NEWS revision 1.10
1 News for the tz database 2 3 Release 2015b - 2015-03-19 23:28:11 -0700 4 5 Changes affecting future time stamps 6 7 Mongolia will start observing DST again this year, from the last 8 Saturday in March at 02:00 to the last Saturday in September at 00:00. 9 (Thanks to Ganbold Tsagaankhuu.) 10 11 Palestine will start DST on March 28, not March 27. Also, 12 correct the fall 2014 transition from September 26 to October 24. 13 Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 14 15 Changes affecting past time stamps 16 17 The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 18 regression. (Thanks to Stuart Bishop for reporting the problem.) 19 20 Some more zones have been turned into links, when they differed 21 from existing zones only for older time stamps. As usual, 22 these changes affect UTC offsets in pre-1970 time stamps only. 23 Their old contents have been moved to the 'backzone' file. 24 The affected zones are: America/Antigua, America/Cayman, 25 Pacific/Midway, and Pacific/Saipan. 26 27 Changes affecting time zone abbreviations 28 29 Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 30 (Thanks to Hank W.) 31 32 Changes affecting code 33 34 Fix integer overflow bug in reference 'mktime' implementation. 35 (Problem reported by Jrg Richter.) 36 37 Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 38 to be used in the same executable as standard-library time_t functions. 39 (Problems reported by Bradley White.) 40 41 Changes affecting commentary 42 43 Cite the recent Mexican decree changing Quintana Roo's time zone. 44 (Thanks to Carlos Ral Perasso.) 45 46 Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 47 48 Update info about Mars time. 49 50 51 Release 2015a - 2015-01-29 22:35:20 -0800 52 53 Changes affecting future time stamps 54 55 The Mexican state of Quintana Roo, represented by America/Cancun, 56 will shift from Central Time with DST to Eastern Time without DST 57 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 58 59 Chile will not change clocks in April or thereafter; its new standard time 60 will be its old daylight saving time. This affects America/Santiago, 61 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 62 63 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 64 (Thanks to Tim Parenti.) 65 66 Changes affecting past time stamps 67 68 Iceland observed DST in 1919 and 1921, and its 1939 fallback 69 transition was Oct. 29, not Nov. 29. Remove incorrect data from 70 Shanks about time in Iceland between 1837 and 1908. 71 72 Some more zones have been turned into links, when they differed 73 from existing zones only for older time stamps. As usual, 74 these changes affect UTC offsets in pre-1970 time stamps only. 75 Their old contents have been moved to the 'backzone' file. 76 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 77 and Asia/Muscat. 78 79 Changes affecting code 80 81 tzalloc now scrubs time zone abbreviations compatibly with the way 82 that tzset always has, by replacing invalid bytes with '_' and by 83 shortening too-long abbreviations. 84 85 tzselect ports to POSIX awk implementations, no longer mishandles 86 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 87 settings to the user. (Thanks to Stefan Kuhn.) 88 89 Changes affecting build procedure 90 91 'make check' now checks for links to links in the data. 92 One such link (for Africa/Asmera) has been fixed. 93 (Thanks to Stephen Colebourne for pointing out the problem.) 94 95 Changes affecting commentary 96 97 The leapseconds file commentary now mentions the expiration date. 98 (Problem reported by Martin Burnicki.) 99 100 Update Mexican Library of Congress URL. 101 102 103 Release 2014j - 2014-11-10 17:37:11 -0800 104 105 Changes affecting current and future time stamps 106 107 Turks & Caicos' switch from US eastern time to UTC-4 year-round 108 did not occur on 2014-11-02 at 02:00. It's currently scheduled 109 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 110 111 Changes affecting past time stamps 112 113 Many pre-1989 time stamps have been corrected for Asia/Seoul and 114 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 115 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 116 longer guess that Pyongyang mimicked Seoul time after World War II, 117 as this is politically implausible. 118 119 Some more zones have been turned into links, when they differed 120 from existing zones only for older time stamps. As usual, 121 these changes affect UTC offsets in pre-1970 time stamps only. 122 Their old contents have been moved to the 'backzone' file. 123 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 124 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 125 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 126 Indian/Mayotte. 127 128 Changes affecting commentary 129 130 The commentary is less enthusiastic about Shanks as a source, 131 and is more careful to distinguish UT from UTC. 132 133 134 Release 2014i - 2014-10-21 22:04:57 -0700 135 136 Changes affecting future time stamps 137 138 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 139 (Thanks to Ken Rylander for the heads-up.) Guess that future 140 years will use a similar pattern. 141 142 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 143 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 144 (Thanks to Kiley Walbom for the heads-up.) 145 146 Changes affecting time zone abbreviations 147 148 Since Belarus is not changing its clocks even though Moscow is, 149 the time zone abbreviation in Europe/Minsk is changing from FET 150 to its more-traditional value MSK on 2014-10-26 at 01:00. 151 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 152 153 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 154 Indochina, to distinguish it better from ICT (UT+7). 155 156 Changes affecting past time stamps 157 158 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 159 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 160 authoritative book). Asia/Ho_Chi_Minh has been added to 161 zone1970.tab, to give tzselect users in Vietnam two choices, 162 since north and south Vietnam disagreed after our 1970 cutoff. 163 164 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 165 they differed from existing zones only for older time stamps. As 166 usual, these changes affect pre-1970 time stamps only. Their old 167 contents have been moved to the 'backzone' file. 168 169 Changes affecting code 170 171 The time-related library functions now set errno on failure, and 172 some crashes in the new tzalloc-related library functions have 173 been fixed. (Thanks to Christos Zoulas for reporting most of 174 these problems and for suggesting fixes.) 175 176 If USG_COMPAT is defined and the requested time stamp is standard time, 177 the tz library's localtime and mktime functions now set the extern 178 variable timezone to a value appropriate for that time stamp; and 179 similarly for ALTZONE, daylight saving time, and the altzone variable. 180 This change is a companion to the tzname change in 2014h, and is 181 designed to make timezone and altzone more compatible with tzname. 182 183 The tz library's functions now set errno to EOVERFLOW if they fail 184 because the result cannot be represented. ctime and ctime_r now 185 return NULL and set errno when a time stamp is out of range, rather 186 than having undefined behavior. 187 188 Some bugs associated with the new 2014g functions have been fixed. 189 This includes a bug that largely incapacitated the new functions 190 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 191 It also includes some uses of uninitialized variables after tzalloc. 192 The new code uses the standard type 'ssize_t', which the Makefile 193 now gives porting advice about. 194 195 Changes affecting commentary 196 197 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 198 199 200 Release 2014h - 2014-09-25 18:59:03 -0700 201 202 Changes affecting past time stamps 203 204 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 205 206 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 207 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 208 209 Some more zones have been turned into links, when they differed 210 from existing zones only for older time stamps. As usual, 211 these changes affect UTC offsets in pre-1970 time stamps only. 212 Their old contents have been moved to the 'backzone' file. 213 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 214 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 215 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 216 217 Changes affecting code 218 219 zdump -V and -v now output gmtoff= values on all platforms, 220 not merely on platforms defining TM_GMTOFF. 221 222 The tz library's localtime and mktime functions now set tzname to a value 223 appropriate for the requested time stamp, and zdump now uses this 224 on platforms not defining TM_ZONE, fixing a 2014g regression. 225 (Thanks to Tim Parenti for reporting the problem.) 226 227 The tz library no longer sets tzname if localtime or mktime fails. 228 229 zdump -c no longer mishandles transitions near year boundaries. 230 (Thanks to Tim Parenti for reporting the problem.) 231 232 An access to uninitalized data has been fixed. 233 (Thanks to Jrg Richter for reporting the problem.) 234 235 When THREAD_SAFE is defined, the code ports to the C11 memory model. 236 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 237 and two threads race to initialize data used by gmtime-like functions. 238 (Thanks to Andy Heninger for reporting the problems.) 239 240 Changes affecting build procedure 241 242 'make check' now checks better for properly-sorted data. 243 244 Changes affecting documentation and commentary 245 246 zdump's gmtoff=N output is now documented, and its isdst=D output 247 is now documented to possibly output D values other than 0 or 1. 248 249 zdump -c's treatment of years is now documented to use the 250 Gregorian calendar and Universal Time without leap seconds, 251 and its behavior at cutoff boundaries is now documented better. 252 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 253 254 Programs are now documented to use the proleptic Gregorian calendar. 255 (Thanks to Alan Barrett for the suggestion.) 256 257 Fractional-second GMT offsets have been documented for civil time 258 in 19th-century Chennai, Jakarta, and New York. 259 260 261 Release 2014g - 2014-08-28 12:31:23 -0700 262 263 Changes affecting future time stamps 264 265 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 266 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 267 [As noted in 2014j, this switch was later delayed.] 268 269 Changes affecting past time stamps 270 271 Time in Russia or the USSR before 1926 or so has been corrected by 272 a few seconds in the following zones: Asia/Irkutsk, 273 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 274 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 275 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 276 Vladimir Karpinsky.) 277 278 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 279 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 280 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 281 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 282 (Thanks to Stephen Colebourne for pointing to the decree.) 283 284 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 285 286 A new file 'backzone' contains data which may appeal to 287 connoisseurs of old time stamps, although it is out of scope for 288 the tz database, is often poorly sourced, and contains some data 289 that is known to be incorrect. The new file is not recommended 290 for ordinary use and its entries are not installed by default. 291 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 292 Isle of Man entries.) 293 294 Some more zones have been turned into links, when they differed 295 from existing zones only for older time stamps. As usual, 296 these changes affect UTC offsets in pre-1970 time stamps only. 297 Their old contents have been moved to the 'backzone' file. 298 The affected zones are: Africa/Bangui, Africa/Brazzaville, 299 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 300 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 301 302 Changes affecting code 303 304 Unless NETBSD_INSPIRED is defined to 0, the tz library now 305 supplies functions for creating and using objects that represent 306 time zones. The new functions are tzalloc, tzfree, localtime_rz, 307 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 308 time2posix_z. They are intended for performance: for example, 309 localtime_rz (unlike localtime_r) is trivially thread-safe without 310 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 311 functions, and to Alan Barrett and Jonathan Lennox for helping to 312 debug the change.) 