NEWS revision 1.9
1 News for the tz database 2 3 Release 2015a - 2015-01-29 22:35:20 -0800 4 5 Changes affecting future time stamps 6 7 The Mexican state of Quintana Roo, represented by America/Cancun, 8 will shift from Central Time with DST to Eastern Time without DST 9 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 10 11 Chile will not change clocks in April or thereafter; its new standard time 12 will be its old daylight saving time. This affects America/Santiago, 13 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 14 15 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 16 (Thanks to Tim Parenti.) 17 18 Changes affecting past time stamps 19 20 Iceland observed DST in 1919 and 1921, and its 1939 fallback 21 transition was Oct. 29, not Nov. 29. Remove incorrect data from 22 Shanks about time in Iceland between 1837 and 1908. 23 24 Some more zones have been turned into links, when they differed 25 from existing zones only for older time stamps. As usual, 26 these changes affect UTC offsets in pre-1970 time stamps only. 27 Their old contents have been moved to the 'backzone' file. 28 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 29 and Asia/Muscat. 30 31 Changes affecting code 32 33 tzalloc now scrubs time zone abbreviations compatibly with the way 34 that tzset always has, by replacing invalid bytes with '_' and by 35 shortening too-long abbreviations. 36 37 tzselect ports to POSIX awk implementations, no longer mishandles 38 POSIX TZ settings when GNU awk is used, and reports POSIX TZ 39 settings to the user. (Thanks to Stefan Kuhn.) 40 41 Changes affecting build procedure 42 43 'make check' now checks for links to links in the data. 44 One such link (for Africa/Asmera) has been fixed. 45 (Thanks to Stephen Colebourne for pointing out the problem.) 46 47 Changes affecting commentary 48 49 The leapseconds file commentary now mentions the expiration date. 50 (Problem reported by Martin Burnicki.) 51 52 Update Mexican Library of Congress URL. 53 54 55 Release 2014j - 2014-11-10 17:37:11 -0800 56 57 Changes affecting current and future time stamps 58 59 Turks & Caicos' switch from US eastern time to UTC-4 year-round 60 did not occur on 2014-11-02 at 02:00. It's currently scheduled 61 for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 62 63 Changes affecting past time stamps 64 65 Many pre-1989 time stamps have been corrected for Asia/Seoul and 66 Asia/Pyongyang, based on sources for the Korean-language Wikipedia 67 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 68 longer guess that Pyongyang mimicked Seoul time after World War II, 69 as this is politically implausible. 70 71 Some more zones have been turned into links, when they differed 72 from existing zones only for older time stamps. As usual, 73 these changes affect UTC offsets in pre-1970 time stamps only. 74 Their old contents have been moved to the 'backzone' file. 75 The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 76 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 77 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 78 Indian/Mayotte. 79 80 Changes affecting commentary 81 82 The commentary is less enthusiastic about Shanks as a source, 83 and is more careful to distinguish UT from UTC. 84 85 86 Release 2014i - 2014-10-21 22:04:57 -0700 87 88 Changes affecting future time stamps 89 90 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 91 (Thanks to Ken Rylander for the heads-up.) Guess that future 92 years will use a similar pattern. 93 94 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 95 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 96 (Thanks to Kiley Walbom for the heads-up.) 97 98 Changes affecting time zone abbreviations 99 100 Since Belarus is not changing its clocks even though Moscow is, 101 the time zone abbreviation in Europe/Minsk is changing from FET 102 to its more-traditional value MSK on 2014-10-26 at 01:00. 103 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 104 105 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 106 Indochina, to distinguish it better from ICT (UT+7). 107 108 Changes affecting past time stamps 109 110 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 111 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 112 authoritative book). Asia/Ho_Chi_Minh has been added to 113 zone1970.tab, to give tzselect users in Vietnam two choices, 114 since north and south Vietnam disagreed after our 1970 cutoff. 115 116 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 117 they differed from existing zones only for older time stamps. As 118 usual, these changes affect pre-1970 time stamps only. Their old 119 contents have been moved to the 'backzone' file. 120 121 Changes affecting code 122 123 The time-related library functions now set errno on failure, and 124 some crashes in the new tzalloc-related library functions have 125 been fixed. (Thanks to Christos Zoulas for reporting most of 126 these problems and for suggesting fixes.) 127 128 If USG_COMPAT is defined and the requested time stamp is standard time, 129 the tz library's localtime and mktime functions now set the extern 130 variable timezone to a value appropriate for that time stamp; and 131 similarly for ALTZONE, daylight saving time, and the altzone variable. 132 This change is a companion to the tzname change in 2014h, and is 133 designed to make timezone and altzone more compatible with tzname. 134 135 The tz library's functions now set errno to EOVERFLOW if they fail 136 because the result cannot be represented. ctime and ctime_r now 137 return NULL and set errno when a time stamp is out of range, rather 138 than having undefined behavior. 139 140 Some bugs associated with the new 2014g functions have been fixed. 141 This includes a bug that largely incapacitated the new functions 142 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 143 It also includes some uses of uninitialized variables after tzalloc. 144 The new code uses the standard type 'ssize_t', which the Makefile 145 now gives porting advice about. 146 147 Changes affecting commentary 148 149 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 150 151 152 Release 2014h - 2014-09-25 18:59:03 -0700 153 154 Changes affecting past time stamps 155 156 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 157 158 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 159 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 160 161 Some more zones have been turned into links, when they differed 162 from existing zones only for older time stamps. As usual, 163 these changes affect UTC offsets in pre-1970 time stamps only. 164 Their old contents have been moved to the 'backzone' file. 165 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 166 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 167 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 168 169 Changes affecting code 170 171 zdump -V and -v now output gmtoff= values on all platforms, 172 not merely on platforms defining TM_GMTOFF. 173 174 The tz library's localtime and mktime functions now set tzname to a value 175 appropriate for the requested time stamp, and zdump now uses this 176 on platforms not defining TM_ZONE, fixing a 2014g regression. 177 (Thanks to Tim Parenti for reporting the problem.) 178 179 The tz library no longer sets tzname if localtime or mktime fails. 180 181 zdump -c no longer mishandles transitions near year boundaries. 182 (Thanks to Tim Parenti for reporting the problem.) 183 184 An access to uninitalized data has been fixed. 185 (Thanks to Jrg Richter for reporting the problem.) 186 187 When THREAD_SAFE is defined, the code ports to the C11 memory model. 188 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 189 and two threads race to initialize data used by gmtime-like functions. 190 (Thanks to Andy Heninger for reporting the problems.) 191 192 Changes affecting build procedure 193 194 'make check' now checks better for properly-sorted data. 195 196 Changes affecting documentation and commentary 197 198 zdump's gmtoff=N output is now documented, and its isdst=D output 199 is now documented to possibly output D values other than 0 or 1. 200 201 zdump -c's treatment of years is now documented to use the 202 Gregorian calendar and Universal Time without leap seconds, 203 and its behavior at cutoff boundaries is now documented better. 204 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 205 206 Programs are now documented to use the proleptic Gregorian calendar. 207 (Thanks to Alan Barrett for the suggestion.) 208 209 Fractional-second GMT offsets have been documented for civil time 210 in 19th-century Chennai, Jakarta, and New York. 211 212 213 Release 2014g - 2014-08-28 12:31:23 -0700 214 215 Changes affecting future time stamps 216 217 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 218 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 219 [As noted in 2014j, this switch was later delayed.] 220 221 Changes affecting past time stamps 222 223 Time in Russia or the USSR before 1926 or so has been corrected by 224 a few seconds in the following zones: Asia/Irkutsk, 225 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 226 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 227 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 228 Vladimir Karpinsky.) 229 230 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 231 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 232 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 233 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 234 (Thanks to Stephen Colebourne for pointing to the decree.) 235 236 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 237 238 A new file 'backzone' contains data which may appeal to 239 connoisseurs of old time stamps, although it is out of scope for 240 the tz database, is often poorly sourced, and contains some data 241 that is known to be incorrect. The new file is not recommended 242 for ordinary use and its entries are not installed by default. 243 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 244 Isle of Man entries.) 245 246 Some more zones have been turned into links, when they differed 247 from existing zones only for older time stamps. As usual, 248 these changes affect UTC offsets in pre-1970 time stamps only. 249 Their old contents have been moved to the 'backzone' file. 250 The affected zones are: Africa/Bangui, Africa/Brazzaville, 251 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 252 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 253 254 Changes affecting code 255 256 Unless NETBSD_INSPIRED is defined to 0, the tz library now 257 supplies functions for creating and using objects that represent 258 time zones. The new functions are tzalloc, tzfree, localtime_rz, 259 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 260 time2posix_z. They are intended for performance: for example, 261 localtime_rz (unlike localtime_r) is trivially thread-safe without 262 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 263 functions, and to Alan Barrett and Jonathan Lennox for helping to 264 debug the change.) 265 266 zdump now builds with the tz library unless USE_LTZ is defined to 0, 267 This lets zdump use tz features even if the system library lacks them. 268 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 269 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 270 271 zdump now uses localtime_rz if available, as it's significantly faster, 272 and it can help zdump better diagnose invalid time zone names. 273 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 274 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 275 not available, zdump now uses localtime_r and tzset if available, 276 as this is a bit cleaner and faster than plain localtime. Compile 277 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 278 lacks these two functions. 279 280 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 281 Although not needed for tz's own applications, which are single-threaded, 282 this supports POSIX better if the tz library is used in multithreaded apps. 283 284 Some crashes have been fixed when zdump or the tz library is given 285 invalid or outlandish input. 286 287 The tz library no longer mishandles leap seconds on platforms with 288 unsigned time_t in time zones that lack ordinary transitions after 1970. 289 290 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 291 already defined, to make it easier to configure on common platforms. 292 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 293 294 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 295 assumes that reading uninitialized memory yields garbage values 296 but does not cause other problems such as traps. 