage shared with other modules, 31 and declares them in case the system <time.h> does not. 32 (Problems reported by Kees Dekker.) 33 34 On platforms with tm_zone, strftime.c now assumes it is not NULL. 35 This simplifies the code and is consistent with zdump.c. 36 (Problem reported by Christos Zoulas.) 37 38 Changes affecting documentation 39 40 The tzfile man page now documents that transition times denote the 41 starts (not the ends) of the corresponding time periods. 42 (Ambiguity reported by Bill Seymour.) 43 44 45 Release 2015f - 2015-08-10 18:06:56 -0700 46 47 Changes affecting future time stamps 48 49 North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) 50 The abbreviation remains "KST". (Thanks to Robert Elz.) 51 52 Uruguay no longer observes DST. (Thanks to Steffen Thorsen 53 and Pablo Camargo.) 54 55 Changes affecting past and future time stamps 56 57 Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. 58 (Thanks to Roman Tudos.) 59 60 Changes affecting data format and code 61 62 zic's '-y YEARISTYPE' option is no longer documented. The TYPE 63 field of a Rule line should now be '-'; the old values 'even', 64 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. 65 Although the implementation has not changed, these features do not 66 work in the default installation, they are not used in the data, 67 and they are now considered obsolescent. 68 69 zic now checks that two rules don't take effect at the same time. 70 (Thanks to Jon Skeet and Arthur David Olson.) Constraints on 71 simultaneity are now documented. 72 73 The two characters '%z' in a zone format now stand for the UTC 74 offset, e.g., '-07' for seven hours behind UTC and '+0530' for 75 five hours and thirty minutes ahead. This better supports time 76 zone abbreviations conforming to POSIX.1-2001 and later. 77 78 Changes affecting installed data files 79 80 Comments for America/Halifax and America/Glace_Bay have been improved. 81 (Thanks to Brian Inglis.) 82 83 Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, 84 Europe/Sofia, and Europe/Tallinn. This yields slightly smaller 85 installed data files for Europe/Simferopol and Europe/Tallinn. 86 It does not affect timestamps. (Thanks to Howard Hinnant.) 87 88 Changes affecting code 89 90 zdump and zic no longer warn about valid time zone abbreviations 91 like '-05'. 92 93 Some Visual Studio 2013 warnings have been suppressed. 94 (Thanks to Kees Dekker.) 95 96 'date' no longer sets the time of day and its -a, -d, -n and -t 97 options have been removed. Long obsolescent, the implementation 98 of these features had porting problems. Builders no longer need 99 to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. 100 (Thanks to Kees Dekker for pointing out the problem.) 101 102 Changes affecting documentation 103 104 The Theory file mentions naming issues earlier, as these seem to be 105 poorly publicized (thanks to Gilmore Davidson for reporting the problem). 106 107 tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). 108 109 Mention that Herbert Samuel introduced the term "Summer Time". 110 111 112 Release 2015e - 2015-06-13 10:56:02 -0700 113 114 Changes affecting future time stamps 115 116 Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, 117 not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.) 118 119 Assume Cayman Islands will observe DST starting next year, using US rules. 120 Although it isn't guaranteed, it is the most likely. 121 122 Changes affecting data format 123 124 The file 'iso3166.tab' now uses UTF-8, so that its entries can better 125 spell the names of land Islands, Cte d'Ivoire, and Runion. 126 127 Changes affecting code 128 129 When displaying data, tzselect converts it to the current locale's 130 encoding if the iconv command works. (Problem reported by random832.) 131 132 tzselect no longer mishandles Dominica, fixing a bug introduced 133 in Release 2014f. (Problem reported by Owen Leibman.) 134 135 zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\". 136 This fixes a bug introduced in Release 2014f. 137 (Problem reported by Leonardo Chiquitto.) 138 139 140 Release 2015d - 2015-04-24 08:09:46 -0700 141 142 Changes affecting future time stamps 143 144 Egypt will not observe DST in 2015 and will consider canceling it 145 permanently. For now, assume no DST indefinitely. 146 (Thanks to Ahmed Nazmy and Tim Parenti.) 147 148 Changes affecting past time stamps 149 150 America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not 151 1966-07-01. Also, Yukon's time zone history is documented better. 152 (Thanks to Brian Inglis and Dennis Ferguson.) 153 154 Change affecting past and future time zone abbreviations 155 156 The abbreviations for Hawaii-Aleutian standard and daylight times 157 have been changed from HAST/HADT to HST/HDT, as per US Government 158 Printing Office style. This affects only America/Adak since 1983, 159 as America/Honolulu was already using the new style. 160 161 Changes affecting code 162 163 zic has some minor performance improvements. 164 165 166 Release 2015c - 2015-04-11 08:55:55 -0700 167 168 Changes affecting future time stamps 169 170 Egypt's spring-forward transition is at 24:00 on April's last Thursday, 171 not 00:00 on April's last Friday. 2015's transition will therefore be on 172 Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 173 apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 174 175 Changes affecting past time stamps 176 177 The following changes affect some pre-1991 Chile-related time stamps 178 in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 179 180 The 1910 transition was January 10, not January 1. 181 182 The 1918 transition was September 10, not September 1. 183 184 The UTC-4 time observed from 1932 to 1942 is now considered to be 185 standard time, not year-round DST. 186 187 Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31, 188 then reverted to standard time, then switched its time zone to 189 UTC-5 on 1947-04-01. 190 191 Assume transitions before 1968 were at 00:00, since we have no data 192 saying otherwise. 193 194 The spring 1988 transition was 1988-10-09, not 1988-10-02. 195 The fall 1990 transition was 1990-03-11, not 1990-03-18. 196 197 Assume no UTC offset change for Pacific/Easter on 1890-01-01, 198 and omit all transitions on Pacific/Easter from 1942 through 1946 199 since we have no data suggesting that they existed. 200 201 One more zone has been turned into a link, as it differed 202 from an existing zone only for older time stamps. As usual, 203 this change affects UTC offsets in pre-1970 time stamps only. 204 The zone's old contents have been moved to the 'backzone' file. 205 The affected zone is America/Montreal. 206 207 Changes affecting commentary 208 209 Mention the TZUpdater tool. 210 211 Mention "The Time Now". (Thanks to Brandon Ramsey.) 212 213 214 Release 2015b - 2015-03-19 23:28:11 -0700 215 216 Changes affecting future time stamps 217 218 Mongolia will start observing DST again this year, from the last 219 Saturday in March at 02:00 to the last Saturday in September at 00:00. 220 (Thanks to Ganbold Tsagaankhuu.) 221 222 Palestine will start DST on March 28, not March 27. Also, 223 correct the fall 2014 transition from September 26 to October 24. 224 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 225 226 Changes affecting past time stamps 227 228 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 229 regression. (Thanks to Stuart Bishop for reporting the problem.) 230 231 Some more zones have been turned into links, when they differed 232 from existing zones only for older time stamps. As usual, 233 these changes affect UTC offsets in pre-1970 time stamps only. 234 Their old contents have been moved to the 'backzone' file. 235 The affected zones are: America/Antigua, America/Cayman, 236 Pacific/Midway, and Pacific/Saipan. 237 238 Changes affecting time zone abbreviations 239 240 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 241 (Thanks to Hank W.) 242 243 Changes affecting code 244 245 Fix integer overflow bug in reference 'mktime' implementation. 246 (Problem reported by Jrg Richter.) 247 248 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 249 to be used in the same executable as standard-library time_t functions. 250 (Problems reported by Bradley White.) 251 252 Changes affecting commentary 253 254 Cite the recent Mexican decree changing Quintana Roo's time zone. 255 (Thanks to Carlos Ral Perasso.) 256 257 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 258 259 Update info about Mars time. 260 261 262 Release 2015a - 2015-01-29 22:35:20 -0800 263 264 Changes affecting future time stamps 265 266 The Mexican state of Quintana Roo, represented by America/Cancun, 267 will shift from Central Time with DST to Eastern Time without DST 268 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 269 270 Chile will not change clocks in April or thereafter; its new standard time 271 will be its old daylight saving time. This affects America/Santiago, 272 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 273 274 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 275 (Thanks to Tim Parenti.) 276 277 Changes affecting past time stamps 278 279 Iceland observed DST in 1919 and 1921, and its 1939 fallback 280 transition was Oct. 29, not Nov. 29. Remove incorrect data from 281 Shanks about time in Iceland between 1837 and 1908. 282 283 Some more zones have been turned into links, when they differed 284 from existing zones only for older time stamps. As usual, 285 these changes affect UTC offsets in pre-1970 time stamps only. 286 Their old contents have been moved to the 'backzone' file. 287 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 288 and Asia/Muscat. 289 290 Changes affecting code 291 292 tzalloc now scrubs time zone abbreviations compatibly with the way 293 that tzset always has, by replacing invalid bytes with '_' and by 294 shortening too-long abbreviations. 295 296 tzselect ports to POSIX awk implementations, no longer mishandles 297 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 298 settings to the user. (Thanks to Stefan Kuhn.) 299 300 Changes affecting build procedure 301 302 'make check' now checks for links to links in the data. 303 One such link (for Africa/Asmera) has been fixed. 304 (Thanks to Stephen Colebourne for pointing out the problem.) 305 306 Changes affecting commentary 307 308 The leapseconds file commentary now mentions the expiration date. 309 (Problem reported by Martin Burnicki.) 310 311 Update Mexican Library of Congress URL. 312 313 314 Release 2014j - 2014-11-10 17:37:11 -0800 315 316 Changes affecting current and future time stamps 317 318 Turks & Caicos' switch from US eastern time to UTC-4 year-round 319 did not occur on 2014-11-02 at 02:00. It's currently scheduled 320 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 321 322 Changes affecting past time stamps 323 324 Many pre-1989 time stamps have been corrected for Asia/Seoul and 325 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 326 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 327 longer guess that Pyongyang mimicked Seoul time after World War II, 328 as this is politically implausible. 329 330 Some more zones have been turned into links, when they differed 331 from existing zones only for older time stamps. As usual, 332 these changes affect UTC offsets in pre-1970 time stamps only. 333 Their old contents have been moved to the 'backzone' file. 334 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 335 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 336 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 337 Indian/Mayotte. 338 339 Changes affecting commentary 340 341 The commentary is less enthusiastic about Shanks as a source, 342 and is more careful to distinguish UT from UTC. 343 344 345 Release 2014i - 2014-10-21 22:04:57 -0700 346 347 Changes affecting future time stamps 348 349 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 350 (Thanks to Ken Rylander for the heads-up.) Guess that future 351 years will use a similar pattern. 352 353 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 354 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 355 (Thanks to Kiley Walbom for the heads-up.) 356 357 Changes affecting time zone abbreviations 358 359 Since Belarus is not changing its clocks even though Moscow is, 360 the time zone abbreviation in Europe/Minsk is changing from FET 361 to its more-traditional value MSK on 2014-10-26 at 01:00. 362 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 363 364 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 365 Indochina, to distinguish it better from ICT (UT+7). 366 367 Changes affecting past time stamps 368 369 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 370 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 371 authoritative book). Asia/Ho_Chi_Minh has been added to 372 zone1970.tab, to give tzselect users in Vietnam two choices, 373 since north and south Vietnam disagreed after our 1970 cutoff. 374 375 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 376 they differed from existing zones only for older time stamps. As 377 usual, these changes affect pre-1970 time stamps only. Their old 378 contents have been moved to the 'backzone' file. 379 380 Changes affecting code 381 382 The time-related library functions now set errno on failure, and 383 some crashes in the new tzalloc-related library functions have 384 been fixed. (Thanks to Christos Zoulas for reporting most of 385 these problems and for suggesting fixes.) 386 387 If USG_COMPAT is defined and the requested time stamp is standard time, 388 the tz library's localtime and mktime functions now set the extern 389 variable timezone to a value appropriate for that time stamp; and 390 similarly for ALTZONE, daylight saving time, and the altzone variable. 