313 314 zdump now builds with the tz library unless USE_LTZ is defined to 0, 315 This lets zdump use tz features even if the system library lacks them. 316 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 317 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 318 319 zdump now uses localtime_rz if available, as it's significantly faster, 320 and it can help zdump better diagnose invalid time zone names. 321 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 322 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 323 not available, zdump now uses localtime_r and tzset if available, 324 as this is a bit cleaner and faster than plain localtime. Compile 325 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 326 lacks these two functions. 327 328 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 329 Although not needed for tz's own applications, which are single-threaded, 330 this supports POSIX better if the tz library is used in multithreaded apps. 331 332 Some crashes have been fixed when zdump or the tz library is given 333 invalid or outlandish input. 334 335 The tz library no longer mishandles leap seconds on platforms with 336 unsigned time_t in time zones that lack ordinary transitions after 1970. 337 338 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 339 already defined, to make it easier to configure on common platforms. 340 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 341 342 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 343 assumes that reading uninitialized memory yields garbage values 344 but does not cause other problems such as traps. 345 346 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 347 more likely to guess right for ambiguous time stamps near 348 transitions where tm_isdst does not change. 349 350 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 351 strftime_l for compatibility with recent versions of POSIX. 352 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 353 to 1 on recent POSIX versions, and to 0 otherwise. 354 355 tzselect -c now uses a hybrid distance measure that works better 356 in Africa. (Thanks to Alan Barrett for noting the problem.) 357 358 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 359 or when time_tz is defined. 360 361 When HAVE_UTMPX_H is set the 'date' command now builds on systems 362 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 363 the date it updates the wtmpx file if _PATH_WTMPX is defined. 364 This affects GNU/Linux and similar systems. 365 366 For easier maintenance later, some C code has been simplified, 367 some lint has been removed, and the code has been tweaked so that 368 plain 'make' is more likely to work. 369 370 The C type 'bool' is now used for boolean values, instead of 'int'. 371 372 The long-obsolete LOCALE_HOME code has been removed. 373 374 The long-obsolete 'gtime' function has been removed. 375 376 Changes affecting build procedure 377 378 'zdump' no longer links in ialloc.o, as it's not needed. 379 380 'make check_time_t_alternatives' no longer assumes GNU diff. 381 382 Changes affecting distribution tarballs 383 384 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 385 the tzdata tarball instead of the tzcode tarball, since they help 386 maintain the data. The NEWS and Theory files are now also 387 distributed in the tzdata tarball, as they're relevant for data. 388 (Thanks to Alan Barrett for pointing this out.) Also, the 389 leapseconds.awk file is no longer distributed in the tzcode 390 tarball, since it belongs in the tzdata tarball (where 2014f 391 inadvertently also distributed it). 392 393 Changes affecting documentation and commentary 394 395 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 396 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 397 for debugging it.) 398 399 The man pages have been updated to use function prototypes, 400 to document thread-safe variants like localtime_r, and to document 401 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 402 mktime_z. 403 404 The fields in Link lines have been renamed to be more descriptive 405 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 406 and LINK-TO has become LINK-NAME. 407 408 tz-link.htm mentions the IETF's tzdist working group; Windows 409 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 410 411 Some broken URLs have been fixed in the commentary. (Thanks to 412 Lester Caine.) 413 414 Commentary about Philippines DST has been updated, and commentary 415 on pre-1970 time in India has been added. 416 417 418 Release 2014f - 2014-08-05 17:42:36 -0700 419 420 Changes affecting future time stamps 421 422 Russia will subtract an hour from most of its time zones on 2014-10-26 423 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 424 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 425 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 426 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 427 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 428 (Europe/Samara) are not changing their clocks. The changed zones are 429 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 430 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 431 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 432 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 433 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 434 but not its UTC offset. Two zones are added: Asia/Chita (split 435 from Asia/Yakutsk, and also with two hours subtracted) and 436 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 437 subtracted). (Thanks to Tim Parenti for much of the above.) 438 439 Changes affecting time zone abbreviations 440 441 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 442 and similarly for the other Australian zones. That is, for eastern 443 standard and daylight saving time the abbreviations are AEST and AEDT 444 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 445 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 446 This change does not affect UTC offsets, only time zone abbreviations. 447 (Thanks to Rich Tibbett and many others.) 448 449 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 450 effective 2014-10-26 at 02:00 local time. 451 452 The time zone abbreviation for Xinjiang Time (observed in rmqi) 453 has been changed from URUT to XJT. (Thanks to Luther Ma.) 454 455 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 456 Similarly, prefer EET/EEST for eastern European time in Russia. 457 458 Change time zone abbreviations in (western) Samoa to use "ST" and 459 "DT" suffixes, as this is more likely to match common practice. 460 Prefix "W" to (western) Samoa time when its standard-time offset 461 disagrees with that of American Samoa. 462 463 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 464 465 Time zone abbreviations have been updated for Japan's two time 466 zones used 1896-1937. JWST now stands for Western Standard 467 Time, and JCST for Central Standard Time (formerly this was CJT). 468 These abbreviations are now used for time in Korea, Taiwan, 469 and Sakhalin while controlled by Japan. 470 471 Changes affecting past time stamps 472 473 China's five zones have been simplified to two, since the post-1970 474 differences in the other three seem to have been imaginary. The 475 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 476 removed; backwards-compatibility links still work, albeit with 477 different behaviors for time stamps before May 1980. Asia/Urumqi's 478 1980 transition to UTC+8 has been removed, so that it is now at 479 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 480 Treindl sent helpful translations of two papers by Guo Qingsheng.) 481 482 Some zones have been turned into links, when they differed from existing 483 zones only for older UTC offsets where data entries were likely invented. 484 These changes affect UTC offsets in pre-1970 time stamps only. This is 485 similar to the change in release 2013e, except this time for western 486 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 487 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 488 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 489 Atlantic/St_Helena. This also affects the backwards-compatibility 490 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 491 Tim Parenti, and David Patte for reporting problems in earlier 492 versions of this change.) 493 494 Asia/Shanghai's pre-standard-time UT offset has been changed from 495 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 496 transition to standard time has been changed from 1928 to 1901. 497 498 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 499 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 500 In 1946 it observed DST from 05-15 through 09-30; in 1947 501 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 502 (Thanks to Yu-Cheng Chuang.) 503 504 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 505 506 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 507 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 508 509 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 510 from 1911 to 1950. 511 512 Pacific/Chatham has been changed to New Zealand standard time plus 513 45 minutes for the period before 1957, reflecting a 1956 remark in 514 the New Zealand parliament. 515 516 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 517 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 518 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 519 not 04-06 at 02:00; and there was no DST in 1920. 520 521 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 522 523 Time in Russia before 1927 or so has been corrected by a few seconds in 524 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 525 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 526 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 527 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 528 529 Changes affecting data format 530 531 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 532 The new file's extended format allows multiple country codes per zone. 533 The older file is still installed but is deprecated; its format is 534 not changing and it will still be distributed for a while, but new 535 applications should use the new file. 536 537 The new file format simplifies maintenance of obscure locations. 538 To test this, it adds coverage for the Crozet Islands and the 539 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 540 541 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 542 It is still ASCII now, but commentary about the switch has been added. 543 The new file 'zone1970.tab' already uses UTF-8. 544 545 Changes affecting code 546 547 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 548 is defined. (Thanks to Elliott Hughes for reporting the problem.) 549 550 'zic' no longer mishandles input when ignoring case in locales that 551 are not compatible with English, e.g., unibyte Turkish locales when 552 compiled with HAVE_GETTEXT. 553 554 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 555 they no longer use ASCII '-' as if it were a dash. 556 557 'zic' now rejects output file names that contain '.' or '..' components. 558 (Thanks to Tim Parenti for reporting the problem.) 559 560 'zic -v' now warns about output file names that do not follow 561 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 562 David Olson for starting the ball rolling on this.) 563 564 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 565 566 Changes affecting build procedure 567 568 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 569 (Thanks to John Cochran.) 570 571 Changes affecting documentation and commentary 572 573 The 'Theory' file documents legacy names, the longstanding 574 exceptions to the POSIX-inspired file name rules. 575 576 The 'zic' documentation clarifies the role of time types when 577 interpreting dates. (Thanks to Arthur David Olson.) 578 579 Documentation and commentary now prefer UTF-8 to US-ASCII, 580 allowing the use of proper accents in foreign words and names. 581 Code and data have not changed because of this. (Thanks to 582 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 583 this.) 584 585 Non-HTML documentation and commentary now use plain-text URLs instead of 586 HTML insertions, and are more consistent about bracketing URLs when they 587 are not already surrounded by white space. (Thanks to suggestions by 588 Steffen Nurpmeso.) 589 590 There is new commentary about Xujiahui Observatory, the five time-zone 591 project in China from 1918 to 1949, timekeeping in Japanese-occupied 592 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 593 warlord Jin Shuren in the data. 594 595 Commentary about the coverage of each Russian zone has been standardized. 596 (Thanks to Tim Parenti). 597 598 There is new commentary about contemporary timekeeping in Ethiopia. 599 600 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 601 602 There is new commentary about time in Poland in 1919. 603 604 Proper credit has been given to DST inventor George Vernon Hudson. 605 606 Commentary about time in Metlakatla, AK and Resolute, NU has been 607 improved, with a new source for the former. 