Sync zoneinfo database with tzdata2015a from ftp://ftp.iana.org/tz/releases
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1News for the tz database
2
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3Release 2015a - 2015-01-29 22:35:20 -0800
4
5 Changes affecting future time stamps
6
7 The Mexican state of Quintana Roo, represented by America/Cancun,
8 will shift from Central Time with DST to Eastern Time without DST
9 on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.)
10
11 Chile will not change clocks in April or thereafter; its new standard time
12 will be its old daylight saving time. This affects America/Santiago,
13 Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.)
14
15 New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49.
16 (Thanks to Tim Parenti.)
17
18 Changes affecting past time stamps
19
20 Iceland observed DST in 1919 and 1921, and its 1939 fallback
21 transition was Oct. 29, not Nov. 29. Remove incorrect data from
22 Shanks about time in Iceland between 1837 and 1908.
23
24 Some more zones have been turned into links, when they differed
25 from existing zones only for older time stamps. As usual,
26 these changes affect UTC offsets in pre-1970 time stamps only.
27 Their old contents have been moved to the 'backzone' file.
28 The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait,
29 and Asia/Muscat.
30
31 Changes affecting code
32
33 tzalloc now scrubs time zone abbreviations compatibly with the way
34 that tzset always has, by replacing invalid bytes with '_' and by
35 shortening too-long abbreviations.
36
37 tzselect ports to POSIX awk implementations, no longer mishandles
38 POSIX TZ settings when GNU awk is used, and reports POSIX TZ
39 settings to the user. (Thanks to Stefan Kuhn.)
40
41 Changes affecting build procedure
42
43 'make check' now checks for links to links in the data.
44 One such link (for Africa/Asmera) has been fixed.
45 (Thanks to Stephen Colebourne for pointing out the problem.)
46
47 Changes affecting commentary
48
49 The leapseconds file commentary now mentions the expiration date.
50 (Problem reported by Martin Burnicki.)
51
52 Update Mexican Library of Congress URL.
53
54
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55Release 2014j - 2014-11-10 17:37:11 -0800
56
57 Changes affecting current and future time stamps
58
59 Turks & Caicos' switch from US eastern time to UTC-4 year-round
60 did not occur on 2014-11-02 at 02:00. It's currently scheduled
61 for 2015-11-01 at 02:00. (Thanks to Chris Walton.)
62
63 Changes affecting past time stamps
64
65 Many pre-1989 time stamps have been corrected for Asia/Seoul and
66 Asia/Pyongyang, based on sources for the Korean-language Wikipedia
67 entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no
68 longer guess that Pyongyang mimicked Seoul time after World War II,
69 as this is politically implausible.
70
71 Some more zones have been turned into links, when they differed
72 from existing zones only for older time stamps. As usual,
73 these changes affect UTC offsets in pre-1970 time stamps only.
74 Their old contents have been moved to the 'backzone' file.
75 The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
76 Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
77 Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and
78 Indian/Mayotte.
79
80 Changes affecting commentary
81
82 The commentary is less enthusiastic about Shanks as a source,
83 and is more careful to distinguish UT from UTC.
84
85
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86Release 2014i - 2014-10-21 22:04:57 -0700
87
88 Changes affecting future time stamps
89
90 Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
91 (Thanks to Ken Rylander for the heads-up.) Guess that future
92 years will use a similar pattern.
93
94 A new Zone Pacific/Bougainville, for the part of Papua New Guinea
95 that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
96 (Thanks to Kiley Walbom for the heads-up.)
97
98 Changes affecting time zone abbreviations
99
100 Since Belarus is not changing its clocks even though Moscow is,
101 the time zone abbreviation in Europe/Minsk is changing from FET
102 to its more-traditional value MSK on 2014-10-26 at 01:00.
103 (Thanks to Alexander Bokovoy for the heads-up about Belarus.)
104
105 The new abbreviation IDT stands for the pre-1976 use of UT+8 in
106 Indochina, to distinguish it better from ICT (UT+7).
107
108 Changes affecting past time stamps
109
110 Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976
111 (thanks to Trần Ngọc Quân for an indirect pointer to Trần Tiến Bình's
112 authoritative book). Asia/Ho_Chi_Minh has been added to
113 zone1970.tab, to give tzselect users in Vietnam two choices,
114 since north and south Vietnam disagreed after our 1970 cutoff.
115
116 Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
117 they differed from existing zones only for older time stamps. As
118 usual, these changes affect pre-1970 time stamps only. Their old
119 contents have been moved to the 'backzone' file.