391 This change is a companion to the tzname change in 2014h, and is 392 designed to make timezone and altzone more compatible with tzname. 393 394 The tz library's functions now set errno to EOVERFLOW if they fail 395 because the result cannot be represented. ctime and ctime_r now 396 return NULL and set errno when a time stamp is out of range, rather 397 than having undefined behavior. 398 399 Some bugs associated with the new 2014g functions have been fixed. 400 This includes a bug that largely incapacitated the new functions 401 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 402 It also includes some uses of uninitialized variables after tzalloc. 403 The new code uses the standard type 'ssize_t', which the Makefile 404 now gives porting advice about. 405 406 Changes affecting commentary 407 408 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 409 410 411 Release 2014h - 2014-09-25 18:59:03 -0700 412 413 Changes affecting past time stamps 414 415 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 416 417 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 418 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 419 420 Some more zones have been turned into links, when they differed 421 from existing zones only for older time stamps. As usual, 422 these changes affect UTC offsets in pre-1970 time stamps only. 423 Their old contents have been moved to the 'backzone' file. 424 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 425 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 426 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 427 428 Changes affecting code 429 430 zdump -V and -v now output gmtoff= values on all platforms, 431 not merely on platforms defining TM_GMTOFF. 432 433 The tz library's localtime and mktime functions now set tzname to a value 434 appropriate for the requested time stamp, and zdump now uses this 435 on platforms not defining TM_ZONE, fixing a 2014g regression. 436 (Thanks to Tim Parenti for reporting the problem.) 437 438 The tz library no longer sets tzname if localtime or mktime fails. 439 440 zdump -c no longer mishandles transitions near year boundaries. 441 (Thanks to Tim Parenti for reporting the problem.) 442 443 An access to uninitalized data has been fixed. 444 (Thanks to Jrg Richter for reporting the problem.) 445 446 When THREAD_SAFE is defined, the code ports to the C11 memory model. 447 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 448 and two threads race to initialize data used by gmtime-like functions. 449 (Thanks to Andy Heninger for reporting the problems.) 450 451 Changes affecting build procedure 452 453 'make check' now checks better for properly-sorted data. 454 455 Changes affecting documentation and commentary 456 457 zdump's gmtoff=N output is now documented, and its isdst=D output 458 is now documented to possibly output D values other than 0 or 1. 459 460 zdump -c's treatment of years is now documented to use the 461 Gregorian calendar and Universal Time without leap seconds, 462 and its behavior at cutoff boundaries is now documented better. 463 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 464 465 Programs are now documented to use the proleptic Gregorian calendar. 466 (Thanks to Alan Barrett for the suggestion.) 467 468 Fractional-second GMT offsets have been documented for civil time 469 in 19th-century Chennai, Jakarta, and New York. 470 471 472 Release 2014g - 2014-08-28 12:31:23 -0700 473 474 Changes affecting future time stamps 475 476 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 477 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 478 [As noted in 2014j, this switch was later delayed.] 479 480 Changes affecting past time stamps 481 482 Time in Russia or the USSR before 1926 or so has been corrected by 483 a few seconds in the following zones: Asia/Irkutsk, 484 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 485 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 486 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 487 Vladimir Karpinsky.) 488 489 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 490 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 491 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 492 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 493 (Thanks to Stephen Colebourne for pointing to the decree.) 494 495 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 496 497 A new file 'backzone' contains data which may appeal to 498 connoisseurs of old time stamps, although it is out of scope for 499 the tz database, is often poorly sourced, and contains some data 500 that is known to be incorrect. The new file is not recommended 501 for ordinary use and its entries are not installed by default. 502 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 503 Isle of Man entries.) 504 505 Some more zones have been turned into links, when they differed 506 from existing zones only for older time stamps. As usual, 507 these changes affect UTC offsets in pre-1970 time stamps only. 508 Their old contents have been moved to the 'backzone' file. 509 The affected zones are: Africa/Bangui, Africa/Brazzaville, 510 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 511 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 512 513 Changes affecting code 514 515 Unless NETBSD_INSPIRED is defined to 0, the tz library now 516 supplies functions for creating and using objects that represent 517 time zones. The new functions are tzalloc, tzfree, localtime_rz, 518 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 519 time2posix_z. They are intended for performance: for example, 520 localtime_rz (unlike localtime_r) is trivially thread-safe without 521 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 522 functions, and to Alan Barrett and Jonathan Lennox for helping to 523 debug the change.) 524 525 zdump now builds with the tz library unless USE_LTZ is defined to 0, 526 This lets zdump use tz features even if the system library lacks them. 527 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 528 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 529 530 zdump now uses localtime_rz if available, as it's significantly faster, 531 and it can help zdump better diagnose invalid time zone names. 532 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 533 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 534 not available, zdump now uses localtime_r and tzset if available, 535 as this is a bit cleaner and faster than plain localtime. Compile 536 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 537 lacks these two functions. 538 539 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 540 Although not needed for tz's own applications, which are single-threaded, 541 this supports POSIX better if the tz library is used in multithreaded apps. 542 543 Some crashes have been fixed when zdump or the tz library is given 544 invalid or outlandish input. 545 546 The tz library no longer mishandles leap seconds on platforms with 547 unsigned time_t in time zones that lack ordinary transitions after 1970. 548 549 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 550 already defined, to make it easier to configure on common platforms. 551 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 552 553 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 554 assumes that reading uninitialized memory yields garbage values 555 but does not cause other problems such as traps. 556 557 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 558 more likely to guess right for ambiguous time stamps near 559 transitions where tm_isdst does not change. 560 561 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 562 strftime_l for compatibility with recent versions of POSIX. 563 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 564 to 1 on recent POSIX versions, and to 0 otherwise. 565 566 tzselect -c now uses a hybrid distance measure that works better 567 in Africa. (Thanks to Alan Barrett for noting the problem.) 568 569 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 570 or when time_tz is defined. 571 572 When HAVE_UTMPX_H is set the 'date' command now builds on systems 573 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 574 the date it updates the wtmpx file if _PATH_WTMPX is defined. 575 This affects GNU/Linux and similar systems. 576 577 For easier maintenance later, some C code has been simplified, 578 some lint has been removed, and the code has been tweaked so that 579 plain 'make' is more likely to work. 580 581 The C type 'bool' is now used for boolean values, instead of 'int'. 582 583 The long-obsolete LOCALE_HOME code has been removed. 584 585 The long-obsolete 'gtime' function has been removed. 586 587 Changes affecting build procedure 588 589 'zdump' no longer links in ialloc.o, as it's not needed. 590 591 'make check_time_t_alternatives' no longer assumes GNU diff. 592 593 Changes affecting distribution tarballs 594 595 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 596 the tzdata tarball instead of the tzcode tarball, since they help 597 maintain the data. The NEWS and Theory files are now also 598 distributed in the tzdata tarball, as they're relevant for data. 599 (Thanks to Alan Barrett for pointing this out.) Also, the 600 leapseconds.awk file is no longer distributed in the tzcode 601 tarball, since it belongs in the tzdata tarball (where 2014f 602 inadvertently also distributed it). 603 604 Changes affecting documentation and commentary 605 606 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 607 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 608 for debugging it.) 609 610 The man pages have been updated to use function prototypes, 611 to document thread-safe variants like localtime_r, and to document 612 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 613 mktime_z. 614 615 The fields in Link lines have been renamed to be more descriptive 616 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 617 and LINK-TO has become LINK-NAME. 618 619 tz-link.htm mentions the IETF's tzdist working group; Windows 620 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 621 622 Some broken URLs have been fixed in the commentary. (Thanks to 623 Lester Caine.) 624 625 Commentary about Philippines DST has been updated, and commentary 626 on pre-1970 time in India has been added. 627 628 629 Release 2014f - 2014-08-05 17:42:36 -0700 630 631 Changes affecting future time stamps 632 633 Russia will subtract an hour from most of its time zones on 2014-10-26 634 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 635 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 636 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 637 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 638 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 639 (Europe/Samara) are not changing their clocks. The changed zones are 640 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 641 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 642 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 643 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 644 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 645 but not its UTC offset. Two zones are added: Asia/Chita (split 646 from Asia/Yakutsk, and also with two hours subtracted) and 647 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 648 subtracted). (Thanks to Tim Parenti for much of the above.) 649 650 Changes affecting time zone abbreviations 651 652 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 653 and similarly for the other Australian zones. That is, for eastern 654 standard and daylight saving time the abbreviations are AEST and AEDT 655 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 656 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 657 This change does not affect UTC offsets, only time zone abbreviations. 658 (Thanks to Rich Tibbett and many others.) 659 660 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 661 effective 2014-10-26 at 02:00 local time. 662 663 The time zone abbreviation for Xinjiang Time (observed in rmqi) 664 has been changed from URUT to XJT. (Thanks to Luther Ma.) 665 666 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 667 Similarly, prefer EET/EEST for eastern European time in Russia. 668 669 Change time zone abbreviations in (western) Samoa to use "ST" and 670 "DT" suffixes, as this is more likely to match common practice. 671 Prefix "W" to (western) Samoa time when its standard-time offset 672 disagrees with that of American Samoa. 673 674 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 675 676 Time zone abbreviations have been updated for Japan's two time 677 zones used 1896-1937. JWST now stands for Western Standard 678 Time, and JCST for Central Standard Time (formerly this was CJT). 679 These abbreviations are now used for time in Korea, Taiwan, 680 and Sakhalin while controlled by Japan. 681 682 Changes affecting past time stamps 683 684 China's five zones have been simplified to two, since the post-1970 685 differences in the other three seem to have been imaginary. The 686 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 687 removed; backwards-compatibility links still work, albeit with 688 different behaviors for time stamps before May 1980. Asia/Urumqi's 689 1980 transition to UTC+8 has been removed, so that it is now at 690 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 691 Treindl sent helpful translations of two papers by Guo Qingsheng.) 692 693 Some zones have been turned into links, when they differed from existing 694 zones only for older UTC offsets where data entries were likely invented. 695 These changes affect UTC offsets in pre-1970 time stamps only. This is 696 similar to the change in release 2013e, except this time for western 697 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 698 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 699 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 700 Atlantic/St_Helena. This also affects the backwards-compatibility 701 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 702 Tim Parenti, and David Patte for reporting problems in earlier 703 versions of this change.) 