608 609 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 610 is uninhabited. 611 612 Commentary about permanent Antarctic bases has been updated. 613 614 Several typos have been corrected. (Thanks to Tim Parenti for 615 contributing some of these fixes.) 616 617 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 618 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 619 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 620 (Thanks to a heads-up from Dirkjan Ochtman.) 621 622 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 623 have been removed. These obsolescent US Naval Observatory entries were no 624 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 625 626 627 Release 2014e - 2014-06-12 21:53:52 -0700 628 629 Changes affecting near-future time stamps 630 631 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 632 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 633 switch to standard time at 24:00 the last Thursday before Ramadan, and 634 back to DST at 00:00 the first Friday after Ramadan. 635 636 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 637 to Milamber Space Network.) Guess that from 2015 on Morocco will 638 temporarily switch to standard time at 03:00 the last Saturday before 639 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 640 641 Changes affecting past time stamps 642 643 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 644 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 645 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 646 in 1991. (Thanks to Hank W. for reporting the problems.) 647 648 Changes affecting commentary 649 650 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 651 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 652 removes stale pointers to World Time Explorer and WORLDTIME. 653 654 655 Release 2014d - 2014-05-27 21:34:40 -0700 656 657 Changes affecting code 658 659 zic no longer generates files containing time stamps before the Big Bang. 660 This works around GNOME bug 730332 661 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 662 (Thanks to Leonardo Chiquitto for reporting the bug, and to 663 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 664 665 Changes affecting documentation 666 667 tz-link.htm now mentions GNOME. 668 669 670 Release 2014c - 2014-05-13 07:44:13 -0700 671 672 Changes affecting near-future time stamps 673 674 Egypt observes DST starting 2014-05-15 at 24:00. 675 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 676 Details have not been announced, except that DST will not be observed 677 during Ramadan. Guess that DST will stop during the same Ramadan dates as 678 Morocco, and that Egypt's future spring and fall transitions will be the 679 same as 2010 when it last observed DST, namely April's last Friday at 680 00:00 to September's last Thursday at 23:00 standard time. Also, guess 681 that Ramadan transitions will be at 00:00 standard time. 682 683 Changes affecting code 684 685 zic now generates transitions for minimum time values, eliminating guesswork 686 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 687 688 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 689 690 Changes affecting commentary and documentation 691 692 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 693 694 695 Release 2014b - 2014-03-24 21:28:50 -0700 696 697 Changes affecting near-future time stamps 698 699 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 700 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 701 702 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 703 Bengt-Inge Larsson.) This is currently an approximation; a better version 704 will require the zic and localtime fixes mentioned below, and the plan is 705 to wait for a while until at least the zic fixes propagate. 706 707 Changes affecting code 708 709 'zic' and 'localtime' no longer reject locations needing four transitions 710 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 711 Also, 'zic' avoids some unlikely failures due to integer overflow. 712 713 Changes affecting build procedure 714 715 'make check' now detects Rule lines defined but never used. 716 The NZAQ rules, an instance of this problem, have been removed. 717 718 Changes affecting commentary and documentation 719 720 Fix Tuesday/Thursday typo in description of time in Israel. 721 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 722 723 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 724 to Donald MacQueen.) Instead, the Microsoft Windows Store app 725 library supports them. 726 727 Add comments about Johnston Island time in the 1960s. 728 (Thanks to Lyle McElhaney.) 729 730 Morocco's 2014 DST start will be as predicted. 731 (Thanks to Sebastien Willemijns.) 732 733 734 Release 2014a - 2014-03-07 23:30:29 -0800 735 736 Changes affecting near-future time stamps 737 738 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 739 the heads-up, and to Tim Parenti for simplifying the update.) 740 741 Changes affecting past time stamps 742 743 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 744 (Thanks to Steffen Thorsen.) 745 746 Ukraine switched from Moscow to Eastern European time on 1990-07-01 747 (not 1992-01-01), and observed DST during the entire next winter. 748 (Thanks to Vladimir in Moscow via Alois Treindl.) 749 750 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 751 (Thanks to Avigdor Finkelstein.) 752 753 Changes affecting code 754 755 A uninitialized-storage bug in 'localtime' has been fixed. 756 (Thanks to Logan Chien.) 757 758 Changes affecting the build procedure 759 760 The settings for 'make check_web' now default to Ubuntu 13.10. 761 762 Changes affecting commentary and documentation 763 764 The boundary of the US Pacific time zone is given more accurately. 765 (Thanks to Alan Mintz.) 766 767 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 768 769 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 770 771 Better descriptions of countries with same time zone history as 772 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 773 774 Several changes affect tz-link.htm, the main web page. 775 776 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 777 David Braverman). 778 779 Mention xCal (Internet RFC 6321) and jCal. 780 781 Microsoft has some support for tz database names. 782 783 CLDR data formats include both XML and JSON. 784 785 Mention Maggiolo's map of solar vs standard time. 786 (Thanks to Arthur David Olson.) 787 788 Mention TZ4Net. (Thanks to Matt Johnson.) 789 790 Mention the timezone-olson Haskell package. 791 792 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 793 794 Remove moribund links to daylight-savings-time.info and to 795 Simple Timer + Clocks. 796 797 Update two links. (Thanks to Oscar van Vlijmen.) 798 799 Fix some formatting glitches, e.g., remove random newlines from 800 abbr elements' title attributes. 801 802 803 Release 2013i - 2013-12-17 07:25:23 -0800 804 805 Changes affecting near-future time stamps: 806 807 Jordan switches back to standard time at 00:00 on December 20, 2013. 808 The 2006-2011 transition schedule is planned to resume in 2014. 809 (Thanks to Steffen Thorsen.) 810 811 Changes affecting past time stamps: 812 813 In 2004, Cuba began DST on March 28, not April 4. 814 (Thanks to Steffen Thorsen.) 815 816 Changes affecting code 817 818 The compile-time flag NOSOLAR has been removed, as nowadays the 819 benefit of slightly shrinking runtime table size is outweighed by the 820 cost of disallowing potential future updates that exceed old limits. 821 822 Changes affecting documentation and commentary 823 824 The files solar87, solar88, and solar89 are no longer distributed. 825 They were a negative experiment - that is, a demonstration that 826 tz data can represent solar time only with some difficulty and error. 827 Their presence in the distribution caused confusion, as Riyadh 828 civil time was generally not solar time in those years. 829 830 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 831 832 833 Release 2013h - 2013-10-25 15:32:32 -0700 834 835 Changes affecting current and future time stamps: 836 837 Libya has switched its time zone back to UTC+2 without DST, 838 instead of UTC+1 with DST. (Thanks to Even Scharning.) 839 840 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 841 (Thanks to Gwillim Law.) 842 843 Changes affecting future time stamps: 844 845 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 846 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 847 (Thanks to Steffen Thorsen.) 848 849 Add entries for DST transitions in Morocco in the year 2038. 850 This avoids some year-2038 glitches introduced in 2013g. 851 (Thanks to Yoshito Umaoka for reporting the problem.) 852 853 Changes affecting API 854 855 The 'tzselect' command no longer requires the 'select' command, 856 and should now work with /bin/sh on more platforms. It also works 857 around a bug in BusyBox awk before version 1.21.0. (Thanks to 858 Patrick 'P. J.' McDermott and Alan Barrett.) 859 860 Changes affecting code 861 862 Fix localtime overflow bugs with 32-bit unsigned time_t. 863 864 zdump no longer assumes sscanf returns maximal values on overflow. 865 866 Changes affecting the build procedure 867 868 The builder can specify which programs to use, if any, instead of 869 'ar' and 'ranlib', and libtz.a is now built locally before being 870 installed. (Thanks to Michael Forney.) 871 872 A dependency typo in the 'zdump' rule has been fixed. 873 (Thanks to Andrew Paprocki.) 874 875 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 876 work as specified by POSIX.2-1992 or later; this is portable nowadays. 877 878 'make clean' no longer removes 'leapseconds', since it's 879 host-independent and is part of the distribution. 880 881 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 882 883 Changes affecting documentation and commentary 884 885 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 886 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 887 888 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 889 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 890 longer maintained) and for old advisories. SOFA now does C. 891 892 Release 2013g - 2013-09-30 21:08:26 -0700 893 894 Changes affecting current and near-future time stamps 895 896 Morocco now observes DST from the last Sunday in March to the last 897 Sunday in October, not April to September respectively. (Thanks 898 to Steffen Thorsen.) 899 900 Changes affecting 'zic' 901 902 'zic' now runs on platforms that lack both hard links and symlinks. 903 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 904 Also, fix some bugs on platforms that lack hard links but have symlinks. 905 906 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 907 to predict the far future, fixing a bug introduced in 2013e. 908 909 Changes affecting the build procedure 910 911 The 'leapseconds' file is again put into the tzdata tarball. 912 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 913 Matt Burgess and Ian Abbott.) The timestamps of these and other 914 dependent files in tarballs are adjusted more consistently. 915 916 Changes affecting documentation and commentary 917 918 The README file is now part of the data tarball as well as the code. 919 It now states that files are public domain unless otherwise specified. 920 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 921 Its details about the 1989 release moved to a place of honor near 922 the end of NEWS. 923 924 925 Release 2013f - 2013-09-24 23:37:36 -0700 926 927 Changes affecting near-future time stamps 928 929 Tocantins will very likely not observe DST starting this spring. 930 (Thanks to Steffen Thorsen.) 931 932 Jordan will likely stay at UTC+3 indefinitely, and will not fall 933 back this fall. 934 935 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 936 937 Changes affecting API 938 939 The types of the global variables 'timezone' and 'altzone' (if present) 940 have been changed back to 'long'. This is required for 'timezone' 941 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 942 These variables were originally 'long' in the tz code, but were 943 mistakenly changed to 'time_t' in 1987; nobody reported the 944 incompatibility until now. The difference matters on x32, where 945 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 946 947 Changes affecting the build procedure 948 949 Avoid long strings in leapseconds.awk to work around a mawk bug. 950 (Thanks to Cyril Baurand.) 951 952 Changes affecting documentation and commentary 953 954 New file 'NEWS' that contains release notes like this one. 955 956 Paraguay's law does not specify DST transition time; 00:00 is customary. 957 (Thanks to Waldemar Villamayor-Venialbo.) 958 959 Minor capitalization fixes. 960 961 Changes affecting version-control only 962 963 The experimental GitHub repository now contains annotated and 964 signed tags for recent releases, e.g., '2013e' for Release 2013e. 965 Releases are tagged starting with 2012e; earlier releases were 966 done differently, and tags would either not have a simple name or 967 not exactly match what was released. 