NEWS revision 1.7
1 News for the tz database 2 3 Release 2014i - 2014-10-21 22:04:57 -0700 4 5 Changes affecting future time stamps 6 7 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 8 (Thanks to Ken Rylander for the heads-up.) Guess that future 9 years will use a similar pattern. 10 11 A new Zone Pacific/Bougainville, for the part of Papua New Guinea 12 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00. 13 (Thanks to Kiley Walbom for the heads-up.) 14 15 Changes affecting time zone abbreviations 16 17 Since Belarus is not changing its clocks even though Moscow is, 18 the time zone abbreviation in Europe/Minsk is changing from FET 19 to its more-traditional value MSK on 2014-10-26 at 01:00. 20 (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 21 22 The new abbreviation IDT stands for the pre-1976 use of UT+8 in 23 Indochina, to distinguish it better from ICT (UT+7). 24 25 Changes affecting past time stamps 26 27 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976 28 (thanks to Trn Ngc Qun for an indirect pointer to Trn Tin Bnh's 29 authoritative book). Asia/Ho_Chi_Minh has been added to 30 zone1970.tab, to give tzselect users in Vietnam two choices, 31 since north and south Vietnam disagreed after our 1970 cutoff. 32 33 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 34 they differed from existing zones only for older time stamps. As 35 usual, these changes affect pre-1970 time stamps only. Their old 36 contents have been moved to the 'backzone' file. 37 38 Changes affecting code 39 40 The time-related library functions now set errno on failure, and 41 some crashes in the new tzalloc-related library functions have 42 been fixed. (Thanks to Christos Zoulas for reporting most of 43 these problems and for suggesting fixes.) 44 45 If USG_COMPAT is defined and the requested time stamp is standard time, 46 the tz library's localtime and mktime functions now set the extern 47 variable timezone to a value appropriate for that time stamp; and 48 similarly for ALTZONE, daylight saving time, and the altzone variable. 49 This change is a companion to the tzname change in 2014h, and is 50 designed to make timezone and altzone more compatible with tzname. 51 52 The tz library's functions now set errno to EOVERFLOW if they fail 53 because the result cannot be represented. ctime and ctime_r now 54 return NULL and set errno when a time stamp is out of range, rather 55 than having undefined behavior. 56 57 Some bugs associated with the new 2014g functions have been fixed. 58 This includes a bug that largely incapacitated the new functions 59 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 60 It also includes some uses of uninitialized variables after tzalloc. 61 The new code uses the standard type 'ssize_t', which the Makefile 62 now gives porting advice about. 63 64 Changes affecting commentary 65 66 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 67 68 69 Release 2014h - 2014-09-25 18:59:03 -0700 70 71 Changes affecting past time stamps 72 73 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 74 75 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 76 not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 77 78 Some more zones have been turned into links, when they differed 79 from existing zones only for older time stamps. As usual, 80 these changes affect UTC offsets in pre-1970 time stamps only. 81 Their old contents have been moved to the 'backzone' file. 82 The affected zones are: Africa/Blantyre, Africa/Bujumbura, 83 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 84 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 85 86 Changes affecting code 87 88 zdump -V and -v now output gmtoff= values on all platforms, 89 not merely on platforms defining TM_GMTOFF. 90 91 The tz library's localtime and mktime functions now set tzname to a value 92 appropriate for the requested time stamp, and zdump now uses this 93 on platforms not defining TM_ZONE, fixing a 2014g regression. 94 (Thanks to Tim Parenti for reporting the problem.) 95 96 The tz library no longer sets tzname if localtime or mktime fails. 97 98 zdump -c no longer mishandles transitions near year boundaries. 99 (Thanks to Tim Parenti for reporting the problem.) 100 101 An access to uninitalized data has been fixed. 102 (Thanks to Jrg Richter for reporting the problem.) 103 104 When THREAD_SAFE is defined, the code ports to the C11 memory model. 105 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 106 and two threads race to initialize data used by gmtime-like functions. 107 (Thanks to Andy Heninger for reporting the problems.) 108 109 Changes affecting build procedure 110 111 'make check' now checks better for properly-sorted data. 112 113 Changes affecting documentation and commentary 114 115 zdump's gmtoff=N output is now documented, and its isdst=D output 116 is now documented to possibly output D values other than 0 or 1. 117 118 zdump -c's treatment of years is now documented to use the 119 Gregorian calendar and Universal Time without leap seconds, 120 and its behavior at cutoff boundaries is now documented better. 121 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 122 123 Programs are now documented to use the proleptic Gregorian calendar. 124 (Thanks to Alan Barrett for the suggestion.) 125 126 Fractional-second GMT offsets have been documented for civil time 127 in 19th-century Chennai, Jakarta, and New York. 128 129 130 Release 2014g - 2014-08-28 12:31:23 -0700 131 132 Changes affecting future time stamps 133 134 Turks & Caicos is switching from US eastern time to UTC-4 year-round, 135 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00. 136 137 Changes affecting past time stamps 138 139 Time in Russia or the USSR before 1926 or so has been corrected by 140 a few seconds in the following zones: Asia/Irkutsk, 141 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 142 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 143 Asia/Yekaterinburg the correction is a few minutes. (Thanks to 144 Vladimir Karpinsky.) 145 146 The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 147 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, 148 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 149 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 150 (Thanks to Stephen Colebourne for pointing to the decree.) 151 152 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 153 154 A new file 'backzone' contains data which may appeal to 155 connoisseurs of old time stamps, although it is out of scope for 156 the tz database, is often poorly sourced, and contains some data 157 that is known to be incorrect. The new file is not recommended 158 for ordinary use and its entries are not installed by default. 159 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 160 Isle of Man entries.) 161 162 Some more zones have been turned into links, when they differed 163 from existing zones only for older time stamps. As usual, 164 these changes affect UTC offsets in pre-1970 time stamps only. 165 Their old contents have been moved to the 'backzone' file. 166 The affected zones are: Africa/Bangui, Africa/Brazzaville, 167 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 168 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 169 170 Changes affecting code 171 172 Unless NETBSD_INSPIRED is defined to 0, the tz library now 173 supplies functions for creating and using objects that represent 174 time zones. The new functions are tzalloc, tzfree, localtime_rz, 175 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 176 time2posix_z. They are intended for performance: for example, 177 localtime_rz (unlike localtime_r) is trivially thread-safe without 178 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 179 functions, and to Alan Barrett and Jonathan Lennox for helping to 180 debug the change.) 181 182 zdump now builds with the tz library unless USE_LTZ is defined to 0, 183 This lets zdump use tz features even if the system library lacks them. 184 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 185 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 186 187 zdump now uses localtime_rz if available, as it's significantly faster, 188 and it can help zdump better diagnose invalid time zone names. 189 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 190 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 191 not available, zdump now uses localtime_r and tzset if available, 192 as this is a bit cleaner and faster than plain localtime. Compile 193 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 194 lacks these two functions. 195 196 If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 197 Although not needed for tz's own applications, which are single-threaded, 198 this supports POSIX better if the tz library is used in multithreaded apps. 199 200 Some crashes have been fixed when zdump or the tz library is given 201 invalid or outlandish input. 202 203 The tz library no longer mishandles leap seconds on platforms with 204 unsigned time_t in time zones that lack ordinary transitions after 1970. 205 206 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 207 already defined, to make it easier to configure on common platforms. 208 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 209 210 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 211 assumes that reading uninitialized memory yields garbage values 212 but does not cause other problems such as traps. 213 214 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 215 more likely to guess right for ambiguous time stamps near 216 transitions where tm_isdst does not change. 217 218 If HAVE_STRFTIME_L is defined to 1, the tz library now defines 219 strftime_l for compatibility with recent versions of POSIX. 220 Only the C locale is supported, though. HAVE_STRFTIME_L defaults 221 to 1 on recent POSIX versions, and to 0 otherwise. 222 223 tzselect -c now uses a hybrid distance measure that works better 224 in Africa. (Thanks to Alan Barrett for noting the problem.) 225 226 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 227 or when time_tz is defined. 228 229 When HAVE_UTMPX_H is set the 'date' command now builds on systems 230 whose <utmpx.h> file does not define WTMPX_FILE, and when setting 231 the date it updates the wtmpx file if _PATH_WTMPX is defined. 232 This affects GNU/Linux and similar systems. 233 234 For easier maintenance later, some C code has been simplified, 235 some lint has been removed, and the code has been tweaked so that 236 plain 'make' is more likely to work. 237 238 The C type 'bool' is now used for boolean values, instead of 'int'. 239 240 The long-obsolete LOCALE_HOME code has been removed. 241 242 The long-obsolete 'gtime' function has been removed. 243 244 Changes affecting build procedure 245 246 'zdump' no longer links in ialloc.o, as it's not needed. 247 248 'make check_time_t_alternatives' no longer assumes GNU diff. 249 250 Changes affecting distribution tarballs 251 252 The files checktab.awk and zoneinfo2tdf.pl are now distributed in 253 the tzdata tarball instead of the tzcode tarball, since they help 254 maintain the data. The NEWS and Theory files are now also 255 distributed in the tzdata tarball, as they're relevant for data. 256 (Thanks to Alan Barrett for pointing this out.) Also, the 257 leapseconds.awk file is no longer distributed in the tzcode 258 tarball, since it belongs in the tzdata tarball (where 2014f 259 inadvertently also distributed it). 260 261 Changes affecting documentation and commentary 262 263 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 264 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 265 for debugging it.) 266 267 The man pages have been updated to use function prototypes, 268 to document thread-safe variants like localtime_r, and to document 269 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 270 mktime_z. 271 272 The fields in Link lines have been renamed to be more descriptive 273 and more like the parameters of 'ln'. LINK-FROM has become TARGET, 274 and LINK-TO has become LINK-NAME. 275 276 tz-link.htm mentions the IETF's tzdist working group; Windows 277 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 278 279 Some broken URLs have been fixed in the commentary. (Thanks to 280 Lester Caine.) 281 282 Commentary about Philippines DST has been updated, and commentary 283 on pre-1970 time in India has been added. 