704 705 Asia/Shanghai's pre-standard-time UT offset has been changed from 706 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 707 transition to standard time has been changed from 1928 to 1901. 708 709 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 710 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 711 In 1946 it observed DST from 05-15 through 09-30; in 1947 712 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 713 (Thanks to Yu-Cheng Chuang.) 714 715 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 716 717 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 718 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 719 720 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 721 from 1911 to 1950. 722 723 Pacific/Chatham has been changed to New Zealand standard time plus 724 45 minutes for the period before 1957, reflecting a 1956 remark in 725 the New Zealand parliament. 726 727 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 728 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 729 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 730 not 04-06 at 02:00; and there was no DST in 1920. 731 732 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 733 734 Time in Russia before 1927 or so has been corrected by a few seconds in 735 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 736 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 737 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 738 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 739 740 Changes affecting data format 741 742 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 743 The new file's extended format allows multiple country codes per zone. 744 The older file is still installed but is deprecated; its format is 745 not changing and it will still be distributed for a while, but new 746 applications should use the new file. 747 748 The new file format simplifies maintenance of obscure locations. 749 To test this, it adds coverage for the Crozet Islands and the 750 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 751 752 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 753 It is still ASCII now, but commentary about the switch has been added. 754 The new file 'zone1970.tab' already uses UTF-8. 755 756 Changes affecting code 757 758 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 759 is defined. (Thanks to Elliott Hughes for reporting the problem.) 760 761 'zic' no longer mishandles input when ignoring case in locales that 762 are not compatible with English, e.g., unibyte Turkish locales when 763 compiled with HAVE_GETTEXT. 764 765 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 766 they no longer use ASCII '-' as if it were a dash. 767 768 'zic' now rejects output file names that contain '.' or '..' components. 769 (Thanks to Tim Parenti for reporting the problem.) 770 771 'zic -v' now warns about output file names that do not follow 772 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 773 David Olson for starting the ball rolling on this.) 774 775 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 776 777 Changes affecting build procedure 778 779 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 780 (Thanks to John Cochran.) 781 782 Changes affecting documentation and commentary 783 784 The 'Theory' file documents legacy names, the longstanding 785 exceptions to the POSIX-inspired file name rules. 786 787 The 'zic' documentation clarifies the role of time types when 788 interpreting dates. (Thanks to Arthur David Olson.) 789 790 Documentation and commentary now prefer UTF-8 to US-ASCII, 791 allowing the use of proper accents in foreign words and names. 792 Code and data have not changed because of this. (Thanks to 793 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 794 this.) 795 796 Non-HTML documentation and commentary now use plain-text URLs instead of 797 HTML insertions, and are more consistent about bracketing URLs when they 798 are not already surrounded by white space. (Thanks to suggestions by 799 Steffen Nurpmeso.) 800 801 There is new commentary about Xujiahui Observatory, the five time-zone 802 project in China from 1918 to 1949, timekeeping in Japanese-occupied 803 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 804 warlord Jin Shuren in the data. 805 806 Commentary about the coverage of each Russian zone has been standardized. 807 (Thanks to Tim Parenti). 808 809 There is new commentary about contemporary timekeeping in Ethiopia. 810 811 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 812 813 There is new commentary about time in Poland in 1919. 814 815 Proper credit has been given to DST inventor George Vernon Hudson. 816 817 Commentary about time in Metlakatla, AK and Resolute, NU has been 818 improved, with a new source for the former. 819 820 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 821 is uninhabited. 822 823 Commentary about permanent Antarctic bases has been updated. 824 825 Several typos have been corrected. (Thanks to Tim Parenti for 826 contributing some of these fixes.) 827 828 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 829 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 830 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 831 (Thanks to a heads-up from Dirkjan Ochtman.) 832 833 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 834 have been removed. These obsolescent US Naval Observatory entries were no 835 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 836 837 838 Release 2014e - 2014-06-12 21:53:52 -0700 839 840 Changes affecting near-future time stamps 841 842 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 843 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 844 switch to standard time at 24:00 the last Thursday before Ramadan, and 845 back to DST at 00:00 the first Friday after Ramadan. 846 847 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 848 to Milamber Space Network.) Guess that from 2015 on Morocco will 849 temporarily switch to standard time at 03:00 the last Saturday before 850 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 851 852 Changes affecting past time stamps 853 854 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 855 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 856 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 857 in 1991. (Thanks to Hank W. for reporting the problems.) 858 859 Changes affecting commentary 860 861 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 862 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 863 removes stale pointers to World Time Explorer and WORLDTIME. 864 865 866 Release 2014d - 2014-05-27 21:34:40 -0700 867 868 Changes affecting code 869 870 zic no longer generates files containing time stamps before the Big Bang. 871 This works around GNOME bug 730332 872 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 873 (Thanks to Leonardo Chiquitto for reporting the bug, and to 874 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 875 876 Changes affecting documentation 877 878 tz-link.htm now mentions GNOME. 879 880 881 Release 2014c - 2014-05-13 07:44:13 -0700 882 883 Changes affecting near-future time stamps 884 885 Egypt observes DST starting 2014-05-15 at 24:00. 886 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 887 Details have not been announced, except that DST will not be observed 888 during Ramadan. Guess that DST will stop during the same Ramadan dates as 889 Morocco, and that Egypt's future spring and fall transitions will be the 890 same as 2010 when it last observed DST, namely April's last Friday at 891 00:00 to September's last Thursday at 23:00 standard time. Also, guess 892 that Ramadan transitions will be at 00:00 standard time. 893 894 Changes affecting code 895 896 zic now generates transitions for minimum time values, eliminating guesswork 897 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 898 899 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 900 901 Changes affecting commentary and documentation 902 903 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 904 905 906 Release 2014b - 2014-03-24 21:28:50 -0700 907 908 Changes affecting near-future time stamps 909 910 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 911 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 912 913 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 914 Bengt-Inge Larsson.) This is currently an approximation; a better version 915 will require the zic and localtime fixes mentioned below, and the plan is 916 to wait for a while until at least the zic fixes propagate. 917 918 Changes affecting code 919 920 'zic' and 'localtime' no longer reject locations needing four transitions 921 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 922 Also, 'zic' avoids some unlikely failures due to integer overflow. 923 924 Changes affecting build procedure 925 926 'make check' now detects Rule lines defined but never used. 927 The NZAQ rules, an instance of this problem, have been removed. 928 929 Changes affecting commentary and documentation 930 931 Fix Tuesday/Thursday typo in description of time in Israel. 932 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 933 934 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 935 to Donald MacQueen.) Instead, the Microsoft Windows Store app 936 library supports them. 937 938 Add comments about Johnston Island time in the 1960s. 939 (Thanks to Lyle McElhaney.) 940 941 Morocco's 2014 DST start will be as predicted. 942 (Thanks to Sebastien Willemijns.) 943 944 945 Release 2014a - 2014-03-07 23:30:29 -0800 946 947 Changes affecting near-future time stamps 948 949 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 950 the heads-up, and to Tim Parenti for simplifying the update.) 951 952 Changes affecting past time stamps 953 954 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 955 (Thanks to Steffen Thorsen.) 956 957 Ukraine switched from Moscow to Eastern European time on 1990-07-01 958 (not 1992-01-01), and observed DST during the entire next winter. 959 (Thanks to Vladimir in Moscow via Alois Treindl.) 960 961 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 962 (Thanks to Avigdor Finkelstein.) 963 964 Changes affecting code 965 966 A uninitialized-storage bug in 'localtime' has been fixed. 967 (Thanks to Logan Chien.) 968 969 Changes affecting the build procedure 970 971 The settings for 'make check_web' now default to Ubuntu 13.10. 972 973 Changes affecting commentary and documentation 974 975 The boundary of the US Pacific time zone is given more accurately. 976 (Thanks to Alan Mintz.) 977 978 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 979 980 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 981 982 Better descriptions of countries with same time zone history as 983 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 984 985 Several changes affect tz-link.htm, the main web page. 986 987 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 988 David Braverman). 989 990 Mention xCal (Internet RFC 6321) and jCal. 991 992 Microsoft has some support for tz database names. 993 994 CLDR data formats include both XML and JSON. 995 996 Mention Maggiolo's map of solar vs standard time. 997 (Thanks to Arthur David Olson.) 998 999 Mention TZ4Net. (Thanks to Matt Johnson.) 1000 1001 Mention the timezone-olson Haskell package. 1002 1003 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 1004 1005 Remove moribund links to daylight-savings-time.info and to 1006 Simple Timer + Clocks. 1007 1008 Update two links. (Thanks to Oscar van Vlijmen.) 1009 1010 Fix some formatting glitches, e.g., remove random newlines from 1011 abbr elements' title attributes. 1012 1013 1014 Release 2013i - 2013-12-17 07:25:23 -0800 1015 1016 Changes affecting near-future time stamps: 1017 1018 Jordan switches back to standard time at 00:00 on December 20, 2013. 1019 The 2006-2011 transition schedule is planned to resume in 2014. 1020 (Thanks to Steffen Thorsen.) 1021 1022 Changes affecting past time stamps: 1023 1024 In 2004, Cuba began DST on March 28, not April 4. 1025 (Thanks to Steffen Thorsen.) 1026 1027 Changes affecting code 1028 1029 The compile-time flag NOSOLAR has been removed, as nowadays the 1030 benefit of slightly shrinking runtime table size is outweighed by the 1031 cost of disallowing potential future updates that exceed old limits. 1032 1033 Changes affecting documentation and commentary 1034 1035 The files solar87, solar88, and solar89 are no longer distributed. 1036 They were a negative experiment - that is, a demonstration that 1037 tz data can represent solar time only with some difficulty and error. 1038 Their presence in the distribution caused confusion, as Riyadh 1039 civil time was generally not solar time in those years. 1040 1041 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 1042 1043 1044 Release 2013h - 2013-10-25 15:32:32 -0700 1045 1046 Changes affecting current and future time stamps: 1047 1048 Libya has switched its time zone back to UTC+2 without DST, 1049 instead of UTC+1 with DST. (Thanks to Even Scharning.) 1050 1051 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 1052 (Thanks to Gwillim Law.) 1053 1054 Changes affecting future time stamps: 1055 1056 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 1057 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 1058 (Thanks to Steffen Thorsen.) 1059 1060 Add entries for DST transitions in Morocco in the year 2038. 1061 This avoids some year-2038 glitches introduced in 2013g. 1062 (Thanks to Yoshito Umaoka for reporting the problem.) 