968 969 'make set-timestamps' is now simpler and a bit more portable. 970 971 972 Release 2013e - 2013-09-19 23:50:04 -0700 973 974 Changes affecting near-future time stamps 975 976 This year Fiji will start DST on October 27, not October 20. 977 (Thanks to David Wheeler for the heads-up.) For now, guess that 978 Fiji will continue to spring forward the Sunday before the fourth 979 Monday in October. 980 981 Changes affecting current and future time zone abbreviations 982 983 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 984 time zone abbreviations since 1932. (Thanks to George Ziegler, 985 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 986 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 987 Asia/Makassar, and Asia/Pontianak. 988 989 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 990 daylight saving time) for San Luis, Argentina since 2009. 991 992 Changes affecting Godthb time stamps after 2037 if version mismatch 993 994 Allow POSIX-like TZ strings where the transition time's hour can 995 range from -167 through 167, instead of the POSIX-required 0 996 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 997 new Fiji rules. This is a more-compact way to represent 998 far-future time stamps for America/Godthab, America/Santiago, 999 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 1000 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 1001 this change. (Derived from a suggestion by Arthur David Olson.) 1002 1003 Allow POSIX-like TZ strings where daylight saving time is in 1004 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 1005 Argentina Summer Time all year. This supports a more-compact way 1006 to represent the 2013d data for America/Argentina/San_Luis. 1007 Because of the change for San Luis noted above this change does not 1008 affect the current data. (Thanks to Andrew Main (Zefram) for 1009 suggestions that improved this change.) 1010 1011 Where these two TZ changes take effect, there is a minor extension 1012 to the tz file format in that it allows new values for the 1013 embedded TZ-format string, and the tz file format version number 1014 has therefore been increased from 2 to 3 as a precaution. 1015 Version-2-based client code should continue to work as before for 1016 all time stamps before 2038. Existing version-2-based client code 1017 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 1018 files, and typically works in practice even for time stamps after 1019 2037; the only known exception is America/Godthab. 1020 1021 Changes affecting time stamps before 1970 1022 1023 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 1024 some errors before 1947. 1025 1026 Some zones have been turned into links, when they differ from existing 1027 zones only in older data entries that were likely invented or that 1028 differ only in LMT or transitions from LMT. These changes affect 1029 only time stamps before 1943. The affected zones are: 1030 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 1031 America/Grenada, America/Guadeloupe, America/Marigot, 1032 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 1033 America/St_Lucia, America/St_Thomas, America/St_Vincent, 1034 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 1035 confirming that the old Europe/Vaduz zone was wrong and the new 1036 link is better for WWII-era times.) 1037 1038 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 1039 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 1040 from 1890 to 1912. 1041 1042 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 1043 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 1044 to Alois Treindl). 1045 1046 Change the date of the circa-1850 Zurich transition from 1849-09-12 1047 to 1853-07-16, overriding Shanks with data from Messerli about 1048 postal and telegraph time in Switzerland. 1049 1050 Changes affecting time zone abbreviations before 1970 1051 1052 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1053 as Jakarta was called Batavia back then. 1054 1055 Changes affecting API 1056 1057 The 'zic' command now outputs a dummy transition when far-future 1058 data can't be summarized using a TZ string, and uses a 402-year 1059 window rather than a 400-year window. For the current data, this 1060 affects only the Asia/Tehran file. It does not affect any of the 1061 time stamps that this file represents, so zdump outputs the same 1062 information as before. (Thanks to Andrew Main (Zefram).) 1063 1064 The 'date' command has a new '-r' option, which lets you specify 1065 the integer time to display, a la FreeBSD. 1066 1067 The 'tzselect' command has two new options '-c' and '-n', which lets you 1068 select a zone based on latitude and longitude. 1069 1070 The 'zic' command's '-v' option now warns about constructs that 1071 require the new version-3 binary file format. (Thanks to Arthur 1072 David Olson for the suggestion.) 1073 1074 Support for floating-point time_t has been removed. 1075 It was always dicey, and POSIX no longer requires it. 1076 (Thanks to Eric Blake for suggesting to the POSIX committee to 1077 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1078 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1079 bugs and elucidating some of the corners of the old floating-point 1080 implementation.) 1081 1082 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1083 changed back to the old practice of using 'long' to represent UT 1084 offsets. This had been inadvertently and mistakenly changed to 1085 'int_fast32_t'. (Thanks to Christos Zoulas.) 1086 1087 The code avoids undefined behavior on integer overflow in some 1088 more places, including gmtime, localtime, mktime and zdump. 1089 1090 Changes affecting the zdump utility 1091 1092 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1093 "UTC" does not make sense for time stamps that predate the introduction 1094 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1095 for clarifying UT vs UTC.) 1096 1097 Data changes affecting behavior of tzselect and similar programs 1098 1099 Country code BQ is now called the more-common name "Caribbean Netherlands" 1100 rather than the more-official "Bonaire, St Eustatius & Saba". 1101 1102 Remove from zone.tab the names America/Montreal, America/Shiprock, 1103 and Antarctica/South_Pole, as they are equivalent to existing 1104 same-country-code zones for post-1970 time stamps. The data entries for 1105 these names are unchanged, so the names continue to work as before. 1106 1107 Changes affecting code internals 1108 1109 zic -c now runs way faster on 64-bit hosts when given large numbers. 1110 1111 zic now uses vfprintf to avoid allocating and freeing some memory. 1112 1113 tzselect now computes the list of continents from the data, 1114 rather than have it hard-coded. 1115 1116 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1117 1118 Changes affecting the build procedure 1119 1120 The 'leapseconds' file is now generated automatically from a 1121 new file 'leap-seconds.list', which is a copy of 1122 <ftp://time.nist.gov/pub/leap-seconds.list>. 1123 A new source file 'leapseconds.awk' implements this. 1124 The goal is simplification of the future maintenance of 'leapseconds'. 1125 1126 When building the 'posix' or 'right' subdirectories, if the 1127 subdirectory would be a copy of the default subdirectory, it is 1128 now made a symbolic link if that is supported. This saves about 1129 2 MB of file system space. 1130 1131 The links America/Shiprock and Antarctica/South_Pole have been 1132 moved to the 'backward' file. This affects only nondefault builds 1133 that omit 'backward'. 1134 1135 Changes affecting version-control only 1136 1137 .gitignore now ignores 'date'. 1138 1139 Changes affecting documentation and commentary 1140 1141 Changes to the 'tzfile' man page 1142 1143 It now mentions that the binary file format may be extended in 1144 future versions by appending data. 1145 1146 It now refers to the 'zdump' and 'zic' man pages. 1147 1148 Changes to the 'zic' man page 1149 1150 It lists conditions that elicit a warning with '-v'. 1151 1152 It says that the behavior is unspecified when duplicate names 1153 are given, or if the source of one link is the target of another. 1154 1155 Its examples are updated to match the latest data. 1156 1157 The definition of white space has been clarified slightly. 1158 (Thanks to Michael Deckers.) 1159 1160 Changes to the 'Theory' file 1161 1162 There is a new section about the accuracy of the tz database, 1163 describing the many ways that errors can creep in, and 1164 explaining why so many of the pre-1970 time stamps are wrong or 1165 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1166 Wollman for discussions that contributed to this). 1167 1168 The 'Theory' file describes LMT better (this follows a 1169 suggestion by Guy Harris). 1170 1171 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1172 1173 It's mentioned that excluding 'backward' should not affect the 1174 other data, and it suggests at least one zone.tab name per 1175 inhabited country (thanks to Stephen Colebourne). 1176 1177 Some longstanding restrictions on names are documented, e.g., 1178 'America/New_York' precludes 'America/New_York/Bronx'. 1179 1180 It gives more reasons for the 1970 cutoff. 1181 1182 It now mentions which time_t variants are supported, such as 1183 signed integer time_t. (Thanks to Paul Goyette for reporting 1184 typos in an experimental version of this change.) 1185 1186 (Thanks to Philip Newton for correcting typos in these changes.) 1187 1188 Documentation and commentary is more careful to distinguish UT in 1189 general from UTC in particular. (Thanks to Steve Allen.) 1190 1191 Add a better source for the Zurich 1894 transition. 1192 (Thanks to Pierre-Yves Berger.) 1193 1194 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1195 1196 1197 Release 2013d - 2013-07-05 07:38:01 -0700 1198 1199 Changes affecting future time stamps: 1200 1201 Morocco's midsummer transitions this year are July 7 and August 10, 1202 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1203 1204 Israel now falls back on the last Sunday of October. 1205 (Thanks to Ephraim Silverberg.) 1206 1207 Changes affecting past time stamps: 1208 1209 Specify Jerusalem's location more precisely; this changes the pre-1880 1210 times by 2 s. 1211 1212 Changing affecting metadata only: 1213 1214 Fix typos in the entries for country codes BQ and SX. 1215 1216 Changes affecting code: 1217 1218 Rework the code to fix a bug with handling Australia/Macquarie on 1219 32-bit hosts (thanks to Arthur David Olson). 1220 1221 Port to platforms like NetBSD, where time_t can be wider than long. 1222 1223 Add support for testing time_t types other than the system's. 1224 Run 'make check_time_t_alternatives' to try this out. 1225 Currently, the tests fail for unsigned time_t; 1226 this should get fixed at some point. 1227 1228 Changes affecting documentation and commentary: 1229 1230 Deemphasize the significance of national borders. 1231 1232 Update the zdump man page. 1233 1234 Remove obsolete NOID comment (thanks to Denis Excoffier). 1235 1236 Update several URLs and comments in the web pages. 1237 1238 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1239 1240 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1241 1242 1243 Release 2013c - 2013-04-19 16:17:40 -0700 1244 1245 Changes affecting current and future time stamps: 1246 1247 Palestine observed DST starting March 29, 2013. (Thanks to 1248 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1249 with the predicted rules being the last Thursday in March at 24:00 1250 to the first Friday on or after September 21 at 01:00. 1251 1252 Assume that the recent change to Paraguay's DST rules is permanent, 1253 by moving the end of DST to the 4th Sunday in March every year. 1254 (Thanks to Carlos Ral Perasso.) 1255 1256 Changes affecting past time stamps: 1257 1258 Fix some historical data for Palestine to agree with that of 1259 timeanddate.com, as follows: 1260 1261 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1262 00:00 Apr 1. 1263 1264 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1265 02:00. 1266 1267 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1268 1269 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1270 1271 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1272 1273 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1274 1275 Fix times of habitation for Macquarie to agree with the Tasmania 1276 Parks & Wildlife Service history, which indicates that permanent 1277 habitation was 1899-1919 and 1948 on. 1278 1279 Changing affecting metadata only: 1280 1281 Macquarie Island is politically part of Australia, not Antarctica. 1282 (Thanks to Tobias Conradi.) 1283 1284 Sort Macquarie more-consistently with other parts of Australia. 1285 (Thanks to Tim Parenti.) 