297 298 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 299 more likely to guess right for ambiguous time stamps near 300 transitions where tm_isdst does not change. 301 302 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 303 strftime_l for compatibility with recent versions of POSIX. 304 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 305 to 1 on recent POSIX versions, and to 0 otherwise. 306 307 tzselect -c now uses a hybrid distance measure that works better 308 in Africa. (Thanks to Alan Barrett for noting the problem.) 309 310 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 311 or when time_tz is defined. 312 313 When HAVE_UTMPX_H is set the 'date' command now builds on systems 314 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 315 the date it updates the wtmpx file if _PATH_WTMPX is defined. 316 This affects GNU/Linux and similar systems. 317 318 For easier maintenance later, some C code has been simplified, 319 some lint has been removed, and the code has been tweaked so that 320 plain 'make' is more likely to work. 321 322 The C type 'bool' is now used for boolean values, instead of 'int'. 323 324 The long-obsolete LOCALE_HOME code has been removed. 325 326 The long-obsolete 'gtime' function has been removed. 327 328 Changes affecting build procedure 329 330 'zdump' no longer links in ialloc.o, as it's not needed. 331 332 'make check_time_t_alternatives' no longer assumes GNU diff. 333 334 Changes affecting distribution tarballs 335 336 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 337 the tzdata tarball instead of the tzcode tarball, since they help 338 maintain the data. The NEWS and Theory files are now also 339 distributed in the tzdata tarball, as they're relevant for data. 340 (Thanks to Alan Barrett for pointing this out.) Also, the 341 leapseconds.awk file is no longer distributed in the tzcode 342 tarball, since it belongs in the tzdata tarball (where 2014f 343 inadvertently also distributed it). 344 345 Changes affecting documentation and commentary 346 347 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 348 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 349 for debugging it.) 350 351 The man pages have been updated to use function prototypes, 352 to document thread-safe variants like localtime_r, and to document 353 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 354 mktime_z. 355 356 The fields in Link lines have been renamed to be more descriptive 357 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 358 and LINK-TO has become LINK-NAME. 359 360 tz-link.htm mentions the IETF's tzdist working group; Windows 361 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 362 363 Some broken URLs have been fixed in the commentary. (Thanks to 364 Lester Caine.) 365 366 Commentary about Philippines DST has been updated, and commentary 367 on pre-1970 time in India has been added. 368 369 370 Release 2014f - 2014-08-05 17:42:36 -0700 371 372 Changes affecting future time stamps 373 374 Russia will subtract an hour from most of its time zones on 2014-10-26 375 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 376 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 377 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 378 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 379 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 380 (Europe/Samara) are not changing their clocks. The changed zones are 381 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 382 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 383 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 384 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 385 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 386 but not its UTC offset. Two zones are added: Asia/Chita (split 387 from Asia/Yakutsk, and also with two hours subtracted) and 388 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 389 subtracted). (Thanks to Tim Parenti for much of the above.) 390 391 Changes affecting time zone abbreviations 392 393 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 394 and similarly for the other Australian zones. That is, for eastern 395 standard and daylight saving time the abbreviations are AEST and AEDT 396 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 397 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 398 This change does not affect UTC offsets, only time zone abbreviations. 399 (Thanks to Rich Tibbett and many others.) 400 401 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 402 effective 2014-10-26 at 02:00 local time. 403 404 The time zone abbreviation for Xinjiang Time (observed in rmqi) 405 has been changed from URUT to XJT. (Thanks to Luther Ma.) 406 407 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 408 Similarly, prefer EET/EEST for eastern European time in Russia. 409 410 Change time zone abbreviations in (western) Samoa to use "ST" and 411 "DT" suffixes, as this is more likely to match common practice. 412 Prefix "W" to (western) Samoa time when its standard-time offset 413 disagrees with that of American Samoa. 414 415 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 416 417 Time zone abbreviations have been updated for Japan's two time 418 zones used 1896-1937. JWST now stands for Western Standard 419 Time, and JCST for Central Standard Time (formerly this was CJT). 420 These abbreviations are now used for time in Korea, Taiwan, 421 and Sakhalin while controlled by Japan. 422 423 Changes affecting past time stamps 424 425 China's five zones have been simplified to two, since the post-1970 426 differences in the other three seem to have been imaginary. The 427 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 428 removed; backwards-compatibility links still work, albeit with 429 different behaviors for time stamps before May 1980. Asia/Urumqi's 430 1980 transition to UTC+8 has been removed, so that it is now at 431 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 432 Treindl sent helpful translations of two papers by Guo Qingsheng.) 433 434 Some zones have been turned into links, when they differed from existing 435 zones only for older UTC offsets where data entries were likely invented. 436 These changes affect UTC offsets in pre-1970 time stamps only. This is 437 similar to the change in release 2013e, except this time for western 438 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 439 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 440 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 441 Atlantic/St_Helena. This also affects the backwards-compatibility 442 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 443 Tim Parenti, and David Patte for reporting problems in earlier 444 versions of this change.) 445 446 Asia/Shanghai's pre-standard-time UT offset has been changed from 447 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 448 transition to standard time has been changed from 1928 to 1901. 449 450 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 451 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 452 In 1946 it observed DST from 05-15 through 09-30; in 1947 453 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 454 (Thanks to Yu-Cheng Chuang.) 455 456 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 457 458 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 459 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 460 461 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 462 from 1911 to 1950. 463 464 Pacific/Chatham has been changed to New Zealand standard time plus 465 45 minutes for the period before 1957, reflecting a 1956 remark in 466 the New Zealand parliament. 467 468 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 469 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 470 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 471 not 04-06 at 02:00; and there was no DST in 1920. 472 473 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 474 475 Time in Russia before 1927 or so has been corrected by a few seconds in 476 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 477 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 478 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 479 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 480 481 Changes affecting data format 482 483 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 484 The new file's extended format allows multiple country codes per zone. 485 The older file is still installed but is deprecated; its format is 486 not changing and it will still be distributed for a while, but new 487 applications should use the new file. 488 489 The new file format simplifies maintenance of obscure locations. 490 To test this, it adds coverage for the Crozet Islands and the 491 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 492 493 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 494 It is still ASCII now, but commentary about the switch has been added. 495 The new file 'zone1970.tab' already uses UTF-8. 496 497 Changes affecting code 498 499 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 500 is defined. (Thanks to Elliott Hughes for reporting the problem.) 501 502 'zic' no longer mishandles input when ignoring case in locales that 503 are not compatible with English, e.g., unibyte Turkish locales when 504 compiled with HAVE_GETTEXT. 505 506 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 507 they no longer use ASCII '-' as if it were a dash. 508 509 'zic' now rejects output file names that contain '.' or '..' components. 510 (Thanks to Tim Parenti for reporting the problem.) 511 512 'zic -v' now warns about output file names that do not follow 513 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 514 David Olson for starting the ball rolling on this.) 515 516 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 517 518 Changes affecting build procedure 519 520 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 521 (Thanks to John Cochran.) 522 523 Changes affecting documentation and commentary 524 525 The 'Theory' file documents legacy names, the longstanding 526 exceptions to the POSIX-inspired file name rules. 527 528 The 'zic' documentation clarifies the role of time types when 529 interpreting dates. (Thanks to Arthur David Olson.) 530 531 Documentation and commentary now prefer UTF-8 to US-ASCII, 532 allowing the use of proper accents in foreign words and names. 533 Code and data have not changed because of this. (Thanks to 534 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 535 this.) 536 537 Non-HTML documentation and commentary now use plain-text URLs instead of 538 HTML insertions, and are more consistent about bracketing URLs when they 539 are not already surrounded by white space. (Thanks to suggestions by 540 Steffen Nurpmeso.) 541 542 There is new commentary about Xujiahui Observatory, the five time-zone 543 project in China from 1918 to 1949, timekeeping in Japanese-occupied 544 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 545 warlord Jin Shuren in the data. 546 547 Commentary about the coverage of each Russian zone has been standardized. 548 (Thanks to Tim Parenti). 549 550 There is new commentary about contemporary timekeeping in Ethiopia. 551 552 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 553 554 There is new commentary about time in Poland in 1919. 555 556 Proper credit has been given to DST inventor George Vernon Hudson. 557 558 Commentary about time in Metlakatla, AK and Resolute, NU has been 559 improved, with a new source for the former. 560 561 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 562 is uninhabited. 563 564 Commentary about permanent Antarctic bases has been updated. 565 566 Several typos have been corrected. (Thanks to Tim Parenti for 567 contributing some of these fixes.) 568 569 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 570 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 571 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 572 (Thanks to a heads-up from Dirkjan Ochtman.) 573 574 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 575 have been removed. These obsolescent US Naval Observatory entries were no 576 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 577 578 579 Release 2014e - 2014-06-12 21:53:52 -0700 580 581 Changes affecting near-future time stamps 582 583 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 584 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 585 switch to standard time at 24:00 the last Thursday before Ramadan, and 586 back to DST at 00:00 the first Friday after Ramadan. 