284 285 286 Release 2014f - 2014-08-05 17:42:36 -0700 287 288 Changes affecting future time stamps 289 290 Russia will subtract an hour from most of its time zones on 2014-10-26 291 at 02:00 local time. (Thanks to Alexander Krivenyshev.) 292 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 293 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 294 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 295 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 296 (Europe/Samara) are not changing their clocks. The changed zones are 297 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 298 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 299 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 300 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 301 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 302 but not its UTC offset. Two zones are added: Asia/Chita (split 303 from Asia/Yakutsk, and also with two hours subtracted) and 304 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 305 subtracted). (Thanks to Tim Parenti for much of the above.) 306 307 Changes affecting time zone abbreviations 308 309 Australian eastern time zone abbreviations are now AEST/AEDT not EST, 310 and similarly for the other Australian zones. That is, for eastern 311 standard and daylight saving time the abbreviations are AEST and AEDT 312 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 313 and AWST/AWDT are now used instead of the former CST, CWST, and WST. 314 This change does not affect UTC offsets, only time zone abbreviations. 315 (Thanks to Rich Tibbett and many others.) 316 317 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7) 318 effective 2014-10-26 at 02:00 local time. 319 320 The time zone abbreviation for Xinjiang Time (observed in rmqi) 321 has been changed from URUT to XJT. (Thanks to Luther Ma.) 322 323 Prefer MSK/MSD for Moscow time in Russia, even in other cities. 324 Similarly, prefer EET/EEST for eastern European time in Russia. 325 326 Change time zone abbreviations in (western) Samoa to use "ST" and 327 "DT" suffixes, as this is more likely to match common practice. 328 Prefix "W" to (western) Samoa time when its standard-time offset 329 disagrees with that of American Samoa. 330 331 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 332 333 Time zone abbreviations have been updated for Japan's two time 334 zones used 1896-1937. JWST now stands for Western Standard 335 Time, and JCST for Central Standard Time (formerly this was CJT). 336 These abbreviations are now used for time in Korea, Taiwan, 337 and Sakhalin while controlled by Japan. 338 339 Changes affecting past time stamps 340 341 China's five zones have been simplified to two, since the post-1970 342 differences in the other three seem to have been imaginary. The 343 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 344 removed; backwards-compatibility links still work, albeit with 345 different behaviors for time stamps before May 1980. Asia/Urumqi's 346 1980 transition to UTC+8 has been removed, so that it is now at 347 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; 348 Treindl sent helpful translations of two papers by Guo Qingsheng.) 349 350 Some zones have been turned into links, when they differed from existing 351 zones only for older UTC offsets where data entries were likely invented. 352 These changes affect UTC offsets in pre-1970 time stamps only. This is 353 similar to the change in release 2013e, except this time for western 354 Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 355 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 356 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 357 Atlantic/St_Helena. This also affects the backwards-compatibility 358 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 359 Tim Parenti, and David Patte for reporting problems in earlier 360 versions of this change.) 361 362 Asia/Shanghai's pre-standard-time UT offset has been changed from 363 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 364 transition to standard time has been changed from 1928 to 1901. 365 366 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 367 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 368 In 1946 it observed DST from 05-15 through 09-30; in 1947 369 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 370 (Thanks to Yu-Cheng Chuang.) 371 372 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 373 374 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 375 10-03 at 00:00. (Thanks to Konstantin Hyppnen.) 376 377 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period 378 from 1911 to 1950. 379 380 Pacific/Chatham has been changed to New Zealand standard time plus 381 45 minutes for the period before 1957, reflecting a 1956 remark in 382 the New Zealand parliament. 383 384 Europe/Budapest has several pre-1946 corrections: in 1918 the transition 385 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 386 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 387 not 04-06 at 02:00; and there was no DST in 1920. 388 389 Africa/Accra is now assumed to have observed DST from 1920 through 1935. 390 391 Time in Russia before 1927 or so has been corrected by a few seconds in 392 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 393 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 394 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 395 point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 396 397 Changes affecting data format 398 399 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 400 The new file's extended format allows multiple country codes per zone. 401 The older file is still installed but is deprecated; its format is 402 not changing and it will still be distributed for a while, but new 403 applications should use the new file. 404 405 The new file format simplifies maintenance of obscure locations. 406 To test this, it adds coverage for the Crozet Islands and the 407 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 408 409 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 410 It is still ASCII now, but commentary about the switch has been added. 411 The new file 'zone1970.tab' already uses UTF-8. 412 413 Changes affecting code 414 415 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 416 is defined. (Thanks to Elliott Hughes for reporting the problem.) 417 418 'zic' no longer mishandles input when ignoring case in locales that 419 are not compatible with English, e.g., unibyte Turkish locales when 420 compiled with HAVE_GETTEXT. 421 422 Error diagnostics of 'zic' and 'yearistype' have been reworded so that 423 they no longer use ASCII '-' as if it were a dash. 424 425 'zic' now rejects output file names that contain '.' or '..' components. 426 (Thanks to Tim Parenti for reporting the problem.) 427 428 'zic -v' now warns about output file names that do not follow 429 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 430 David Olson for starting the ball rolling on this.) 431 432 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 433 434 Changes affecting build procedure 435 436 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 437 (Thanks to John Cochran.) 438 439 Changes affecting documentation and commentary 440 441 The 'Theory' file documents legacy names, the longstanding 442 exceptions to the POSIX-inspired file name rules. 443 444 The 'zic' documentation clarifies the role of time types when 445 interpreting dates. (Thanks to Arthur David Olson.) 446 447 Documentation and commentary now prefer UTF-8 to US-ASCII, 448 allowing the use of proper accents in foreign words and names. 449 Code and data have not changed because of this. (Thanks to 450 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 451 this.) 452 453 Non-HTML documentation and commentary now use plain-text URLs instead of 454 HTML insertions, and are more consistent about bracketing URLs when they 455 are not already surrounded by white space. (Thanks to suggestions by 456 Steffen Nurpmeso.) 457 458 There is new commentary about Xujiahui Observatory, the five time-zone 459 project in China from 1918 to 1949, timekeeping in Japanese-occupied 460 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 461 warlord Jin Shuren in the data. 462 463 Commentary about the coverage of each Russian zone has been standardized. 464 (Thanks to Tim Parenti). 465 466 There is new commentary about contemporary timekeeping in Ethiopia. 467 468 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 469 470 There is new commentary about time in Poland in 1919. 471 472 Proper credit has been given to DST inventor George Vernon Hudson. 473 474 Commentary about time in Metlakatla, AK and Resolute, NU has been 475 improved, with a new source for the former. 476 477 In zone.tab, Pacific/Easter no longer mentions Salas y Gmez, as it 478 is uninhabited. 479 480 Commentary about permanent Antarctic bases has been updated. 481 482 Several typos have been corrected. (Thanks to Tim Parenti for 483 contributing some of these fixes.) 484 485 tz-link.htm now mentions the JavaScript libraries Moment Timezone, 486 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 487 from Matt Johnson.) Also, it mentions the Go 'latlong' package. 488 (Thanks to a heads-up from Dirkjan Ochtman.) 489 490 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 491 have been removed. These obsolescent US Naval Observatory entries were no 492 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 493 494 495 Release 2014e - 2014-06-12 21:53:52 -0700 496 497 Changes affecting near-future time stamps 498 499 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 500 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 501 switch to standard time at 24:00 the last Thursday before Ramadan, and 502 back to DST at 00:00 the first Friday after Ramadan. 503 504 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 505 to Milamber Space Network.) Guess that from 2015 on Morocco will 506 temporarily switch to standard time at 03:00 the last Saturday before 507 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 508 509 Changes affecting past time stamps 510 511 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 512 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 513 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 514 in 1991. (Thanks to Hank W. for reporting the problems.) 515 516 Changes affecting commentary 517 518 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 519 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 520 removes stale pointers to World Time Explorer and WORLDTIME. 521 522 523 Release 2014d - 2014-05-27 21:34:40 -0700 524 525 Changes affecting code 526 527 zic no longer generates files containing time stamps before the Big Bang. 528 This works around GNOME bug 730332 529 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. 530 (Thanks to Leonardo Chiquitto for reporting the bug, and to 531 Arthur David Olson and James Cloos for suggesting improvements to the fix.) 532 533 Changes affecting documentation 534 535 tz-link.htm now mentions GNOME. 536 537 538 Release 2014c - 2014-05-13 07:44:13 -0700 539 540 Changes affecting near-future time stamps 541 542 Egypt observes DST starting 2014-05-15 at 24:00. 543 (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 544 Details have not been announced, except that DST will not be observed 545 during Ramadan. Guess that DST will stop during the same Ramadan dates as 546 Morocco, and that Egypt's future spring and fall transitions will be the 547 same as 2010 when it last observed DST, namely April's last Friday at 548 00:00 to September's last Thursday at 23:00 standard time. Also, guess 549 that Ramadan transitions will be at 00:00 standard time. 550 551 Changes affecting code 552 553 zic now generates transitions for minimum time values, eliminating guesswork 554 when handling low-valued time stamps. (Thanks to Arthur David Olson.) 555 556 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 557 558 Changes affecting commentary and documentation 559 560 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 561 562 563 Release 2014b - 2014-03-24 21:28:50 -0700 564 565 Changes affecting near-future time stamps 566 567 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 568 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 569 570 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 571 Bengt-Inge Larsson.) This is currently an approximation; a better version 572 will require the zic and localtime fixes mentioned below, and the plan is 573 to wait for a while until at least the zic fixes propagate. 