1286 1287 1288 Release 2013b - 2013-03-10 22:33:40 -0700 1289 1290 Changes affecting current and future time stamps: 1291 1292 Haiti uses US daylight-saving rules this year, and presumably future years. 1293 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1294 1295 Paraguay will end DST on March 24 this year. 1296 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1297 1298 Morocco does not observe DST during Ramadan; 1299 try to predict Ramadan in Morocco as best we can. 1300 (Thanks to Erik Homoet for the heads-up.) 1301 1302 Changes affecting commentary: 1303 1304 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1305 Update URL for Solaris. Mention Internet RFC 6557. 1306 Update Internet RFCs 2445->5545, 2822->5322. 1307 Switch from FTP to HTTP for Internet RFCs. 1308 1309 1310 Release 2013a - 2013-02-27 09:20:35 -0800 1311 1312 Change affecting binary data format: 1313 1314 The zone offset at the end of version-2-format zone files is now 1315 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1316 1317 Changes affecting current and future time stamps: 1318 1319 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1320 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1321 (Thanks to Steffen Thorsen and Robert Elz.) 1322 1323 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1324 (Thanks to Tobias Conradi and Arthur David Olson.) 1325 1326 Many changes affect historical time stamps before 1940. 1327 These were deduced from: Milne J. Civil time. Geogr J. 1899 1328 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1329 1330 Changes affecting the code: 1331 1332 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1333 the data). (Thanks to Arthur David Olson.) 1334 1335 Fix localtime bug when time_t is unsigned and data files were generated 1336 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1337 to Arthur David Olson for fixing.) 1338 1339 Allow the email address for bug reports to be set by the packager. 1340 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 1341 1342 Update HTML checking to be compatible with Ubuntu 12.10. 1343 1344 Check that files are a safe subset of ASCII. At some point we may 1345 relax this requirement to a safe subset of UTF-8. Without the 1346 check, some non-UTF-8 encodings were leaking into the distribution. 1347 1348 Commentary changes: 1349 1350 Restore a comment about copyright notices that was inadvertently deleted. 1351 (Thanks to Arthur David Olson.) 1352 1353 Improve the commentary about which districts observe what times 1354 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1355 1356 Add web page links to tz.js. 1357 1358 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1359 1360 1361 Release 2012j - 2012-11-12 18:34:49 -0800 1362 1363 Libya moved to CET this weekend, but with DST planned next year. 1364 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1365 1366 Signatures now have the extension .asc, not .sign, as that's more 1367 standard. (Thanks to Phil Pennock.) 1368 1369 The output of 'zdump --version', and of 'zic --version', now 1370 uses a format that is more typical for --version. 1371 (Thanks to Joseph S. Myers.) 1372 1373 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1374 now uses tz (a] iana.org rather than the old elsie address. 1375 1376 zic -v now complains about abbreviations that are less than 3 1377 or more than 6 characters, as per Posix. Formerly, it checked 1378 for abbreviations that were more than 3. 1379 1380 'make public' no longer puts its temporary directory under /tmp, 1381 and uses the just-built zic rather than the system zic. 1382 1383 Various fixes to documentation and commentary. 1384 1385 1386 Release 2012i - 2012-11-03 12:57:09 -0700 1387 1388 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1389 1390 Linker flags can now be specified via LDFLAGS. 1391 AWK now defaults to 'awk', not 'nawk'. 1392 The shell in tzselect now defaults to /bin/bash, but this can 1393 be overridden by specifying KSHELL. 1394 The main web page now mentions the unofficial GitHub repository. 1395 (Thanks to Mike Frysinger.) 1396 1397 Tarball signatures can now be built by running 'make signatures'. 1398 There are also new makefile rules 'tarballs', 'check_public', and 1399 separate makefile rules for each tarball and signature file. 1400 A few makefile rules are now more portable to strict POSIX. 1401 1402 The main web page now lists the canonical IANA URL. 1403 1404 1405 Release 2012h - 2012-10-26 22:49:10 -0700 1406 1407 Bahia no longer has DST. (Thanks to Kelley Cook.) 1408 1409 Tocantins has DST. (Thanks to Rodrigo Severo.) 1410 1411 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1412 1413 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1414 1415 Web page updates. 1416 1417 More C modernization, except that at Arthur David Olson's suggestion 1418 the instances of 'register' were kept. 1419 1420 1421 Release 2012g - 2012-10-17 20:59:45 -0700 1422 1423 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1424 1425 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1426 1427 Assume C89. 1428 1429 To attack the version-number problem, this release ships the file 1430 'Makefile' (which contains the release number) in both the tzcode and 1431 the tzdata tarballs. The two Makefiles are identical, and should be 1432 identical in any matching pair of tarballs, so it shouldn't matter 1433 which order you extract the tarballs. Perhaps we can come up with a 1434 better version-number scheme at some point; this scheme does have the 1435 virtue of not adding more files. 1436 1437 1438 Release 2012f - 2012-09-12 23:17:03 -0700 1439 1440 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1441 20 this year. (Thanks to Steffen Thorsen.) 1442 1443 1444 Release 2012e - 2012-08-02 20:44:55 -0700 1445 1446 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1447 (Thanks to Steffen Thorsen.) 1448 1449 * Use a single version number for both code and data. 1450 1451 * .gitignore: New file. 1452 1453 * Remove trailing white space. 1454 1455 1456 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1457 1458 Changes for Morocco's time stamps, which take effect in a couple of 1459 hours, along with infrastructure changes to accommodate how the tz 1460 code and data are released on IANA. 1461 1462 1463 Release data2012c - 2012-03-27 12:17:25 -0400 1464 1465 africa 1466 Summer time changes for Morocco (to start late April 2012) 1467 1468 asia 1469 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1470 1471 northamerica 1472 Haiti following US/Canada rules for 2012 (and we're assuming, 1473 for now anyway, for the future). 1474 1475 1476 Release 2012b - 2012-03-02 12:29:15 +0700 1477 1478 There is just one change to tzcode2012b (compared with 2012a): 1479 the Makefile that was accidentally included with 2012a has been 1480 replaced with the version that should have been there, which is 1481 identical with the previous version (from tzcode2011i). 1482 1483 There are just two changes in tzdata2012b compared with 2012a. 1484 1485 Most significantly, summer time in Cuba has been delayed 3 weeks 1486 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1487 date, as listed in 2012a) is just a little over a week away, this 1488 change is urgent. 1489 1490 Less importantly, an excess tab in one of the changes in zone.tab 1491 in 2012a has been removed. 1492 1493 1494 Release 2012a - 2012-03-01 18:28:10 +0700 1495 1496 The changes in tzcode2012a (compared to the previous version, 2011i) 1497 are entirely to the README and tz-art.htm and tz-link.htm files, if 1498 none of those concern you, you can ignore the code update. The changes 1499 reflect the changed addresses for the mailing list and the code and 1500 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1501 has been added to tz-link.htm). 1502 1503 In tzdata2012a (compared to the previous release, which was 2011n) 1504 the major changes are: 1505 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1506 Falkland Islands onto permanent summer time (we're assuming for the 1507 foreseeable future, though 2012 is all we're fairly certain of.) 1508 Armenia has abolished Summer Time. 1509 Tokelau jumped the International Date Line back last December 1510 (just the same as their near neighbour, Samoa). 1511 America/Creston is a new zone for a small area of British Columbia 1512 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1513 1514 Other minor changes are: 1515 Corrections to 1918 Canadian summer time end dates. 1516 Updated URL for UK time zone history (in comments) 1517 A few typos in Le Corre's list of free French place names (comments) 1518 1519 1520 Release data2011n - 2011-10-30 14:57:54 +0700 1521 1522 There are three changes of note - most urgently, Cuba (America/Havana) 1523 has extended summer time by two weeks, now to end on Nov 13, rather than 1524 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1525 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1526 all, and consequently that zone has been removed (again) and reinstated 1527 in the "backward" file as a link to Europe/Chisinau. And third, the 1528 end date for Fiji's summer time this summer was moved forward from the 1529 earlier planned Feb 26, to Jan 22. 1530 1531 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1532 (and the incorrect syntax that was in the 2011m version of that file 1533 is so fixed - it would have been fixed in a different way had this 1534 change not happened - that's the "missing" sccs version id). 1535 1536 1537 Release data2011m - 2011-10-24 21:42:16 +0700 1538 1539 In particular, the typos in comments in the data (2011-11-17 should have 1540 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1541 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1542 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 1543 Tim Parenti, and also Denys Gavrysh) 1544 1545 In addition, I added Europe/Tiraspol to zone.tab. 1546 1547 This time, all the files have new version numbers... (including the files 1548 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 1549 version numbers there...) 1550 1551 1552 Release data2011l - 2011-10-10 11:15:43 +0700 1553 1554 There are just 2 changes that cause different generated tzdata files from 1555 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 1556 is included, but commented out. Compared with the diff I sent out last week, 1557 this version also includes attributions for the sources for the changes 1558 (in much the same format as ado used, but the html tags have not been 1559 checked, verified, or used in any way at all, so if there are errors there, 1560 please let me know.) 1561 1562 1563 Release data2011k - 2011-09-20 17:54:03 -0400 1564 1565 [not summarized] 1566 1567 1568 Release data2011j - 2011-09-12 09:22:49 -0400 1569 1570 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 1571 Tanzania); there are also two spelling corrections to comments in 1572 the australasia file (with thanks to Christos Zoulas). 1573 1574 1575 Release 2011i - 2011-08-29 05:56:32 -0400 1576 1577 [not summarized] 1578 1579 1580 Release data2011h - 2011-06-15 18:41:48 -0400 1581 1582 Russia and Curaao changes 1583 1584 1585 Release 2011g - 2011-04-25 09:07:22 -0400 1586 1587 update the rules for Egypt to reflect its abandonment of DST this year 1588 1589 1590 Release 2011f - 2011-04-06 17:14:53 -0400 1591 1592 [not summarized] 1593 1594 1595 Release 2011e - 2011-03-31 16:04:38 -0400 1596 1597 Morocco, Chile, and tz-link changes 1598 1599 1600 Release 2011d - 2011-03-14 09:18:01 -0400 1601 1602 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 1603 1604 1605 Release 2011c - 2011-03-07 09:30:09 -0500 1606 1607 These do affect current time stamps in Chile and Annette Island, Canada. 