587 588 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 589 to Milamber Space Network.) Guess that from 2015 on Morocco will 590 temporarily switch to standard time at 03:00 the last Saturday before 591 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 592 593 Changes affecting past time stamps 594 595 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 596 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 597 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 598 in 1991. (Thanks to Hank W. for reporting the problems.) 599 600 Changes affecting commentary 601 602 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 603 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 604 removes stale pointers to World Time Explorer and WORLDTIME. 605 606 607 Release 2014d - 2014-05-27 21:34:40 -0700 608 609 Changes affecting code 610 611 zic no longer generates files containing time stamps before the Big Bang. 612 This works around GNOME bug 730332 613 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 614 (Thanks to Leonardo Chiquitto for reporting the bug, and to 615 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 616 617 Changes affecting documentation 618 619 tz-link.htm now mentions GNOME. 620 621 622 Release 2014c - 2014-05-13 07:44:13 -0700 623 624 Changes affecting near-future time stamps 625 626 Egypt observes DST starting 2014-05-15 at 24:00. 627 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 628 Details have not been announced, except that DST will not be observed 629 during Ramadan. Guess that DST will stop during the same Ramadan dates as 630 Morocco, and that Egypt's future spring and fall transitions will be the 631 same as 2010 when it last observed DST, namely April's last Friday at 632 00:00 to September's last Thursday at 23:00 standard time. Also, guess 633 that Ramadan transitions will be at 00:00 standard time. 634 635 Changes affecting code 636 637 zic now generates transitions for minimum time values, eliminating guesswork 638 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 639 640 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 641 642 Changes affecting commentary and documentation 643 644 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 645 646 647 Release 2014b - 2014-03-24 21:28:50 -0700 648 649 Changes affecting near-future time stamps 650 651 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 652 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 653 654 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 655 Bengt-Inge Larsson.) This is currently an approximation; a better version 656 will require the zic and localtime fixes mentioned below, and the plan is 657 to wait for a while until at least the zic fixes propagate. 658 659 Changes affecting code 660 661 'zic' and 'localtime' no longer reject locations needing four transitions 662 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 663 Also, 'zic' avoids some unlikely failures due to integer overflow. 664 665 Changes affecting build procedure 666 667 'make check' now detects Rule lines defined but never used. 668 The NZAQ rules, an instance of this problem, have been removed. 669 670 Changes affecting commentary and documentation 671 672 Fix Tuesday/Thursday typo in description of time in Israel. 673 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 674 675 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 676 to Donald MacQueen.) Instead, the Microsoft Windows Store app 677 library supports them. 678 679 Add comments about Johnston Island time in the 1960s. 680 (Thanks to Lyle McElhaney.) 681 682 Morocco's 2014 DST start will be as predicted. 683 (Thanks to Sebastien Willemijns.) 684 685 686 Release 2014a - 2014-03-07 23:30:29 -0800 687 688 Changes affecting near-future time stamps 689 690 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 691 the heads-up, and to Tim Parenti for simplifying the update.) 692 693 Changes affecting past time stamps 694 695 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 696 (Thanks to Steffen Thorsen.) 697 698 Ukraine switched from Moscow to Eastern European time on 1990-07-01 699 (not 1992-01-01), and observed DST during the entire next winter. 700 (Thanks to Vladimir in Moscow via Alois Treindl.) 701 702 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 703 (Thanks to Avigdor Finkelstein.) 704 705 Changes affecting code 706 707 A uninitialized-storage bug in 'localtime' has been fixed. 708 (Thanks to Logan Chien.) 709 710 Changes affecting the build procedure 711 712 The settings for 'make check_web' now default to Ubuntu 13.10. 713 714 Changes affecting commentary and documentation 715 716 The boundary of the US Pacific time zone is given more accurately. 717 (Thanks to Alan Mintz.) 718 719 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 720 721 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 722 723 Better descriptions of countries with same time zone history as 724 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 725 726 Several changes affect tz-link.htm, the main web page. 727 728 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 729 David Braverman). 730 731 Mention xCal (Internet RFC 6321) and jCal. 732 733 Microsoft has some support for tz database names. 734 735 CLDR data formats include both XML and JSON. 736 737 Mention Maggiolo's map of solar vs standard time. 738 (Thanks to Arthur David Olson.) 739 740 Mention TZ4Net. (Thanks to Matt Johnson.) 741 742 Mention the timezone-olson Haskell package. 743 744 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 745 746 Remove moribund links to daylight-savings-time.info and to 747 Simple Timer + Clocks. 748 749 Update two links. (Thanks to Oscar van Vlijmen.) 750 751 Fix some formatting glitches, e.g., remove random newlines from 752 abbr elements' title attributes. 753 754 755 Release 2013i - 2013-12-17 07:25:23 -0800 756 757 Changes affecting near-future time stamps: 758 759 Jordan switches back to standard time at 00:00 on December 20, 2013. 760 The 2006-2011 transition schedule is planned to resume in 2014. 761 (Thanks to Steffen Thorsen.) 762 763 Changes affecting past time stamps: 764 765 In 2004, Cuba began DST on March 28, not April 4. 766 (Thanks to Steffen Thorsen.) 767 768 Changes affecting code 769 770 The compile-time flag NOSOLAR has been removed, as nowadays the 771 benefit of slightly shrinking runtime table size is outweighed by the 772 cost of disallowing potential future updates that exceed old limits. 773 774 Changes affecting documentation and commentary 775 776 The files solar87, solar88, and solar89 are no longer distributed. 777 They were a negative experiment - that is, a demonstration that 778 tz data can represent solar time only with some difficulty and error. 779 Their presence in the distribution caused confusion, as Riyadh 780 civil time was generally not solar time in those years. 781 782 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 783 784 785 Release 2013h - 2013-10-25 15:32:32 -0700 786 787 Changes affecting current and future time stamps: 788 789 Libya has switched its time zone back to UTC+2 without DST, 790 instead of UTC+1 with DST. (Thanks to Even Scharning.) 791 792 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 793 (Thanks to Gwillim Law.) 794 795 Changes affecting future time stamps: 796 797 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 798 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 799 (Thanks to Steffen Thorsen.) 800 801 Add entries for DST transitions in Morocco in the year 2038. 802 This avoids some year-2038 glitches introduced in 2013g. 803 (Thanks to Yoshito Umaoka for reporting the problem.) 804 805 Changes affecting API 806 807 The 'tzselect' command no longer requires the 'select' command, 808 and should now work with /bin/sh on more platforms. It also works 809 around a bug in BusyBox awk before version 1.21.0. (Thanks to 810 Patrick 'P. J.' McDermott and Alan Barrett.) 811 812 Changes affecting code 813 814 Fix localtime overflow bugs with 32-bit unsigned time_t. 815 816 zdump no longer assumes sscanf returns maximal values on overflow. 817 818 Changes affecting the build procedure 819 820 The builder can specify which programs to use, if any, instead of 821 'ar' and 'ranlib', and libtz.a is now built locally before being 822 installed. (Thanks to Michael Forney.) 823 824 A dependency typo in the 'zdump' rule has been fixed. 825 (Thanks to Andrew Paprocki.) 826 827 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 828 work as specified by POSIX.2-1992 or later; this is portable nowadays. 829 830 'make clean' no longer removes 'leapseconds', since it's 831 host-independent and is part of the distribution. 832 833 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 834 835 Changes affecting documentation and commentary 836 837 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 838 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 839 840 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 841 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 842 longer maintained) and for old advisories. SOFA now does C. 843 844 Release 2013g - 2013-09-30 21:08:26 -0700 845 846 Changes affecting current and near-future time stamps 847 848 Morocco now observes DST from the last Sunday in March to the last 849 Sunday in October, not April to September respectively. (Thanks 850 to Steffen Thorsen.) 851 852 Changes affecting 'zic' 853 854 'zic' now runs on platforms that lack both hard links and symlinks. 855 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 856 Also, fix some bugs on platforms that lack hard links but have symlinks. 857 858 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 859 to predict the far future, fixing a bug introduced in 2013e. 860 861 Changes affecting the build procedure 862 863 The 'leapseconds' file is again put into the tzdata tarball. 864 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 865 Matt Burgess and Ian Abbott.) The timestamps of these and other 866 dependent files in tarballs are adjusted more consistently. 867 868 Changes affecting documentation and commentary 869 870 The README file is now part of the data tarball as well as the code. 871 It now states that files are public domain unless otherwise specified. 872 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 873 Its details about the 1989 release moved to a place of honor near 874 the end of NEWS. 875 876 877 Release 2013f - 2013-09-24 23:37:36 -0700 878 879 Changes affecting near-future time stamps 880 881 Tocantins will very likely not observe DST starting this spring. 882 (Thanks to Steffen Thorsen.) 883 884 Jordan will likely stay at UTC+3 indefinitely, and will not fall 885 back this fall. 886 887 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 888 889 Changes affecting API 890 891 The types of the global variables 'timezone' and 'altzone' (if present) 892 have been changed back to 'long'. This is required for 'timezone' 893 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 894 These variables were originally 'long' in the tz code, but were 895 mistakenly changed to 'time_t' in 1987; nobody reported the 896 incompatibility until now. The difference matters on x32, where 897 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 898 899 Changes affecting the build procedure 900 901 Avoid long strings in leapseconds.awk to work around a mawk bug. 902 (Thanks to Cyril Baurand.) 903 904 Changes affecting documentation and commentary 905 906 New file 'NEWS' that contains release notes like this one. 907 908 Paraguay's law does not specify DST transition time; 00:00 is customary. 909 (Thanks to Waldemar Villamayor-Venialbo.) 910 911 Minor capitalization fixes. 912 913 Changes affecting version-control only 914 915 The experimental GitHub repository now contains annotated and 916 signed tags for recent releases, e.g., '2013e' for Release 2013e. 917 Releases are tagged starting with 2012e; earlier releases were 918 done differently, and tags would either not have a simple name or 919 not exactly match what was released. 920 921 'make set-timestamps' is now simpler and a bit more portable. 922 923 924 Release 2013e - 2013-09-19 23:50:04 -0700 925 926 Changes affecting near-future time stamps 927 928 This year Fiji will start DST on October 27, not October 20. 929 (Thanks to David Wheeler for the heads-up.) For now, guess that 930 Fiji will continue to spring forward the Sunday before the fourth 931 Monday in October. 932 933 Changes affecting current and future time zone abbreviations 934 935 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 936 time zone abbreviations since 1932. (Thanks to George Ziegler, 937 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 938 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 939 Asia/Makassar, and Asia/Pontianak. 940 941 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 942 daylight saving time) for San Luis, Argentina since 2009. 