574 575 Changes affecting code 576 577 'zic' and 'localtime' no longer reject locations needing four transitions 578 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 579 Also, 'zic' avoids some unlikely failures due to integer overflow. 580 581 Changes affecting build procedure 582 583 'make check' now detects Rule lines defined but never used. 584 The NZAQ rules, an instance of this problem, have been removed. 585 586 Changes affecting commentary and documentation 587 588 Fix Tuesday/Thursday typo in description of time in Israel. 589 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 590 591 Microsoft Windows 8.1 doesn't support tz database names. (Thanks 592 to Donald MacQueen.) Instead, the Microsoft Windows Store app 593 library supports them. 594 595 Add comments about Johnston Island time in the 1960s. 596 (Thanks to Lyle McElhaney.) 597 598 Morocco's 2014 DST start will be as predicted. 599 (Thanks to Sebastien Willemijns.) 600 601 602 Release 2014a - 2014-03-07 23:30:29 -0800 603 604 Changes affecting near-future time stamps 605 606 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 607 the heads-up, and to Tim Parenti for simplifying the update.) 608 609 Changes affecting past time stamps 610 611 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. 612 (Thanks to Steffen Thorsen.) 613 614 Ukraine switched from Moscow to Eastern European time on 1990-07-01 615 (not 1992-01-01), and observed DST during the entire next winter. 616 (Thanks to Vladimir in Moscow via Alois Treindl.) 617 618 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 619 (Thanks to Avigdor Finkelstein.) 620 621 Changes affecting code 622 623 A uninitialized-storage bug in 'localtime' has been fixed. 624 (Thanks to Logan Chien.) 625 626 Changes affecting the build procedure 627 628 The settings for 'make check_web' now default to Ubuntu 13.10. 629 630 Changes affecting commentary and documentation 631 632 The boundary of the US Pacific time zone is given more accurately. 633 (Thanks to Alan Mintz.) 634 635 Chile's 2014 DST will be as predicted. (Thanks to Jos Miguel Garrido.) 636 637 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Ral Perasso.) 638 639 Better descriptions of countries with same time zone history as 640 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 641 642 Several changes affect tz-link.htm, the main web page. 643 644 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 645 David Braverman). 646 647 Mention xCal (Internet RFC 6321) and jCal. 648 649 Microsoft has some support for tz database names. 650 651 CLDR data formats include both XML and JSON. 652 653 Mention Maggiolo's map of solar vs standard time. 654 (Thanks to Arthur David Olson.) 655 656 Mention TZ4Net. (Thanks to Matt Johnson.) 657 658 Mention the timezone-olson Haskell package. 659 660 Mention zeitverschiebung.net. (Thanks to Martin Jger.) 661 662 Remove moribund links to daylight-savings-time.info and to 663 Simple Timer + Clocks. 664 665 Update two links. (Thanks to Oscar van Vlijmen.) 666 667 Fix some formatting glitches, e.g., remove random newlines from 668 abbr elements' title attributes. 669 670 671 Release 2013i - 2013-12-17 07:25:23 -0800 672 673 Changes affecting near-future time stamps: 674 675 Jordan switches back to standard time at 00:00 on December 20, 2013. 676 The 2006-2011 transition schedule is planned to resume in 2014. 677 (Thanks to Steffen Thorsen.) 678 679 Changes affecting past time stamps: 680 681 In 2004, Cuba began DST on March 28, not April 4. 682 (Thanks to Steffen Thorsen.) 683 684 Changes affecting code 685 686 The compile-time flag NOSOLAR has been removed, as nowadays the 687 benefit of slightly shrinking runtime table size is outweighed by the 688 cost of disallowing potential future updates that exceed old limits. 689 690 Changes affecting documentation and commentary 691 692 The files solar87, solar88, and solar89 are no longer distributed. 693 They were a negative experiment - that is, a demonstration that 694 tz data can represent solar time only with some difficulty and error. 695 Their presence in the distribution caused confusion, as Riyadh 696 civil time was generally not solar time in those years. 697 698 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 699 700 701 Release 2013h - 2013-10-25 15:32:32 -0700 702 703 Changes affecting current and future time stamps: 704 705 Libya has switched its time zone back to UTC+2 without DST, 706 instead of UTC+1 with DST. (Thanks to Even Scharning.) 707 708 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 709 (Thanks to Gwillim Law.) 710 711 Changes affecting future time stamps: 712 713 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5 714 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 715 (Thanks to Steffen Thorsen.) 716 717 Add entries for DST transitions in Morocco in the year 2038. 718 This avoids some year-2038 glitches introduced in 2013g. 719 (Thanks to Yoshito Umaoka for reporting the problem.) 720 721 Changes affecting API 722 723 The 'tzselect' command no longer requires the 'select' command, 724 and should now work with /bin/sh on more platforms. It also works 725 around a bug in BusyBox awk before version 1.21.0. (Thanks to 726 Patrick 'P. J.' McDermott and Alan Barrett.) 727 728 Changes affecting code 729 730 Fix localtime overflow bugs with 32-bit unsigned time_t. 731 732 zdump no longer assumes sscanf returns maximal values on overflow. 733 734 Changes affecting the build procedure 735 736 The builder can specify which programs to use, if any, instead of 737 'ar' and 'ranlib', and libtz.a is now built locally before being 738 installed. (Thanks to Michael Forney.) 739 740 A dependency typo in the 'zdump' rule has been fixed. 741 (Thanks to Andrew Paprocki.) 742 743 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 744 work as specified by POSIX.2-1992 or later; this is portable nowadays. 745 746 'make clean' no longer removes 'leapseconds', since it's 747 host-independent and is part of the distribution. 748 749 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 750 751 Changes affecting documentation and commentary 752 753 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 754 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 755 756 Update URLs in tz-link page. Add URLs for Microsoft Windows, since 757 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 758 longer maintained) and for old advisories. SOFA now does C. 759 760 Release 2013g - 2013-09-30 21:08:26 -0700 761 762 Changes affecting current and near-future time stamps 763 764 Morocco now observes DST from the last Sunday in March to the last 765 Sunday in October, not April to September respectively. (Thanks 766 to Steffen Thorsen.) 767 768 Changes affecting 'zic' 769 770 'zic' now runs on platforms that lack both hard links and symlinks. 771 (Thanks to Theo Veenker for reporting the problem, for MinGW.) 772 Also, fix some bugs on platforms that lack hard links but have symlinks. 773 774 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 775 to predict the far future, fixing a bug introduced in 2013e. 776 777 Changes affecting the build procedure 778 779 The 'leapseconds' file is again put into the tzdata tarball. 780 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 781 Matt Burgess and Ian Abbott.) The timestamps of these and other 782 dependent files in tarballs are adjusted more consistently. 783 784 Changes affecting documentation and commentary 785 786 The README file is now part of the data tarball as well as the code. 787 It now states that files are public domain unless otherwise specified. 788 (Thanks to Andrew Main (Zefram) for asking for clarifications.) 789 Its details about the 1989 release moved to a place of honor near 790 the end of NEWS. 791 792 793 Release 2013f - 2013-09-24 23:37:36 -0700 794 795 Changes affecting near-future time stamps 796 797 Tocantins will very likely not observe DST starting this spring. 798 (Thanks to Steffen Thorsen.) 799 800 Jordan will likely stay at UTC+3 indefinitely, and will not fall 801 back this fall. 802 803 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 804 805 Changes affecting API 806 807 The types of the global variables 'timezone' and 'altzone' (if present) 808 have been changed back to 'long'. This is required for 'timezone' 809 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 810 These variables were originally 'long' in the tz code, but were 811 mistakenly changed to 'time_t' in 1987; nobody reported the 812 incompatibility until now. The difference matters on x32, where 813 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 814 815 Changes affecting the build procedure 816 817 Avoid long strings in leapseconds.awk to work around a mawk bug. 818 (Thanks to Cyril Baurand.) 819 820 Changes affecting documentation and commentary 821 822 New file 'NEWS' that contains release notes like this one. 823 824 Paraguay's law does not specify DST transition time; 00:00 is customary. 825 (Thanks to Waldemar Villamayor-Venialbo.) 826 827 Minor capitalization fixes. 828 829 Changes affecting version-control only 830 831 The experimental GitHub repository now contains annotated and 832 signed tags for recent releases, e.g., '2013e' for Release 2013e. 833 Releases are tagged starting with 2012e; earlier releases were 834 done differently, and tags would either not have a simple name or 835 not exactly match what was released. 836 837 'make set-timestamps' is now simpler and a bit more portable. 838 839 840 Release 2013e - 2013-09-19 23:50:04 -0700 841 842 Changes affecting near-future time stamps 843 844 This year Fiji will start DST on October 27, not October 20. 845 (Thanks to David Wheeler for the heads-up.) For now, guess that 846 Fiji will continue to spring forward the Sunday before the fourth 847 Monday in October. 848 849 Changes affecting current and future time zone abbreviations 850 851 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 852 time zone abbreviations since 1932. (Thanks to George Ziegler, 853 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 854 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 855 Asia/Makassar, and Asia/Pontianak. 856 857 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but 858 daylight saving time) for San Luis, Argentina since 2009. 859 860 Changes affecting Godthb time stamps after 2037 if version mismatch 861 862 Allow POSIX-like TZ strings where the transition time's hour can 863 range from -167 through 167, instead of the POSIX-required 0 864 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 865 new Fiji rules. This is a more-compact way to represent 866 far-future time stamps for America/Godthab, America/Santiago, 867 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 868 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 869 this change. (Derived from a suggestion by Arthur David Olson.) 870 871 Allow POSIX-like TZ strings where daylight saving time is in 872 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 873 Argentina Summer Time all year. This supports a more-compact way 874 to represent the 2013d data for America/Argentina/San_Luis. 875 Because of the change for San Luis noted above this change does not 876 affect the current data. (Thanks to Andrew Main (Zefram) for 877 suggestions that improved this change.) 878 879 Where these two TZ changes take effect, there is a minor extension 880 to the tz file format in that it allows new values for the 881 embedded TZ-format string, and the tz file format version number 882 has therefore been increased from 2 to 3 as a precaution. 883 Version-2-based client code should continue to work as before for 884 all time stamps before 2038. Existing version-2-based client code 885 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 886 files, and typically works in practice even for time stamps after 887 2037; the only known exception is America/Godthab. 888 889 Changes affecting time stamps before 1970 890 891 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 892 some errors before 1947. 