1608 1609 1610 Release 2011b - 2011-02-07 08:44:50 -0500 1611 1612 [not summarized] 1613 1614 1615 Release 2011a - 2011-01-24 10:30:16 -0500 1616 1617 [not summarized] 1618 1619 1620 Release data2010o - 2010-11-01 09:18:23 -0400 1621 1622 change to the end of DST in Fiji in 2011 1623 1624 1625 Release 2010n - 2010-10-25 08:19:17 -0400 1626 1627 [not summarized] 1628 1629 1630 Release 2010m - 2010-09-27 09:24:48 -0400 1631 1632 Hong Kong, Vostok, and zic.c changes 1633 1634 1635 Release 2010l - 2010-08-16 06:57:25 -0400 1636 1637 [not summarized] 1638 1639 1640 Release 2010k - 2010-07-26 10:42:27 -0400 1641 1642 [not summarized] 1643 1644 1645 Release 2010j - 2010-05-10 09:07:48 -0400 1646 1647 changes for Baha de Banderas and for version naming 1648 1649 1650 Release data2010i - 2010-04-16 18:50:45 -0400 1651 1652 the end of DST in Morocco on 2010-08-08 1653 1654 1655 Release data2010h - 2010-04-05 09:58:56 -0400 1656 1657 [not summarized] 1658 1659 1660 Release data2010g - 2010-03-24 11:14:53 -0400 1661 1662 [not summarized] 1663 1664 1665 Release 2010f - 2010-03-22 09:45:46 -0400 1666 1667 [not summarized] 1668 1669 1670 Release data2010e - 2010-03-08 14:24:27 -0500 1671 1672 corrects the Dhaka bug found by Danvin Ruangchan 1673 1674 1675 Release data2010d - 2010-03-06 07:26:01 -0500 1676 1677 [not summarized] 1678 1679 1680 Release 2010c - 2010-03-01 09:20:58 -0500 1681 1682 changes including KRE's suggestion for earlier initialization of 1683 "goahead" and "goback" structure elements 1684 1685 1686 Release code2010a - 2010-02-16 10:40:04 -0500 1687 1688 [not summarized] 1689 1690 1691 Release data2010b - 2010-01-20 12:37:01 -0500 1692 1693 Mexico changes 1694 1695 1696 Release data2010a - 2010-01-18 08:30:04 -0500 1697 1698 changes to Dhaka 1699 1700 1701 Release data2009u - 2009-12-26 08:32:28 -0500 1702 1703 changes to DST in Bangladesh 1704 1705 1706 Release 2009t - 2009-12-21 13:24:27 -0500 1707 1708 [not summarized] 1709 1710 1711 Release data2009s - 2009-11-14 10:26:32 -0500 1712 1713 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 1714 1715 1716 Release 2009r - 2009-11-09 10:10:31 -0500 1717 1718 "antarctica" and "tz-link.htm" changes 1719 1720 1721 Release 2009q - 2009-11-02 09:12:40 -0500 1722 1723 with two corrections as reported by Eric Muller and Philip Newton 1724 1725 1726 Release data2009p - 2009-10-23 15:05:27 -0400 1727 1728 Argentina (including San Luis) changes (with the correction from 1729 Mariano Absatz) 1730 1731 1732 Release data2009o - 2009-10-14 16:49:38 -0400 1733 1734 Samoa (commentary only), Pakistan, and Bangladesh changes 1735 1736 1737 Release data2009n - 2009-09-22 15:13:38 -0400 1738 1739 added commentary for Argentina and a change to the end of DST in 1740 2009 in Pakistan 1741 1742 1743 Release data2009m - 2009-09-03 10:23:43 -0400 1744 1745 Samoa and Palestine changes 1746 1747 1748 Release data2009l - 2009-08-14 09:13:07 -0400 1749 1750 Samoa (comments only) and Egypt 1751 1752 1753 Release 2009k - 2009-07-20 09:46:08 -0400 1754 1755 [not summarized] 1756 1757 1758 Release data2009j - 2009-06-15 06:43:59 -0400 1759 1760 Bangladesh change (with a short turnaround since the DST change is 1761 impending) 1762 1763 1764 Release 2009i - 2009-06-08 09:21:22 -0400 1765 1766 updating for DST in Bangladesh this year 1767 1768 1769 Release 2009h - 2009-05-26 09:19:14 -0400 1770 1771 [not summarized] 1772 1773 1774 Release data2009g - 2009-04-20 16:34:07 -0400 1775 1776 Cairo 1777 1778 1779 Release data2009f - 2009-04-10 11:00:52 -0400 1780 1781 correct DST in Pakistan 1782 1783 1784 Release 2009e - 2009-04-06 09:08:11 -0400 1785 1786 [not summarized] 1787 1788 1789 Release 2009d - 2009-03-23 09:38:12 -0400 1790 1791 Morocco, Tunisia, Argentina, and American Astronomical Society changes 1792 1793 1794 Release data2009c - 2009-03-16 09:47:51 -0400 1795 1796 change to the start of Cuban DST 1797 1798 1799 Release 2009b - 2009-02-09 11:15:22 -0500 1800 1801 [not summarized] 1802 1803 1804 Release 2009a - 2009-01-21 10:09:39 -0500 1805 1806 [not summarized] 1807 1808 1809 Release data2008i - 2008-10-21 12:10:25 -0400 1810 1811 southamerica and zone.tab files, with Argentina DST rule changes and 1812 United States zone reordering and recommenting 1813 1814 1815 Release 2008h - 2008-10-13 07:33:56 -0400 1816 1817 [not summarized] 1818 1819 1820 Release 2008g - 2008-10-06 09:03:18 -0400 1821 1822 Fix a broken HTML anchor and update Brazil's DST transitions; 1823 there's also a slight reordering of information in tz-art.htm. 1824 1825 1826 Release data2008f - 2008-09-09 22:33:26 -0400 1827 1828 [not summarized] 1829 1830 1831 Release 2008e - 2008-07-28 14:11:17 -0400 1832 1833 changes by Arthur David Olson and Jesper Nrgaard Welen 1834 1835 1836 Release data2008d - 2008-07-07 09:51:38 -0400 1837 1838 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 1839 1840 1841 Release data2008c - 2008-05-19 17:48:03 -0400 1842 1843 Pakistan, Morocco, and Mongolia 1844 1845 1846 Release data2008b - 2008-03-24 08:30:59 -0400 1847 1848 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 1849 link provided 1850 1851 1852 Release 2008a - 2008-03-08 05:42:16 -0500 1853 1854 [not summarized] 1855 1856 1857 Release 2007k - 2007-12-31 10:25:22 -0500 1858 1859 most importantly, changes to the "southamerica" file based on 1860 Argentina's readoption of daylight saving time 1861 1862 1863 Release 2007j - 2007-12-03 09:51:01 -0500 1864 1865 1. eliminate the "P" (parameter) macro; 1866 1867 2. the "noncontroversial" changes circulated on the time zone 1868 mailing list (less the changes to "logwtmp.c"); 1869 1870 3. eliminate "too many transition" errors when "min" is used in time 1871 zone rules; 1872 1873 4. changes by Paul Eggert (including updated information for Venezuela). 1874 1875 1876 Release data2007i - 2007-10-30 10:28:11 -0400 1877 1878 changes for Cuba and Syria 1879 1880 1881 Release 2007h - 2007-10-01 10:05:51 -0400 1882 1883 changes by Paul Eggert, as well as an updated link to the ICU 1884 project in tz-link.htm 1885 1886 1887 Release 2007g - 2007-08-20 10:47:59 -0400 1888 1889 changes by Paul Eggert 1890 1891 The "leapseconds" file has been updated to incorporate the most 1892 recent International Earth Rotation and Reference Systems Service 1893 (IERS) bulletin. 1894 1895 There's an addition to tz-art.htm regarding the television show "Medium". 1896 1897 1898 Release 2007f - 2007-05-07 10:46:46 -0400 1899 1900 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 1901 Zealand) 1902 1903 changes to zic.c to allow hour values greater than 24 (along with 1904 Paul's improved time value overflow checking) 1905 1906 1907 Release 2007e - 2007-04-02 10:11:52 -0400 1908 1909 Syria and Honduras changes by Paul Eggert 1910 1911 zic.c variable renaming changes by Arthur David Olson 1912 1913 1914 Release 2007d - 2007-03-20 08:48:30 -0400 1915 1916 changes by Paul Eggert 1917 1918 the elimination of white space at the ends of lines 1919 1920 1921 Release 2007c - 2007-02-26 09:09:37 -0500 1922 1923 changes by Paul Eggert 1924 1925 1926 Release 2007b - 2007-02-12 09:34:20 -0500 1927 1928 Paul Eggert's proposed change to the quotation handling logic in zic.c. 1929 1930 changes to the commentary in "leapseconds" reflecting the IERS 1931 announcement that there is to be no positive leap second at the end 1932 of June 2007. 1933 1934 1935 Release 2007a - 2007-01-08 12:28:29 -0500 1936 1937 changes by Paul Eggert 1938 1939 Derick Rethan's Asmara change 1940 1941 Oscar van Vlijmen's Easter Island local mean time change 1942 1943 symbolic link changes 1944 1945 1946 Release 2006p - 2006-11-27 08:54:27 -0500 1947 1948 changes by Paul Eggert 1949 1950 1951 Release 2006o - 2006-11-06 09:18:07 -0500 1952 1953 changes by Paul Eggert 1954 1955 1956 Release 2006n - 2006-10-10 11:32:06 -0400 1957 1958 changes by Paul Eggert 1959 1960 1961 Release 2006m - 2006-10-02 15:32:35 -0400 1962 1963 changes for Uruguay, Palestine, and Egypt by Paul Eggert 1964 1965 (minimalist) changes to zic.8 to clarify "until" information 1966 1967 1968 Release data2006l - 2006-09-18 12:58:11 -0400 1969 1970 Paul's best-effort work on this coming weekend's Egypt time change 1971 1972 1973 Release 2006k - 2006-08-28 12:19:09 -0400 1974 1975 changes by Paul Eggert 1976 1977 1978 Release 2006j - 2006-08-21 09:56:32 -0400 1979 1980 changes by Paul Eggert 1981 1982 1983 Release code2006i - 2006-08-07 12:30:55 -0400 1984 1985 localtime.c fixes 1986 1987 Ken Pizzini's conversion script 1988 1989 1990 Release code2006h - 2006-07-24 09:19:37 -0400 1991 1992 adds public domain notices to four files 1993 1994 includes a fix for transition times being off by a second 1995 1996 adds a new recording to the "arts" file (information courtesy Colin Bowern) 1997 1998 1999 Release 2006g - 2006-05-08 17:18:09 -0400 2000 2001 northamerica changes by Paul Eggert 2002 2003 2004 Release 2006f - 2006-05-01 11:46:00 -0400 2005 2006 a missing version number problem is fixed (with thanks to Bradley 2007 White for catching the problem) 2008 2009 2010 Release 2006d - 2006-04-17 14:33:43 -0400 2011 2012 changes by Paul Eggert 2013 2014 added new items to tz-arts.htm that were found by Paul 2015 2016 2017 Release 2006c - 2006-04-03 10:09:32 -0400 2018 2019 two sets of data changes by Paul Eggert 2020 2021 a fencepost error fix in zic.c 2022 2023 changes to zic.c and the "europe" file to minimize differences 2024 between output produced by the old 32-bit zic and the new 64-bit 2025 version 2026 2027 2028 Release 2006b - 2006-02-20 10:08:18 -0500 2029 [tz32code2006b + tz64code2006b + tzdata2006b] 2030 2031 64-bit code 2032 2033 All SCCS IDs were bumped to "8.1" for this release. 2034 2035 2036 Release 2006a - 2006-01-30 08:59:31 -0500 2037 2038 changes by Paul Eggert (in particular, Indiana time zone moves) 2039 2040 an addition to the zic manual page to describe how special-case 2041 transitions are handled 2042 2043 2044 Release 2005r - 2005-12-27 09:27:13 -0500 2045 2046 Canadian changes by Paul Eggert 2047 2048 They also add "<pre>" directives to time zone data files and reflect 2049 changes to warning message logic in "zdump.c" (but with calls to 2050 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2051 2052 2053 Release 2005q - 2005-12-13 09:17:09 -0500 2054 2055 Nothing earth-shaking here: 2056 1. Electronic mail addresses have been removed. 2057 2. Casts of the return value of exit have been removed. 2058 3. Casts of the argument of is.* macros have been added. 2059 4. Indentation in one section of zic.c has been fixed. 2060 5. References to dead URLs in the data files have been dealt with. 2061 2062 2063 Release 2005p - 2005-12-05 10:30:53 -0500 2064 2065 "systemv", "tz-link.htm", and "zdump.c" changes 2066 (less the casts of arguments to the is* macros) 2067 2068 2069 Release 2005o - 2005-11-28 10:55:26 -0500 2070 2071 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2072 2073 zdump.c lint fixes by Arthur David Olson 2074 2075 2076 Release 2005n - 2005-10-03 09:44:09 -0400 2077 2078 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2079 et al. changes) 2080 2081 2082 Release 2005m - 2005-08-29 12:15:40 -0400 2083 2084 changes by Paul Eggert (with a small tweak to the tz-art change) 2085 2086 a declaration of an unused variable has been removed from zdump.c 2087 2088 2089 Release 2005l - 2005-08-22 12:06:39 -0400 2090 2091 changes by Paul Eggert 2092 2093 overflow/underflow checks by Arthur David Olson, minus changes to 2094 the "Theory" file about the pending addition of 64-bit data (I grow 2095 less confident of the changes being accepted with each passing day, 2096 and the changes no longer increase the data files nine-fold--there's 2097 less than a doubling in size by my local Sun's reckoning) 2098 2099 2100 Release 2005k - 2005-07-14 14:14:24 -0400 2101 2102 The "leapseconds" file has been edited to reflect the recently 2103 announced leap second at the end of 2005. 2104 2105 I've also deleted electronic mail addresses from the files as an 2106 anti-spam measure. 2107 2108 2109 Release 2005j - 2005-06-13 14:34:13 -0400 2110 2111 These reflect changes to limit the length of time zone abbreviations 2112 and the characters used in those abbreviations. 2113 2114 There are also changes to handle POSIX-style "quoted" time zone 2115 environment variables. 2116 2117 The changes were circulated on the time zone mailing list; the only 2118 change since then was the removal of a couple of minimum-length of 2119 abbreviation checks. 2120 2121 2122 Release data2005i - 2005-04-21 15:04:16 -0400 2123 2124 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2125 2126 2127 Release 2005h - 2005-04-04 11:24:47 -0400 2128 2129 changes by Paul Eggert 2130 2131 minor changes to Makefile and zdump.c to produce more useful output 2132 when doing a "make typecheck" 2133 2134 2135 Release 2005g - 2005-03-14 10:11:21 -0500 2136 2137 changes by Paul Eggert (a change to current DST rules in Uruguay and 2138 an update to a link to time zone software) 2139 2140 2141 Release 2005f - 2005-03-01 08:45:32 -0500 2142 2143 data and documentation changes by Paul Eggert 2144 2145 2146 Release 2005e - 2005-02-10 15:59:44 -0500 2147 2148 [not summarized] 2149 2150 2151 Release code2005d - 2005-01-31 09:21:47 -0500 2152 2153 make zic complain about links to links if the -v flag is used 2154 2155 have "make public" do more code checking 2156 2157 add an include to "localtime.c" for the benefit of gcc systems 2158 2159 2160 Release 2005c - 2005-01-17 18:36:29 -0500 2161 2162 get better results when mktime runs on a system where time_t is double 2163 2164 changes to the data files (most importantly to Paraguay) 2165 2166 2167 Release 2005b - 2005-01-10 09:19:54 -0500 2168 2169 Get localtime and gmtime working on systems with exotic time_t types. 2170 2171 Update the leap second commentary in the "leapseconds" file. 2172 2173 2174 Release 2005a - 2005-01-01 13:13:44 -0500 2175 2176 [not summarized] 2177 2178 2179 Release code2004i - 2004-12-14 13:42:58 -0500 2180 2181 Deal with systems where time_t is unsigned. 2182 2183 2184 Release code2004h - 2004-12-07 11:40:18 -0500 2185 2186 64-bit-time_t changes 2187 2188 2189 Release 2004g - 2004-11-02 09:06:01 -0500 2190 2191 update to Cuba (taking effect this weekend) 2192 2193 other changes by Paul Eggert 2194 2195 correction of the spelling of Oslo 2196 2197 changed versions of difftime.c and private.h 2198 2199 2200 Release code2004f - 2004-10-21 10:25:22 -0400 2201 2202 Cope with wide-ranging tm_year values. 