943 944 Changes affecting Godthb time stamps after 2037 if version mismatch 945 946 Allow POSIX-like TZ strings where the transition time's hour can 947 range from -167 through 167, instead of the POSIX-required 0 948 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 949 new Fiji rules. This is a more-compact way to represent 950 far-future time stamps for America/Godthab, America/Santiago, 951 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 952 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 953 this change. (Derived from a suggestion by Arthur David Olson.) 954 955 Allow POSIX-like TZ strings where daylight saving time is in 956 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 957 Argentina Summer Time all year. This supports a more-compact way 958 to represent the 2013d data for America/Argentina/San_Luis. 959 Because of the change for San Luis noted above this change does not 960 affect the current data. (Thanks to Andrew Main (Zefram) for 961 suggestions that improved this change.) 962 963 Where these two TZ changes take effect, there is a minor extension 964 to the tz file format in that it allows new values for the 965 embedded TZ-format string, and the tz file format version number 966 has therefore been increased from 2 to 3 as a precaution. 967 Version-2-based client code should continue to work as before for 968 all time stamps before 2038. Existing version-2-based client code 969 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 970 files, and typically works in practice even for time stamps after 971 2037; the only known exception is America/Godthab. 972 973 Changes affecting time stamps before 1970 974 975 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 976 some errors before 1947. 977 978 Some zones have been turned into links, when they differ from existing 979 zones only in older data entries that were likely invented or that 980 differ only in LMT or transitions from LMT. These changes affect 981 only time stamps before 1943. The affected zones are: 982 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 983 America/Grenada, America/Guadeloupe, America/Marigot, 984 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 985 America/St_Lucia, America/St_Thomas, America/St_Vincent, 986 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 987 confirming that the old Europe/Vaduz zone was wrong and the new 988 link is better for WWII-era times.) 989 990 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 991 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 992 from 1890 to 1912. 993 994 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 995 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 996 to Alois Treindl). 997 998 Change the date of the circa-1850 Zurich transition from 1849-09-12 999 to 1853-07-16, overriding Shanks with data from Messerli about 1000 postal and telegraph time in Switzerland. 1001 1002 Changes affecting time zone abbreviations before 1970 1003 1004 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 1005 as Jakarta was called Batavia back then. 1006 1007 Changes affecting API 1008 1009 The 'zic' command now outputs a dummy transition when far-future 1010 data can't be summarized using a TZ string, and uses a 402-year 1011 window rather than a 400-year window. For the current data, this 1012 affects only the Asia/Tehran file. It does not affect any of the 1013 time stamps that this file represents, so zdump outputs the same 1014 information as before. (Thanks to Andrew Main (Zefram).) 1015 1016 The 'date' command has a new '-r' option, which lets you specify 1017 the integer time to display, a la FreeBSD. 1018 1019 The 'tzselect' command has two new options '-c' and '-n', which lets you 1020 select a zone based on latitude and longitude. 1021 1022 The 'zic' command's '-v' option now warns about constructs that 1023 require the new version-3 binary file format. (Thanks to Arthur 1024 David Olson for the suggestion.) 1025 1026 Support for floating-point time_t has been removed. 1027 It was always dicey, and POSIX no longer requires it. 1028 (Thanks to Eric Blake for suggesting to the POSIX committee to 1029 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 1030 Heninger, Arthur David Olson, and Alois Treindl, for reporting 1031 bugs and elucidating some of the corners of the old floating-point 1032 implementation.) 1033 1034 The signatures of 'offtime', 'timeoff', and 'gtime' have been 1035 changed back to the old practice of using 'long' to represent UT 1036 offsets. This had been inadvertently and mistakenly changed to 1037 'int_fast32_t'. (Thanks to Christos Zoulas.) 1038 1039 The code avoids undefined behavior on integer overflow in some 1040 more places, including gmtime, localtime, mktime and zdump. 1041 1042 Changes affecting the zdump utility 1043 1044 zdump now outputs "UT" when referring to Universal Time, not "UTC". 1045 "UTC" does not make sense for time stamps that predate the introduction 1046 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 1047 for clarifying UT vs UTC.) 1048 1049 Data changes affecting behavior of tzselect and similar programs 1050 1051 Country code BQ is now called the more-common name "Caribbean Netherlands" 1052 rather than the more-official "Bonaire, St Eustatius & Saba". 1053 1054 Remove from zone.tab the names America/Montreal, America/Shiprock, 1055 and Antarctica/South_Pole, as they are equivalent to existing 1056 same-country-code zones for post-1970 time stamps. The data entries for 1057 these names are unchanged, so the names continue to work as before. 1058 1059 Changes affecting code internals 1060 1061 zic -c now runs way faster on 64-bit hosts when given large numbers. 1062 1063 zic now uses vfprintf to avoid allocating and freeing some memory. 1064 1065 tzselect now computes the list of continents from the data, 1066 rather than have it hard-coded. 1067 1068 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 1069 1070 Changes affecting the build procedure 1071 1072 The 'leapseconds' file is now generated automatically from a 1073 new file 'leap-seconds.list', which is a copy of 1074 <ftp://time.nist.gov/pub/leap-seconds.list>. 1075 A new source file 'leapseconds.awk' implements this. 1076 The goal is simplification of the future maintenance of 'leapseconds'. 1077 1078 When building the 'posix' or 'right' subdirectories, if the 1079 subdirectory would be a copy of the default subdirectory, it is 1080 now made a symbolic link if that is supported. This saves about 1081 2 MB of file system space. 1082 1083 The links America/Shiprock and Antarctica/South_Pole have been 1084 moved to the 'backward' file. This affects only nondefault builds 1085 that omit 'backward'. 1086 1087 Changes affecting version-control only 1088 1089 .gitignore now ignores 'date'. 1090 1091 Changes affecting documentation and commentary 1092 1093 Changes to the 'tzfile' man page 1094 1095 It now mentions that the binary file format may be extended in 1096 future versions by appending data. 1097 1098 It now refers to the 'zdump' and 'zic' man pages. 1099 1100 Changes to the 'zic' man page 1101 1102 It lists conditions that elicit a warning with '-v'. 1103 1104 It says that the behavior is unspecified when duplicate names 1105 are given, or if the source of one link is the target of another. 1106 1107 Its examples are updated to match the latest data. 1108 1109 The definition of white space has been clarified slightly. 1110 (Thanks to Michael Deckers.) 1111 1112 Changes to the 'Theory' file 1113 1114 There is a new section about the accuracy of the tz database, 1115 describing the many ways that errors can creep in, and 1116 explaining why so many of the pre-1970 time stamps are wrong or 1117 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1118 Wollman for discussions that contributed to this). 1119 1120 The 'Theory' file describes LMT better (this follows a 1121 suggestion by Guy Harris). 1122 1123 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1124 1125 It's mentioned that excluding 'backward' should not affect the 1126 other data, and it suggests at least one zone.tab name per 1127 inhabited country (thanks to Stephen Colebourne). 1128 1129 Some longstanding restrictions on names are documented, e.g., 1130 'America/New_York' precludes 'America/New_York/Bronx'. 1131 1132 It gives more reasons for the 1970 cutoff. 1133 1134 It now mentions which time_t variants are supported, such as 1135 signed integer time_t. (Thanks to Paul Goyette for reporting 1136 typos in an experimental version of this change.) 1137 1138 (Thanks to Philip Newton for correcting typos in these changes.) 1139 1140 Documentation and commentary is more careful to distinguish UT in 1141 general from UTC in particular. (Thanks to Steve Allen.) 1142 1143 Add a better source for the Zurich 1894 transition. 1144 (Thanks to Pierre-Yves Berger.) 1145 1146 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1147 1148 1149 Release 2013d - 2013-07-05 07:38:01 -0700 1150 1151 Changes affecting future time stamps: 1152 1153 Morocco's midsummer transitions this year are July 7 and August 10, 1154 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1155 1156 Israel now falls back on the last Sunday of October. 1157 (Thanks to Ephraim Silverberg.) 1158 1159 Changes affecting past time stamps: 1160 1161 Specify Jerusalem's location more precisely; this changes the pre-1880 1162 times by 2 s. 1163 1164 Changing affecting metadata only: 1165 1166 Fix typos in the entries for country codes BQ and SX. 1167 1168 Changes affecting code: 1169 1170 Rework the code to fix a bug with handling Australia/Macquarie on 1171 32-bit hosts (thanks to Arthur David Olson). 1172 1173 Port to platforms like NetBSD, where time_t can be wider than long. 1174 1175 Add support for testing time_t types other than the system's. 1176 Run 'make check_time_t_alternatives' to try this out. 1177 Currently, the tests fail for unsigned time_t; 1178 this should get fixed at some point. 1179 1180 Changes affecting documentation and commentary: 1181 1182 Deemphasize the significance of national borders. 1183 1184 Update the zdump man page. 1185 1186 Remove obsolete NOID comment (thanks to Denis Excoffier). 1187 1188 Update several URLs and comments in the web pages. 1189 1190 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1191 1192 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1193 1194 1195 Release 2013c - 2013-04-19 16:17:40 -0700 1196 1197 Changes affecting current and future time stamps: 1198 1199 Palestine observed DST starting March 29, 2013. (Thanks to 1200 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1201 with the predicted rules being the last Thursday in March at 24:00 1202 to the first Friday on or after September 21 at 01:00. 1203 1204 Assume that the recent change to Paraguay's DST rules is permanent, 1205 by moving the end of DST to the 4th Sunday in March every year. 1206 (Thanks to Carlos Ral Perasso.) 1207 1208 Changes affecting past time stamps: 1209 1210 Fix some historical data for Palestine to agree with that of 1211 timeanddate.com, as follows: 1212 1213 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1214 00:00 Apr 1. 1215 1216 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1217 02:00. 1218 1219 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1220 1221 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1222 1223 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1224 1225 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1226 1227 Fix times of habitation for Macquarie to agree with the Tasmania 1228 Parks & Wildlife Service history, which indicates that permanent 1229 habitation was 1899-1919 and 1948 on. 1230 1231 Changing affecting metadata only: 1232 1233 Macquarie Island is politically part of Australia, not Antarctica. 1234 (Thanks to Tobias Conradi.) 1235 1236 Sort Macquarie more-consistently with other parts of Australia. 1237 (Thanks to Tim Parenti.) 1238 1239 1240 Release 2013b - 2013-03-10 22:33:40 -0700 1241 1242 Changes affecting current and future time stamps: 1243 1244 Haiti uses US daylight-saving rules this year, and presumably future years. 1245 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1246 1247 Paraguay will end DST on March 24 this year. 1248 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1249 1250 Morocco does not observe DST during Ramadan; 1251 try to predict Ramadan in Morocco as best we can. 1252 (Thanks to Erik Homoet for the heads-up.) 1253 1254 Changes affecting commentary: 1255 1256 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1257 Update URL for Solaris. Mention Internet RFC 6557. 1258 Update Internet RFCs 2445->5545, 2822->5322. 