120
121 Changes affecting code
122
123 The time-related library functions now set errno on failure, and
124 some crashes in the new tzalloc-related library functions have
125 been fixed. (Thanks to Christos Zoulas for reporting most of
126 these problems and for suggesting fixes.)
127
128 If USG_COMPAT is defined and the requested time stamp is standard time,
129 the tz library's localtime and mktime functions now set the extern
130 variable timezone to a value appropriate for that time stamp; and
131 similarly for ALTZONE, daylight saving time, and the altzone variable.
132 This change is a companion to the tzname change in 2014h, and is
133 designed to make timezone and altzone more compatible with tzname.
134
135 The tz library's functions now set errno to EOVERFLOW if they fail
136 because the result cannot be represented. ctime and ctime_r now
137 return NULL and set errno when a time stamp is out of range, rather
138 than having undefined behavior.
139
140 Some bugs associated with the new 2014g functions have been fixed.
141 This includes a bug that largely incapacitated the new functions
142 time2posix_z and posix2time_z. (Thanks to Christos Zoulas.)
143 It also includes some uses of uninitialized variables after tzalloc.
144 The new code uses the standard type 'ssize_t', which the Makefile
145 now gives porting advice about.
146
147 Changes affecting commentary
148
149 Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis).
150
151
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152Release 2014h - 2014-09-25 18:59:03 -0700
153
154 Changes affecting past time stamps
155
156 America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
157
158 Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
159 not 1920-01-06. The old entry was based on a misinterpretation of Shanks.
160
161 Some more zones have been turned into links, when they differed
162 from existing zones only for older time stamps. As usual,
163 these changes affect UTC offsets in pre-1970 time stamps only.
164 Their old contents have been moved to the 'backzone' file.
165 The affected zones are: Africa/Blantyre, Africa/Bujumbura,
166 Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
167 Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
168
169 Changes affecting code
170
171 zdump -V and -v now output gmtoff= values on all platforms,
172 not merely on platforms defining TM_GMTOFF.
173
174 The tz library's localtime and mktime functions now set tzname to a value
175 appropriate for the requested time stamp, and zdump now uses this
176 on platforms not defining TM_ZONE, fixing a 2014g regression.
177 (Thanks to Tim Parenti for reporting the problem.)
178
179 The tz library no longer sets tzname if localtime or mktime fails.
180
181 zdump -c no longer mishandles transitions near year boundaries.
182 (Thanks to Tim Parenti for reporting the problem.)
183
184 An access to uninitalized data has been fixed.
185 (Thanks to Jörg Richter for reporting the problem.)
186
187 When THREAD_SAFE is defined, the code ports to the C11 memory model.
188 A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined
189 and two threads race to initialize data used by gmtime-like functions.
190 (Thanks to Andy Heninger for reporting the problems.)
191
192 Changes affecting build procedure
193
194 'make check' now checks better for properly-sorted data.
195
196 Changes affecting documentation and commentary
197
198 zdump's gmtoff=N output is now documented, and its isdst=D output
199 is now documented to possibly output D values other than 0 or 1.
200
201 zdump -c's treatment of years is now documented to use the
202 Gregorian calendar and Universal Time without leap seconds,
203 and its behavior at cutoff boundaries is now documented better.
204 (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.)
205
206 Programs are now documented to use the proleptic Gregorian calendar.
207 (Thanks to Alan Barrett for the suggestion.)
208
209 Fractional-second GMT offsets have been documented for civil time
210 in 19th-century Chennai, Jakarta, and New York.
211
212
213Release 2014g - 2014-08-28 12:31:23 -0700
214
215 Changes affecting future time stamps
216
217 Turks & Caicos is switching from US eastern time to UTC-4 year-round,
218 modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
03b0b587 219 [As noted in 2014j, this switch was later delayed.]
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220
221 Changes affecting past time stamps
222
223 Time in Russia or the USSR before 1926 or so has been corrected by
224 a few seconds in the following zones: Asia/Irkutsk,
225 Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi,
226 Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For
227 Asia/Yekaterinburg the correction is a few minutes. (Thanks to
228 Vladimir Karpinsky.)
229
230 The Portuguese decree of 1911-05-26 took effect on 1912-01-01.
231 This affects 1911 time stamps in Africa/Bissau, Africa/Luanda,
232 Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912
233 GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32.
234 (Thanks to Stephen Colebourne for pointing to the decree.)
235
236 Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
237
238 A new file 'backzone' contains data which may appeal to
239 connoisseurs of old time stamps, although it is out of scope for
240 the tz database, is often poorly sourced, and contains some data
241 that is known to be incorrect. The new file is not recommended
242 for ordinary use and its entries are not installed by default.