2203 2204 2205 Release 2004e - 2004-10-11 14:47:21 -0400 2206 2207 Brazil/Argentina/Israel changes by Paul Eggert 2208 2209 changes to tz-link.htm by Paul 2210 2211 one small fix to Makefile 2212 2213 2214 Release 2004d - 2004-09-22 08:27:29 -0400 2215 2216 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2217 2218 2219 Release 2004c - 2004-08-11 12:06:26 -0400 2220 2221 asctime-related changes 2222 2223 (variants of) some of the documentation changes suggested by Paul Eggert 2224 2225 2226 Release 2004b - 2004-07-19 14:33:35 -0400 2227 2228 data changes by Paul Eggert - most importantly, updates for Argentina 2229 2230 2231 Release 2004a - 2004-05-27 12:00:47 -0400 2232 2233 changes by Paul Eggert 2234 2235 Handle DST transitions that occur at the end of a month in some 2236 years but at the start of the following month in other years. 2237 2238 Add a copy of the correspondence that's the basis for claims about 2239 DST in the Navajo Nation. 2240 2241 2242 Release 2003e - 2003-12-15 09:36:47 -0500 2243 2244 changes by Arthur David Olson (primarily code changes) 2245 2246 changes by Paul Eggert (primarily data changes) 2247 2248 minor changes to "Makefile" and "northamerica" (in the latter case, 2249 optimization of the "Toronto" rules) 2250 2251 2252 Release 2003d - 2003-10-06 09:34:44 -0400 2253 2254 changes by Paul Eggert 2255 2256 2257 Release 2003c - 2003-09-16 10:47:05 -0400 2258 2259 Fix bad returns in zic.c's inleap function. 2260 Thanks to Bradley White for catching the problem! 2261 2262 2263 Release 2003b - 2003-09-16 07:13:44 -0400 2264 2265 Add a "--version" option (and documentation) to the zic and zdump commands. 2266 2267 changes to overflow/underflow checking in zic 2268 2269 a localtime typo fix. 2270 2271 Update the leapseconds and tz-art.htm files. 2272 2273 2274 Release 2003a - 2003-03-24 09:30:54 -0500 2275 2276 changes by Paul Eggert 2277 2278 a few additions and modifications to the tz-art.htm file 2279 2280 2281 Release 2002d - 2002-10-15 13:12:42 -0400 2282 2283 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2284 2285 There's also a new time zone quote in "tz-art.htm". 2286 2287 2288 Release 2002c - 2002-04-04 11:55:20 -0500 2289 2290 changes by Paul Eggert 2291 2292 Change zic.c to avoid creating symlinks to files that don't exist. 2293 2294 2295 Release 2002b - 2002-01-28 12:56:03 -0500 2296 2297 [These change notes are for Release 2002a, which was corrupted. 2298 2002b was a corrected version of 2002a.] 2299 2300 changes by Paul Eggert 2301 2302 Update the "leapseconds" file to note that there'll be no leap 2303 second at the end of June, 2002. 2304 2305 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2306 2307 Change to "difftime.c" to avoid sizeof problems. 2308 2309 2310 Release 2001d - 2001-10-09 13:31:32 -0400 2311 2312 changes by Paul Eggert 2313 2314 2315 Release 2001c - 2001-06-05 13:59:55 -0400 2316 2317 changes by Paul Eggert and Andrew Brown 2318 2319 2320 Release 2001b - 2001-04-05 16:44:38 -0400 2321 2322 changes by Paul Eggert (modulo jnorgard's typo fix) 2323 2324 tz-art.htm has been HTMLified. 2325 2326 2327 Release 2001a - 2001-03-13 12:57:44 -0500 2328 2329 changes by Paul Eggert 2330 2331 An addition to the "leapseconds" file: comments with the text of the 2332 latest IERS leap second notice. 2333 2334 Trailing white space has been removed from data file lines, and 2335 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2336 converted to tabs. 2337 2338 2339 Release 2000h - 2000-12-14 15:33:38 -0500 2340 2341 changes by Paul Eggert 2342 2343 one typo fix in the "art" file 2344 2345 With providence, this is the last update of the millennium. 2346 2347 2348 Release 2000g - 2000-10-10 11:35:22 -0400 2349 2350 changes by Paul Eggert 2351 2352 correction of John Mackin's name submitted by Robert Elz 2353 2354 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2355 Emmy Awards broadcast. 2356 2357 2358 Release 2000f - 2000-08-10 09:31:58 -0400 2359 2360 changes by Paul Eggert 2361 2362 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2363 2364 Error checking and messages in the "yearistype" script have been 2365 improved. 2366 2367 2368 Release 2000e - 2000-07-31 09:27:54 -0400 2369 2370 data changes by Paul Eggert 2371 2372 a change to the default value of the defined constant HAVE_STRERROR 2373 2374 the addition of a Dave Barry quote on DST to the tz-arts file 2375 2376 2377 Release 2000d - 2000-04-20 15:43:04 -0400 2378 2379 changes to the documentation and code of strftime for C99 conformance 2380 2381 a bug fix for date.c 2382 2383 These are based on (though modified from) changes by Paul Eggert. 2384 2385 2386 Release 2000c - 2000-03-04 10:31:43 -0500 2387 2388 changes by Paul Eggert 2389 2390 2391 Release 2000b - 2000-02-21 12:16:29 -0500 2392 2393 changes by Paul Eggert and Joseph Myers 2394 2395 modest tweaks to the tz-art.htm and tz-link.htm files 2396 2397 2398 Release 2000a - 2000-01-18 09:21:26 -0500 2399 2400 changes by Paul Eggert 2401 2402 The two hypertext documents have also been renamed. 2403 2404 2405 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2406 2407 Paul Eggert's changes 2408 2409 additions to the "zic" manual page and the "Arts.htm" file 2410 2411 2412 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2413 2414 [not summarized] 2415 2416 2417 Release data1999h - 1999-10-07 03:50:29 -0400 2418 2419 changes by Paul Eggert to "europe" (most importantly, fixing 2420 Lithuania and Estonia) 2421 2422 2423 Release 1999g - 1999-09-28 11:06:18 -0400 2424 2425 data changes by Paul Eggert (most importantly, the change for 2426 Lebanon that buys correctness for this coming Sunday) 2427 2428 The "code" file contains changes to "Makefile" and "checktab.awk" to 2429 allow better checking of time zone files before they are published. 2430 2431 2432 Release 1999f - 1999-09-23 09:48:14 -0400 2433 2434 changes by Arthur David Olson and Paul Eggert 2435 2436 2437 Release 1999e - 1999-08-17 15:20:54 -0400 2438 2439 changes circulated by Paul Eggert, although the change to handling 2440 of DST-specifying time zone names has been commented out for now 2441 (search for "XXX" in "localtime.c" for details). These files also 2442 do not make any changes to the start of DST in Brazil. 2443 2444 In addition to Paul's changes, there are updates to "Arts.htm" and 2445 cleanups of URLs. 2446 2447 2448 Release 1999d - 1999-03-30 11:31:07 -0500 2449 2450 changes by Paul Eggert 2451 2452 The Makefile's "make public" rule has also been changed to do a test 2453 compile of each individual time zone data file (which should help 2454 avoid problems such as the one we had with Nicosia). 2455 2456 2457 Release 1999c - 1999-03-25 09:47:47 -0500 2458 2459 changes by Paul Eggert, most importantly the change for Chile. 2460 2461 2462 Release 1999b - 1999-02-01 17:51:44 -0500 2463 2464 changes by Paul Eggert 2465 2466 code changes (suggested by Mani Varadarajan, mani at be.com) for 2467 correct handling of symbolic links when building using a relative directory 2468 2469 code changes to generate correct messages for failed links 2470 2471 updates to the URLs in Arts.htm 2472 2473 2474 Release 1999a - 1999-01-19 16:20:29 -0500 2475 2476 error message internationalizations and corrections in zic.c and 2477 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2478 to whom thanks!) 2479 2480 2481 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2482 2483 changes for Brazil, Chile, and Germany 2484 2485 support for use of "24:00" in the input files for the time zone compiler 2486 2487 2488 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2489 2490 changes by Paul Eggert 2491 2492 correction to a define in the "private.h" file 2493 2494 2495 Release data1998g - 1998-08-11 03:28:35 -0000 2496 [tzdata1998g.tar.gz is missing!] 2497 2498 Lithuanian change provided by mgedmin at pub.osf.it 2499 2500 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2501 "backward") to ensure that the GMT file is created even where folks 2502 don't want the "backward" links (as suggested by Paul Eggert). 2503 2504 2505 Release data1998f - 1998-07-20 13:50:00 -0000 2506 [tzdata1998f.tar.gz is missing!] 2507 2508 Update the "leapseconds" file to include the newly-announced 2509 insertion at the end of 1998. 2510 2511 2512 Release code1998f - 1998-06-01 10:18:31 -0400 2513 2514 addition to localtime.c by Guy Harris 2515 2516 2517 Release 1998e - 1998-05-28 09:56:26 -0400 2518 2519 The Makefile is changed to produce zoneinfo-posix rather than 2520 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2521 zoneinfo/right. 2522 2523 data changes by Paul Eggert 2524 2525 changes from Guy Harris to provide asctime_r and ctime_r 2526 2527 A usno1998 file (substantially identical to usno1997) has been added. 2528 2529 2530 Release 1998d - 1998-05-14 11:58:34 -0400 2531 2532 changes to comments (in particular, elimination of references to CIA maps). 2533 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2534 where changes occur. 2535 2536 2537 Release 1998c - 1998-02-28 12:32:26 -0500 2538 2539 changes by Paul Eggert (save the "French correction," on which I'll 2540 wait for the dust to settle) 2541 2542 symlink changes 2543 2544 changes and additions to Arts.htm 2545 2546 2547 Release 1998b - 1998-01-17 14:31:51 -0500 2548 2549 URL cleanups and additions 2550 2551 2552 Release 1998a - 1998-01-13 12:37:35 -0500 2553 2554 changes by Paul Eggert 2555 2556 2557 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 2558 2559 changes by Paul Eggert, with minor modifications from Arthur David 2560 Olson to make the files more browser friendly 2561 2562 2563 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 2564 2565 minor changes to put "TZif" at the start of each time zone information file 2566 2567 a rule has also been added to the Makefile so you can 2568 make zones 2569 to just recompile the zone information files (rather than doing a 2570 full "make install" with its other effects). 2571 2572 2573 Release data1997i - 1997-10-07 08:45:38 -0400 2574 2575 changes to Africa by Paul Eggert 2576 2577 2578 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 2579 2580 corrections for Uruguay (and other locations) 2581 2582 Arthur David Olson's simple-minded fix allowing mktime to both 2583 correctly handle leap seconds and correctly handle tm_sec values 2584 upon which arithmetic has been performed. 2585 2586 2587 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 2588 2589 Paul Eggert's updates 2590 2591 a small change to a function prototype; 2592 2593 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 2594 include information on Around the World in Eighty Days. 2595 2596 2597 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 2598 2599 fixes to zic's error handling 2600 2601 changes inspired by the item circulated on Slovenia 2602 2603 The description of Web resources has been HTMLified for browsing 2604 convenience. 2605 2606 A new piece of tz-related music has been added to the "Music" file. 2607 2608 2609 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 2610 2611 Paul Eggert's latest suggestions 2612 2613 2614 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 2615 2616 changes to "zic.c" to correct performance of the "-s" option 2617 2618 a new file "usno1997" 2619 2620 2621 Release data1997c - 1997-03-04 09:58:18 -0500 2622 2623 changes in Israel 2624 2625 2626 Release 1997b - 1997-02-27 18:34:19 -0500 2627 2628 The data file incorporates the 1997 leap second. 2629 2630 The code file incorporates Arthur David Olson's take on the 2631 zic/multiprocessor/directory-creation situation. 2632 2633 2634 Release 1997a - 1997-01-21 09:11:10 -0500 2635 2636 Paul Eggert's Antarctica (and other changes) 2637 2638 Arthur David Olson finessed the "getopt" issue by checking against 2639 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 2640 is returned while SunOS 5.5's manual says EOF is returned). 2641 2642 2643 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 2644 2645 Paul Eggert's latest changes 2646 2647 2648 Release code1996n - 1996-12-16 09:42:02 -0500 2649 2650 link snapping fix from Bruce Evans (via Garrett Wollman) 2651 2652 2653 Release data1996m - 1996-11-24 02:37:34 -0000 2654 [tzdata1996m.tar.gz is missing!] 2655 2656 Paul Eggert's batch of changes 2657 2658 2659 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 2660 2661 No functional changes here; the files have simply been changed to 2662 make more use of ISO style dates in comments. The names of the above 2663 files now include the year in full. 2664 2665 2666 Release code96l - 1996-09-08 17:12:20 -0400 2667 2668 tzcode96k was missing a couple of pieces. 