1259 Switch from FTP to HTTP for Internet RFCs. 1260 1261 1262 Release 2013a - 2013-02-27 09:20:35 -0800 1263 1264 Change affecting binary data format: 1265 1266 The zone offset at the end of version-2-format zone files is now 1267 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1268 1269 Changes affecting current and future time stamps: 1270 1271 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1272 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1273 (Thanks to Steffen Thorsen and Robert Elz.) 1274 1275 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1276 (Thanks to Tobias Conradi and Arthur David Olson.) 1277 1278 Many changes affect historical time stamps before 1940. 1279 These were deduced from: Milne J. Civil time. Geogr J. 1899 1280 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1281 1282 Changes affecting the code: 1283 1284 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1285 the data). (Thanks to Arthur David Olson.) 1286 1287 Fix localtime bug when time_t is unsigned and data files were generated 1288 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1289 to Arthur David Olson for fixing.) 1290 1291 Allow the email address for bug reports to be set by the packager. 1292 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 1293 1294 Update HTML checking to be compatible with Ubuntu 12.10. 1295 1296 Check that files are a safe subset of ASCII. At some point we may 1297 relax this requirement to a safe subset of UTF-8. Without the 1298 check, some non-UTF-8 encodings were leaking into the distribution. 1299 1300 Commentary changes: 1301 1302 Restore a comment about copyright notices that was inadvertently deleted. 1303 (Thanks to Arthur David Olson.) 1304 1305 Improve the commentary about which districts observe what times 1306 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1307 1308 Add web page links to tz.js. 1309 1310 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1311 1312 1313 Release 2012j - 2012-11-12 18:34:49 -0800 1314 1315 Libya moved to CET this weekend, but with DST planned next year. 1316 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1317 1318 Signatures now have the extension .asc, not .sign, as that's more 1319 standard. (Thanks to Phil Pennock.) 1320 1321 The output of 'zdump --version', and of 'zic --version', now 1322 uses a format that is more typical for --version. 1323 (Thanks to Joseph S. Myers.) 1324 1325 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1326 now uses tz (a] iana.org rather than the old elsie address. 1327 1328 zic -v now complains about abbreviations that are less than 3 1329 or more than 6 characters, as per Posix. Formerly, it checked 1330 for abbreviations that were more than 3. 1331 1332 'make public' no longer puts its temporary directory under /tmp, 1333 and uses the just-built zic rather than the system zic. 1334 1335 Various fixes to documentation and commentary. 1336 1337 1338 Release 2012i - 2012-11-03 12:57:09 -0700 1339 1340 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1341 1342 Linker flags can now be specified via LDFLAGS. 1343 AWK now defaults to 'awk', not 'nawk'. 1344 The shell in tzselect now defaults to /bin/bash, but this can 1345 be overridden by specifying KSHELL. 1346 The main web page now mentions the unofficial GitHub repository. 1347 (Thanks to Mike Frysinger.) 1348 1349 Tarball signatures can now be built by running 'make signatures'. 1350 There are also new makefile rules 'tarballs', 'check_public', and 1351 separate makefile rules for each tarball and signature file. 1352 A few makefile rules are now more portable to strict POSIX. 1353 1354 The main web page now lists the canonical IANA URL. 1355 1356 1357 Release 2012h - 2012-10-26 22:49:10 -0700 1358 1359 Bahia no longer has DST. (Thanks to Kelley Cook.) 1360 1361 Tocantins has DST. (Thanks to Rodrigo Severo.) 1362 1363 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1364 1365 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1366 1367 Web page updates. 1368 1369 More C modernization, except that at Arthur David Olson's suggestion 1370 the instances of 'register' were kept. 1371 1372 1373 Release 2012g - 2012-10-17 20:59:45 -0700 1374 1375 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1376 1377 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1378 1379 Assume C89. 1380 1381 To attack the version-number problem, this release ships the file 1382 'Makefile' (which contains the release number) in both the tzcode and 1383 the tzdata tarballs. The two Makefiles are identical, and should be 1384 identical in any matching pair of tarballs, so it shouldn't matter 1385 which order you extract the tarballs. Perhaps we can come up with a 1386 better version-number scheme at some point; this scheme does have the 1387 virtue of not adding more files. 1388 1389 1390 Release 2012f - 2012-09-12 23:17:03 -0700 1391 1392 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1393 20 this year. (Thanks to Steffen Thorsen.) 1394 1395 1396 Release 2012e - 2012-08-02 20:44:55 -0700 1397 1398 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1399 (Thanks to Steffen Thorsen.) 1400 1401 * Use a single version number for both code and data. 1402 1403 * .gitignore: New file. 1404 1405 * Remove trailing white space. 1406 1407 1408 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1409 1410 Changes for Morocco's time stamps, which take effect in a couple of 1411 hours, along with infrastructure changes to accommodate how the tz 1412 code and data are released on IANA. 1413 1414 1415 Release data2012c - 2012-03-27 12:17:25 -0400 1416 1417 africa 1418 Summer time changes for Morocco (to start late April 2012) 1419 1420 asia 1421 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1422 1423 northamerica 1424 Haiti following US/Canada rules for 2012 (and we're assuming, 1425 for now anyway, for the future). 1426 1427 1428 Release 2012b - 2012-03-02 12:29:15 +0700 1429 1430 There is just one change to tzcode2012b (compared with 2012a): 1431 the Makefile that was accidentally included with 2012a has been 1432 replaced with the version that should have been there, which is 1433 identical with the previous version (from tzcode2011i). 1434 1435 There are just two changes in tzdata2012b compared with 2012a. 1436 1437 Most significantly, summer time in Cuba has been delayed 3 weeks 1438 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1439 date, as listed in 2012a) is just a little over a week away, this 1440 change is urgent. 1441 1442 Less importantly, an excess tab in one of the changes in zone.tab 1443 in 2012a has been removed. 1444 1445 1446 Release 2012a - 2012-03-01 18:28:10 +0700 1447 1448 The changes in tzcode2012a (compared to the previous version, 2011i) 1449 are entirely to the README and tz-art.htm and tz-link.htm files, if 1450 none of those concern you, you can ignore the code update. The changes 1451 reflect the changed addresses for the mailing list and the code and 1452 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1453 has been added to tz-link.htm). 1454 1455 In tzdata2012a (compared to the previous release, which was 2011n) 1456 the major changes are: 1457 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1458 Falkland Islands onto permanent summer time (we're assuming for the 1459 foreseeable future, though 2012 is all we're fairly certain of.) 1460 Armenia has abolished Summer Time. 1461 Tokelau jumped the International Date Line back last December 1462 (just the same as their near neighbour, Samoa). 1463 America/Creston is a new zone for a small area of British Columbia 1464 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1465 1466 Other minor changes are: 1467 Corrections to 1918 Canadian summer time end dates. 1468 Updated URL for UK time zone history (in comments) 1469 A few typos in Le Corre's list of free French place names (comments) 1470 1471 1472 Release data2011n - 2011-10-30 14:57:54 +0700 1473 1474 There are three changes of note - most urgently, Cuba (America/Havana) 1475 has extended summer time by two weeks, now to end on Nov 13, rather than 1476 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1477 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1478 all, and consequently that zone has been removed (again) and reinstated 1479 in the "backward" file as a link to Europe/Chisinau. And third, the 1480 end date for Fiji's summer time this summer was moved forward from the 1481 earlier planned Feb 26, to Jan 22. 1482 1483 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1484 (and the incorrect syntax that was in the 2011m version of that file 1485 is so fixed - it would have been fixed in a different way had this 1486 change not happened - that's the "missing" sccs version id). 1487 1488 1489 Release data2011m - 2011-10-24 21:42:16 +0700 1490 1491 In particular, the typos in comments in the data (2011-11-17 should have 1492 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1493 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1494 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 1495 Tim Parenti, and also Denys Gavrysh) 1496 1497 In addition, I added Europe/Tiraspol to zone.tab. 1498 1499 This time, all the files have new version numbers... (including the files 1500 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 1501 version numbers there...) 1502 1503 1504 Release data2011l - 2011-10-10 11:15:43 +0700 1505 1506 There are just 2 changes that cause different generated tzdata files from 1507 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 1508 is included, but commented out. Compared with the diff I sent out last week, 1509 this version also includes attributions for the sources for the changes 1510 (in much the same format as ado used, but the html tags have not been 1511 checked, verified, or used in any way at all, so if there are errors there, 1512 please let me know.) 1513 1514 1515 Release data2011k - 2011-09-20 17:54:03 -0400 1516 1517 [not summarized] 1518 1519 1520 Release data2011j - 2011-09-12 09:22:49 -0400 1521 1522 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 1523 Tanzania); there are also two spelling corrections to comments in 1524 the australasia file (with thanks to Christos Zoulas). 1525 1526 1527 Release 2011i - 2011-08-29 05:56:32 -0400 1528 1529 [not summarized] 1530 1531 1532 Release data2011h - 2011-06-15 18:41:48 -0400 1533 1534 Russia and Curaao changes 1535 1536 1537 Release 2011g - 2011-04-25 09:07:22 -0400 1538 1539 update the rules for Egypt to reflect its abandonment of DST this year 1540 1541 1542 Release 2011f - 2011-04-06 17:14:53 -0400 1543 1544 [not summarized] 1545 1546 1547 Release 2011e - 2011-03-31 16:04:38 -0400 1548 1549 Morocco, Chile, and tz-link changes 1550 1551 1552 Release 2011d - 2011-03-14 09:18:01 -0400 1553 1554 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 1555 1556 1557 Release 2011c - 2011-03-07 09:30:09 -0500 1558 1559 These do affect current time stamps in Chile and Annette Island, Canada. 1560 1561 1562 Release 2011b - 2011-02-07 08:44:50 -0500 1563 1564 [not summarized] 1565 1566 1567 Release 2011a - 2011-01-24 10:30:16 -0500 1568 1569 [not summarized] 1570 1571 1572 Release data2010o - 2010-11-01 09:18:23 -0400 1573 1574 change to the end of DST in Fiji in 2011 1575 1576 1577 Release 2010n - 2010-10-25 08:19:17 -0400 1578 1579 [not summarized] 1580 1581 1582 Release 2010m - 2010-09-27 09:24:48 -0400 1583 1584 Hong Kong, Vostok, and zic.c changes 1585 1586 1587 Release 2010l - 2010-08-16 06:57:25 -0400 1588 1589 [not summarized] 1590 1591 1592 Release 2010k - 2010-07-26 10:42:27 -0400 1593 1594 [not summarized] 1595 1596 1597 Release 2010j - 2010-05-10 09:07:48 -0400 1598 1599 changes for Baha de Banderas and for version naming 1600 1601 1602 Release data2010i - 2010-04-16 18:50:45 -0400 1603 1604 the end of DST in Morocco on 2010-08-08 1605 1606 1607 Release data2010h - 2010-04-05 09:58:56 -0400 1608 1609 [not summarized] 1610 1611 1612 Release data2010g - 2010-03-24 11:14:53 -0400 1613 1614 [not summarized] 1615 1616 1617 Release 2010f - 2010-03-22 09:45:46 -0400 1618 1619 [not summarized] 1620 1621 1622 Release data2010e - 2010-03-08 14:24:27 -0500 1623 1624 corrects the Dhaka bug found by Danvin Ruangchan 1625 1626 1627 Release data2010d - 2010-03-06 07:26:01 -0500 1628 1629 [not summarized] 1630 1631 1632 Release 2010c - 2010-03-01 09:20:58 -0500 1633 1634 changes including KRE's suggestion for earlier initialization of 1635 "goahead" and "goback" structure elements 1636 1637 1638 Release code2010a - 2010-02-16 10:40:04 -0500 1639 1640 [not summarized] 1641 1642 1643 Release data2010b - 2010-01-20 12:37:01 -0500 1644 1645 Mexico changes 1646 1647 1648 Release data2010a - 2010-01-18 08:30:04 -0500 1649 1650 changes to Dhaka 1651 1652 1653 Release data2009u - 2009-12-26 08:32:28 -0500 1654 1655 changes to DST in Bangladesh 1656 1657 1658 Release 2009t - 2009-12-21 13:24:27 -0500 1659 1660 [not summarized] 1661 