1063 1064 Changes affecting API 1065 1066 The 'tzselect' command no longer requires the 'select' command, 1067 and should now work with /bin/sh on more platforms. It also works 1068 around a bug in BusyBox awk before version 1.21.0. (Thanks to 1069 Patrick 'P. J.' McDermott and Alan Barrett.) 1070 1071 Changes affecting code 1072 1073 Fix localtime overflow bugs with 32-bit unsigned time_t. 1074 1075 zdump no longer assumes sscanf returns maximal values on overflow. 1076 1077 Changes affecting the build procedure 1078 1079 The builder can specify which programs to use, if any, instead of 1080 'ar' and 'ranlib', and libtz.a is now built locally before being 1081 installed. (Thanks to Michael Forney.) 1082 1083 A dependency typo in the 'zdump' rule has been fixed. 1084 (Thanks to Andrew Paprocki.) 1085 1086 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 1087 work as specified by POSIX.2-1992 or later; this is portable nowadays. 1088 1089 'make clean' no longer removes 'leapseconds', since it's 1090 host-independent and is part of the distribution. 1091 1092 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 1093 1094 Changes affecting documentation and commentary 1095 1096 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 1097 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 1098 1099 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 1100 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 1101 longer maintained) and for old advisories. SOFA now does C. 1102 1103 Release 2013g - 2013-09-30 21:08:26 -0700 1104 1105 Changes affecting current and near-future time stamps 1106 1107 Morocco now observes DST from the last Sunday in March to the last 1108 Sunday in October, not April to September respectively. (Thanks 1109 to Steffen Thorsen.) 1110 1111 Changes affecting 'zic' 1112 1113 'zic' now runs on platforms that lack both hard links and symlinks. 1114 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 1115 Also, fix some bugs on platforms that lack hard links but have symlinks. 1116 1117 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 1118 to predict the far future, fixing a bug introduced in 2013e. 1119 1120 Changes affecting the build procedure 1121 1122 The 'leapseconds' file is again put into the tzdata tarball. 1123 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 1124 Matt Burgess and Ian Abbott.) The timestamps of these and other 1125 dependent files in tarballs are adjusted more consistently. 1126 1127 Changes affecting documentation and commentary 1128 1129 The README file is now part of the data tarball as well as the code. 1130 It now states that files are public domain unless otherwise specified. 1131 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 1132 Its details about the 1989 release moved to a place of honor near 1133 the end of NEWS. 1134 1135 1136 Release 2013f - 2013-09-24 23:37:36 -0700 1137 1138 Changes affecting near-future time stamps 1139 1140 Tocantins will very likely not observe DST starting this spring. 1141 (Thanks to Steffen Thorsen.) 1142 1143 Jordan will likely stay at UTC+3 indefinitely, and will not fall 1144 back this fall. 1145 1146 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 1147 1148 Changes affecting API 1149 1150 The types of the global variables 'timezone' and 'altzone' (if present) 1151 have been changed back to 'long'. This is required for 'timezone' 1152 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 1153 These variables were originally 'long' in the tz code, but were 1154 mistakenly changed to 'time_t' in 1987; nobody reported the 1155 incompatibility until now. The difference matters on x32, where 1156 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 1157 1158 Changes affecting the build procedure 1159 1160 Avoid long strings in leapseconds.awk to work around a mawk bug. 1161 (Thanks to Cyril Baurand.) 1162 1163 Changes affecting documentation and commentary 1164 1165 New file 'NEWS' that contains release notes like this one. 1166 1167 Paraguay's law does not specify DST transition time; 00:00 is customary. 1168 (Thanks to Waldemar Villamayor-Venialbo.) 1169 1170 Minor capitalization fixes. 1171 1172 Changes affecting version-control only 1173 1174 The experimental GitHub repository now contains annotated and 1175 signed tags for recent releases, e.g., '2013e' for Release 2013e. 1176 Releases are tagged starting with 2012e; earlier releases were 1177 done differently, and tags would either not have a simple name or 1178 not exactly match what was released. 1179 1180 'make set-timestamps' is now simpler and a bit more portable. 1181 1182 1183 Release 2013e - 2013-09-19 23:50:04 -0700 1184 1185 Changes affecting near-future time stamps 1186 1187 This year Fiji will start DST on October 27, not October 20. 1188 (Thanks to David Wheeler for the heads-up.) For now, guess that 1189 Fiji will continue to spring forward the Sunday before the fourth 1190 Monday in October. 1191 1192 Changes affecting current and future time zone abbreviations 1193 1194 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 1195 time zone abbreviations since 1932. (Thanks to George Ziegler, 1196 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 1197 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 1198 Asia/Makassar, and Asia/Pontianak. 1199 1200 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 1201 daylight saving time) for San Luis, Argentina since 2009. 1202 1203 Changes affecting Godthb time stamps after 2037 if version mismatch 1204 1205 Allow POSIX-like TZ strings where the transition time's hour can 1206 range from -167 through 167, instead of the POSIX-required 0 1207 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 1208 new Fiji rules. This is a more-compact way to represent 1209 far-future time stamps for America/Godthab, America/Santiago, 1210 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1211 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1212 this change. (Derived from a suggestion by Arthur David Olson.) 1213 1214 Allow POSIX-like TZ strings where daylight saving time is in 1215 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1216 Argentina Summer Time all year. This supports a more-compact way 1217 to represent the 2013d data for America/Argentina/San_Luis. 1218 Because of the change for San Luis noted above this change does not 1219 affect the current data. (Thanks to Andrew Main (Zefram) for 1220 suggestions that improved this change.) 1221 1222 Where these two TZ changes take effect, there is a minor extension 1223 to the tz file format in that it allows new values for the 1224 embedded TZ-format string, and the tz file format version number 1225 has therefore been increased from 2 to 3 as a precaution. 1226 Version-2-based client code should continue to work as before for 1227 all time stamps before 2038. Existing version-2-based client code 1228 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1229 files, and typically works in practice even for time stamps after 1230 2037; the only known exception is America/Godthab. 1231 1232 Changes affecting time stamps before 1970 1233 1234 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1235 some errors before 1947. 1236 1237 Some zones have been turned into links, when they differ from existing 1238 zones only in older data entries that were likely invented or that 1239 differ only in LMT or transitions from LMT. These changes affect 1240 only time stamps before 1943. The affected zones are: 1241 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1242 America/Grenada, America/Guadeloupe, America/Marigot, 1243 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1244 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1245 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1246 confirming that the old Europe/Vaduz zone was wrong and the new 1247 link is better for WWII-era times.) 1248 1249 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1250 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 1251 from 1890 to 1912. 1252 1253 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1254 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 1255 to Alois Treindl). 1256 1257 Change the date of the circa-1850 Zurich transition from 1849-09-12 1258 to 1853-07-16, overriding Shanks with data from Messerli about 1259 postal and telegraph time in Switzerland. 1260 1261 Changes affecting time zone abbreviations before 1970 1262 1263 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1264 as Jakarta was called Batavia back then. 1265 1266 Changes affecting API 1267 1268 The 'zic' command now outputs a dummy transition when far-future 1269 data can't be summarized using a TZ string, and uses a 402-year 1270 window rather than a 400-year window. For the current data, this 1271 affects only the Asia/Tehran file. It does not affect any of the 1272 time stamps that this file represents, so zdump outputs the same 1273 information as before. (Thanks to Andrew Main (Zefram).) 1274 1275 The 'date' command has a new '-r' option, which lets you specify 1276 the integer time to display, a la FreeBSD. 1277 1278 The 'tzselect' command has two new options '-c' and '-n', which lets you 1279 select a zone based on latitude and longitude. 1280 1281 The 'zic' command's '-v' option now warns about constructs that 1282 require the new version-3 binary file format. (Thanks to Arthur 1283 David Olson for the suggestion.) 1284 1285 Support for floating-point time_t has been removed. 1286 It was always dicey, and POSIX no longer requires it. 1287 (Thanks to Eric Blake for suggesting to the POSIX committee to 1288 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1289 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1290 bugs and elucidating some of the corners of the old floating-point 1291 implementation.) 1292 1293 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1294 changed back to the old practice of using 'long' to represent UT 1295 offsets. This had been inadvertently and mistakenly changed to 1296 'int_fast32_t'. (Thanks to Christos Zoulas.) 1297 1298 The code avoids undefined behavior on integer overflow in some 1299 more places, including gmtime, localtime, mktime and zdump. 1300 1301 Changes affecting the zdump utility 1302 1303 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1304 "UTC" does not make sense for time stamps that predate the introduction 1305 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1306 for clarifying UT vs UTC.) 1307 1308 Data changes affecting behavior of tzselect and similar programs 1309 1310 Country code BQ is now called the more-common name "Caribbean Netherlands" 1311 rather than the more-official "Bonaire, St Eustatius & Saba". 1312 1313 Remove from zone.tab the names America/Montreal, America/Shiprock, 1314 and Antarctica/South_Pole, as they are equivalent to existing 1315 same-country-code zones for post-1970 time stamps. The data entries for 1316 these names are unchanged, so the names continue to work as before. 1317 1318 Changes affecting code internals 1319 1320 zic -c now runs way faster on 64-bit hosts when given large numbers. 1321 1322 zic now uses vfprintf to avoid allocating and freeing some memory. 1323 1324 tzselect now computes the list of continents from the data, 1325 rather than have it hard-coded. 1326 1327 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1328 1329 Changes affecting the build procedure 1330 1331 The 'leapseconds' file is now generated automatically from a 1332 new file 'leap-seconds.list', which is a copy of 1333 <ftp://time.nist.gov/pub/leap-seconds.list>. 1334 A new source file 'leapseconds.awk' implements this. 1335 The goal is simplification of the future maintenance of 'leapseconds'. 1336 1337 When building the 'posix' or 'right' subdirectories, if the 1338 subdirectory would be a copy of the default subdirectory, it is 1339 now made a symbolic link if that is supported. This saves about 1340 2 MB of file system space. 1341 1342 The links America/Shiprock and Antarctica/South_Pole have been 1343 moved to the 'backward' file. This affects only nondefault builds 1344 that omit 'backward'. 1345 1346 Changes affecting version-control only 1347 1348 .gitignore now ignores 'date'. 1349 1350 Changes affecting documentation and commentary 1351 1352 Changes to the 'tzfile' man page 1353 1354 It now mentions that the binary file format may be extended in 1355 future versions by appending data. 1356 1357 It now refers to the 'zdump' and 'zic' man pages. 1358 1359 Changes to the 'zic' man page 1360 1361 It lists conditions that elicit a warning with '-v'. 1362 1363 It says that the behavior is unspecified when duplicate names 1364 are given, or if the source of one link is the target of another. 1365 1366 Its examples are updated to match the latest data. 1367 1368 The definition of white space has been clarified slightly. 1369 (Thanks to Michael Deckers.) 1370 1371 Changes to the 'Theory' file 1372 1373 There is a new section about the accuracy of the tz database, 1374 describing the many ways that errors can creep in, and 1375 explaining why so many of the pre-1970 time stamps are wrong or 1376 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1377 Wollman for discussions that contributed to this). 1378 1379 The 'Theory' file describes LMT better (this follows a 1380 suggestion by Guy Harris). 1381 1382 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1383 1384 It's mentioned that excluding 'backward' should not affect the 1385 other data, and it suggests at least one zone.tab name per 1386 inhabited country (thanks to Stephen Colebourne). 1387 1388 Some longstanding restrictions on names are documented, e.g., 1389 'America/New_York' precludes 'America/New_York/Bronx'. 1390 1391 It gives more reasons for the 1970 cutoff. 1392 1393 It now mentions which time_t variants are supported, such as 1394 signed integer time_t. (Thanks to Paul Goyette for reporting 1395 typos in an experimental version of this change.) 