893 894 Some zones have been turned into links, when they differ from existing 895 zones only in older data entries that were likely invented or that 896 differ only in LMT or transitions from LMT. These changes affect 897 only time stamps before 1943. The affected zones are: 898 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 899 America/Grenada, America/Guadeloupe, America/Marigot, 900 America/Montserrat, America/St_Barthelemy, America/St_Kitts, 901 America/St_Lucia, America/St_Thomas, America/St_Vincent, 902 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 903 confirming that the old Europe/Vaduz zone was wrong and the new 904 link is better for WWII-era times.) 905 906 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 907 America/Cayman, America/Jamaica and America/Grand_Turk time stamps 908 from 1890 to 1912. 909 910 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 911 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks 912 to Alois Treindl). 913 914 Change the date of the circa-1850 Zurich transition from 1849-09-12 915 to 1853-07-16, overriding Shanks with data from Messerli about 916 postal and telegraph time in Switzerland. 917 918 Changes affecting time zone abbreviations before 1970 919 920 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 921 as Jakarta was called Batavia back then. 922 923 Changes affecting API 924 925 The 'zic' command now outputs a dummy transition when far-future 926 data can't be summarized using a TZ string, and uses a 402-year 927 window rather than a 400-year window. For the current data, this 928 affects only the Asia/Tehran file. It does not affect any of the 929 time stamps that this file represents, so zdump outputs the same 930 information as before. (Thanks to Andrew Main (Zefram).) 931 932 The 'date' command has a new '-r' option, which lets you specify 933 the integer time to display, a la FreeBSD. 934 935 The 'tzselect' command has two new options '-c' and '-n', which lets you 936 select a zone based on latitude and longitude. 937 938 The 'zic' command's '-v' option now warns about constructs that 939 require the new version-3 binary file format. (Thanks to Arthur 940 David Olson for the suggestion.) 941 942 Support for floating-point time_t has been removed. 943 It was always dicey, and POSIX no longer requires it. 944 (Thanks to Eric Blake for suggesting to the POSIX committee to 945 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 946 Heninger, Arthur David Olson, and Alois Treindl, for reporting 947 bugs and elucidating some of the corners of the old floating-point 948 implementation.) 949 950 The signatures of 'offtime', 'timeoff', and 'gtime' have been 951 changed back to the old practice of using 'long' to represent UT 952 offsets. This had been inadvertently and mistakenly changed to 953 'int_fast32_t'. (Thanks to Christos Zoulas.) 954 955 The code avoids undefined behavior on integer overflow in some 956 more places, including gmtime, localtime, mktime and zdump. 957 958 Changes affecting the zdump utility 959 960 zdump now outputs "UT" when referring to Universal Time, not "UTC". 961 "UTC" does not make sense for time stamps that predate the introduction 962 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen 963 for clarifying UT vs UTC.) 964 965 Data changes affecting behavior of tzselect and similar programs 966 967 Country code BQ is now called the more-common name "Caribbean Netherlands" 968 rather than the more-official "Bonaire, St Eustatius & Saba". 969 970 Remove from zone.tab the names America/Montreal, America/Shiprock, 971 and Antarctica/South_Pole, as they are equivalent to existing 972 same-country-code zones for post-1970 time stamps. The data entries for 973 these names are unchanged, so the names continue to work as before. 974 975 Changes affecting code internals 976 977 zic -c now runs way faster on 64-bit hosts when given large numbers. 978 979 zic now uses vfprintf to avoid allocating and freeing some memory. 980 981 tzselect now computes the list of continents from the data, 982 rather than have it hard-coded. 983 984 Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 985 986 Changes affecting the build procedure 987 988 The 'leapseconds' file is now generated automatically from a 989 new file 'leap-seconds.list', which is a copy of 990 <ftp://time.nist.gov/pub/leap-seconds.list>. 991 A new source file 'leapseconds.awk' implements this. 992 The goal is simplification of the future maintenance of 'leapseconds'. 993 994 When building the 'posix' or 'right' subdirectories, if the 995 subdirectory would be a copy of the default subdirectory, it is 996 now made a symbolic link if that is supported. This saves about 997 2 MB of file system space. 998 999 The links America/Shiprock and Antarctica/South_Pole have been 1000 moved to the 'backward' file. This affects only nondefault builds 1001 that omit 'backward'. 1002 1003 Changes affecting version-control only 1004 1005 .gitignore now ignores 'date'. 1006 1007 Changes affecting documentation and commentary 1008 1009 Changes to the 'tzfile' man page 1010 1011 It now mentions that the binary file format may be extended in 1012 future versions by appending data. 1013 1014 It now refers to the 'zdump' and 'zic' man pages. 1015 1016 Changes to the 'zic' man page 1017 1018 It lists conditions that elicit a warning with '-v'. 1019 1020 It says that the behavior is unspecified when duplicate names 1021 are given, or if the source of one link is the target of another. 1022 1023 Its examples are updated to match the latest data. 1024 1025 The definition of white space has been clarified slightly. 1026 (Thanks to Michael Deckers.) 1027 1028 Changes to the 'Theory' file 1029 1030 There is a new section about the accuracy of the tz database, 1031 describing the many ways that errors can creep in, and 1032 explaining why so many of the pre-1970 time stamps are wrong or 1033 misleading (thanks to Steve Allen, Lester Caine, and Garrett 1034 Wollman for discussions that contributed to this). 1035 1036 The 'Theory' file describes LMT better (this follows a 1037 suggestion by Guy Harris). 1038 1039 It refers to the 2013 edition of POSIX rather than the 2004 edition. 1040 1041 It's mentioned that excluding 'backward' should not affect the 1042 other data, and it suggests at least one zone.tab name per 1043 inhabited country (thanks to Stephen Colebourne). 1044 1045 Some longstanding restrictions on names are documented, e.g., 1046 'America/New_York' precludes 'America/New_York/Bronx'. 1047 1048 It gives more reasons for the 1970 cutoff. 1049 1050 It now mentions which time_t variants are supported, such as 1051 signed integer time_t. (Thanks to Paul Goyette for reporting 1052 typos in an experimental version of this change.) 1053 1054 (Thanks to Philip Newton for correcting typos in these changes.) 1055 1056 Documentation and commentary is more careful to distinguish UT in 1057 general from UTC in particular. (Thanks to Steve Allen.) 1058 1059 Add a better source for the Zurich 1894 transition. 1060 (Thanks to Pierre-Yves Berger.) 1061 1062 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 1063 1064 1065 Release 2013d - 2013-07-05 07:38:01 -0700 1066 1067 Changes affecting future time stamps: 1068 1069 Morocco's midsummer transitions this year are July 7 and August 10, 1070 not July 9 and August 8. (Thanks to Andrew Paprocki.) 1071 1072 Israel now falls back on the last Sunday of October. 1073 (Thanks to Ephraim Silverberg.) 1074 1075 Changes affecting past time stamps: 1076 1077 Specify Jerusalem's location more precisely; this changes the pre-1880 1078 times by 2 s. 1079 1080 Changing affecting metadata only: 1081 1082 Fix typos in the entries for country codes BQ and SX. 1083 1084 Changes affecting code: 1085 1086 Rework the code to fix a bug with handling Australia/Macquarie on 1087 32-bit hosts (thanks to Arthur David Olson). 1088 1089 Port to platforms like NetBSD, where time_t can be wider than long. 1090 1091 Add support for testing time_t types other than the system's. 1092 Run 'make check_time_t_alternatives' to try this out. 1093 Currently, the tests fail for unsigned time_t; 1094 this should get fixed at some point. 1095 1096 Changes affecting documentation and commentary: 1097 1098 Deemphasize the significance of national borders. 1099 1100 Update the zdump man page. 1101 1102 Remove obsolete NOID comment (thanks to Denis Excoffier). 1103 1104 Update several URLs and comments in the web pages. 1105 1106 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 1107 1108 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 1109 1110 1111 Release 2013c - 2013-04-19 16:17:40 -0700 1112 1113 Changes affecting current and future time stamps: 1114 1115 Palestine observed DST starting March 29, 2013. (Thanks to 1116 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 1117 with the predicted rules being the last Thursday in March at 24:00 1118 to the first Friday on or after September 21 at 01:00. 1119 1120 Assume that the recent change to Paraguay's DST rules is permanent, 1121 by moving the end of DST to the 4th Sunday in March every year. 1122 (Thanks to Carlos Ral Perasso.) 1123 1124 Changes affecting past time stamps: 1125 1126 Fix some historical data for Palestine to agree with that of 1127 timeanddate.com, as follows: 1128 1129 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 1130 00:00 Apr 1. 1131 1132 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 1133 02:00. 1134 1135 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 1136 1137 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 1138 1139 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 1140 1141 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 1142 1143 Fix times of habitation for Macquarie to agree with the Tasmania 1144 Parks & Wildlife Service history, which indicates that permanent 1145 habitation was 1899-1919 and 1948 on. 1146 1147 Changing affecting metadata only: 1148 1149 Macquarie Island is politically part of Australia, not Antarctica. 1150 (Thanks to Tobias Conradi.) 1151 1152 Sort Macquarie more-consistently with other parts of Australia. 1153 (Thanks to Tim Parenti.) 1154 1155 1156 Release 2013b - 2013-03-10 22:33:40 -0700 1157 1158 Changes affecting current and future time stamps: 1159 1160 Haiti uses US daylight-saving rules this year, and presumably future years. 1161 This changes time stamps starting today. (Thanks to Steffen Thorsen.) 1162 1163 Paraguay will end DST on March 24 this year. 1164 (Thanks to Steffen Thorsen.) For now, assume it's just this year. 1165 1166 Morocco does not observe DST during Ramadan; 1167 try to predict Ramadan in Morocco as best we can. 1168 (Thanks to Erik Homoet for the heads-up.) 1169 1170 Changes affecting commentary: 1171 1172 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 1173 Update URL for Solaris. Mention Internet RFC 6557. 1174 Update Internet RFCs 2445->5545, 2822->5322. 1175 Switch from FTP to HTTP for Internet RFCs. 1176 1177 1178 Release 2013a - 2013-02-27 09:20:35 -0800 1179 1180 Change affecting binary data format: 1181 1182 The zone offset at the end of version-2-format zone files is now 1183 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 1184 1185 Changes affecting current and future time stamps: 1186 1187 Chile's 2013 rules, and we guess rules for 2014 and later, will be 1188 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 1189 (Thanks to Steffen Thorsen and Robert Elz.) 1190 1191 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 1192 (Thanks to Tobias Conradi and Arthur David Olson.) 1193 1194 Many changes affect historical time stamps before 1940. 1195 These were deduced from: Milne J. Civil time. Geogr J. 1899 1196 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. 1197 1198 Changes affecting the code: 1199 1200 Fix zic bug that mishandled Egypt's 2010 changes (this also affected 1201 the data). (Thanks to Arthur David Olson.) 1202 1203 Fix localtime bug when time_t is unsigned and data files were generated 1204 by a signed time_t system. (Thanks to Doug Bailey for reporting and 1205 to Arthur David Olson for fixing.) 1206 1207 Allow the email address for bug reports to be set by the packager. 1208 The default is tz (a] iana.org, as before. (Thanks to Joseph S. Myers.) 1209 1210 Update HTML checking to be compatible with Ubuntu 12.10. 1211 1212 Check that files are a safe subset of ASCII. At some point we may 1213 relax this requirement to a safe subset of UTF-8. Without the 1214 check, some non-UTF-8 encodings were leaking into the distribution. 1215 1216 Commentary changes: 1217 1218 Restore a comment about copyright notices that was inadvertently deleted. 1219 (Thanks to Arthur David Olson.) 1220 1221 Improve the commentary about which districts observe what times 1222 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). 