1662 1663 Release data2009s - 2009-11-14 10:26:32 -0500 1664 1665 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 1666 1667 1668 Release 2009r - 2009-11-09 10:10:31 -0500 1669 1670 "antarctica" and "tz-link.htm" changes 1671 1672 1673 Release 2009q - 2009-11-02 09:12:40 -0500 1674 1675 with two corrections as reported by Eric Muller and Philip Newton 1676 1677 1678 Release data2009p - 2009-10-23 15:05:27 -0400 1679 1680 Argentina (including San Luis) changes (with the correction from 1681 Mariano Absatz) 1682 1683 1684 Release data2009o - 2009-10-14 16:49:38 -0400 1685 1686 Samoa (commentary only), Pakistan, and Bangladesh changes 1687 1688 1689 Release data2009n - 2009-09-22 15:13:38 -0400 1690 1691 added commentary for Argentina and a change to the end of DST in 1692 2009 in Pakistan 1693 1694 1695 Release data2009m - 2009-09-03 10:23:43 -0400 1696 1697 Samoa and Palestine changes 1698 1699 1700 Release data2009l - 2009-08-14 09:13:07 -0400 1701 1702 Samoa (comments only) and Egypt 1703 1704 1705 Release 2009k - 2009-07-20 09:46:08 -0400 1706 1707 [not summarized] 1708 1709 1710 Release data2009j - 2009-06-15 06:43:59 -0400 1711 1712 Bangladesh change (with a short turnaround since the DST change is 1713 impending) 1714 1715 1716 Release 2009i - 2009-06-08 09:21:22 -0400 1717 1718 updating for DST in Bangladesh this year 1719 1720 1721 Release 2009h - 2009-05-26 09:19:14 -0400 1722 1723 [not summarized] 1724 1725 1726 Release data2009g - 2009-04-20 16:34:07 -0400 1727 1728 Cairo 1729 1730 1731 Release data2009f - 2009-04-10 11:00:52 -0400 1732 1733 correct DST in Pakistan 1734 1735 1736 Release 2009e - 2009-04-06 09:08:11 -0400 1737 1738 [not summarized] 1739 1740 1741 Release 2009d - 2009-03-23 09:38:12 -0400 1742 1743 Morocco, Tunisia, Argentina, and American Astronomical Society changes 1744 1745 1746 Release data2009c - 2009-03-16 09:47:51 -0400 1747 1748 change to the start of Cuban DST 1749 1750 1751 Release 2009b - 2009-02-09 11:15:22 -0500 1752 1753 [not summarized] 1754 1755 1756 Release 2009a - 2009-01-21 10:09:39 -0500 1757 1758 [not summarized] 1759 1760 1761 Release data2008i - 2008-10-21 12:10:25 -0400 1762 1763 southamerica and zone.tab files, with Argentina DST rule changes and 1764 United States zone reordering and recommenting 1765 1766 1767 Release 2008h - 2008-10-13 07:33:56 -0400 1768 1769 [not summarized] 1770 1771 1772 Release 2008g - 2008-10-06 09:03:18 -0400 1773 1774 Fix a broken HTML anchor and update Brazil's DST transitions; 1775 there's also a slight reordering of information in tz-art.htm. 1776 1777 1778 Release data2008f - 2008-09-09 22:33:26 -0400 1779 1780 [not summarized] 1781 1782 1783 Release 2008e - 2008-07-28 14:11:17 -0400 1784 1785 changes by Arthur David Olson and Jesper Nrgaard Welen 1786 1787 1788 Release data2008d - 2008-07-07 09:51:38 -0400 1789 1790 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 1791 1792 1793 Release data2008c - 2008-05-19 17:48:03 -0400 1794 1795 Pakistan, Morocco, and Mongolia 1796 1797 1798 Release data2008b - 2008-03-24 08:30:59 -0400 1799 1800 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 1801 link provided 1802 1803 1804 Release 2008a - 2008-03-08 05:42:16 -0500 1805 1806 [not summarized] 1807 1808 1809 Release 2007k - 2007-12-31 10:25:22 -0500 1810 1811 most importantly, changes to the "southamerica" file based on 1812 Argentina's readoption of daylight saving time 1813 1814 1815 Release 2007j - 2007-12-03 09:51:01 -0500 1816 1817 1. eliminate the "P" (parameter) macro; 1818 1819 2. the "noncontroversial" changes circulated on the time zone 1820 mailing list (less the changes to "logwtmp.c"); 1821 1822 3. eliminate "too many transition" errors when "min" is used in time 1823 zone rules; 1824 1825 4. changes by Paul Eggert (including updated information for Venezuela). 1826 1827 1828 Release data2007i - 2007-10-30 10:28:11 -0400 1829 1830 changes for Cuba and Syria 1831 1832 1833 Release 2007h - 2007-10-01 10:05:51 -0400 1834 1835 changes by Paul Eggert, as well as an updated link to the ICU 1836 project in tz-link.htm 1837 1838 1839 Release 2007g - 2007-08-20 10:47:59 -0400 1840 1841 changes by Paul Eggert 1842 1843 The "leapseconds" file has been updated to incorporate the most 1844 recent International Earth Rotation and Reference Systems Service 1845 (IERS) bulletin. 1846 1847 There's an addition to tz-art.htm regarding the television show "Medium". 1848 1849 1850 Release 2007f - 2007-05-07 10:46:46 -0400 1851 1852 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 1853 Zealand) 1854 1855 changes to zic.c to allow hour values greater than 24 (along with 1856 Paul's improved time value overflow checking) 1857 1858 1859 Release 2007e - 2007-04-02 10:11:52 -0400 1860 1861 Syria and Honduras changes by Paul Eggert 1862 1863 zic.c variable renaming changes by Arthur David Olson 1864 1865 1866 Release 2007d - 2007-03-20 08:48:30 -0400 1867 1868 changes by Paul Eggert 1869 1870 the elimination of white space at the ends of lines 1871 1872 1873 Release 2007c - 2007-02-26 09:09:37 -0500 1874 1875 changes by Paul Eggert 1876 1877 1878 Release 2007b - 2007-02-12 09:34:20 -0500 1879 1880 Paul Eggert's proposed change to the quotation handling logic in zic.c. 1881 1882 changes to the commentary in "leapseconds" reflecting the IERS 1883 announcement that there is to be no positive leap second at the end 1884 of June 2007. 1885 1886 1887 Release 2007a - 2007-01-08 12:28:29 -0500 1888 1889 changes by Paul Eggert 1890 1891 Derick Rethan's Asmara change 1892 1893 Oscar van Vlijmen's Easter Island local mean time change 1894 1895 symbolic link changes 1896 1897 1898 Release 2006p - 2006-11-27 08:54:27 -0500 1899 1900 changes by Paul Eggert 1901 1902 1903 Release 2006o - 2006-11-06 09:18:07 -0500 1904 1905 changes by Paul Eggert 1906 1907 1908 Release 2006n - 2006-10-10 11:32:06 -0400 1909 1910 changes by Paul Eggert 1911 1912 1913 Release 2006m - 2006-10-02 15:32:35 -0400 1914 1915 changes for Uruguay, Palestine, and Egypt by Paul Eggert 1916 1917 (minimalist) changes to zic.8 to clarify "until" information 1918 1919 1920 Release data2006l - 2006-09-18 12:58:11 -0400 1921 1922 Paul's best-effort work on this coming weekend's Egypt time change 1923 1924 1925 Release 2006k - 2006-08-28 12:19:09 -0400 1926 1927 changes by Paul Eggert 1928 1929 1930 Release 2006j - 2006-08-21 09:56:32 -0400 1931 1932 changes by Paul Eggert 1933 1934 1935 Release code2006i - 2006-08-07 12:30:55 -0400 1936 1937 localtime.c fixes 1938 1939 Ken Pizzini's conversion script 1940 1941 1942 Release code2006h - 2006-07-24 09:19:37 -0400 1943 1944 adds public domain notices to four files 1945 1946 includes a fix for transition times being off by a second 1947 1948 adds a new recording to the "arts" file (information courtesy Colin Bowern) 1949 1950 1951 Release 2006g - 2006-05-08 17:18:09 -0400 1952 1953 northamerica changes by Paul Eggert 1954 1955 1956 Release 2006f - 2006-05-01 11:46:00 -0400 1957 1958 a missing version number problem is fixed (with thanks to Bradley 1959 White for catching the problem) 1960 1961 1962 Release 2006d - 2006-04-17 14:33:43 -0400 1963 1964 changes by Paul Eggert 1965 1966 added new items to tz-arts.htm that were found by Paul 1967 1968 1969 Release 2006c - 2006-04-03 10:09:32 -0400 1970 1971 two sets of data changes by Paul Eggert 1972 1973 a fencepost error fix in zic.c 1974 1975 changes to zic.c and the "europe" file to minimize differences 1976 between output produced by the old 32-bit zic and the new 64-bit 1977 version 1978 1979 1980 Release 2006b - 2006-02-20 10:08:18 -0500 1981 [tz32code2006b + tz64code2006b + tzdata2006b] 1982 1983 64-bit code 1984 1985 All SCCS IDs were bumped to "8.1" for this release. 1986 1987 1988 Release 2006a - 2006-01-30 08:59:31 -0500 1989 1990 changes by Paul Eggert (in particular, Indiana time zone moves) 1991 1992 an addition to the zic manual page to describe how special-case 1993 transitions are handled 1994 1995 1996 Release 2005r - 2005-12-27 09:27:13 -0500 1997 1998 Canadian changes by Paul Eggert 1999 2000 They also add "<pre>" directives to time zone data files and reflect 2001 changes to warning message logic in "zdump.c" (but with calls to 2002 "gettext" kept unbundled at the suggestion of Ken Pizzini). 2003 2004 2005 Release 2005q - 2005-12-13 09:17:09 -0500 2006 2007 Nothing earth-shaking here: 2008 1. Electronic mail addresses have been removed. 2009 2. Casts of the return value of exit have been removed. 2010 3. Casts of the argument of is.* macros have been added. 2011 4. Indentation in one section of zic.c has been fixed. 2012 5. References to dead URLs in the data files have been dealt with. 2013 2014 2015 Release 2005p - 2005-12-05 10:30:53 -0500 2016 2017 "systemv", "tz-link.htm", and "zdump.c" changes 2018 (less the casts of arguments to the is* macros) 2019 2020 2021 Release 2005o - 2005-11-28 10:55:26 -0500 2022 2023 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 2024 2025 zdump.c lint fixes by Arthur David Olson 2026 2027 2028 Release 2005n - 2005-10-03 09:44:09 -0400 2029 2030 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 2031 et al. changes) 2032 2033 2034 Release 2005m - 2005-08-29 12:15:40 -0400 2035 2036 changes by Paul Eggert (with a small tweak to the tz-art change) 2037 2038 a declaration of an unused variable has been removed from zdump.c 2039 2040 2041 Release 2005l - 2005-08-22 12:06:39 -0400 2042 2043 changes by Paul Eggert 2044 2045 overflow/underflow checks by Arthur David Olson, minus changes to 2046 the "Theory" file about the pending addition of 64-bit data (I grow 2047 less confident of the changes being accepted with each passing day, 2048 and the changes no longer increase the data files nine-fold--there's 2049 less than a doubling in size by my local Sun's reckoning) 2050 2051 2052 Release 2005k - 2005-07-14 14:14:24 -0400 2053 2054 The "leapseconds" file has been edited to reflect the recently 2055 announced leap second at the end of 2005. 2056 2057 I've also deleted electronic mail addresses from the files as an 2058 anti-spam measure. 2059 2060 2061 Release 2005j - 2005-06-13 14:34:13 -0400 2062 2063 These reflect changes to limit the length of time zone abbreviations 2064 and the characters used in those abbreviations. 2065 2066 There are also changes to handle POSIX-style "quoted" time zone 2067 environment variables. 2068 2069 The changes were circulated on the time zone mailing list; the only 2070 change since then was the removal of a couple of minimum-length of 2071 abbreviation checks. 2072 2073 2074 Release data2005i - 2005-04-21 15:04:16 -0400 2075 2076 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 2077 2078 2079 Release 2005h - 2005-04-04 11:24:47 -0400 2080 2081 changes by Paul Eggert 2082 2083 minor changes to Makefile and zdump.c to produce more useful output 2084 when doing a "make typecheck" 2085 2086 2087 Release 2005g - 2005-03-14 10:11:21 -0500 2088 2089 changes by Paul Eggert (a change to current DST rules in Uruguay and 2090 an update to a link to time zone software) 2091 2092 2093 Release 2005f - 2005-03-01 08:45:32 -0500 2094 2095 data and documentation changes by Paul Eggert 2096 2097 2098 Release 2005e - 2005-02-10 15:59:44 -0500 2099 2100 [not summarized] 2101 2102 2103 Release code2005d - 2005-01-31 09:21:47 -0500 2104 2105 make zic complain about links to links if the -v flag is used 2106 2107 have "make public" do more code checking 2108 2109 add an include to "localtime.c" for the benefit of gcc systems 2110 2111 2112 Release 2005c - 2005-01-17 18:36:29 -0500 2113 2114 get better results when mktime runs on a system where time_t is double 2115 2116 changes to the data files (most importantly to Paraguay) 2117 2118 2119 Release 2005b - 2005-01-10 09:19:54 -0500 2120 2121 Get localtime and gmtime working on systems with exotic time_t types. 2122 2123 Update the leap second commentary in the "leapseconds" file. 2124 2125 2126 Release 2005a - 2005-01-01 13:13:44 -0500 2127 2128 [not summarized] 2129 2130 2131 Release code2004i - 2004-12-14 13:42:58 -0500 2132 2133 Deal with systems where time_t is unsigned. 2134 2135 2136 Release code2004h - 2004-12-07 11:40:18 -0500 2137 2138 64-bit-time_t changes 2139 2140 2141 Release 2004g - 2004-11-02 09:06:01 -0500 2142 2143 update to Cuba (taking effect this weekend) 2144 2145 other changes by Paul Eggert 2146 2147 correction of the spelling of Oslo 2148 2149 changed versions of difftime.c and private.h 2150 2151 2152 Release code2004f - 2004-10-21 10:25:22 -0400 2153 2154 Cope with wide-ranging tm_year values. 