1396 1397 (Thanks to Philip Newton for correcting typos in these changes.) 1398 1399 Documentation and commentary is more careful to distinguish UT in 1400 general from UTC in particular. (Thanks to Steve Allen.) 1401 1402 Add a better source for the Zurich 1894 transition. 1403 (Thanks to Pierre-Yves Berger.) 1404 1405 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1406 1407 1408 Release 2013d - 2013-07-05 07:38:01 -0700 1409 1410 Changes affecting future time stamps: 1411 1412 Morocco's midsummer transitions this year are July 7 and August 10, 1413 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1414 1415 Israel now falls back on the last Sunday of October. 1416 (Thanks to Ephraim Silverberg.) 1417 1418 Changes affecting past time stamps: 1419 1420 Specify Jerusalem's location more precisely; this changes the pre-1880 1421 times by 2 s. 1422 1423 Changing affecting metadata only: 1424 1425 Fix typos in the entries for country codes BQ and SX. 1426 1427 Changes affecting code: 1428 1429 Rework the code to fix a bug with handling Australia/Macquarie on 1430 32-bit hosts (thanks to Arthur David Olson). 1431 1432 Port to platforms like NetBSD, where time_t can be wider than long. 1433 1434 Add support for testing time_t types other than the system's. 1435 Run 'make check_time_t_alternatives' to try this out. 1436 Currently, the tests fail for unsigned time_t; 1437 this should get fixed at some point. 1438 1439 Changes affecting documentation and commentary: 1440 1441 Deemphasize the significance of national borders. 1442 1443 Update the zdump man page. 1444 1445 Remove obsolete NOID comment (thanks to Denis Excoffier). 1446 1447 Update several URLs and comments in the web pages. 1448 1449 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1450 1451 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1452 1453 1454 Release 2013c - 2013-04-19 16:17:40 -0700 1455 1456 Changes affecting current and future time stamps: 1457 1458 Palestine observed DST starting March 29, 2013. (Thanks to 1459 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1460 with the predicted rules being the last Thursday in March at 24:00 1461 to the first Friday on or after September 21 at 01:00. 1462 1463 Assume that the recent change to Paraguay's DST rules is permanent, 1464 by moving the end of DST to the 4th Sunday in March every year. 1465 (Thanks to Carlos Ral Perasso.) 1466 1467 Changes affecting past time stamps: 1468 1469 Fix some historical data for Palestine to agree with that of 1470 timeanddate.com, as follows: 1471 1472 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1473 00:00 Apr 1. 1474 1475 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1476 02:00. 1477 1478 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1479 1480 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1481 1482 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1483 1484 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1485 1486 Fix times of habitation for Macquarie to agree with the Tasmania 1487 Parks & Wildlife Service history, which indicates that permanent 1488 habitation was 1899-1919 and 1948 on. 1489 1490 Changing affecting metadata only: 1491 1492 Macquarie Island is politically part of Australia, not Antarctica. 1493 (Thanks to Tobias Conradi.) 1494 1495 Sort Macquarie more-consistently with other parts of Australia. 1496 (Thanks to Tim Parenti.) 1497 1498 1499 Release 2013b - 2013-03-10 22:33:40 -0700 1500 1501 Changes affecting current and future time stamps: 1502 1503 Haiti uses US daylight-saving rules this year, and presumably future years. 1504 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1505 1506 Paraguay will end DST on March 24 this year. 1507 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1508 1509 Morocco does not observe DST during Ramadan; 1510 try to predict Ramadan in Morocco as best we can. 1511 (Thanks to Erik Homoet for the heads-up.) 1512 1513 Changes affecting commentary: 1514 1515 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1516 Update URL for Solaris. Mention Internet RFC 6557. 1517 Update Internet RFCs 2445->5545, 2822->5322. 1518 Switch from FTP to HTTP for Internet RFCs. 1519 1520 1521 Release 2013a - 2013-02-27 09:20:35 -0800 1522 1523 Change affecting binary data format: 1524 1525 The zone offset at the end of version-2-format zone files is now 1526 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1527 1528 Changes affecting current and future time stamps: 1529 1530 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1531 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1532 (Thanks to Steffen Thorsen and Robert Elz.) 1533 1534 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1535 (Thanks to Tobias Conradi and Arthur David Olson.) 1536 1537 Many changes affect historical time stamps before 1940. 1538 These were deduced from: Milne J. Civil time. Geogr J. 1899 1539 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1540 1541 Changes affecting the code: 1542 1543 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1544 the data). (Thanks to Arthur David Olson.) 1545 1546 Fix localtime bug when time_t is unsigned and data files were generated 1547 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1548 to Arthur David Olson for fixing.) 1549 1550 Allow the email address for bug reports to be set by the packager. 1551 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 1552 1553 Update HTML checking to be compatible with Ubuntu 12.10. 1554 1555 Check that files are a safe subset of ASCII. At some point we may 1556 relax this requirement to a safe subset of UTF-8. Without the 1557 check, some non-UTF-8 encodings were leaking into the distribution. 1558 1559 Commentary changes: 1560 1561 Restore a comment about copyright notices that was inadvertently deleted. 1562 (Thanks to Arthur David Olson.) 1563 1564 Improve the commentary about which districts observe what times 1565 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1566 1567 Add web page links to tz.js. 1568 1569 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1570 1571 1572 Release 2012j - 2012-11-12 18:34:49 -0800 1573 1574 Libya moved to CET this weekend, but with DST planned next year. 1575 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1576 1577 Signatures now have the extension .asc, not .sign, as that's more 1578 standard. (Thanks to Phil Pennock.) 1579 1580 The output of 'zdump --version', and of 'zic --version', now 1581 uses a format that is more typical for --version. 1582 (Thanks to Joseph S. Myers.) 1583 1584 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1585 now uses tz (a] iana.org rather than the old elsie address. 1586 1587 zic -v now complains about abbreviations that are less than 3 1588 or more than 6 characters, as per Posix. Formerly, it checked 1589 for abbreviations that were more than 3. 1590 1591 'make public' no longer puts its temporary directory under /tmp, 1592 and uses the just-built zic rather than the system zic. 1593 1594 Various fixes to documentation and commentary. 1595 1596 1597 Release 2012i - 2012-11-03 12:57:09 -0700 1598 1599 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1600 1601 Linker flags can now be specified via LDFLAGS. 1602 AWK now defaults to 'awk', not 'nawk'. 1603 The shell in tzselect now defaults to /bin/bash, but this can 1604 be overridden by specifying KSHELL. 1605 The main web page now mentions the unofficial GitHub repository. 1606 (Thanks to Mike Frysinger.) 1607 1608 Tarball signatures can now be built by running 'make signatures'. 1609 There are also new makefile rules 'tarballs', 'check_public', and 1610 separate makefile rules for each tarball and signature file. 1611 A few makefile rules are now more portable to strict POSIX. 1612 1613 The main web page now lists the canonical IANA URL. 1614 1615 1616 Release 2012h - 2012-10-26 22:49:10 -0700 1617 1618 Bahia no longer has DST. (Thanks to Kelley Cook.) 1619 1620 Tocantins has DST. (Thanks to Rodrigo Severo.) 1621 1622 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1623 1624 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1625 1626 Web page updates. 1627 1628 More C modernization, except that at Arthur David Olson's suggestion 1629 the instances of 'register' were kept. 1630 1631 1632 Release 2012g - 2012-10-17 20:59:45 -0700 1633 1634 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1635 1636 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1637 1638 Assume C89. 1639 1640 To attack the version-number problem, this release ships the file 1641 'Makefile' (which contains the release number) in both the tzcode and 1642 the tzdata tarballs. The two Makefiles are identical, and should be 1643 identical in any matching pair of tarballs, so it shouldn't matter 1644 which order you extract the tarballs. Perhaps we can come up with a 1645 better version-number scheme at some point; this scheme does have the 1646 virtue of not adding more files. 1647 1648 1649 Release 2012f - 2012-09-12 23:17:03 -0700 1650 1651 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1652 20 this year. (Thanks to Steffen Thorsen.) 1653 1654 1655 Release 2012e - 2012-08-02 20:44:55 -0700 1656 1657 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1658 (Thanks to Steffen Thorsen.) 1659 1660 * Use a single version number for both code and data. 1661 1662 * .gitignore: New file. 1663 1664 * Remove trailing white space. 1665 1666 1667 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1668 1669 Changes for Morocco's time stamps, which take effect in a couple of 1670 hours, along with infrastructure changes to accommodate how the tz 1671 code and data are released on IANA. 1672 1673 1674 Release data2012c - 2012-03-27 12:17:25 -0400 1675 1676 africa 1677 Summer time changes for Morocco (to start late April 2012) 1678 1679 asia 1680 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1681 1682 northamerica 1683 Haiti following US/Canada rules for 2012 (and we're assuming, 1684 for now anyway, for the future). 1685 1686 1687 Release 2012b - 2012-03-02 12:29:15 +0700 1688 1689 There is just one change to tzcode2012b (compared with 2012a): 1690 the Makefile that was accidentally included with 2012a has been 1691 replaced with the version that should have been there, which is 1692 identical with the previous version (from tzcode2011i). 1693 1694 There are just two changes in tzdata2012b compared with 2012a. 1695 1696 Most significantly, summer time in Cuba has been delayed 3 weeks 1697 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1698 date, as listed in 2012a) is just a little over a week away, this 1699 change is urgent. 1700 1701 Less importantly, an excess tab in one of the changes in zone.tab 1702 in 2012a has been removed. 1703 1704 1705 Release 2012a - 2012-03-01 18:28:10 +0700 1706 1707 The changes in tzcode2012a (compared to the previous version, 2011i) 1708 are entirely to the README and tz-art.htm and tz-link.htm files, if 1709 none of those concern you, you can ignore the code update. The changes 1710 reflect the changed addresses for the mailing list and the code and 1711 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1712 has been added to tz-link.htm). 1713 1714 In tzdata2012a (compared to the previous release, which was 2011n) 1715 the major changes are: 1716 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1717 Falkland Islands onto permanent summer time (we're assuming for the 1718 foreseeable future, though 2012 is all we're fairly certain of.) 1719 Armenia has abolished Summer Time. 1720 Tokelau jumped the International Date Line back last December 1721 (just the same as their near neighbour, Samoa). 1722 America/Creston is a new zone for a small area of British Columbia 1723 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1724 1725 Other minor changes are: 1726 Corrections to 1918 Canadian summer time end dates. 1727 Updated URL for UK time zone history (in comments) 1728 A few typos in Le Corre's list of free French place names (comments) 1729 1730 1731 Release data2011n - 2011-10-30 14:57:54 +0700 1732 1733 There are three changes of note - most urgently, Cuba (America/Havana) 1734 has extended summer time by two weeks, now to end on Nov 13, rather than 1735 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1736 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1737 all, and consequently that zone has been removed (again) and reinstated 1738 in the "backward" file as a link to Europe/Chisinau. And third, the 1739 end date for Fiji's summer time this summer was moved forward from the 1740 earlier planned Feb 26, to Jan 22. 1741 1742 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1743 (and the incorrect syntax that was in the 2011m version of that file 1744 is so fixed - it would have been fixed in a different way had this 1745 change not happened - that's the "missing" sccs version id). 1746 1747 1748 Release data2011m - 2011-10-24 21:42:16 +0700 1749 1750 In particular, the typos in comments in the data (2011-11-17 should have 1751 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1752 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1753 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 1754 Tim Parenti, and also Denys Gavrysh) 1755 1756 In addition, I added Europe/Tiraspol to zone.tab. 1757 1758 This time, all the files have new version numbers... (including the files 1759 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 1760 version numbers there...) 