1223 1224 Add web page links to tz.js. 1225 1226 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 1227 1228 1229 Release 2012j - 2012-11-12 18:34:49 -0800 1230 1231 Libya moved to CET this weekend, but with DST planned next year. 1232 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 1233 1234 Signatures now have the extension .asc, not .sign, as that's more 1235 standard. (Thanks to Phil Pennock.) 1236 1237 The output of 'zdump --version', and of 'zic --version', now 1238 uses a format that is more typical for --version. 1239 (Thanks to Joseph S. Myers.) 1240 1241 The output of 'tzselect --help', 'zdump --help', and 'zic --help' 1242 now uses tz (a] iana.org rather than the old elsie address. 1243 1244 zic -v now complains about abbreviations that are less than 3 1245 or more than 6 characters, as per Posix. Formerly, it checked 1246 for abbreviations that were more than 3. 1247 1248 'make public' no longer puts its temporary directory under /tmp, 1249 and uses the just-built zic rather than the system zic. 1250 1251 Various fixes to documentation and commentary. 1252 1253 1254 Release 2012i - 2012-11-03 12:57:09 -0700 1255 1256 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 1257 1258 Linker flags can now be specified via LDFLAGS. 1259 AWK now defaults to 'awk', not 'nawk'. 1260 The shell in tzselect now defaults to /bin/bash, but this can 1261 be overridden by specifying KSHELL. 1262 The main web page now mentions the unofficial GitHub repository. 1263 (Thanks to Mike Frysinger.) 1264 1265 Tarball signatures can now be built by running 'make signatures'. 1266 There are also new makefile rules 'tarballs', 'check_public', and 1267 separate makefile rules for each tarball and signature file. 1268 A few makefile rules are now more portable to strict POSIX. 1269 1270 The main web page now lists the canonical IANA URL. 1271 1272 1273 Release 2012h - 2012-10-26 22:49:10 -0700 1274 1275 Bahia no longer has DST. (Thanks to Kelley Cook.) 1276 1277 Tocantins has DST. (Thanks to Rodrigo Severo.) 1278 1279 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 1280 1281 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 1282 1283 Web page updates. 1284 1285 More C modernization, except that at Arthur David Olson's suggestion 1286 the instances of 'register' were kept. 1287 1288 1289 Release 2012g - 2012-10-17 20:59:45 -0700 1290 1291 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 1292 1293 Palestine fall 2012. (Thanks to Steffen Thorsen.) 1294 1295 Assume C89. 1296 1297 To attack the version-number problem, this release ships the file 1298 'Makefile' (which contains the release number) in both the tzcode and 1299 the tzdata tarballs. The two Makefiles are identical, and should be 1300 identical in any matching pair of tarballs, so it shouldn't matter 1301 which order you extract the tarballs. Perhaps we can come up with a 1302 better version-number scheme at some point; this scheme does have the 1303 virtue of not adding more files. 1304 1305 1306 Release 2012f - 2012-09-12 23:17:03 -0700 1307 1308 * australasia (Pacific/Fiji): Fiji DST is October 21 through January 1309 20 this year. (Thanks to Steffen Thorsen.) 1310 1311 1312 Release 2012e - 2012-08-02 20:44:55 -0700 1313 1314 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14. 1315 (Thanks to Steffen Thorsen.) 1316 1317 * Use a single version number for both code and data. 1318 1319 * .gitignore: New file. 1320 1321 * Remove trailing white space. 1322 1323 1324 Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 1325 1326 Changes for Morocco's time stamps, which take effect in a couple of 1327 hours, along with infrastructure changes to accommodate how the tz 1328 code and data are released on IANA. 1329 1330 1331 Release data2012c - 2012-03-27 12:17:25 -0400 1332 1333 africa 1334 Summer time changes for Morocco (to start late April 2012) 1335 1336 asia 1337 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 1338 1339 northamerica 1340 Haiti following US/Canada rules for 2012 (and we're assuming, 1341 for now anyway, for the future). 1342 1343 1344 Release 2012b - 2012-03-02 12:29:15 +0700 1345 1346 There is just one change to tzcode2012b (compared with 2012a): 1347 the Makefile that was accidentally included with 2012a has been 1348 replaced with the version that should have been there, which is 1349 identical with the previous version (from tzcode2011i). 1350 1351 There are just two changes in tzdata2012b compared with 2012a. 1352 1353 Most significantly, summer time in Cuba has been delayed 3 weeks 1354 (now starts April 1 rather than March 11). Since Mar 11 (the old start 1355 date, as listed in 2012a) is just a little over a week away, this 1356 change is urgent. 1357 1358 Less importantly, an excess tab in one of the changes in zone.tab 1359 in 2012a has been removed. 1360 1361 1362 Release 2012a - 2012-03-01 18:28:10 +0700 1363 1364 The changes in tzcode2012a (compared to the previous version, 2011i) 1365 are entirely to the README and tz-art.htm and tz-link.htm files, if 1366 none of those concern you, you can ignore the code update. The changes 1367 reflect the changed addresses for the mailing list and the code and 1368 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 1369 has been added to tz-link.htm). 1370 1371 In tzdata2012a (compared to the previous release, which was 2011n) 1372 the major changes are: 1373 Chile 2011/2012 and 2012/2013 summer time date adjustments. 1374 Falkland Islands onto permanent summer time (we're assuming for the 1375 foreseeable future, though 2012 is all we're fairly certain of.) 1376 Armenia has abolished Summer Time. 1377 Tokelau jumped the International Date Line back last December 1378 (just the same as their near neighbour, Samoa). 1379 America/Creston is a new zone for a small area of British Columbia 1380 There will be a leapsecond 2012-06-30 23:59:60 UTC. 1381 1382 Other minor changes are: 1383 Corrections to 1918 Canadian summer time end dates. 1384 Updated URL for UK time zone history (in comments) 1385 A few typos in Le Corre's list of free French place names (comments) 1386 1387 1388 Release data2011n - 2011-10-30 14:57:54 +0700 1389 1390 There are three changes of note - most urgently, Cuba (America/Havana) 1391 has extended summer time by two weeks, now to end on Nov 13, rather than 1392 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 1393 (Europe/Tiraspol) decided not to split from the rest of Moldova after 1394 all, and consequently that zone has been removed (again) and reinstated 1395 in the "backward" file as a link to Europe/Chisinau. And third, the 1396 end date for Fiji's summer time this summer was moved forward from the 1397 earlier planned Feb 26, to Jan 22. 1398 1399 Apart from that, Moldova (MD) returns to a single entry in zone.tab 1400 (and the incorrect syntax that was in the 2011m version of that file 1401 is so fixed - it would have been fixed in a different way had this 1402 change not happened - that's the "missing" sccs version id). 1403 1404 1405 Release data2011m - 2011-10-24 21:42:16 +0700 1406 1407 In particular, the typos in comments in the data (2011-11-17 should have 1408 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 1409 Tim Parenti noted) have been fixed, and the change for Ukraine has been 1410 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to 1411 Tim Parenti, and also Denys Gavrysh) 1412 1413 In addition, I added Europe/Tiraspol to zone.tab. 1414 1415 This time, all the files have new version numbers... (including the files 1416 otherwise unchanged in 2011m that were changed in 2011l but didn't get new 1417 version numbers there...) 1418 1419 1420 Release data2011l - 2011-10-10 11:15:43 +0700 1421 1422 There are just 2 changes that cause different generated tzdata files from 1423 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 1424 is included, but commented out. Compared with the diff I sent out last week, 1425 this version also includes attributions for the sources for the changes 1426 (in much the same format as ado used, but the html tags have not been 1427 checked, verified, or used in any way at all, so if there are errors there, 1428 please let me know.) 1429 1430 1431 Release data2011k - 2011-09-20 17:54:03 -0400 1432 1433 [not summarized] 1434 1435 1436 Release data2011j - 2011-09-12 09:22:49 -0400 1437 1438 (contemporary changes for Samoa; past changes for Kenya, Uganda, and 1439 Tanzania); there are also two spelling corrections to comments in 1440 the australasia file (with thanks to Christos Zoulas). 1441 1442 1443 Release 2011i - 2011-08-29 05:56:32 -0400 1444 1445 [not summarized] 1446 1447 1448 Release data2011h - 2011-06-15 18:41:48 -0400 1449 1450 Russia and Curaao changes 1451 1452 1453 Release 2011g - 2011-04-25 09:07:22 -0400 1454 1455 update the rules for Egypt to reflect its abandonment of DST this year 1456 1457 1458 Release 2011f - 2011-04-06 17:14:53 -0400 1459 1460 [not summarized] 1461 1462 1463 Release 2011e - 2011-03-31 16:04:38 -0400 1464 1465 Morocco, Chile, and tz-link changes 1466 1467 1468 Release 2011d - 2011-03-14 09:18:01 -0400 1469 1470 changes that impact present-day time stamps in Cuba, Samoa, and Turkey 1471 1472 1473 Release 2011c - 2011-03-07 09:30:09 -0500 1474 1475 These do affect current time stamps in Chile and Annette Island, Canada. 1476 1477 1478 Release 2011b - 2011-02-07 08:44:50 -0500 1479 1480 [not summarized] 1481 1482 1483 Release 2011a - 2011-01-24 10:30:16 -0500 1484 1485 [not summarized] 1486 1487 1488 Release data2010o - 2010-11-01 09:18:23 -0400 1489 1490 change to the end of DST in Fiji in 2011 1491 1492 1493 Release 2010n - 2010-10-25 08:19:17 -0400 1494 1495 [not summarized] 1496 1497 1498 Release 2010m - 2010-09-27 09:24:48 -0400 1499 1500 Hong Kong, Vostok, and zic.c changes 1501 1502 1503 Release 2010l - 2010-08-16 06:57:25 -0400 1504 1505 [not summarized] 1506 1507 1508 Release 2010k - 2010-07-26 10:42:27 -0400 1509 1510 [not summarized] 1511 1512 1513 Release 2010j - 2010-05-10 09:07:48 -0400 1514 1515 changes for Baha de Banderas and for version naming 1516 1517 1518 Release data2010i - 2010-04-16 18:50:45 -0400 1519 1520 the end of DST in Morocco on 2010-08-08 1521 1522 1523 Release data2010h - 2010-04-05 09:58:56 -0400 1524 1525 [not summarized] 1526 1527 1528 Release data2010g - 2010-03-24 11:14:53 -0400 1529 1530 [not summarized] 1531 1532 1533 Release 2010f - 2010-03-22 09:45:46 -0400 1534 1535 [not summarized] 1536 1537 1538 Release data2010e - 2010-03-08 14:24:27 -0500 1539 1540 corrects the Dhaka bug found by Danvin Ruangchan 1541 1542 1543 Release data2010d - 2010-03-06 07:26:01 -0500 1544 1545 [not summarized] 1546 1547 1548 Release 2010c - 2010-03-01 09:20:58 -0500 1549 1550 changes including KRE's suggestion for earlier initialization of 1551 "goahead" and "goback" structure elements 1552 1553 1554 Release code2010a - 2010-02-16 10:40:04 -0500 1555 1556 [not summarized] 1557 1558 1559 Release data2010b - 2010-01-20 12:37:01 -0500 1560 1561 Mexico changes 1562 1563 1564 Release data2010a - 2010-01-18 08:30:04 -0500 1565 1566 changes to Dhaka 1567 1568 1569 Release data2009u - 2009-12-26 08:32:28 -0500 1570 1571 changes to DST in Bangladesh 1572 1573 1574 Release 2009t - 2009-12-21 13:24:27 -0500 1575 1576 [not summarized] 1577 1578 1579 Release data2009s - 2009-11-14 10:26:32 -0500 1580 1581 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 1582 1583 1584 Release 2009r - 2009-11-09 10:10:31 -0500 1585 1586 "antarctica" and "tz-link.htm" changes 1587 1588 1589 Release 2009q - 2009-11-02 09:12:40 -0500 1590 1591 with two corrections as reported by Eric Muller and Philip Newton 1592 1593 1594 Release data2009p - 2009-10-23 15:05:27 -0400 1595 1596 Argentina (including San Luis) changes (with the correction from 1597 Mariano Absatz) 1598 1599 1600 Release data2009o - 2009-10-14 16:49:38 -0400 1601 1602 Samoa (commentary only), Pakistan, and Bangladesh changes 1603 1604 1605 Release data2009n - 2009-09-22 15:13:38 -0400 1606 1607 added commentary for Argentina and a change to the end of DST in 1608 2009 in Pakistan 1609 1610 1611 Release data2009m - 2009-09-03 10:23:43 -0400 1612 1613 Samoa and Palestine changes 1614 1615 1616 Release data2009l - 2009-08-14 09:13:07 -0400 1617 1618 Samoa (comments only) and Egypt 1619 1620 1621 Release 2009k - 2009-07-20 09:46:08 -0400 1622 1623 [not summarized] 1624 1625 1626 Release data2009j - 