2155 2156 2157 Release 2004e - 2004-10-11 14:47:21 -0400 2158 2159 Brazil/Argentina/Israel changes by Paul Eggert 2160 2161 changes to tz-link.htm by Paul 2162 2163 one small fix to Makefile 2164 2165 2166 Release 2004d - 2004-09-22 08:27:29 -0400 2167 2168 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2169 2170 2171 Release 2004c - 2004-08-11 12:06:26 -0400 2172 2173 asctime-related changes 2174 2175 (variants of) some of the documentation changes suggested by Paul Eggert 2176 2177 2178 Release 2004b - 2004-07-19 14:33:35 -0400 2179 2180 data changes by Paul Eggert - most importantly, updates for Argentina 2181 2182 2183 Release 2004a - 2004-05-27 12:00:47 -0400 2184 2185 changes by Paul Eggert 2186 2187 Handle DST transitions that occur at the end of a month in some 2188 years but at the start of the following month in other years. 2189 2190 Add a copy of the correspondence that's the basis for claims about 2191 DST in the Navajo Nation. 2192 2193 2194 Release 2003e - 2003-12-15 09:36:47 -0500 2195 2196 changes by Arthur David Olson (primarily code changes) 2197 2198 changes by Paul Eggert (primarily data changes) 2199 2200 minor changes to "Makefile" and "northamerica" (in the latter case, 2201 optimization of the "Toronto" rules) 2202 2203 2204 Release 2003d - 2003-10-06 09:34:44 -0400 2205 2206 changes by Paul Eggert 2207 2208 2209 Release 2003c - 2003-09-16 10:47:05 -0400 2210 2211 Fix bad returns in zic.c's inleap function. 2212 Thanks to Bradley White for catching the problem! 2213 2214 2215 Release 2003b - 2003-09-16 07:13:44 -0400 2216 2217 Add a "--version" option (and documentation) to the zic and zdump commands. 2218 2219 changes to overflow/underflow checking in zic 2220 2221 a localtime typo fix. 2222 2223 Update the leapseconds and tz-art.htm files. 2224 2225 2226 Release 2003a - 2003-03-24 09:30:54 -0500 2227 2228 changes by Paul Eggert 2229 2230 a few additions and modifications to the tz-art.htm file 2231 2232 2233 Release 2002d - 2002-10-15 13:12:42 -0400 2234 2235 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2236 2237 There's also a new time zone quote in "tz-art.htm". 2238 2239 2240 Release 2002c - 2002-04-04 11:55:20 -0500 2241 2242 changes by Paul Eggert 2243 2244 Change zic.c to avoid creating symlinks to files that don't exist. 2245 2246 2247 Release 2002b - 2002-01-28 12:56:03 -0500 2248 2249 [These change notes are for Release 2002a, which was corrupted. 2250 2002b was a corrected version of 2002a.] 2251 2252 changes by Paul Eggert 2253 2254 Update the "leapseconds" file to note that there'll be no leap 2255 second at the end of June, 2002. 2256 2257 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2258 2259 Change to "difftime.c" to avoid sizeof problems. 2260 2261 2262 Release 2001d - 2001-10-09 13:31:32 -0400 2263 2264 changes by Paul Eggert 2265 2266 2267 Release 2001c - 2001-06-05 13:59:55 -0400 2268 2269 changes by Paul Eggert and Andrew Brown 2270 2271 2272 Release 2001b - 2001-04-05 16:44:38 -0400 2273 2274 changes by Paul Eggert (modulo jnorgard's typo fix) 2275 2276 tz-art.htm has been HTMLified. 2277 2278 2279 Release 2001a - 2001-03-13 12:57:44 -0500 2280 2281 changes by Paul Eggert 2282 2283 An addition to the "leapseconds" file: comments with the text of the 2284 latest IERS leap second notice. 2285 2286 Trailing white space has been removed from data file lines, and 2287 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2288 converted to tabs. 2289 2290 2291 Release 2000h - 2000-12-14 15:33:38 -0500 2292 2293 changes by Paul Eggert 2294 2295 one typo fix in the "art" file 2296 2297 With providence, this is the last update of the millennium. 2298 2299 2300 Release 2000g - 2000-10-10 11:35:22 -0400 2301 2302 changes by Paul Eggert 2303 2304 correction of John Mackin's name submitted by Robert Elz 2305 2306 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2307 Emmy Awards broadcast. 2308 2309 2310 Release 2000f - 2000-08-10 09:31:58 -0400 2311 2312 changes by Paul Eggert 2313 2314 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2315 2316 Error checking and messages in the "yearistype" script have been 2317 improved. 2318 2319 2320 Release 2000e - 2000-07-31 09:27:54 -0400 2321 2322 data changes by Paul Eggert 2323 2324 a change to the default value of the defined constant HAVE_STRERROR 2325 2326 the addition of a Dave Barry quote on DST to the tz-arts file 2327 2328 2329 Release 2000d - 2000-04-20 15:43:04 -0400 2330 2331 changes to the documentation and code of strftime for C99 conformance 2332 2333 a bug fix for date.c 2334 2335 These are based on (though modified from) changes by Paul Eggert. 2336 2337 2338 Release 2000c - 2000-03-04 10:31:43 -0500 2339 2340 changes by Paul Eggert 2341 2342 2343 Release 2000b - 2000-02-21 12:16:29 -0500 2344 2345 changes by Paul Eggert and Joseph Myers 2346 2347 modest tweaks to the tz-art.htm and tz-link.htm files 2348 2349 2350 Release 2000a - 2000-01-18 09:21:26 -0500 2351 2352 changes by Paul Eggert 2353 2354 The two hypertext documents have also been renamed. 2355 2356 2357 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2358 2359 Paul Eggert's changes 2360 2361 additions to the "zic" manual page and the "Arts.htm" file 2362 2363 2364 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2365 2366 [not summarized] 2367 2368 2369 Release data1999h - 1999-10-07 03:50:29 -0400 2370 2371 changes by Paul Eggert to "europe" (most importantly, fixing 2372 Lithuania and Estonia) 2373 2374 2375 Release 1999g - 1999-09-28 11:06:18 -0400 2376 2377 data changes by Paul Eggert (most importantly, the change for 2378 Lebanon that buys correctness for this coming Sunday) 2379 2380 The "code" file contains changes to "Makefile" and "checktab.awk" to 2381 allow better checking of time zone files before they are published. 2382 2383 2384 Release 1999f - 1999-09-23 09:48:14 -0400 2385 2386 changes by Arthur David Olson and Paul Eggert 2387 2388 2389 Release 1999e - 1999-08-17 15:20:54 -0400 2390 2391 changes circulated by Paul Eggert, although the change to handling 2392 of DST-specifying time zone names has been commented out for now 2393 (search for "XXX" in "localtime.c" for details). These files also 2394 do not make any changes to the start of DST in Brazil. 2395 2396 In addition to Paul's changes, there are updates to "Arts.htm" and 2397 cleanups of URLs. 2398 2399 2400 Release 1999d - 1999-03-30 11:31:07 -0500 2401 2402 changes by Paul Eggert 2403 2404 The Makefile's "make public" rule has also been changed to do a test 2405 compile of each individual time zone data file (which should help 2406 avoid problems such as the one we had with Nicosia). 2407 2408 2409 Release 1999c - 1999-03-25 09:47:47 -0500 2410 2411 changes by Paul Eggert, most importantly the change for Chile. 2412 2413 2414 Release 1999b - 1999-02-01 17:51:44 -0500 2415 2416 changes by Paul Eggert 2417 2418 code changes (suggested by Mani Varadarajan, mani at be.com) for 2419 correct handling of symbolic links when building using a relative directory 2420 2421 code changes to generate correct messages for failed links 2422 2423 updates to the URLs in Arts.htm 2424 2425 2426 Release 1999a - 1999-01-19 16:20:29 -0500 2427 2428 error message internationalizations and corrections in zic.c and 2429 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2430 to whom thanks!) 2431 2432 2433 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2434 2435 changes for Brazil, Chile, and Germany 2436 2437 support for use of "24:00" in the input files for the time zone compiler 2438 2439 2440 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2441 2442 changes by Paul Eggert 2443 2444 correction to a define in the "private.h" file 2445 2446 2447 Release data1998g - 1998-08-11 03:28:35 -0000 2448 [tzdata1998g.tar.gz is missing!] 2449 2450 Lithuanian change provided by mgedmin at pub.osf.it 2451 2452 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2453 "backward") to ensure that the GMT file is created even where folks 2454 don't want the "backward" links (as suggested by Paul Eggert). 2455 2456 2457 Release data1998f - 1998-07-20 13:50:00 -0000 2458 [tzdata1998f.tar.gz is missing!] 2459 2460 Update the "leapseconds" file to include the newly-announced 2461 insertion at the end of 1998. 2462 2463 2464 Release code1998f - 1998-06-01 10:18:31 -0400 2465 2466 addition to localtime.c by Guy Harris 2467 2468 2469 Release 1998e - 1998-05-28 09:56:26 -0400 2470 2471 The Makefile is changed to produce zoneinfo-posix rather than 2472 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2473 zoneinfo/right. 2474 2475 data changes by Paul Eggert 2476 2477 changes from Guy Harris to provide asctime_r and ctime_r 2478 2479 A usno1998 file (substantially identical to usno1997) has been added. 2480 2481 2482 Release 1998d - 1998-05-14 11:58:34 -0400 2483 2484 changes to comments (in particular, elimination of references to CIA maps). 2485 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2486 where changes occur. 2487 2488 2489 Release 1998c - 1998-02-28 12:32:26 -0500 2490 2491 changes by Paul Eggert (save the "French correction," on which I'll 2492 wait for the dust to settle) 2493 2494 symlink changes 2495 2496 changes and additions to Arts.htm 2497 2498 2499 Release 1998b - 1998-01-17 14:31:51 -0500 2500 2501 URL cleanups and additions 2502 2503 2504 Release 1998a - 1998-01-13 12:37:35 -0500 2505 2506 changes by Paul Eggert 2507 2508 2509 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 2510 2511 changes by Paul Eggert, with minor modifications from Arthur David 2512 Olson to make the files more browser friendly 2513 2514 2515 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 2516 2517 minor changes to put "TZif" at the start of each time zone information file 2518 2519 a rule has also been added to the Makefile so you can 2520 make zones 2521 to just recompile the zone information files (rather than doing a 2522 full "make install" with its other effects). 2523 2524 2525 Release data1997i - 1997-10-07 08:45:38 -0400 2526 2527 changes to Africa by Paul Eggert 2528 2529 2530 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 2531 2532 corrections for Uruguay (and other locations) 2533 2534 Arthur David Olson's simple-minded fix allowing mktime to both 2535 correctly handle leap seconds and correctly handle tm_sec values 2536 upon which arithmetic has been performed. 2537 2538 2539 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 2540 2541 Paul Eggert's updates 2542 2543 a small change to a function prototype; 2544 2545 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 2546 include information on Around the World in Eighty Days. 2547 2548 2549 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 2550 2551 fixes to zic's error handling 2552 2553 changes inspired by the item circulated on Slovenia 2554 2555 The description of Web resources has been HTMLified for browsing 2556 convenience. 2557 2558 A new piece of tz-related music has been added to the "Music" file. 2559 2560 2561 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 2562 2563 Paul Eggert's latest suggestions 2564 2565 2566 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 2567 2568 changes to "zic.c" to correct performance of the "-s" option 2569 2570 a new file "usno1997" 2571 2572 2573 Release data1997c - 1997-03-04 09:58:18 -0500 2574 2575 changes in Israel 2576 2577 2578 Release 1997b - 1997-02-27 18:34:19 -0500 2579 2580 The data file incorporates the 1997 leap second. 2581 2582 The code file incorporates Arthur David Olson's take on the 2583 zic/multiprocessor/directory-creation situation. 2584 2585 2586 Release 1997a - 1997-01-21 09:11:10 -0500 2587 2588 Paul Eggert's Antarctica (and other changes) 2589 2590 Arthur David Olson finessed the "getopt" issue by checking against 2591 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 2592 is returned while SunOS 5.5's manual says EOF is returned). 2593 2594 2595 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 2596 2597 Paul Eggert's latest changes 2598 2599 2600 Release code1996n - 1996-12-16 09:42:02 -0500 2601 2602 link snapping fix from Bruce Evans (via Garrett Wollman) 2603 2604 2605 Release data1996m - 1996-11-24 02:37:34 -0000 2606 [tzdata1996m.tar.gz is missing!] 2607 2608 Paul Eggert's batch of changes 2609 2610 2611 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 2612 2613 No functional changes here; the files have simply been changed to 2614 make more use of ISO style dates in comments. The names of the above 2615 files now include the year in full. 2616 2617 2618 Release code96l - 1996-09-08 17:12:20 -0400 2619 2620 tzcode96k was missing a couple of pieces. 2621 2622 2623 Release 96k - 1996-09-08 16:06:22 -0400 2624 2625 the latest round of changes from Paul Eggert 2626 2627 the recent Year 2000 material 2628 2629 2630 Release code96j - 1996-07-30 13:18:53 -0400 2631 2632 Set sp->typecnt as suggested by Timothy Patrick Murphy. 