1761 1762 1763 Release data2011l - 2011-10-10 11:15:43 +0700 1764 1765 There are just 2 changes that cause different generated tzdata files from 1766 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 1767 is included, but commented out. Compared with the diff I sent out last week, 1768 this version also includes attributions for the sources for the changes 1769 (in much the same format as ado used, but the html tags have not been 1770 checked, verified, or used in any way at all, so if there are errors there, 1771 please let me know.) 1772 1773 1774 Release data2011k - 2011-09-20 17:54:03 -0400 1775 1776 [not summarized] 1777 1778 1779 Release data2011j - 2011-09-12 09:22:49 -0400 1780 1781 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 1782 Tanzania); there are also two spelling corrections to comments in 1783 the australasia file (with thanks to Christos Zoulas). 1784 1785 1786 Release 2011i - 2011-08-29 05:56:32 -0400 1787 1788 [not summarized] 1789 1790 1791 Release data2011h - 2011-06-15 18:41:48 -0400 1792 1793 Russia and Curaao changes 1794 1795 1796 Release 2011g - 2011-04-25 09:07:22 -0400 1797 1798 update the rules for Egypt to reflect its abandonment of DST this year 1799 1800 1801 Release 2011f - 2011-04-06 17:14:53 -0400 1802 1803 [not summarized] 1804 1805 1806 Release 2011e - 2011-03-31 16:04:38 -0400 1807 1808 Morocco, Chile, and tz-link changes 1809 1810 1811 Release 2011d - 2011-03-14 09:18:01 -0400 1812 1813 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 1814 1815 1816 Release 2011c - 2011-03-07 09:30:09 -0500 1817 1818 These do affect current time stamps in Chile and Annette Island, Canada. 1819 1820 1821 Release 2011b - 2011-02-07 08:44:50 -0500 1822 1823 [not summarized] 1824 1825 1826 Release 2011a - 2011-01-24 10:30:16 -0500 1827 1828 [not summarized] 1829 1830 1831 Release data2010o - 2010-11-01 09:18:23 -0400 1832 1833 change to the end of DST in Fiji in 2011 1834 1835 1836 Release 2010n - 2010-10-25 08:19:17 -0400 1837 1838 [not summarized] 1839 1840 1841 Release 2010m - 2010-09-27 09:24:48 -0400 1842 1843 Hong Kong, Vostok, and zic.c changes 1844 1845 1846 Release 2010l - 2010-08-16 06:57:25 -0400 1847 1848 [not summarized] 1849 1850 1851 Release 2010k - 2010-07-26 10:42:27 -0400 1852 1853 [not summarized] 1854 1855 1856 Release 2010j - 2010-05-10 09:07:48 -0400 1857 1858 changes for Baha de Banderas and for version naming 1859 1860 1861 Release data2010i - 2010-04-16 18:50:45 -0400 1862 1863 the end of DST in Morocco on 2010-08-08 1864 1865 1866 Release data2010h - 2010-04-05 09:58:56 -0400 1867 1868 [not summarized] 1869 1870 1871 Release data2010g - 2010-03-24 11:14:53 -0400 1872 1873 [not summarized] 1874 1875 1876 Release 2010f - 2010-03-22 09:45:46 -0400 1877 1878 [not summarized] 1879 1880 1881 Release data2010e - 2010-03-08 14:24:27 -0500 1882 1883 corrects the Dhaka bug found by Danvin Ruangchan 1884 1885 1886 Release data2010d - 2010-03-06 07:26:01 -0500 1887 1888 [not summarized] 1889 1890 1891 Release 2010c - 2010-03-01 09:20:58 -0500 1892 1893 changes including KRE's suggestion for earlier initialization of 1894 "goahead" and "goback" structure elements 1895 1896 1897 Release code2010a - 2010-02-16 10:40:04 -0500 1898 1899 [not summarized] 1900 1901 1902 Release data2010b - 2010-01-20 12:37:01 -0500 1903 1904 Mexico changes 1905 1906 1907 Release data2010a - 2010-01-18 08:30:04 -0500 1908 1909 changes to Dhaka 1910 1911 1912 Release data2009u - 2009-12-26 08:32:28 -0500 1913 1914 changes to DST in Bangladesh 1915 1916 1917 Release 2009t - 2009-12-21 13:24:27 -0500 1918 1919 [not summarized] 1920 1921 1922 Release data2009s - 2009-11-14 10:26:32 -0500 1923 1924 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 1925 1926 1927 Release 2009r - 2009-11-09 10:10:31 -0500 1928 1929 "antarctica" and "tz-link.htm" changes 1930 1931 1932 Release 2009q - 2009-11-02 09:12:40 -0500 1933 1934 with two corrections as reported by Eric Muller and Philip Newton 1935 1936 1937 Release data2009p - 2009-10-23 15:05:27 -0400 1938 1939 Argentina (including San Luis) changes (with the correction from 1940 Mariano Absatz) 1941 1942 1943 Release data2009o - 2009-10-14 16:49:38 -0400 1944 1945 Samoa (commentary only), Pakistan, and Bangladesh changes 1946 1947 1948 Release data2009n - 2009-09-22 15:13:38 -0400 1949 1950 added commentary for Argentina and a change to the end of DST in 1951 2009 in Pakistan 1952 1953 1954 Release data2009m - 2009-09-03 10:23:43 -0400 1955 1956 Samoa and Palestine changes 1957 1958 1959 Release data2009l - 2009-08-14 09:13:07 -0400 1960 1961 Samoa (comments only) and Egypt 1962 1963 1964 Release 2009k - 2009-07-20 09:46:08 -0400 1965 1966 [not summarized] 1967 1968 1969 Release data2009j - 2009-06-15 06:43:59 -0400 1970 1971 Bangladesh change (with a short turnaround since the DST change is 1972 impending) 1973 1974 1975 Release 2009i - 2009-06-08 09:21:22 -0400 1976 1977 updating for DST in Bangladesh this year 1978 1979 1980 Release 2009h - 2009-05-26 09:19:14 -0400 1981 1982 [not summarized] 1983 1984 1985 Release data2009g - 2009-04-20 16:34:07 -0400 1986 1987 Cairo 1988 1989 1990 Release data2009f - 2009-04-10 11:00:52 -0400 1991 1992 correct DST in Pakistan 1993 1994 1995 Release 2009e - 2009-04-06 09:08:11 -0400 1996 1997 [not summarized] 1998 1999 2000 Release 2009d - 2009-03-23 09:38:12 -0400 2001 2002 Morocco, Tunisia, Argentina, and American Astronomical Society changes 2003 2004 2005 Release data2009c - 2009-03-16 09:47:51 -0400 2006 2007 change to the start of Cuban DST 2008 2009 2010 Release 2009b - 2009-02-09 11:15:22 -0500 2011 2012 [not summarized] 2013 2014 2015 Release 2009a - 2009-01-21 10:09:39 -0500 2016 2017 [not summarized] 2018 2019 2020 Release data2008i - 2008-10-21 12:10:25 -0400 2021 2022 southamerica and zone.tab files, with Argentina DST rule changes and 2023 United States zone reordering and recommenting 2024 2025 2026 Release 2008h - 2008-10-13 07:33:56 -0400 2027 2028 [not summarized] 2029 2030 2031 Release 2008g - 2008-10-06 09:03:18 -0400 2032 2033 Fix a broken HTML anchor and update Brazil's DST transitions; 2034 there's also a slight reordering of information in tz-art.htm. 2035 2036 2037 Release data2008f - 2008-09-09 22:33:26 -0400 2038 2039 [not summarized] 2040 2041 2042 Release 2008e - 2008-07-28 14:11:17 -0400 2043 2044 changes by Arthur David Olson and Jesper Nrgaard Welen 2045 2046 2047 Release data2008d - 2008-07-07 09:51:38 -0400 2048 2049 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 2050 2051 2052 Release data2008c - 2008-05-19 17:48:03 -0400 2053 2054 Pakistan, Morocco, and Mongolia 2055 2056 2057 Release data2008b - 2008-03-24 08:30:59 -0400 2058 2059 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 2060 link provided 2061 2062 2063 Release 2008a - 2008-03-08 05:42:16 -0500 2064 2065 [not summarized] 2066 2067 2068 Release 2007k - 2007-12-31 10:25:22 -0500 2069 2070 most importantly, changes to the "southamerica" file based on 2071 Argentina's readoption of daylight saving time 2072 2073 2074 Release 2007j - 2007-12-03 09:51:01 -0500 2075 2076 1. eliminate the "P" (parameter) macro; 2077 2078 2. the "noncontroversial" changes circulated on the time zone 2079 mailing list (less the changes to "logwtmp.c"); 2080 2081 3. eliminate "too many transition" errors when "min" is used in time 2082 zone rules; 2083 2084 4. changes by Paul Eggert (including updated information for Venezuela). 2085 2086 2087 Release data2007i - 2007-10-30 10:28:11 -0400 2088 2089 changes for Cuba and Syria 2090 2091 2092 Release 2007h - 2007-10-01 10:05:51 -0400 2093 2094 changes by Paul Eggert, as well as an updated link to the ICU 2095 project in tz-link.htm 2096 2097 2098 Release 2007g - 2007-08-20 10:47:59 -0400 2099 2100 changes by Paul Eggert 2101 2102 The "leapseconds" file has been updated to incorporate the most 2103 recent International Earth Rotation and Reference Systems Service 2104 (IERS) bulletin. 2105 2106 There's an addition to tz-art.htm regarding the television show "Medium". 2107 2108 2109 Release 2007f - 2007-05-07 10:46:46 -0400 2110 2111 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 2112 Zealand) 2113 2114 changes to zic.c to allow hour values greater than 24 (along with 2115 Paul's improved time value overflow checking) 2116 2117 2118 Release 2007e - 2007-04-02 10:11:52 -0400 2119 2120 Syria and Honduras changes by Paul Eggert 2121 2122 zic.c variable renaming changes by Arthur David Olson 2123 2124 2125 Release 2007d - 2007-03-20 08:48:30 -0400 2126 2127 changes by Paul Eggert 2128 2129 the elimination of white space at the ends of lines 2130 2131 2132 Release 2007c - 2007-02-26 09:09:37 -0500 2133 2134 changes by Paul Eggert 2135 2136 2137 Release 2007b - 2007-02-12 09:34:20 -0500 2138 2139 Paul Eggert's proposed change to the quotation handling logic in zic.c. 2140 2141 changes to the commentary in "leapseconds" reflecting the IERS 2142 announcement that there is to be no positive leap second at the end 2143 of June 2007. 2144 2145 2146 Release 2007a - 2007-01-08 12:28:29 -0500 2147 2148 changes by Paul Eggert 2149 2150 Derick Rethan's Asmara change 2151 2152 Oscar van Vlijmen's Easter Island local mean time change 2153 2154 symbolic link changes 2155 2156 2157 Release 2006p - 2006-11-27 08:54:27 -0500 2158 2159 changes by Paul Eggert 2160 2161 2162 Release 2006o - 2006-11-06 09:18:07 -0500 2163 2164 changes by Paul Eggert 2165 2166 2167 Release 2006n - 2006-10-10 11:32:06 -0400 2168 2169 changes by Paul Eggert 2170 2171 2172 Release 2006m - 2006-10-02 15:32:35 -0400 2173 2174 changes for Uruguay, Palestine, and Egypt by Paul Eggert 2175 2176 (minimalist) changes to zic.8 to clarify "until" information 2177 2178 2179 Release data2006l - 2006-09-18 12:58:11 -0400 2180 2181 Paul's best-effort work on this coming weekend's Egypt time change 2182 2183 2184 Release 2006k - 2006-08-28 12:19:09 -0400 2185 2186 changes by Paul Eggert 2187 2188 2189 Release 2006j - 2006-08-21 09:56:32 -0400 2190 2191 changes by Paul Eggert 2192 2193 2194 Release code2006i - 2006-08-07 12:30:55 -0400 2195 2196 localtime.c fixes 2197 2198 Ken Pizzini's conversion script 2199 2200 2201 Release code2006h - 2006-07-24 09:19:37 -0400 2202 2203 adds public domain notices to four files 2204 2205 includes a fix for transition times being off by a second 2206 2207 adds a new recording to the "arts" file (information courtesy Colin Bowern) 2208 2209 2210 Release 2006g - 2006-05-08 17:18:09 -0400 2211 2212 northamerica changes by Paul Eggert 2213 2214 2215 Release 2006f - 2006-05-01 11:46:00 -0400 2216 2217 a missing version number problem is fixed (with thanks to Bradley 2218 White for catching the problem) 2219 2220 2221 Release 2006d - 2006-04-17 14:33:43 -0400 2222 2223 changes by Paul Eggert 2224 2225 added new items to tz-arts.htm that were found by Paul 2226 2227 2228 Release 2006c - 2006-04-03 10:09:32 -0400 2229 2230 two sets of data changes by Paul Eggert 2231 2232 a fencepost error fix in zic.c 2233 2234 changes to zic.c and the "europe" file to minimize differences 2235 between output produced by the old 32-bit zic and the new 64-bit 2236 version 2237 2238 2239 Release 2006b - 2006-02-20 10:08:18 -0500 2240 [tz32code2006b + tz64code2006b + tzdata2006b] 2241 2242 64-bit code 2243 2244 All SCCS IDs were bumped to "8.1" for this release. 2245 2246 2247 Release 2006a - 2006-01-30 08:59:31 -0500 2248 2249 changes by Paul Eggert (in particular, Indiana time zone moves) 2250 2251 an addition to the zic manual page to describe how special-case 2252 transitions are handled 2253 2254 2255 Release 2005r - 2005-12-27 09:27:13 -0500 2256 2257 Canadian changes by Paul Eggert 2258 2259 They also add "<pre>" directives to time zone data files and reflect 2260 changes to warning message logic in "zdump.c" (but with calls to 2261 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2262 2263 2264 Release 2005q - 2005-12-13 09:17:09 -0500 2265 2266 Nothing earth-shaking here: 2267 1. Electronic mail addresses have been removed. 2268 2. Casts of the return value of exit have been removed. 2269 3. Casts of the argument of is.* macros have been added. 2270 4. Indentation in one section of zic.c has been fixed. 2271 5. References to dead URLs in the data files have been dealt with. 2272 2273 2274 Release 2005p - 2005-12-05 10:30:53 -0500 2275 2276 "systemv", "tz-link.htm", and "zdump.c" changes 2277 (less the casts of arguments to the is* macros) 2278 2279 2280 Release 2005o - 2005-11-28 10:55:26 -0500 2281 2282 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2283 2284 zdump.c lint fixes by Arthur David Olson 2285 2286 2287 Release 2005n - 2005-10-03 09:44:09 -0400 2288 2289 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2290 et al. changes) 2291 2292 2293 Release 2005m - 2005-08-29 12:15:40 -0400 2294 2295 changes by Paul Eggert (with a small tweak to the tz-art change) 2296 2297 a declaration of an unused variable has been removed from zdump.c 2298 2299 2300 Release 2005l - 2005-08-22 12:06:39 -0400 2301 2302 changes by Paul Eggert 2303 2304 overflow/underflow checks by Arthur David Olson, minus changes to 2305 the "Theory" file about the pending addition of 64-bit data (I grow 2306 less confident of the changes being accepted with each passing day, 2307 and the changes no longer increase the data files nine-fold--there's 2308 less than a doubling in size by my local Sun's reckoning) 2309 2310 2311 Release 2005k - 2005-07-14 14:14:24 -0400 2312 2313 The "leapseconds" file has been edited to reflect the recently 2314 announced leap second at the end of 2005. 2315 2316 I've also deleted electronic mail addresses from the files as an 2317 anti-spam measure. 2318 2319 2320 Release 2005j - 2005-06-13 14:34:13 -0400 2321 2322 These reflect changes to limit the length of time zone abbreviations 2323 and the characters used in those abbreviations. 2324 2325 There are also changes to handle POSIX-style "quoted" time zone 2326 environment variables. 2327 2328 The changes were circulated on the time zone mailing list; the only 2329 change since then was the removal of a couple of minimum-length of 2330 abbreviation checks. 