2009-06-15 06:43:59 -0400 1627 1628 Bangladesh change (with a short turnaround since the DST change is 1629 impending) 1630 1631 1632 Release 2009i - 2009-06-08 09:21:22 -0400 1633 1634 updating for DST in Bangladesh this year 1635 1636 1637 Release 2009h - 2009-05-26 09:19:14 -0400 1638 1639 [not summarized] 1640 1641 1642 Release data2009g - 2009-04-20 16:34:07 -0400 1643 1644 Cairo 1645 1646 1647 Release data2009f - 2009-04-10 11:00:52 -0400 1648 1649 correct DST in Pakistan 1650 1651 1652 Release 2009e - 2009-04-06 09:08:11 -0400 1653 1654 [not summarized] 1655 1656 1657 Release 2009d - 2009-03-23 09:38:12 -0400 1658 1659 Morocco, Tunisia, Argentina, and American Astronomical Society changes 1660 1661 1662 Release data2009c - 2009-03-16 09:47:51 -0400 1663 1664 change to the start of Cuban DST 1665 1666 1667 Release 2009b - 2009-02-09 11:15:22 -0500 1668 1669 [not summarized] 1670 1671 1672 Release 2009a - 2009-01-21 10:09:39 -0500 1673 1674 [not summarized] 1675 1676 1677 Release data2008i - 2008-10-21 12:10:25 -0400 1678 1679 southamerica and zone.tab files, with Argentina DST rule changes and 1680 United States zone reordering and recommenting 1681 1682 1683 Release 2008h - 2008-10-13 07:33:56 -0400 1684 1685 [not summarized] 1686 1687 1688 Release 2008g - 2008-10-06 09:03:18 -0400 1689 1690 Fix a broken HTML anchor and update Brazil's DST transitions; 1691 there's also a slight reordering of information in tz-art.htm. 1692 1693 1694 Release data2008f - 2008-09-09 22:33:26 -0400 1695 1696 [not summarized] 1697 1698 1699 Release 2008e - 2008-07-28 14:11:17 -0400 1700 1701 changes by Arthur David Olson and Jesper Nrgaard Welen 1702 1703 1704 Release data2008d - 2008-07-07 09:51:38 -0400 1705 1706 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 1707 1708 1709 Release data2008c - 2008-05-19 17:48:03 -0400 1710 1711 Pakistan, Morocco, and Mongolia 1712 1713 1714 Release data2008b - 2008-03-24 08:30:59 -0400 1715 1716 including renaming Asia/Calcutta to Asia/Kolkata, with a backward 1717 link provided 1718 1719 1720 Release 2008a - 2008-03-08 05:42:16 -0500 1721 1722 [not summarized] 1723 1724 1725 Release 2007k - 2007-12-31 10:25:22 -0500 1726 1727 most importantly, changes to the "southamerica" file based on 1728 Argentina's readoption of daylight saving time 1729 1730 1731 Release 2007j - 2007-12-03 09:51:01 -0500 1732 1733 1. eliminate the "P" (parameter) macro; 1734 1735 2. the "noncontroversial" changes circulated on the time zone 1736 mailing list (less the changes to "logwtmp.c"); 1737 1738 3. eliminate "too many transition" errors when "min" is used in time 1739 zone rules; 1740 1741 4. changes by Paul Eggert (including updated information for Venezuela). 1742 1743 1744 Release data2007i - 2007-10-30 10:28:11 -0400 1745 1746 changes for Cuba and Syria 1747 1748 1749 Release 2007h - 2007-10-01 10:05:51 -0400 1750 1751 changes by Paul Eggert, as well as an updated link to the ICU 1752 project in tz-link.htm 1753 1754 1755 Release 2007g - 2007-08-20 10:47:59 -0400 1756 1757 changes by Paul Eggert 1758 1759 The "leapseconds" file has been updated to incorporate the most 1760 recent International Earth Rotation and Reference Systems Service 1761 (IERS) bulletin. 1762 1763 There's an addition to tz-art.htm regarding the television show "Medium". 1764 1765 1766 Release 2007f - 2007-05-07 10:46:46 -0400 1767 1768 changes by Paul Eggert (including Haiti, Turks and Caicos, and New 1769 Zealand) 1770 1771 changes to zic.c to allow hour values greater than 24 (along with 1772 Paul's improved time value overflow checking) 1773 1774 1775 Release 2007e - 2007-04-02 10:11:52 -0400 1776 1777 Syria and Honduras changes by Paul Eggert 1778 1779 zic.c variable renaming changes by Arthur David Olson 1780 1781 1782 Release 2007d - 2007-03-20 08:48:30 -0400 1783 1784 changes by Paul Eggert 1785 1786 the elimination of white space at the ends of lines 1787 1788 1789 Release 2007c - 2007-02-26 09:09:37 -0500 1790 1791 changes by Paul Eggert 1792 1793 1794 Release 2007b - 2007-02-12 09:34:20 -0500 1795 1796 Paul Eggert's proposed change to the quotation handling logic in zic.c. 1797 1798 changes to the commentary in "leapseconds" reflecting the IERS 1799 announcement that there is to be no positive leap second at the end 1800 of June 2007. 1801 1802 1803 Release 2007a - 2007-01-08 12:28:29 -0500 1804 1805 changes by Paul Eggert 1806 1807 Derick Rethan's Asmara change 1808 1809 Oscar van Vlijmen's Easter Island local mean time change 1810 1811 symbolic link changes 1812 1813 1814 Release 2006p - 2006-11-27 08:54:27 -0500 1815 1816 changes by Paul Eggert 1817 1818 1819 Release 2006o - 2006-11-06 09:18:07 -0500 1820 1821 changes by Paul Eggert 1822 1823 1824 Release 2006n - 2006-10-10 11:32:06 -0400 1825 1826 changes by Paul Eggert 1827 1828 1829 Release 2006m - 2006-10-02 15:32:35 -0400 1830 1831 changes for Uruguay, Palestine, and Egypt by Paul Eggert 1832 1833 (minimalist) changes to zic.8 to clarify "until" information 1834 1835 1836 Release data2006l - 2006-09-18 12:58:11 -0400 1837 1838 Paul's best-effort work on this coming weekend's Egypt time change 1839 1840 1841 Release 2006k - 2006-08-28 12:19:09 -0400 1842 1843 changes by Paul Eggert 1844 1845 1846 Release 2006j - 2006-08-21 09:56:32 -0400 1847 1848 changes by Paul Eggert 1849 1850 1851 Release code2006i - 2006-08-07 12:30:55 -0400 1852 1853 localtime.c fixes 1854 1855 Ken Pizzini's conversion script 1856 1857 1858 Release code2006h - 2006-07-24 09:19:37 -0400 1859 1860 adds public domain notices to four files 1861 1862 includes a fix for transition times being off by a second 1863 1864 adds a new recording to the "arts" file (information courtesy Colin Bowern) 1865 1866 1867 Release 2006g - 2006-05-08 17:18:09 -0400 1868 1869 northamerica changes by Paul Eggert 1870 1871 1872 Release 2006f - 2006-05-01 11:46:00 -0400 1873 1874 a missing version number problem is fixed (with thanks to Bradley 1875 White for catching the problem) 1876 1877 1878 Release 2006d - 2006-04-17 14:33:43 -0400 1879 1880 changes by Paul Eggert 1881 1882 added new items to tz-arts.htm that were found by Paul 1883 1884 1885 Release 2006c - 2006-04-03 10:09:32 -0400 1886 1887 two sets of data changes by Paul Eggert 1888 1889 a fencepost error fix in zic.c 1890 1891 changes to zic.c and the "europe" file to minimize differences 1892 between output produced by the old 32-bit zic and the new 64-bit 1893 version 1894 1895 1896 Release 2006b - 2006-02-20 10:08:18 -0500 1897 [tz32code2006b + tz64code2006b + tzdata2006b] 1898 1899 64-bit code 1900 1901 All SCCS IDs were bumped to "8.1" for this release. 1902 1903 1904 Release 2006a - 2006-01-30 08:59:31 -0500 1905 1906 changes by Paul Eggert (in particular, Indiana time zone moves) 1907 1908 an addition to the zic manual page to describe how special-case 1909 transitions are handled 1910 1911 1912 Release 2005r - 2005-12-27 09:27:13 -0500 1913 1914 Canadian changes by Paul Eggert 1915 1916 They also add "<pre>" directives to time zone data files and reflect 1917 changes to warning message logic in "zdump.c" (but with calls to 1918 "gettext" kept unbundled at the suggestion of Ken Pizzini). 1919 1920 1921 Release 2005q - 2005-12-13 09:17:09 -0500 1922 1923 Nothing earth-shaking here: 1924 1. Electronic mail addresses have been removed. 1925 2. Casts of the return value of exit have been removed. 1926 3. Casts of the argument of is.* macros have been added. 1927 4. Indentation in one section of zic.c has been fixed. 1928 5. References to dead URLs in the data files have been dealt with. 1929 1930 1931 Release 2005p - 2005-12-05 10:30:53 -0500 1932 1933 "systemv", "tz-link.htm", and "zdump.c" changes 1934 (less the casts of arguments to the is* macros) 1935 1936 1937 Release 2005o - 2005-11-28 10:55:26 -0500 1938 1939 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 1940 1941 zdump.c lint fixes by Arthur David Olson 1942 1943 1944 Release 2005n - 2005-10-03 09:44:09 -0400 1945 1946 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 1947 et al. changes) 1948 1949 1950 Release 2005m - 2005-08-29 12:15:40 -0400 1951 1952 changes by Paul Eggert (with a small tweak to the tz-art change) 1953 1954 a declaration of an unused variable has been removed from zdump.c 1955 1956 1957 Release 2005l - 2005-08-22 12:06:39 -0400 1958 1959 changes by Paul Eggert 1960 1961 overflow/underflow checks by Arthur David Olson, minus changes to 1962 the "Theory" file about the pending addition of 64-bit data (I grow 1963 less confident of the changes being accepted with each passing day, 1964 and the changes no longer increase the data files nine-fold--there's 1965 less than a doubling in size by my local Sun's reckoning) 1966 1967 1968 Release 2005k - 2005-07-14 14:14:24 -0400 1969 1970 The "leapseconds" file has been edited to reflect the recently 1971 announced leap second at the end of 2005. 1972 1973 I've also deleted electronic mail addresses from the files as an 1974 anti-spam measure. 1975 1976 1977 Release 2005j - 2005-06-13 14:34:13 -0400 1978 1979 These reflect changes to limit the length of time zone abbreviations 1980 and the characters used in those abbreviations. 1981 1982 There are also changes to handle POSIX-style "quoted" time zone 1983 environment variables. 1984 1985 The changes were circulated on the time zone mailing list; the only 1986 change since then was the removal of a couple of minimum-length of 1987 abbreviation checks. 1988 1989 1990 Release data2005i - 2005-04-21 15:04:16 -0400 1991 1992 changes (most importantly to Nicaragua and Haiti) by Paul Eggert 1993 1994 1995 Release 2005h - 2005-04-04 11:24:47 -0400 1996 1997 changes by Paul Eggert 1998 1999 minor changes to Makefile and zdump.c to produce more useful output 2000 when doing a "make typecheck" 2001 2002 2003 Release 2005g - 2005-03-14 10:11:21 -0500 2004 2005 changes by Paul Eggert (a change to current DST rules in Uruguay and 2006 an update to a link to time zone software) 2007 2008 2009 Release 2005f - 2005-03-01 08:45:32 -0500 2010 2011 data and documentation changes by Paul Eggert 2012 2013 2014 Release 2005e - 2005-02-10 15:59:44 -0500 2015 2016 [not summarized] 2017 2018 2019 Release code2005d - 2005-01-31 09:21:47 -0500 2020 2021 make zic complain about links to links if the -v flag is used 2022 2023 have "make public" do more code checking 2024 2025 add an include to "localtime.c" for the benefit of gcc systems 2026 2027 2028 Release 2005c - 2005-01-17 18:36:29 -0500 2029 2030 get better results when mktime runs on a system where time_t is double 2031 2032 changes to the data files (most importantly to Paraguay) 2033 2034 2035 Release 2005b - 2005-01-10 09:19:54 -0500 2036 2037 Get localtime and gmtime working on systems with exotic time_t types. 2038 2039 Update the leap second commentary in the "leapseconds" file. 2040 2041 2042 Release 2005a - 2005-01-01 13:13:44 -0500 2043 2044 [not summarized] 2045 2046 2047 Release code2004i - 2004-12-14 13:42:58 -0500 2048 2049 Deal with systems where time_t is unsigned. 2050 2051 2052 Release code2004h - 2004-12-07 11:40:18 -0500 2053 2054 64-bit-time_t changes 2055 2056 2057 Release 2004g - 2004-11-02 09:06:01 -0500 2058 2059 update to Cuba (taking effect this weekend) 2060 2061 other changes by Paul Eggert 2062 2063 correction of the spelling of Oslo 2064 2065 changed versions of difftime.c and private.h 2066 2067 2068 Release code2004f - 2004-10-21 10:25:22 -0400 2069 2070 Cope with wide-ranging tm_year values. 2071 2072 2073 Release 2004e - 2004-10-11 14:47:21 -0400 2074 2075 Brazil/Argentina/Israel changes by Paul Eggert 2076 2077 changes to tz-link.htm by Paul 2078 2079 one small fix to Makefile 2080 2081 2082 Release 2004d - 2004-09-22 08:27:29 -0400 2083 2084 Avoid overflow problems when TM_YEAR_BASE is added to an integer. 2085 2086 2087 Release 2004c - 2004-08-11 12:06:26 -0400 2088 2089 asctime-related changes 2090 2091 (variants of) some of the documentation changes suggested by Paul Eggert 2092 2093 2094 Release 2004b - 2004-07-19 14:33:35 -0400 2095 2096 data changes by Paul Eggert - most importantly, updates for Argentina 2097 2098 2099 Release 2004a - 2004-05-27 12:00:47 -0400 2100 2101 changes by Paul Eggert 2102 2103 Handle DST transitions that occur at the end of a month in some 2104 years but at the start of the following month in other years. 2105 2106 Add a copy of the correspondence that's the basis for claims about 2107 DST in the Navajo Nation. 