2633 2634 2635 Release code96i - 1996-07-27 20:11:35 -0400 2636 2637 Paul's suggested patch for strftime %V week numbers 2638 2639 2640 Release data96i - 1996-07-01 18:13:04 -0400 2641 2642 "northamerica" and "europe" changes by Paul Eggert 2643 2644 2645 Release code96h - 1996-06-05 08:02:21 -0400 2646 2647 fix for handling transitions specified in Universal Time 2648 2649 Some "public domain" notices have also been added. 2650 2651 2652 Release code96g - 1996-05-16 14:00:26 -0400 2653 2654 fix for the simultaneous-DST-and-zone-change challenge 2655 2656 2657 Release data96h - 1996-05-09 17:40:51 -0400 2658 2659 changes by Paul Eggert 2660 2661 2662 Release code96f-data96g - 1996-05-03 03:09:59 -0000 2663 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 2664 2665 The changes get us some of the way to fixing the problems noted in Paul 2666 Eggert's letter yesterday (in addition to a few others). The approach 2667 has been to make zic a bit smarter about figuring out what time zone 2668 abbreviations apply just after the time specified in the "UNTIL" part 2669 of a zone line. Putting the smarts in zic means avoiding having 2670 transition times show up in both "Zone" lines and "Rule" lines, which 2671 in turn avoids multiple transition time entries in time zone files. 2672 (This also makes the zic input files such as "europe" a bit shorter and 2673 should ease maintenance.) 2674 2675 2676 Release data96f - 1996-04-19 19:20:03 -0000 2677 [tzdata96f.tar.gz is missing!] 2678 2679 The only changes are to the "northamerica" file; the time zone 2680 abbreviation for Denver is corrected to MST (and MDT), and the 2681 comments for Mexico have been updated. 2682 2683 2684 Release data96e - 1996-03-19 17:37:26 -0500 2685 2686 Proposals by Paul Eggert, in particular the Portugal change that 2687 comes into play at the end of this month. 2688 2689 2690 Release data96d - 1996-03-18 20:49:39 -0500 2691 2692 [not summarized] 2693 2694 2695 Release code96e - 1996-02-29 15:43:27 -0000 2696 [tzcode96e.tar.gz is missing!] 2697 2698 internationalization changes and the fix to the documentation for strftime 2699 2700 2701 Release code96d-data96c - 1996-02-12 11:05:27 -0500 2702 2703 The "code" file simply updates Bob Kridle's electronic address. 2704 2705 The "data" file updates rules for Mexico. 2706 2707 2708 Release data96b - 1996-01-27 15:44:42 -0500 2709 2710 Kiribati change 2711 2712 2713 Release code96c - 1996-01-16 16:58:15 -0500 2714 2715 leap-year streamlining and binary-search changes 2716 2717 fix to newctime.3 2718 2719 2720 Release code96b - 1996-01-10 20:42:39 -0500 2721 2722 fixes and enhancements from Paul Eggert, including code that 2723 emulates the behavior of recent versions of the SunOS "date" 2724 command. 2725 2726 2727 Release 96a - 1996-01-06 09:08:24 -0500 2728 2729 Israel updates 2730 2731 fixes to strftime.c for correct ISO 8601 week number generation, 2732 plus support for two new formats ('G' and 'g') to give ISO 8601 year 2733 numbers (which are not necessarily the same as calendar year numbers) 2734 2735 2736 Release code95i-data95m - 1995-12-21 12:46:47 -0500 2737 2738 The latest revisions from Paul Eggert are included, the usno1995 2739 file has been updated, and a new file ("WWW") covering useful URLs 2740 has been added. 2741 2742 2743 Release code95h-data95l - 1995-12-19 18:10:12 -0500 2744 2745 A simplification of a macro definition, a change to data for Sudan, 2746 and (for last minute shoppers) notes in the "Music" file on the CD 2747 "Old Man Time". 2748 2749 2750 Release code95g-data95k - 1995-10-30 10:32:47 -0500 2751 2752 (slightly reformatted) 8-bit-clean proposed patch 2753 2754 minor patch: US/Eastern -> America/New_York 2755 2756 snapshot of the USNO's latest data ("usno1995") 2757 2758 some other minor cleanups 2759 2760 2761 Release code95f-data95j - 1995-10-28 21:01:34 -0000 2762 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 2763 2764 European cleanups 2765 2766 support for 64-bit time_t's 2767 2768 optimization in localtime.c 2769 2770 2771 Release code95e - 1995-10-13 13:23:57 -0400 2772 2773 the mktime change to scan from future to past when trying to find time zone 2774 offsets 2775 2776 2777 Release data95i - 1995-09-26 10:43:26 -0400 2778 2779 For Canada/Central, guess that the Sun customer's "one week too 2780 early" was just a approximation, and the true error is one month 2781 too early. This is consistent with the rest of Canada. 2782 2783 2784 Release data95h - 1995-09-21 11:26:48 -0400 2785 2786 latest changes from Paul Eggert 2787 2788 2789 Release code95d - 1995-09-14 11:14:45 -0400 2790 2791 the addition of a "Music" file, which documents four recorded 2792 versions of the tune "Save That Time". 2793 2794 2795 Release data95g - 1995-09-01 17:21:36 -0400 2796 2797 "yearistype" correction 2798 2799 2800 Release data95f - 1995-08-28 20:46:56 -0400 2801 2802 Paul Eggert's change to the australasia file 2803 2804 2805 Release data95e - 1995-07-08 18:02:34 -0400 2806 2807 The only change is a leap second at the end of this year. 2808 Thanks to Bradley White for forwarding news on the leap second. 2809 2810 2811 Release data95d - 1995-07-03 13:26:22 -0400 2812 2813 Paul Eggert's changes 2814 2815 2816 Release data95c - 1995-07-02 19:19:28 -0400 2817 2818 changes to "asia", "backward", "europe", and "southamerica" 2819 (read: northamericacentrics need not apply) 2820 2821 2822 Release code95c - 1995-03-13 14:00:46 -0500 2823 2824 one-line fix for sign extension problems in detzcode 2825 2826 2827 Release 95b - 1995-03-04 11:22:38 -0500 2828 2829 Minor changes in both: 2830 2831 The "code" file contains a workaround for the lack of "unistd.h" in 2832 Microsoft C++ version 7. 2833 2834 The "data" file contains a fixed "Link" for America/Shiprock. 2835 2836 2837 Release 94h - 1994-12-10 12:51:14 -0500 2838 2839 The files: 2840 2841 * incorporate the changes to "zdump" and "date" to make changes to 2842 the "TZ" environment variable permanent; 2843 2844 * incorporate the table changes by Paul Eggert; 2845 2846 * include (and document) support for universal time specifications in 2847 data files - but do not (yet) include use of this feature in the 2848 data files. 2849 2850 Think of this as "TZ Classic" - the software has been set up not to break if 2851 universal time shows up in its input, and data entries have been 2852 left as is so as not to break existing implementations. 2853 2854 2855 Release data94f - 1994-08-20 12:56:09 -0400 2856 2857 (with thanks!) the latest data updates from Paul Eggert 2858 2859 2860 Release data94e - 1994-06-04 13:13:53 -0400 2861 2862 [not summarized] 2863 2864 2865 Release code94g - 1994-05-05 12:14:07 -0400 2866 2867 fix missing "optind.c" and a reference to it in the Makefile 2868 2869 2870 Release code94f - 1994-05-05 13:00:33 -0000 2871 [tzcode94f.tar.gz is missing!] 2872 2873 changes to avoid overflow in difftime, as well as changes to cope 2874 with the 52/53 challenge in strftime 2875 2876 2877 Release code94e - 1994-03-30 23:32:59 -0500 2878 2879 change for the benefit of PCTS 2880 2881 2882 Release 94d - 1994-02-24 15:42:25 -0500 2883 2884 Avoid clashes with POSIX semantics for zones such as GMT+4. 2885 2886 Some other very minor housekeeping is also present. 2887 2888 2889 Release code94c - 1994-02-10 08:52:40 -0500 2890 2891 Fix bug where mkdirs was broken unless you compile with 2892 -fwritable-strings (which is generally losing to do). 2893 2894 2895 Release 94b - 1994-02-07 10:04:33 -0500 2896 2897 work by Paul Eggert who notes: 2898 2899 I found another book of time zone histories by E W Whitman; it's not 2900 as extensive as Shanks but has a few goodies of its own. I used it 2901 to update the tables. I also fixed some more as a result of 2902 correspondence with Adam David and Peter Ilieve, and move some stray 2903 links from 'europe' to 'backward'. I corrected some scanning errors 2904 in usno1989. 2905 2906 As far as the code goes, I fixed zic to allow years in the range 2907 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 2908 And I cleaned up the zic documentation a little bit. 2909 2910 2911 Release data94a - 1994-02-03 08:58:54 -0500 2912 2913 It simply incorporates the recently announced leap second into the 2914 "leapseconds" file. 2915 2916 2917 Release 93g - 1993-11-22 17:28:27 -0500 2918 2919 Paul Eggert has provided a good deal of historic information (based 2920 on Shanks), and there are some code changes to deal with the buglets 2921 that crawled out in dealing with the new information. 2922 2923 2924 Release 93f - 1993-10-15 12:27:46 -0400 2925 2926 Paul Eggert's changes 2927 2928 2929 Release 93e - 1993-09-05 21:21:44 -0400 2930 2931 This has updated data for Israel, England, and Kwajalein. There's 2932 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 2933 Thanks to Paul Eggert and Peter Ilieve for the changes. 2934 2935 2936 Release 93d - 1993-06-17 23:34:17 -0400 2937 2938 new fix and new data on Israel 2939 2940 2941 Release 93c - 1993-06-06 19:31:55 -0400 2942 2943 [not summarized] 2944 2945 2946 Release 93b - 1993-02-02 14:53:58 -0500 2947 2948 updated "leapseconds" file 2949 2950 2951 Release 93 - 1993-01-08 07:01:06 -0500 2952 2953 At kre's suggestion, the package has been split in two - a code piece 2954 (which also includes documentation) that's only of use to folks who 2955 want to recompile things and a data piece useful to anyone who can 2956 run "zic". 2957 2958 The new version has a few changes to the data files, a few 2959 portability changes, and an off-by-one fix (with thanks to 2960 Tom Karzes at deshaw.com for providing a description and a 2961 solution). 2962 2963 2964 Release 92c - 1992-11-21 17:35:36 -0000 2965 [tz92c.tar.Z is missing!] 2966 2967 The fallout from the latest round of DST transitions. 2968 2969 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 2970 there's also a change to "zic.c" that makes it portable to more systems. 2971 2972 2973 Release 92 - 1992-04-25 18:17:03 -0000 2974 [tz92.tar.Z is missing!] 2975 2976 By popular demand (well, at any rate, following a request by kre at munnari) 2977 2978 2979 The 1989 update of the time zone package featured: 2980 2981 * POSIXization (including interpretation of POSIX-style TZ environment 2982 variables, provided by Guy Harris), 2983 * ANSIfication (including versions of "mktime" and "difftime"), 2984 * SVIDulation (an "altzone" variable) 2985 * MACHination (the "gtime" function) 2986 * corrections to some time zone data (including corrections to the rules 2987 for Great Britain and New Zealand) 2988 * reference data from the United States Naval Observatory for folks who 2989 want to do additional time zones 2990 * and the 1989 data for Saudi Arabia. 2991 2992 (Since this code will be treated as "part of the implementation" in some 2993 places and as "part of the application" in others, there's no good way to 2994 name functions, such as timegm, that are not part of the proposed ANSI C 2995 standard; such functions have kept their old, underscore-free names in this 2996 update.) 2997 2998 And the "dysize" function has disappeared; it was present to allow 2999 compilation of the "date" command on old BSD systems, and a version of "date" 3000 is now provided in the package. The "date" command is not created when you 3001 "make all" since it may lack options provided by the version distributed with 3002 your operating system, or may not interact with the system in the same way 3003 the native version does. 3004 3005 Since POSIX frowns on correct leap second handling, the default behavior of 3006 the "zic" command (in the absence of a "-L" option) has been changed to omit 3007 leap second information from its output files. 3008 3009 3010 ----- 3011 Notes 3012 3013 This file contains copies of the part of each release announcement 3014 that talks about the changes in that release. The text has been 3015 adapted and reformatted for the purposes of this file. 3016 3017 Typically a release R consists of a pair of tarball files, 3018 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 3019 code2010a, data2012c) consist of just one or the other tarball, and a 3020 few (e.g., code2012c-data2012d) have tarballs with mixed version 3021 numbers. 3022 3023 Release time stamps are taken from the release's commit (for newer, 3024 git releases), from the newest file in the tarball (for older 3025 releases, where this info is available) or from the email announcing 3026 the release (if all else fails; these are marked with a time zone of 3027 -0000 and an "is missing!" comment). 3028 3029 Earlier versions of the code and data were not announced on the tz 3030 list and are not summarized here. 3031 3032 This file is in the public domain. 3033 3034 Local Variables: 3035 coding: utf-8 3036 End: 3037
Indexes created Sun Sep 28 12:09:53 GMT 2025