2331 2332 2333 Release data2005i - 2005-04-21 15:04:16 -0400 2334 2335 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2336 2337 2338 Release 2005h - 2005-04-04 11:24:47 -0400 2339 2340 changes by Paul Eggert 2341 2342 minor changes to Makefile and zdump.c to produce more useful output 2343 when doing a "make typecheck" 2344 2345 2346 Release 2005g - 2005-03-14 10:11:21 -0500 2347 2348 changes by Paul Eggert (a change to current DST rules in Uruguay and 2349 an update to a link to time zone software) 2350 2351 2352 Release 2005f - 2005-03-01 08:45:32 -0500 2353 2354 data and documentation changes by Paul Eggert 2355 2356 2357 Release 2005e - 2005-02-10 15:59:44 -0500 2358 2359 [not summarized] 2360 2361 2362 Release code2005d - 2005-01-31 09:21:47 -0500 2363 2364 make zic complain about links to links if the -v flag is used 2365 2366 have "make public" do more code checking 2367 2368 add an include to "localtime.c" for the benefit of gcc systems 2369 2370 2371 Release 2005c - 2005-01-17 18:36:29 -0500 2372 2373 get better results when mktime runs on a system where time_t is double 2374 2375 changes to the data files (most importantly to Paraguay) 2376 2377 2378 Release 2005b - 2005-01-10 09:19:54 -0500 2379 2380 Get localtime and gmtime working on systems with exotic time_t types. 2381 2382 Update the leap second commentary in the "leapseconds" file. 2383 2384 2385 Release 2005a - 2005-01-01 13:13:44 -0500 2386 2387 [not summarized] 2388 2389 2390 Release code2004i - 2004-12-14 13:42:58 -0500 2391 2392 Deal with systems where time_t is unsigned. 2393 2394 2395 Release code2004h - 2004-12-07 11:40:18 -0500 2396 2397 64-bit-time_t changes 2398 2399 2400 Release 2004g - 2004-11-02 09:06:01 -0500 2401 2402 update to Cuba (taking effect this weekend) 2403 2404 other changes by Paul Eggert 2405 2406 correction of the spelling of Oslo 2407 2408 changed versions of difftime.c and private.h 2409 2410 2411 Release code2004f - 2004-10-21 10:25:22 -0400 2412 2413 Cope with wide-ranging tm_year values. 2414 2415 2416 Release 2004e - 2004-10-11 14:47:21 -0400 2417 2418 Brazil/Argentina/Israel changes by Paul Eggert 2419 2420 changes to tz-link.htm by Paul 2421 2422 one small fix to Makefile 2423 2424 2425 Release 2004d - 2004-09-22 08:27:29 -0400 2426 2427 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2428 2429 2430 Release 2004c - 2004-08-11 12:06:26 -0400 2431 2432 asctime-related changes 2433 2434 (variants of) some of the documentation changes suggested by Paul Eggert 2435 2436 2437 Release 2004b - 2004-07-19 14:33:35 -0400 2438 2439 data changes by Paul Eggert - most importantly, updates for Argentina 2440 2441 2442 Release 2004a - 2004-05-27 12:00:47 -0400 2443 2444 changes by Paul Eggert 2445 2446 Handle DST transitions that occur at the end of a month in some 2447 years but at the start of the following month in other years. 2448 2449 Add a copy of the correspondence that's the basis for claims about 2450 DST in the Navajo Nation. 2451 2452 2453 Release 2003e - 2003-12-15 09:36:47 -0500 2454 2455 changes by Arthur David Olson (primarily code changes) 2456 2457 changes by Paul Eggert (primarily data changes) 2458 2459 minor changes to "Makefile" and "northamerica" (in the latter case, 2460 optimization of the "Toronto" rules) 2461 2462 2463 Release 2003d - 2003-10-06 09:34:44 -0400 2464 2465 changes by Paul Eggert 2466 2467 2468 Release 2003c - 2003-09-16 10:47:05 -0400 2469 2470 Fix bad returns in zic.c's inleap function. 2471 Thanks to Bradley White for catching the problem! 2472 2473 2474 Release 2003b - 2003-09-16 07:13:44 -0400 2475 2476 Add a "--version" option (and documentation) to the zic and zdump commands. 2477 2478 changes to overflow/underflow checking in zic 2479 2480 a localtime typo fix. 2481 2482 Update the leapseconds and tz-art.htm files. 2483 2484 2485 Release 2003a - 2003-03-24 09:30:54 -0500 2486 2487 changes by Paul Eggert 2488 2489 a few additions and modifications to the tz-art.htm file 2490 2491 2492 Release 2002d - 2002-10-15 13:12:42 -0400 2493 2494 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2495 2496 There's also a new time zone quote in "tz-art.htm". 2497 2498 2499 Release 2002c - 2002-04-04 11:55:20 -0500 2500 2501 changes by Paul Eggert 2502 2503 Change zic.c to avoid creating symlinks to files that don't exist. 2504 2505 2506 Release 2002b - 2002-01-28 12:56:03 -0500 2507 2508 [These change notes are for Release 2002a, which was corrupted. 2509 2002b was a corrected version of 2002a.] 2510 2511 changes by Paul Eggert 2512 2513 Update the "leapseconds" file to note that there'll be no leap 2514 second at the end of June, 2002. 2515 2516 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2517 2518 Change to "difftime.c" to avoid sizeof problems. 2519 2520 2521 Release 2001d - 2001-10-09 13:31:32 -0400 2522 2523 changes by Paul Eggert 2524 2525 2526 Release 2001c - 2001-06-05 13:59:55 -0400 2527 2528 changes by Paul Eggert and Andrew Brown 2529 2530 2531 Release 2001b - 2001-04-05 16:44:38 -0400 2532 2533 changes by Paul Eggert (modulo jnorgard's typo fix) 2534 2535 tz-art.htm has been HTMLified. 2536 2537 2538 Release 2001a - 2001-03-13 12:57:44 -0500 2539 2540 changes by Paul Eggert 2541 2542 An addition to the "leapseconds" file: comments with the text of the 2543 latest IERS leap second notice. 2544 2545 Trailing white space has been removed from data file lines, and 2546 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2547 converted to tabs. 2548 2549 2550 Release 2000h - 2000-12-14 15:33:38 -0500 2551 2552 changes by Paul Eggert 2553 2554 one typo fix in the "art" file 2555 2556 With providence, this is the last update of the millennium. 2557 2558 2559 Release 2000g - 2000-10-10 11:35:22 -0400 2560 2561 changes by Paul Eggert 2562 2563 correction of John Mackin's name submitted by Robert Elz 2564 2565 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2566 Emmy Awards broadcast. 2567 2568 2569 Release 2000f - 2000-08-10 09:31:58 -0400 2570 2571 changes by Paul Eggert 2572 2573 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2574 2575 Error checking and messages in the "yearistype" script have been 2576 improved. 2577 2578 2579 Release 2000e - 2000-07-31 09:27:54 -0400 2580 2581 data changes by Paul Eggert 2582 2583 a change to the default value of the defined constant HAVE_STRERROR 2584 2585 the addition of a Dave Barry quote on DST to the tz-arts file 2586 2587 2588 Release 2000d - 2000-04-20 15:43:04 -0400 2589 2590 changes to the documentation and code of strftime for C99 conformance 2591 2592 a bug fix for date.c 2593 2594 These are based on (though modified from) changes by Paul Eggert. 2595 2596 2597 Release 2000c - 2000-03-04 10:31:43 -0500 2598 2599 changes by Paul Eggert 2600 2601 2602 Release 2000b - 2000-02-21 12:16:29 -0500 2603 2604 changes by Paul Eggert and Joseph Myers 2605 2606 modest tweaks to the tz-art.htm and tz-link.htm files 2607 2608 2609 Release 2000a - 2000-01-18 09:21:26 -0500 2610 2611 changes by Paul Eggert 2612 2613 The two hypertext documents have also been renamed. 2614 2615 2616 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2617 2618 Paul Eggert's changes 2619 2620 additions to the "zic" manual page and the "Arts.htm" file 2621 2622 2623 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2624 2625 [not summarized] 2626 2627 2628 Release data1999h - 1999-10-07 03:50:29 -0400 2629 2630 changes by Paul Eggert to "europe" (most importantly, fixing 2631 Lithuania and Estonia) 2632 2633 2634 Release 1999g - 1999-09-28 11:06:18 -0400 2635 2636 data changes by Paul Eggert (most importantly, the change for 2637 Lebanon that buys correctness for this coming Sunday) 2638 2639 The "code" file contains changes to "Makefile" and "checktab.awk" to 2640 allow better checking of time zone files before they are published. 2641 2642 2643 Release 1999f - 1999-09-23 09:48:14 -0400 2644 2645 changes by Arthur David Olson and Paul Eggert 2646 2647 2648 Release 1999e - 1999-08-17 15:20:54 -0400 2649 2650 changes circulated by Paul Eggert, although the change to handling 2651 of DST-specifying time zone names has been commented out for now 2652 (search for "XXX" in "localtime.c" for details). These files also 2653 do not make any changes to the start of DST in Brazil. 2654 2655 In addition to Paul's changes, there are updates to "Arts.htm" and 2656 cleanups of URLs. 2657 2658 2659 Release 1999d - 1999-03-30 11:31:07 -0500 2660 2661 changes by Paul Eggert 2662 2663 The Makefile's "make public" rule has also been changed to do a test 2664 compile of each individual time zone data file (which should help 2665 avoid problems such as the one we had with Nicosia). 2666 2667 2668 Release 1999c - 1999-03-25 09:47:47 -0500 2669 2670 changes by Paul Eggert, most importantly the change for Chile. 2671 2672 2673 Release 1999b - 1999-02-01 17:51:44 -0500 2674 2675 changes by Paul Eggert 2676 2677 code changes (suggested by Mani Varadarajan, mani at be.com) for 2678 correct handling of symbolic links when building using a relative directory 2679 2680 code changes to generate correct messages for failed links 2681 2682 updates to the URLs in Arts.htm 2683 2684 2685 Release 1999a - 1999-01-19 16:20:29 -0500 2686 2687 error message internationalizations and corrections in zic.c and 2688 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2689 to whom thanks!) 2690 2691 2692 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2693 2694 changes for Brazil, Chile, and Germany 2695 2696 support for use of "24:00" in the input files for the time zone compiler 2697 2698 2699 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2700 2701 changes by Paul Eggert 2702 2703 correction to a define in the "private.h" file 2704 2705 2706 Release data1998g - 1998-08-11 03:28:35 -0000 2707 [tzdata1998g.tar.gz is missing!] 2708 2709 Lithuanian change provided by mgedmin at pub.osf.it 2710 2711 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2712 "backward") to ensure that the GMT file is created even where folks 2713 don't want the "backward" links (as suggested by Paul Eggert). 2714 2715 2716 Release data1998f - 1998-07-20 13:50:00 -0000 2717 [tzdata1998f.tar.gz is missing!] 2718 2719 Update the "leapseconds" file to include the newly-announced 2720 insertion at the end of 1998. 2721 2722 2723 Release code1998f - 1998-06-01 10:18:31 -0400 2724 2725 addition to localtime.c by Guy Harris 2726 2727 2728 Release 1998e - 1998-05-28 09:56:26 -0400 2729 2730 The Makefile is changed to produce zoneinfo-posix rather than 2731 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2732 zoneinfo/right. 2733 2734 data changes by Paul Eggert 2735 2736 changes from Guy Harris to provide asctime_r and ctime_r 2737 2738 A usno1998 file (substantially identical to usno1997) has been added. 2739 2740 2741 Release 1998d - 1998-05-14 11:58:34 -0400 2742 2743 changes to comments (in particular, elimination of references to CIA maps). 2744 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2745 where changes occur. 2746 2747 2748 Release 1998c - 1998-02-28 12:32:26 -0500 2749 2750 changes by Paul Eggert (save the "French correction," on which I'll 2751 wait for the dust to settle) 2752 2753 symlink changes 2754 2755 changes and additions to Arts.htm 2756 2757 2758 Release 1998b - 1998-01-17 14:31:51 -0500 2759 2760 URL cleanups and additions 2761 2762 2763 Release 1998a - 1998-01-13 12:37:35 -0500 2764 2765 changes by Paul Eggert 2766 2767 2768 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 2769 2770 changes by Paul Eggert, with minor modifications from Arthur David 2771 Olson to make the files more browser friendly 2772 2773 2774 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 2775 2776 minor changes to put "TZif" at the start of each time zone information file 2777 2778 a rule has also been added to the Makefile so you can 2779 make zones 2780 to just recompile the zone information files (rather than doing a 2781 full "make install" with its other effects). 2782 2783 2784 Release data1997i - 1997-10-07 08:45:38 -0400 2785 2786 changes to Africa by Paul Eggert 2787 2788 2789 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 2790 2791 corrections for Uruguay (and other locations) 2792 2793 Arthur David Olson's simple-minded fix allowing mktime to both 2794 correctly handle leap seconds and correctly handle tm_sec values 2795 upon which arithmetic has been performed. 2796 2797 2798 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 2799 2800 Paul Eggert's updates 2801 2802 a small change to a function prototype; 2803 2804 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 2805 include information on Around the World in Eighty Days. 2806 2807 2808 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 2809 2810 fixes to zic's error handling 2811 2812 changes inspired by the item circulated on Slovenia 2813 2814 The description of Web resources has been HTMLified for browsing 2815 convenience. 2816 2817 A new piece of tz-related music has been added to the "Music" file. 2818 2819 2820 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 2821 2822 Paul Eggert's latest suggestions 2823 2824 2825 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 2826 2827 changes to "zic.c" to correct performance of the "-s" option 2828 2829 a new file "usno1997" 2830 2831 2832 Release data1997c - 1997-03-04 09:58:18 -0500 2833 2834 changes in Israel 2835 2836 2837 Release 1997b - 1997-02-27 18:34:19 -0500 2838 2839 The data file incorporates the 1997 leap second. 2840 2841 The code file incorporates Arthur David Olson's take on the 2842 zic/multiprocessor/directory-creation situation. 2843 2844 2845 Release 1997a - 1997-01-21 09:11:10 -0500 2846 2847 Paul Eggert's Antarctica (and other changes) 2848 2849 Arthur David Olson finessed the "getopt" issue by checking against 2850 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 2851 is returned while SunOS 5.5's manual says EOF is returned). 