2108 2109 2110 Release 2003e - 2003-12-15 09:36:47 -0500 2111 2112 changes by Arthur David Olson (primarily code changes) 2113 2114 changes by Paul Eggert (primarily data changes) 2115 2116 minor changes to "Makefile" and "northamerica" (in the latter case, 2117 optimization of the "Toronto" rules) 2118 2119 2120 Release 2003d - 2003-10-06 09:34:44 -0400 2121 2122 changes by Paul Eggert 2123 2124 2125 Release 2003c - 2003-09-16 10:47:05 -0400 2126 2127 Fix bad returns in zic.c's inleap function. 2128 Thanks to Bradley White for catching the problem! 2129 2130 2131 Release 2003b - 2003-09-16 07:13:44 -0400 2132 2133 Add a "--version" option (and documentation) to the zic and zdump commands. 2134 2135 changes to overflow/underflow checking in zic 2136 2137 a localtime typo fix. 2138 2139 Update the leapseconds and tz-art.htm files. 2140 2141 2142 Release 2003a - 2003-03-24 09:30:54 -0500 2143 2144 changes by Paul Eggert 2145 2146 a few additions and modifications to the tz-art.htm file 2147 2148 2149 Release 2002d - 2002-10-15 13:12:42 -0400 2150 2151 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 2152 2153 There's also a new time zone quote in "tz-art.htm". 2154 2155 2156 Release 2002c - 2002-04-04 11:55:20 -0500 2157 2158 changes by Paul Eggert 2159 2160 Change zic.c to avoid creating symlinks to files that don't exist. 2161 2162 2163 Release 2002b - 2002-01-28 12:56:03 -0500 2164 2165 [These change notes are for Release 2002a, which was corrupted. 2166 2002b was a corrected version of 2002a.] 2167 2168 changes by Paul Eggert 2169 2170 Update the "leapseconds" file to note that there'll be no leap 2171 second at the end of June, 2002. 2172 2173 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 2174 2175 Change to "difftime.c" to avoid sizeof problems. 2176 2177 2178 Release 2001d - 2001-10-09 13:31:32 -0400 2179 2180 changes by Paul Eggert 2181 2182 2183 Release 2001c - 2001-06-05 13:59:55 -0400 2184 2185 changes by Paul Eggert and Andrew Brown 2186 2187 2188 Release 2001b - 2001-04-05 16:44:38 -0400 2189 2190 changes by Paul Eggert (modulo jnorgard's typo fix) 2191 2192 tz-art.htm has been HTMLified. 2193 2194 2195 Release 2001a - 2001-03-13 12:57:44 -0500 2196 2197 changes by Paul Eggert 2198 2199 An addition to the "leapseconds" file: comments with the text of the 2200 latest IERS leap second notice. 2201 2202 Trailing white space has been removed from data file lines, and 2203 repeated spaces in "Rule Jordan" lines in the "asia" file have been 2204 converted to tabs. 2205 2206 2207 Release 2000h - 2000-12-14 15:33:38 -0500 2208 2209 changes by Paul Eggert 2210 2211 one typo fix in the "art" file 2212 2213 With providence, this is the last update of the millennium. 2214 2215 2216 Release 2000g - 2000-10-10 11:35:22 -0400 2217 2218 changes by Paul Eggert 2219 2220 correction of John Mackin's name submitted by Robert Elz 2221 2222 Garry Shandling's Daylight Saving Time joke (!?!) from the recent 2223 Emmy Awards broadcast. 2224 2225 2226 Release 2000f - 2000-08-10 09:31:58 -0400 2227 2228 changes by Paul Eggert 2229 2230 Added information in "tz-art.htm" on a Seinfeld reference to DST. 2231 2232 Error checking and messages in the "yearistype" script have been 2233 improved. 2234 2235 2236 Release 2000e - 2000-07-31 09:27:54 -0400 2237 2238 data changes by Paul Eggert 2239 2240 a change to the default value of the defined constant HAVE_STRERROR 2241 2242 the addition of a Dave Barry quote on DST to the tz-arts file 2243 2244 2245 Release 2000d - 2000-04-20 15:43:04 -0400 2246 2247 changes to the documentation and code of strftime for C99 conformance 2248 2249 a bug fix for date.c 2250 2251 These are based on (though modified from) changes by Paul Eggert. 2252 2253 2254 Release 2000c - 2000-03-04 10:31:43 -0500 2255 2256 changes by Paul Eggert 2257 2258 2259 Release 2000b - 2000-02-21 12:16:29 -0500 2260 2261 changes by Paul Eggert and Joseph Myers 2262 2263 modest tweaks to the tz-art.htm and tz-link.htm files 2264 2265 2266 Release 2000a - 2000-01-18 09:21:26 -0500 2267 2268 changes by Paul Eggert 2269 2270 The two hypertext documents have also been renamed. 2271 2272 2273 Release code1999i-data1999j - 1999-11-15 18:43:22 -0500 2274 2275 Paul Eggert's changes 2276 2277 additions to the "zic" manual page and the "Arts.htm" file 2278 2279 2280 Release code1999h-data1999i - 1999-11-08 14:55:21 -0500 2281 2282 [not summarized] 2283 2284 2285 Release data1999h - 1999-10-07 03:50:29 -0400 2286 2287 changes by Paul Eggert to "europe" (most importantly, fixing 2288 Lithuania and Estonia) 2289 2290 2291 Release 1999g - 1999-09-28 11:06:18 -0400 2292 2293 data changes by Paul Eggert (most importantly, the change for 2294 Lebanon that buys correctness for this coming Sunday) 2295 2296 The "code" file contains changes to "Makefile" and "checktab.awk" to 2297 allow better checking of time zone files before they are published. 2298 2299 2300 Release 1999f - 1999-09-23 09:48:14 -0400 2301 2302 changes by Arthur David Olson and Paul Eggert 2303 2304 2305 Release 1999e - 1999-08-17 15:20:54 -0400 2306 2307 changes circulated by Paul Eggert, although the change to handling 2308 of DST-specifying time zone names has been commented out for now 2309 (search for "XXX" in "localtime.c" for details). These files also 2310 do not make any changes to the start of DST in Brazil. 2311 2312 In addition to Paul's changes, there are updates to "Arts.htm" and 2313 cleanups of URLs. 2314 2315 2316 Release 1999d - 1999-03-30 11:31:07 -0500 2317 2318 changes by Paul Eggert 2319 2320 The Makefile's "make public" rule has also been changed to do a test 2321 compile of each individual time zone data file (which should help 2322 avoid problems such as the one we had with Nicosia). 2323 2324 2325 Release 1999c - 1999-03-25 09:47:47 -0500 2326 2327 changes by Paul Eggert, most importantly the change for Chile. 2328 2329 2330 Release 1999b - 1999-02-01 17:51:44 -0500 2331 2332 changes by Paul Eggert 2333 2334 code changes (suggested by Mani Varadarajan, mani at be.com) for 2335 correct handling of symbolic links when building using a relative directory 2336 2337 code changes to generate correct messages for failed links 2338 2339 updates to the URLs in Arts.htm 2340 2341 2342 Release 1999a - 1999-01-19 16:20:29 -0500 2343 2344 error message internationalizations and corrections in zic.c and 2345 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 2346 to whom thanks!) 2347 2348 2349 Release code1998h-data1998i - 1998-10-01 09:56:10 -0400 2350 2351 changes for Brazil, Chile, and Germany 2352 2353 support for use of "24:00" in the input files for the time zone compiler 2354 2355 2356 Release code1998g-data1998h - 1998-09-24 10:50:28 -0400 2357 2358 changes by Paul Eggert 2359 2360 correction to a define in the "private.h" file 2361 2362 2363 Release data1998g - 1998-08-11 03:28:35 -0000 2364 [tzdata1998g.tar.gz is missing!] 2365 2366 Lithuanian change provided by mgedmin at pub.osf.it 2367 2368 Move creation of the GMT link with Etc/GMT to "etcetera" (from 2369 "backward") to ensure that the GMT file is created even where folks 2370 don't want the "backward" links (as suggested by Paul Eggert). 2371 2372 2373 Release data1998f - 1998-07-20 13:50:00 -0000 2374 [tzdata1998f.tar.gz is missing!] 2375 2376 Update the "leapseconds" file to include the newly-announced 2377 insertion at the end of 1998. 2378 2379 2380 Release code1998f - 1998-06-01 10:18:31 -0400 2381 2382 addition to localtime.c by Guy Harris 2383 2384 2385 Release 1998e - 1998-05-28 09:56:26 -0400 2386 2387 The Makefile is changed to produce zoneinfo-posix rather than 2388 zoneinfo/posix, and to produce zoneinfo-leaps rather than 2389 zoneinfo/right. 2390 2391 data changes by Paul Eggert 2392 2393 changes from Guy Harris to provide asctime_r and ctime_r 2394 2395 A usno1998 file (substantially identical to usno1997) has been added. 2396 2397 2398 Release 1998d - 1998-05-14 11:58:34 -0400 2399 2400 changes to comments (in particular, elimination of references to CIA maps). 2401 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 2402 where changes occur. 2403 2404 2405 Release 1998c - 1998-02-28 12:32:26 -0500 2406 2407 changes by Paul Eggert (save the "French correction," on which I'll 2408 wait for the dust to settle) 2409 2410 symlink changes 2411 2412 changes and additions to Arts.htm 2413 2414 2415 Release 1998b - 1998-01-17 14:31:51 -0500 2416 2417 URL cleanups and additions 2418 2419 2420 Release 1998a - 1998-01-13 12:37:35 -0500 2421 2422 changes by Paul Eggert 2423 2424 2425 Release code1997i-data1997k - 1997-12-29 09:53:41 -0500 2426 2427 changes by Paul Eggert, with minor modifications from Arthur David 2428 Olson to make the files more browser friendly 2429 2430 2431 Release code1997h-data1997j - 1997-12-18 17:47:35 -0500 2432 2433 minor changes to put "TZif" at the start of each time zone information file 2434 2435 a rule has also been added to the Makefile so you can 2436 make zones 2437 to just recompile the zone information files (rather than doing a 2438 full "make install" with its other effects). 2439 2440 2441 Release data1997i - 1997-10-07 08:45:38 -0400 2442 2443 changes to Africa by Paul Eggert 2444 2445 2446 Release code1997g-data1997h - 1997-09-04 16:56:54 -0400 2447 2448 corrections for Uruguay (and other locations) 2449 2450 Arthur David Olson's simple-minded fix allowing mktime to both 2451 correctly handle leap seconds and correctly handle tm_sec values 2452 upon which arithmetic has been performed. 2453 2454 2455 Release code1997f-data1997g - 1997-07-19 13:15:02 -0400 2456 2457 Paul Eggert's updates 2458 2459 a small change to a function prototype; 2460 2461 "Music" has been renamed "Arts.htm", HTMLified, and augmented to 2462 include information on Around the World in Eighty Days. 2463 2464 2465 Release code1997e-data1997f - 1997-05-03 18:52:34 -0400 2466 2467 fixes to zic's error handling 2468 2469 changes inspired by the item circulated on Slovenia 2470 2471 The description of Web resources has been HTMLified for browsing 2472 convenience. 2473 2474 A new piece of tz-related music has been added to the "Music" file. 2475 2476 2477 Release code1997d-data1997e - 1997-03-29 12:48:52 -0500 2478 2479 Paul Eggert's latest suggestions 2480 2481 2482 Release code1997c-data1997d - 1997-03-07 20:37:54 -0500 2483 2484 changes to "zic.c" to correct performance of the "-s" option 2485 2486 a new file "usno1997" 2487 2488 2489 Release data1997c - 1997-03-04 09:58:18 -0500 2490 2491 changes in Israel 2492 2493 2494 Release 1997b - 1997-02-27 18:34:19 -0500 2495 2496 The data file incorporates the 1997 leap second. 2497 2498 The code file incorporates Arthur David Olson's take on the 2499 zic/multiprocessor/directory-creation situation. 2500 2501 2502 Release 1997a - 1997-01-21 09:11:10 -0500 2503 2504 Paul Eggert's Antarctica (and other changes) 2505 2506 Arthur David Olson finessed the "getopt" issue by checking against 2507 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 2508 is returned while SunOS 5.5's manual says EOF is returned). 2509 2510 2511 Release code1996o-data1996n - 1996-12-27 21:42:05 -0500 2512 2513 Paul Eggert's latest changes 2514 2515 2516 Release code1996n - 1996-12-16 09:42:02 -0500 2517 2518 link snapping fix from Bruce Evans (via Garrett Wollman) 2519 2520 2521 Release data1996m - 1996-11-24 02:37:34 -0000 2522 [tzdata1996m.tar.gz is missing!] 2523 2524 Paul Eggert's batch of changes 2525 2526 2527 Release code1996m-data1996l - 1996-11-05 14:00:12 -0500 2528 2529 No functional changes here; the files have simply been changed to 2530 make more use of ISO style dates in comments. The names of the above 2531 files now include the year in full. 2532 2533 2534 Release code96l - 1996-09-08 17:12:20 -0400 2535 2536 tzcode96k was missing a couple of pieces. 2537 2538 2539 Release 96k - 1996-09-08 16:06:22 -0400 2540 2541 the latest round of changes from Paul Eggert 2542 2543 the recent Year 2000 material 2544 2545 2546 Release code96j - 1996-07-30 13:18:53 -0400 2547 2548 Set sp->typecnt as suggested by Timothy Patrick Murphy. 2549 2550 2551 Release code96i - 1996-07-27 20:11:35 -0400 2552 2553 Paul's suggested patch for strftime %V week numbers 2554 2555 2556 Release data96i - 1996-07-01 18:13:04 -0400 2557 2558 "northamerica" and "europe" changes by Paul Eggert 2559 2560 2561 Release code96h - 1996-06-05 08:02:21 -0400 2562 2563 fix for handling transitions specified in Universal Time 2564 2565 Some "public domain" notices have also been added. 