2669 2670 2671 Release 96k - 1996-09-08 16:06:22 -0400 2672 2673 the latest round of changes from Paul Eggert 2674 2675 the recent Year 2000 material 2676 2677 2678 Release code96j - 1996-07-30 13:18:53 -0400 2679 2680 Set sp->typecnt as suggested by Timothy Patrick Murphy. 2681 2682 2683 Release code96i - 1996-07-27 20:11:35 -0400 2684 2685 Paul's suggested patch for strftime %V week numbers 2686 2687 2688 Release data96i - 1996-07-01 18:13:04 -0400 2689 2690 "northamerica" and "europe" changes by Paul Eggert 2691 2692 2693 Release code96h - 1996-06-05 08:02:21 -0400 2694 2695 fix for handling transitions specified in Universal Time 2696 2697 Some "public domain" notices have also been added. 2698 2699 2700 Release code96g - 1996-05-16 14:00:26 -0400 2701 2702 fix for the simultaneous-DST-and-zone-change challenge 2703 2704 2705 Release data96h - 1996-05-09 17:40:51 -0400 2706 2707 changes by Paul Eggert 2708 2709 2710 Release code96f-data96g - 1996-05-03 03:09:59 -0000 2711 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 2712 2713 The changes get us some of the way to fixing the problems noted in Paul 2714 Eggert's letter yesterday (in addition to a few others). The approach 2715 has been to make zic a bit smarter about figuring out what time zone 2716 abbreviations apply just after the time specified in the "UNTIL" part 2717 of a zone line. Putting the smarts in zic means avoiding having 2718 transition times show up in both "Zone" lines and "Rule" lines, which 2719 in turn avoids multiple transition time entries in time zone files. 2720 (This also makes the zic input files such as "europe" a bit shorter and 2721 should ease maintenance.) 2722 2723 2724 Release data96f - 1996-04-19 19:20:03 -0000 2725 [tzdata96f.tar.gz is missing!] 2726 2727 The only changes are to the "northamerica" file; the time zone 2728 abbreviation for Denver is corrected to MST (and MDT), and the 2729 comments for Mexico have been updated. 2730 2731 2732 Release data96e - 1996-03-19 17:37:26 -0500 2733 2734 Proposals by Paul Eggert, in particular the Portugal change that 2735 comes into play at the end of this month. 2736 2737 2738 Release data96d - 1996-03-18 20:49:39 -0500 2739 2740 [not summarized] 2741 2742 2743 Release code96e - 1996-02-29 15:43:27 -0000 2744 [tzcode96e.tar.gz is missing!] 2745 2746 internationalization changes and the fix to the documentation for strftime 2747 2748 2749 Release code96d-data96c - 1996-02-12 11:05:27 -0500 2750 2751 The "code" file simply updates Bob Kridle's electronic address. 2752 2753 The "data" file updates rules for Mexico. 2754 2755 2756 Release data96b - 1996-01-27 15:44:42 -0500 2757 2758 Kiribati change 2759 2760 2761 Release code96c - 1996-01-16 16:58:15 -0500 2762 2763 leap-year streamlining and binary-search changes 2764 2765 fix to newctime.3 2766 2767 2768 Release code96b - 1996-01-10 20:42:39 -0500 2769 2770 fixes and enhancements from Paul Eggert, including code that 2771 emulates the behavior of recent versions of the SunOS "date" 2772 command. 2773 2774 2775 Release 96a - 1996-01-06 09:08:24 -0500 2776 2777 Israel updates 2778 2779 fixes to strftime.c for correct ISO 8601 week number generation, 2780 plus support for two new formats ('G' and 'g') to give ISO 8601 year 2781 numbers (which are not necessarily the same as calendar year numbers) 2782 2783 2784 Release code95i-data95m - 1995-12-21 12:46:47 -0500 2785 2786 The latest revisions from Paul Eggert are included, the usno1995 2787 file has been updated, and a new file ("WWW") covering useful URLs 2788 has been added. 2789 2790 2791 Release code95h-data95l - 1995-12-19 18:10:12 -0500 2792 2793 A simplification of a macro definition, a change to data for Sudan, 2794 and (for last minute shoppers) notes in the "Music" file on the CD 2795 "Old Man Time". 2796 2797 2798 Release code95g-data95k - 1995-10-30 10:32:47 -0500 2799 2800 (slightly reformatted) 8-bit-clean proposed patch 2801 2802 minor patch: US/Eastern -> America/New_York 2803 2804 snapshot of the USNO's latest data ("usno1995") 2805 2806 some other minor cleanups 2807 2808 2809 Release code95f-data95j - 1995-10-28 21:01:34 -0000 2810 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 2811 2812 European cleanups 2813 2814 support for 64-bit time_t's 2815 2816 optimization in localtime.c 2817 2818 2819 Release code95e - 1995-10-13 13:23:57 -0400 2820 2821 the mktime change to scan from future to past when trying to find time zone 2822 offsets 2823 2824 2825 Release data95i - 1995-09-26 10:43:26 -0400 2826 2827 For Canada/Central, guess that the Sun customer's "one week too 2828 early" was just a approximation, and the true error is one month 2829 too early. This is consistent with the rest of Canada. 2830 2831 2832 Release data95h - 1995-09-21 11:26:48 -0400 2833 2834 latest changes from Paul Eggert 2835 2836 2837 Release code95d - 1995-09-14 11:14:45 -0400 2838 2839 the addition of a "Music" file, which documents four recorded 2840 versions of the tune "Save That Time". 2841 2842 2843 Release data95g - 1995-09-01 17:21:36 -0400 2844 2845 "yearistype" correction 2846 2847 2848 Release data95f - 1995-08-28 20:46:56 -0400 2849 2850 Paul Eggert's change to the australasia file 2851 2852 2853 Release data95e - 1995-07-08 18:02:34 -0400 2854 2855 The only change is a leap second at the end of this year. 2856 Thanks to Bradley White for forwarding news on the leap second. 2857 2858 2859 Release data95d - 1995-07-03 13:26:22 -0400 2860 2861 Paul Eggert's changes 2862 2863 2864 Release data95c - 1995-07-02 19:19:28 -0400 2865 2866 changes to "asia", "backward", "europe", and "southamerica" 2867 (read: northamericacentrics need not apply) 2868 2869 2870 Release code95c - 1995-03-13 14:00:46 -0500 2871 2872 one-line fix for sign extension problems in detzcode 2873 2874 2875 Release 95b - 1995-03-04 11:22:38 -0500 2876 2877 Minor changes in both: 2878 2879 The "code" file contains a workaround for the lack of "unistd.h" in 2880 Microsoft C++ version 7. 2881 2882 The "data" file contains a fixed "Link" for America/Shiprock. 2883 2884 2885 Release 94h - 1994-12-10 12:51:14 -0500 2886 2887 The files: 2888 2889 * incorporate the changes to "zdump" and "date" to make changes to 2890 the "TZ" environment variable permanent; 2891 2892 * incorporate the table changes by Paul Eggert; 2893 2894 * include (and document) support for universal time specifications in 2895 data files - but do not (yet) include use of this feature in the 2896 data files. 2897 2898 Think of this as "TZ Classic" - the software has been set up not to break if 2899 universal time shows up in its input, and data entries have been 2900 left as is so as not to break existing implementations. 2901 2902 2903 Release data94f - 1994-08-20 12:56:09 -0400 2904 2905 (with thanks!) the latest data updates from Paul Eggert 2906 2907 2908 Release data94e - 1994-06-04 13:13:53 -0400 2909 2910 [not summarized] 2911 2912 2913 Release code94g - 1994-05-05 12:14:07 -0400 2914 2915 fix missing "optind.c" and a reference to it in the Makefile 2916 2917 2918 Release code94f - 1994-05-05 13:00:33 -0000 2919 [tzcode94f.tar.gz is missing!] 2920 2921 changes to avoid overflow in difftime, as well as changes to cope 2922 with the 52/53 challenge in strftime 2923 2924 2925 Release code94e - 1994-03-30 23:32:59 -0500 2926 2927 change for the benefit of PCTS 2928 2929 2930 Release 94d - 1994-02-24 15:42:25 -0500 2931 2932 Avoid clashes with POSIX semantics for zones such as GMT+4. 2933 2934 Some other very minor housekeeping is also present. 2935 2936 2937 Release code94c - 1994-02-10 08:52:40 -0500 2938 2939 Fix bug where mkdirs was broken unless you compile with 2940 -fwritable-strings (which is generally losing to do). 2941 2942 2943 Release 94b - 1994-02-07 10:04:33 -0500 2944 2945 work by Paul Eggert who notes: 2946 2947 I found another book of time zone histories by E W Whitman; it's not 2948 as extensive as Shanks but has a few goodies of its own. I used it 2949 to update the tables. I also fixed some more as a result of 2950 correspondence with Adam David and Peter Ilieve, and move some stray 2951 links from 'europe' to 'backward'. I corrected some scanning errors 2952 in usno1989. 2953 2954 As far as the code goes, I fixed zic to allow years in the range 2955 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 2956 And I cleaned up the zic documentation a little bit. 2957 2958 2959 Release data94a - 1994-02-03 08:58:54 -0500 2960 2961 It simply incorporates the recently announced leap second into the 2962 "leapseconds" file. 2963 2964 2965 Release 93g - 1993-11-22 17:28:27 -0500 2966 2967 Paul Eggert has provided a good deal of historic information (based 2968 on Shanks), and there are some code changes to deal with the buglets 2969 that crawled out in dealing with the new information. 2970 2971 2972 Release 93f - 1993-10-15 12:27:46 -0400 2973 2974 Paul Eggert's changes 2975 2976 2977 Release 93e - 1993-09-05 21:21:44 -0400 2978 2979 This has updated data for Israel, England, and Kwajalein. There's 2980 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 2981 Thanks to Paul Eggert and Peter Ilieve for the changes. 2982 2983 2984 Release 93d - 1993-06-17 23:34:17 -0400 2985 2986 new fix and new data on Israel 2987 2988 2989 Release 93c - 1993-06-06 19:31:55 -0400 2990 2991 [not summarized] 2992 2993 2994 Release 93b - 1993-02-02 14:53:58 -0500 2995 2996 updated "leapseconds" file 2997 2998 2999 Release 93 - 1993-01-08 07:01:06 -0500 3000 3001 At kre's suggestion, the package has been split in two - a code piece 3002 (which also includes documentation) that's only of use to folks who 3003 want to recompile things and a data piece useful to anyone who can 3004 run "zic". 3005 3006 The new version has a few changes to the data files, a few 3007 portability changes, and an off-by-one fix (with thanks to 3008 Tom Karzes at deshaw.com for providing a description and a 3009 solution). 3010 3011 3012 Release 92c - 1992-11-21 17:35:36 -0000 3013 [tz92c.tar.Z is missing!] 3014 3015 The fallout from the latest round of DST transitions. 3016 3017 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 3018 there's also a change to "zic.c" that makes it portable to more systems. 3019 3020 3021 Release 92 - 1992-04-25 18:17:03 -0000 3022 [tz92.tar.Z is missing!] 3023 3024 By popular demand (well, at any rate, following a request by kre at munnari) 3025 3026 3027 The 1989 update of the time zone package featured: 3028 3029 * POSIXization (including interpretation of POSIX-style TZ environment 3030 variables, provided by Guy Harris), 3031 * ANSIfication (including versions of "mktime" and "difftime"), 3032 * SVIDulation (an "altzone" variable) 3033 * MACHination (the "gtime" function) 3034 * corrections to some time zone data (including corrections to the rules 3035 for Great Britain and New Zealand) 3036 * reference data from the United States Naval Observatory for folks who 3037 want to do additional time zones 3038 * and the 1989 data for Saudi Arabia. 3039 3040 (Since this code will be treated as "part of the implementation" in some 3041 places and as "part of the application" in others, there's no good way to 3042 name functions, such as timegm, that are not part of the proposed ANSI C 3043 standard; such functions have kept their old, underscore-free names in this 3044 update.) 3045 3046 And the "dysize" function has disappeared; it was present to allow 3047 compilation of the "date" command on old BSD systems, and a version of "date" 3048 is now provided in the package. The "date" command is not created when you 3049 "make all" since it may lack options provided by the version distributed with 3050 your operating system, or may not interact with the system in the same way 3051 the native version does. 3052 3053 Since POSIX frowns on correct leap second handling, the default behavior of 3054 the "zic" command (in the absence of a "-L" option) has been changed to omit 3055 leap second information from its output files. 3056 3057 3058 ----- 3059 Notes 3060 3061 This file contains copies of the part of each release announcement 3062 that talks about the changes in that release. The text has been 3063 adapted and reformatted for the purposes of this file. 3064 3065 Typically a release R consists of a pair of tarball files, 3066 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3067 code2010a, data2012c) consist of just one or the other tarball, and a 3068 few (e.g., code2012c-data2012d) have tarballs with mixed version 3069 numbers. 3070 3071 Release time stamps are taken from the release's commit (for newer, 3072 git releases), from the newest file in the tarball (for older 3073 releases, where this info is available) or from the email announcing 3074 the release (if all else fails; these are marked with a time zone of 3075 -0000 and an "is missing!" comment). 3076 3077 Earlier versions of the code and data were not announced on the tz 3078 list and are not summarized here. 3079 3080 This file is in the public domain. 3081 3082 Local Variables: 3083 coding: utf-8 3084 End: 3085
Indexes created Mon Sep 29 18:09:42 GMT 2025