2852 2853 2854 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 2855 2856 Paul Eggert's latest changes 2857 2858 2859 Release code1996n - 1996-12-16 09:42:02 -0500 2860 2861 link snapping fix from Bruce Evans (via Garrett Wollman) 2862 2863 2864 Release data1996m - 1996-11-24 02:37:34 -0000 2865 [tzdata1996m.tar.gz is missing!] 2866 2867 Paul Eggert's batch of changes 2868 2869 2870 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 2871 2872 No functional changes here; the files have simply been changed to 2873 make more use of ISO style dates in comments. The names of the above 2874 files now include the year in full. 2875 2876 2877 Release code96l - 1996-09-08 17:12:20 -0400 2878 2879 tzcode96k was missing a couple of pieces. 2880 2881 2882 Release 96k - 1996-09-08 16:06:22 -0400 2883 2884 the latest round of changes from Paul Eggert 2885 2886 the recent Year 2000 material 2887 2888 2889 Release code96j - 1996-07-30 13:18:53 -0400 2890 2891 Set sp->typecnt as suggested by Timothy Patrick Murphy. 2892 2893 2894 Release code96i - 1996-07-27 20:11:35 -0400 2895 2896 Paul's suggested patch for strftime %V week numbers 2897 2898 2899 Release data96i - 1996-07-01 18:13:04 -0400 2900 2901 "northamerica" and "europe" changes by Paul Eggert 2902 2903 2904 Release code96h - 1996-06-05 08:02:21 -0400 2905 2906 fix for handling transitions specified in Universal Time 2907 2908 Some "public domain" notices have also been added. 2909 2910 2911 Release code96g - 1996-05-16 14:00:26 -0400 2912 2913 fix for the simultaneous-DST-and-zone-change challenge 2914 2915 2916 Release data96h - 1996-05-09 17:40:51 -0400 2917 2918 changes by Paul Eggert 2919 2920 2921 Release code96f-data96g - 1996-05-03 03:09:59 -0000 2922 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 2923 2924 The changes get us some of the way to fixing the problems noted in Paul 2925 Eggert's letter yesterday (in addition to a few others). The approach 2926 has been to make zic a bit smarter about figuring out what time zone 2927 abbreviations apply just after the time specified in the "UNTIL" part 2928 of a zone line. Putting the smarts in zic means avoiding having 2929 transition times show up in both "Zone" lines and "Rule" lines, which 2930 in turn avoids multiple transition time entries in time zone files. 2931 (This also makes the zic input files such as "europe" a bit shorter and 2932 should ease maintenance.) 2933 2934 2935 Release data96f - 1996-04-19 19:20:03 -0000 2936 [tzdata96f.tar.gz is missing!] 2937 2938 The only changes are to the "northamerica" file; the time zone 2939 abbreviation for Denver is corrected to MST (and MDT), and the 2940 comments for Mexico have been updated. 2941 2942 2943 Release data96e - 1996-03-19 17:37:26 -0500 2944 2945 Proposals by Paul Eggert, in particular the Portugal change that 2946 comes into play at the end of this month. 2947 2948 2949 Release data96d - 1996-03-18 20:49:39 -0500 2950 2951 [not summarized] 2952 2953 2954 Release code96e - 1996-02-29 15:43:27 -0000 2955 [tzcode96e.tar.gz is missing!] 2956 2957 internationalization changes and the fix to the documentation for strftime 2958 2959 2960 Release code96d-data96c - 1996-02-12 11:05:27 -0500 2961 2962 The "code" file simply updates Bob Kridle's electronic address. 2963 2964 The "data" file updates rules for Mexico. 2965 2966 2967 Release data96b - 1996-01-27 15:44:42 -0500 2968 2969 Kiribati change 2970 2971 2972 Release code96c - 1996-01-16 16:58:15 -0500 2973 2974 leap-year streamlining and binary-search changes 2975 2976 fix to newctime.3 2977 2978 2979 Release code96b - 1996-01-10 20:42:39 -0500 2980 2981 fixes and enhancements from Paul Eggert, including code that 2982 emulates the behavior of recent versions of the SunOS "date" 2983 command. 2984 2985 2986 Release 96a - 1996-01-06 09:08:24 -0500 2987 2988 Israel updates 2989 2990 fixes to strftime.c for correct ISO 8601 week number generation, 2991 plus support for two new formats ('G' and 'g') to give ISO 8601 year 2992 numbers (which are not necessarily the same as calendar year numbers) 2993 2994 2995 Release code95i-data95m - 1995-12-21 12:46:47 -0500 2996 2997 The latest revisions from Paul Eggert are included, the usno1995 2998 file has been updated, and a new file ("WWW") covering useful URLs 2999 has been added. 3000 3001 3002 Release code95h-data95l - 1995-12-19 18:10:12 -0500 3003 3004 A simplification of a macro definition, a change to data for Sudan, 3005 and (for last minute shoppers) notes in the "Music" file on the CD 3006 "Old Man Time". 3007 3008 3009 Release code95g-data95k - 1995-10-30 10:32:47 -0500 3010 3011 (slightly reformatted) 8-bit-clean proposed patch 3012 3013 minor patch: US/Eastern -> America/New_York 3014 3015 snapshot of the USNO's latest data ("usno1995") 3016 3017 some other minor cleanups 3018 3019 3020 Release code95f-data95j - 1995-10-28 21:01:34 -0000 3021 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 3022 3023 European cleanups 3024 3025 support for 64-bit time_t's 3026 3027 optimization in localtime.c 3028 3029 3030 Release code95e - 1995-10-13 13:23:57 -0400 3031 3032 the mktime change to scan from future to past when trying to find time zone 3033 offsets 3034 3035 3036 Release data95i - 1995-09-26 10:43:26 -0400 3037 3038 For Canada/Central, guess that the Sun customer's "one week too 3039 early" was just a approximation, and the true error is one month 3040 too early. This is consistent with the rest of Canada. 3041 3042 3043 Release data95h - 1995-09-21 11:26:48 -0400 3044 3045 latest changes from Paul Eggert 3046 3047 3048 Release code95d - 1995-09-14 11:14:45 -0400 3049 3050 the addition of a "Music" file, which documents four recorded 3051 versions of the tune "Save That Time". 3052 3053 3054 Release data95g - 1995-09-01 17:21:36 -0400 3055 3056 "yearistype" correction 3057 3058 3059 Release data95f - 1995-08-28 20:46:56 -0400 3060 3061 Paul Eggert's change to the australasia file 3062 3063 3064 Release data95e - 1995-07-08 18:02:34 -0400 3065 3066 The only change is a leap second at the end of this year. 3067 Thanks to Bradley White for forwarding news on the leap second. 3068 3069 3070 Release data95d - 1995-07-03 13:26:22 -0400 3071 3072 Paul Eggert's changes 3073 3074 3075 Release data95c - 1995-07-02 19:19:28 -0400 3076 3077 changes to "asia", "backward", "europe", and "southamerica" 3078 (read: northamericacentrics need not apply) 3079 3080 3081 Release code95c - 1995-03-13 14:00:46 -0500 3082 3083 one-line fix for sign extension problems in detzcode 3084 3085 3086 Release 95b - 1995-03-04 11:22:38 -0500 3087 3088 Minor changes in both: 3089 3090 The "code" file contains a workaround for the lack of "unistd.h" in 3091 Microsoft C++ version 7. 3092 3093 The "data" file contains a fixed "Link" for America/Shiprock. 3094 3095 3096 Release 94h - 1994-12-10 12:51:14 -0500 3097 3098 The files: 3099 3100 * incorporate the changes to "zdump" and "date" to make changes to 3101 the "TZ" environment variable permanent; 3102 3103 * incorporate the table changes by Paul Eggert; 3104 3105 * include (and document) support for universal time specifications in 3106 data files - but do not (yet) include use of this feature in the 3107 data files. 3108 3109 Think of this as "TZ Classic" - the software has been set up not to break if 3110 universal time shows up in its input, and data entries have been 3111 left as is so as not to break existing implementations. 3112 3113 3114 Release data94f - 1994-08-20 12:56:09 -0400 3115 3116 (with thanks!) the latest data updates from Paul Eggert 3117 3118 3119 Release data94e - 1994-06-04 13:13:53 -0400 3120 3121 [not summarized] 3122 3123 3124 Release code94g - 1994-05-05 12:14:07 -0400 3125 3126 fix missing "optind.c" and a reference to it in the Makefile 3127 3128 3129 Release code94f - 1994-05-05 13:00:33 -0000 3130 [tzcode94f.tar.gz is missing!] 3131 3132 changes to avoid overflow in difftime, as well as changes to cope 3133 with the 52/53 challenge in strftime 3134 3135 3136 Release code94e - 1994-03-30 23:32:59 -0500 3137 3138 change for the benefit of PCTS 3139 3140 3141 Release 94d - 1994-02-24 15:42:25 -0500 3142 3143 Avoid clashes with POSIX semantics for zones such as GMT+4. 3144 3145 Some other very minor housekeeping is also present. 3146 3147 3148 Release code94c - 1994-02-10 08:52:40 -0500 3149 3150 Fix bug where mkdirs was broken unless you compile with 3151 -fwritable-strings (which is generally losing to do). 3152 3153 3154 Release 94b - 1994-02-07 10:04:33 -0500 3155 3156 work by Paul Eggert who notes: 3157 3158 I found another book of time zone histories by E W Whitman; it's not 3159 as extensive as Shanks but has a few goodies of its own. I used it 3160 to update the tables. I also fixed some more as a result of 3161 correspondence with Adam David and Peter Ilieve, and move some stray 3162 links from 'europe' to 'backward'. I corrected some scanning errors 3163 in usno1989. 3164 3165 As far as the code goes, I fixed zic to allow years in the range 3166 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 3167 And I cleaned up the zic documentation a little bit. 3168 3169 3170 Release data94a - 1994-02-03 08:58:54 -0500 3171 3172 It simply incorporates the recently announced leap second into the 3173 "leapseconds" file. 3174 3175 3176 Release 93g - 1993-11-22 17:28:27 -0500 3177 3178 Paul Eggert has provided a good deal of historic information (based 3179 on Shanks), and there are some code changes to deal with the buglets 3180 that crawled out in dealing with the new information. 3181 3182 3183 Release 93f - 1993-10-15 12:27:46 -0400 3184 3185 Paul Eggert's changes 3186 3187 3188 Release 93e - 1993-09-05 21:21:44 -0400 3189 3190 This has updated data for Israel, England, and Kwajalein. There's 3191 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 3192 Thanks to Paul Eggert and Peter Ilieve for the changes. 3193 3194 3195 Release 93d - 1993-06-17 23:34:17 -0400 3196 3197 new fix and new data on Israel 3198 3199 3200 Release 93c - 1993-06-06 19:31:55 -0400 3201 3202 [not summarized] 3203 3204 3205 Release 93b - 1993-02-02 14:53:58 -0500 3206 3207 updated "leapseconds" file 3208 3209 3210 Release 93 - 1993-01-08 07:01:06 -0500 3211 3212 At kre's suggestion, the package has been split in two - a code piece 3213 (which also includes documentation) that's only of use to folks who 3214 want to recompile things and a data piece useful to anyone who can 3215 run "zic". 3216 3217 The new version has a few changes to the data files, a few 3218 portability changes, and an off-by-one fix (with thanks to 3219 Tom Karzes at deshaw.com for providing a description and a 3220 solution). 3221 3222 3223 Release 92c - 1992-11-21 17:35:36 -0000 3224 [tz92c.tar.Z is missing!] 3225 3226 The fallout from the latest round of DST transitions. 3227 3228 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3229 there's also a change to "zic.c" that makes it portable to more systems. 3230 3231 3232 Release 92 - 1992-04-25 18:17:03 -0000 3233 [tz92.tar.Z is missing!] 3234 3235 By popular demand (well, at any rate, following a request by kre at munnari) 3236 3237 3238 The 1989 update of the time zone package featured: 3239 3240 * POSIXization (including interpretation of POSIX-style TZ environment 3241 variables, provided by Guy Harris), 3242 * ANSIfication (including versions of "mktime" and "difftime"), 3243 * SVIDulation (an "altzone" variable) 3244 * MACHination (the "gtime" function) 3245 * corrections to some time zone data (including corrections to the rules 3246 for Great Britain and New Zealand) 3247 * reference data from the United States Naval Observatory for folks who 3248 want to do additional time zones 3249 * and the 1989 data for Saudi Arabia. 3250 3251 (Since this code will be treated as "part of the implementation" in some 3252 places and as "part of the application" in others, there's no good way to 3253 name functions, such as timegm, that are not part of the proposed ANSI C 3254 standard; such functions have kept their old, underscore-free names in this 3255 update.) 3256 3257 And the "dysize" function has disappeared; it was present to allow 3258 compilation of the "date" command on old BSD systems, and a version of "date" 3259 is now provided in the package. The "date" command is not created when you 3260 "make all" since it may lack options provided by the version distributed with 3261 your operating system, or may not interact with the system in the same way 3262 the native version does. 3263 3264 Since POSIX frowns on correct leap second handling, the default behavior of 3265 the "zic" command (in the absence of a "-L" option) has been changed to omit 3266 leap second information from its output files. 3267 3268 3269 ----- 3270 Notes 3271 3272 This file contains copies of the part of each release announcement 3273 that talks about the changes in that release. The text has been 3274 adapted and reformatted for the purposes of this file. 3275 3276 Typically a release R consists of a pair of tarball files, 3277 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3278 code2010a, data2012c) consist of just one or the other tarball, and a 3279 few (e.g., code2012c-data2012d) have tarballs with mixed version 3280 numbers. 3281 3282 Release time stamps are taken from the release's commit (for newer, 3283 git releases), from the newest file in the tarball (for older 3284 releases, where this info is available) or from the email announcing 3285 the release (if all else fails; these are marked with a time zone of 3286 -0000 and an "is missing!" comment). 3287 3288 Earlier versions of the code and data were not announced on the tz 3289 list and are not summarized here. 3290 3291 This file is in the public domain. 3292 3293 Local Variables: 3294 coding: utf-8 3295 End: 3296
Indexes created Mon Sep 29 03:10:08 GMT 2025