2566 2567 2568 Release code96g - 1996-05-16 14:00:26 -0400 2569 2570 fix for the simultaneous-DST-and-zone-change challenge 2571 2572 2573 Release data96h - 1996-05-09 17:40:51 -0400 2574 2575 changes by Paul Eggert 2576 2577 2578 Release code96f-data96g - 1996-05-03 03:09:59 -0000 2579 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 2580 2581 The changes get us some of the way to fixing the problems noted in Paul 2582 Eggert's letter yesterday (in addition to a few others). The approach 2583 has been to make zic a bit smarter about figuring out what time zone 2584 abbreviations apply just after the time specified in the "UNTIL" part 2585 of a zone line. Putting the smarts in zic means avoiding having 2586 transition times show up in both "Zone" lines and "Rule" lines, which 2587 in turn avoids multiple transition time entries in time zone files. 2588 (This also makes the zic input files such as "europe" a bit shorter and 2589 should ease maintenance.) 2590 2591 2592 Release data96f - 1996-04-19 19:20:03 -0000 2593 [tzdata96f.tar.gz is missing!] 2594 2595 The only changes are to the "northamerica" file; the time zone 2596 abbreviation for Denver is corrected to MST (and MDT), and the 2597 comments for Mexico have been updated. 2598 2599 2600 Release data96e - 1996-03-19 17:37:26 -0500 2601 2602 Proposals by Paul Eggert, in particular the Portugal change that 2603 comes into play at the end of this month. 2604 2605 2606 Release data96d - 1996-03-18 20:49:39 -0500 2607 2608 [not summarized] 2609 2610 2611 Release code96e - 1996-02-29 15:43:27 -0000 2612 [tzcode96e.tar.gz is missing!] 2613 2614 internationalization changes and the fix to the documentation for strftime 2615 2616 2617 Release code96d-data96c - 1996-02-12 11:05:27 -0500 2618 2619 The "code" file simply updates Bob Kridle's electronic address. 2620 2621 The "data" file updates rules for Mexico. 2622 2623 2624 Release data96b - 1996-01-27 15:44:42 -0500 2625 2626 Kiribati change 2627 2628 2629 Release code96c - 1996-01-16 16:58:15 -0500 2630 2631 leap-year streamlining and binary-search changes 2632 2633 fix to newctime.3 2634 2635 2636 Release code96b - 1996-01-10 20:42:39 -0500 2637 2638 fixes and enhancements from Paul Eggert, including code that 2639 emulates the behavior of recent versions of the SunOS "date" 2640 command. 2641 2642 2643 Release 96a - 1996-01-06 09:08:24 -0500 2644 2645 Israel updates 2646 2647 fixes to strftime.c for correct ISO 8601 week number generation, 2648 plus support for two new formats ('G' and 'g') to give ISO 8601 year 2649 numbers (which are not necessarily the same as calendar year numbers) 2650 2651 2652 Release code95i-data95m - 1995-12-21 12:46:47 -0500 2653 2654 The latest revisions from Paul Eggert are included, the usno1995 2655 file has been updated, and a new file ("WWW") covering useful URLs 2656 has been added. 2657 2658 2659 Release code95h-data95l - 1995-12-19 18:10:12 -0500 2660 2661 A simplification of a macro definition, a change to data for Sudan, 2662 and (for last minute shoppers) notes in the "Music" file on the CD 2663 "Old Man Time". 2664 2665 2666 Release code95g-data95k - 1995-10-30 10:32:47 -0500 2667 2668 (slightly reformatted) 8-bit-clean proposed patch 2669 2670 minor patch: US/Eastern -> America/New_York 2671 2672 snapshot of the USNO's latest data ("usno1995") 2673 2674 some other minor cleanups 2675 2676 2677 Release code95f-data95j - 1995-10-28 21:01:34 -0000 2678 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 2679 2680 European cleanups 2681 2682 support for 64-bit time_t's 2683 2684 optimization in localtime.c 2685 2686 2687 Release code95e - 1995-10-13 13:23:57 -0400 2688 2689 the mktime change to scan from future to past when trying to find time zone 2690 offsets 2691 2692 2693 Release data95i - 1995-09-26 10:43:26 -0400 2694 2695 For Canada/Central, guess that the Sun customer's "one week too 2696 early" was just a approximation, and the true error is one month 2697 too early. This is consistent with the rest of Canada. 2698 2699 2700 Release data95h - 1995-09-21 11:26:48 -0400 2701 2702 latest changes from Paul Eggert 2703 2704 2705 Release code95d - 1995-09-14 11:14:45 -0400 2706 2707 the addition of a "Music" file, which documents four recorded 2708 versions of the tune "Save That Time". 2709 2710 2711 Release data95g - 1995-09-01 17:21:36 -0400 2712 2713 "yearistype" correction 2714 2715 2716 Release data95f - 1995-08-28 20:46:56 -0400 2717 2718 Paul Eggert's change to the australasia file 2719 2720 2721 Release data95e - 1995-07-08 18:02:34 -0400 2722 2723 The only change is a leap second at the end of this year. 2724 Thanks to Bradley White for forwarding news on the leap second. 2725 2726 2727 Release data95d - 1995-07-03 13:26:22 -0400 2728 2729 Paul Eggert's changes 2730 2731 2732 Release data95c - 1995-07-02 19:19:28 -0400 2733 2734 changes to "asia", "backward", "europe", and "southamerica" 2735 (read: northamericacentrics need not apply) 2736 2737 2738 Release code95c - 1995-03-13 14:00:46 -0500 2739 2740 one-line fix for sign extension problems in detzcode 2741 2742 2743 Release 95b - 1995-03-04 11:22:38 -0500 2744 2745 Minor changes in both: 2746 2747 The "code" file contains a workaround for the lack of "unistd.h" in 2748 Microsoft C++ version 7. 2749 2750 The "data" file contains a fixed "Link" for America/Shiprock. 2751 2752 2753 Release 94h - 1994-12-10 12:51:14 -0500 2754 2755 The files: 2756 2757 * incorporate the changes to "zdump" and "date" to make changes to 2758 the "TZ" environment variable permanent; 2759 2760 * incorporate the table changes by Paul Eggert; 2761 2762 * include (and document) support for universal time specifications in 2763 data files - but do not (yet) include use of this feature in the 2764 data files. 2765 2766 Think of this as "TZ Classic" - the software has been set up not to break if 2767 universal time shows up in its input, and data entries have been 2768 left as is so as not to break existing implementations. 2769 2770 2771 Release data94f - 1994-08-20 12:56:09 -0400 2772 2773 (with thanks!) the latest data updates from Paul Eggert 2774 2775 2776 Release data94e - 1994-06-04 13:13:53 -0400 2777 2778 [not summarized] 2779 2780 2781 Release code94g - 1994-05-05 12:14:07 -0400 2782 2783 fix missing "optind.c" and a reference to it in the Makefile 2784 2785 2786 Release code94f - 1994-05-05 13:00:33 -0000 2787 [tzcode94f.tar.gz is missing!] 2788 2789 changes to avoid overflow in difftime, as well as changes to cope 2790 with the 52/53 challenge in strftime 2791 2792 2793 Release code94e - 1994-03-30 23:32:59 -0500 2794 2795 change for the benefit of PCTS 2796 2797 2798 Release 94d - 1994-02-24 15:42:25 -0500 2799 2800 Avoid clashes with POSIX semantics for zones such as GMT+4. 2801 2802 Some other very minor housekeeping is also present. 2803 2804 2805 Release code94c - 1994-02-10 08:52:40 -0500 2806 2807 Fix bug where mkdirs was broken unless you compile with 2808 -fwritable-strings (which is generally losing to do). 2809 2810 2811 Release 94b - 1994-02-07 10:04:33 -0500 2812 2813 work by Paul Eggert who notes: 2814 2815 I found another book of time zone histories by E W Whitman; it's not 2816 as extensive as Shanks but has a few goodies of its own. I used it 2817 to update the tables. I also fixed some more as a result of 2818 correspondence with Adam David and Peter Ilieve, and move some stray 2819 links from 'europe' to 'backward'. I corrected some scanning errors 2820 in usno1989. 2821 2822 As far as the code goes, I fixed zic to allow years in the range 2823 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 2824 And I cleaned up the zic documentation a little bit. 2825 2826 2827 Release data94a - 1994-02-03 08:58:54 -0500 2828 2829 It simply incorporates the recently announced leap second into the 2830 "leapseconds" file. 2831 2832 2833 Release 93g - 1993-11-22 17:28:27 -0500 2834 2835 Paul Eggert has provided a good deal of historic information (based 2836 on Shanks), and there are some code changes to deal with the buglets 2837 that crawled out in dealing with the new information. 2838 2839 2840 Release 93f - 1993-10-15 12:27:46 -0400 2841 2842 Paul Eggert's changes 2843 2844 2845 Release 93e - 1993-09-05 21:21:44 -0400 2846 2847 This has updated data for Israel, England, and Kwajalein. There's 2848 also an update to "zdump" to cope with Kwajalein's 24-hour jump. 2849 Thanks to Paul Eggert and Peter Ilieve for the changes. 2850 2851 2852 Release 93d - 1993-06-17 23:34:17 -0400 2853 2854 new fix and new data on Israel 2855 2856 2857 Release 93c - 1993-06-06 19:31:55 -0400 2858 2859 [not summarized] 2860 2861 2862 Release 93b - 1993-02-02 14:53:58 -0500 2863 2864 updated "leapseconds" file 2865 2866 2867 Release 93 - 1993-01-08 07:01:06 -0500 2868 2869 At kre's suggestion, the package has been split in two - a code piece 2870 (which also includes documentation) that's only of use to folks who 2871 want to recompile things and a data piece useful to anyone who can 2872 run "zic". 2873 2874 The new version has a few changes to the data files, a few 2875 portability changes, and an off-by-one fix (with thanks to 2876 Tom Karzes at deshaw.com for providing a description and a 2877 solution). 2878 2879 2880 Release 92c - 1992-11-21 17:35:36 -0000 2881 [tz92c.tar.Z is missing!] 2882 2883 The fallout from the latest round of DST transitions. 2884 2885 There are changes for Portugal, Saskatchewan, and "Pacific-New"; 2886 there's also a change to "zic.c" that makes it portable to more systems. 2887 2888 2889 Release 92 - 1992-04-25 18:17:03 -0000 2890 [tz92.tar.Z is missing!] 2891 2892 By popular demand (well, at any rate, following a request by kre at munnari) 2893 2894 2895 The 1989 update of the time zone package featured: 2896 2897 * POSIXization (including interpretation of POSIX-style TZ environment 2898 variables, provided by Guy Harris), 2899 * ANSIfication (including versions of "mktime" and "difftime"), 2900 * SVIDulation (an "altzone" variable) 2901 * MACHination (the "gtime" function) 2902 * corrections to some time zone data (including corrections to the rules 2903 for Great Britain and New Zealand) 2904 * reference data from the United States Naval Observatory for folks who 2905 want to do additional time zones 2906 * and the 1989 data for Saudi Arabia. 2907 2908 (Since this code will be treated as "part of the implementation" in some 2909 places and as "part of the application" in others, there's no good way to 2910 name functions, such as timegm, that are not part of the proposed ANSI C 2911 standard; such functions have kept their old, underscore-free names in this 2912 update.) 2913 2914 And the "dysize" function has disappeared; it was present to allow 2915 compilation of the "date" command on old BSD systems, and a version of "date" 2916 is now provided in the package. The "date" command is not created when you 2917 "make all" since it may lack options provided by the version distributed with 2918 your operating system, or may not interact with the system in the same way 2919 the native version does. 2920 2921 Since POSIX frowns on correct leap second handling, the default behavior of 2922 the "zic" command (in the absence of a "-L" option) has been changed to omit 2923 leap second information from its output files. 2924 2925 2926 ----- 2927 Notes 2928 2929 This file contains copies of the part of each release announcement 2930 that talks about the changes in that release. The text has been 2931 adapted and reformatted for the purposes of this file. 2932 2933 Typically a release R consists of a pair of tarball files, 2934 tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 2935 code2010a, data2012c) consist of just one or the other tarball, and a 2936 few (e.g., code2012c-data2012d) have tarballs with mixed version 2937 numbers. 2938 2939 Release time stamps are taken from the release's commit (for newer, 2940 git releases), from the newest file in the tarball (for older 2941 releases, where this info is available) or from the email announcing 2942 the release (if all else fails; these are marked with a time zone of 2943 -0000 and an "is missing!" comment). 2944 2945 Earlier versions of the code and data were not announced on the tz 2946 list and are not summarized here. 2947 2948 This file is in the public domain. 2949 2950 Local Variables: 2951 coding: utf-8 2952 End: 2953
Indexes created Sat Sep 27 14:09:57 GMT 2025