243 (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and
244 Isle of Man entries.)
245
246 Some more zones have been turned into links, when they differed
247 from existing zones only for older time stamps. As usual,
248 these changes affect UTC offsets in pre-1970 time stamps only.
249 Their old contents have been moved to the 'backzone' file.
250 The affected zones are: Africa/Bangui, Africa/Brazzaville,
251 Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda,
252 Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo.
253
254 Changes affecting code
255
256 Unless NETBSD_INSPIRED is defined to 0, the tz library now
257 supplies functions for creating and using objects that represent
258 time zones. The new functions are tzalloc, tzfree, localtime_rz,
259 mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and
260 time2posix_z. They are intended for performance: for example,
261 localtime_rz (unlike localtime_r) is trivially thread-safe without
262 locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired
263 functions, and to Alan Barrett and Jonathan Lennox for helping to
264 debug the change.)
265
266 zdump now builds with the tz library unless USE_LTZ is defined to 0,
267 This lets zdump use tz features even if the system library lacks them.
268 To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0
269 TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='.
270
271 zdump now uses localtime_rz if available, as it's significantly faster,
272 and it can help zdump better diagnose invalid time zone names.
273 Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ
274 defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is
275 not available, zdump now uses localtime_r and tzset if available,
276 as this is a bit cleaner and faster than plain localtime. Compile
277 with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system
278 lacks these two functions.
279
280 If THREAD_SAFE is defined to 1, the tz library is now thread-safe.
281 Although not needed for tz's own applications, which are single-threaded,
282 this supports POSIX better if the tz library is used in multithreaded apps.
283
284 Some crashes have been fixed when zdump or the tz library is given
285 invalid or outlandish input.
286
287 The tz library no longer mishandles leap seconds on platforms with
288 unsigned time_t in time zones that lack ordinary transitions after 1970.
289
290 The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not
291 already defined, to make it easier to configure on common platforms.
292 Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this.
293
294 Unless the new macro UNINIT_TRAP is defined to 1, the tz code now
295 assumes that reading uninitialized memory yields garbage values
296 but does not cause other problems such as traps.
297
298 If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now
299 more likely to guess right for ambiguous time stamps near
300 transitions where tm_isdst does not change.
301
302 If HAVE_STRFTIME_L is defined to 1, the tz library now defines
303 strftime_l for compatibility with recent versions of POSIX.
304 Only the C locale is supported, though. HAVE_STRFTIME_L defaults
305 to 1 on recent POSIX versions, and to 0 otherwise.
306
307 tzselect -c now uses a hybrid distance measure that works better
308 in Africa. (Thanks to Alan Barrett for noting the problem.)
309
310 The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used,
311 or when time_tz is defined.
312
313 When HAVE_UTMPX_H is set the 'date' command now builds on systems
314 whose <utmpx.h> file does not define WTMPX_FILE, and when setting
315 the date it updates the wtmpx file if _PATH_WTMPX is defined.
316 This affects GNU/Linux and similar systems.
317
318 For easier maintenance later, some C code has been simplified,
319 some lint has been removed, and the code has been tweaked so that
320 plain 'make' is more likely to work.
321
322 The C type 'bool' is now used for boolean values, instead of 'int'.
323
324 The long-obsolete LOCALE_HOME code has been removed.
325
326 The long-obsolete 'gtime' function has been removed.
327
328 Changes affecting build procedure
329
330 'zdump' no longer links in ialloc.o, as it's not needed.
331
332 'make check_time_t_alternatives' no longer assumes GNU diff.
333
334 Changes affecting distribution tarballs
335
336 The files checktab.awk and zoneinfo2tdf.pl are now distributed in
337 the tzdata tarball instead of the tzcode tarball, since they help
338 maintain the data. The NEWS and Theory files are now also
339 distributed in the tzdata tarball, as they're relevant for data.
340 (Thanks to Alan Barrett for pointing this out.) Also, the
341 leapseconds.awk file is no longer distributed in the tzcode
342 tarball, since it belongs in the tzdata tarball (where 2014f
343 inadvertently also distributed it).
344
345 Changes affecting documentation and commentary
346
347 A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for
348 suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms
349 for debugging it.)
350
351 The man pages have been updated to use function prototypes,
352 to document thread-safe variants like localtime_r, and to document
353 the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and
354 mktime_z.
355
356 The fields in Link lines have been renamed to be more descriptive
357 and more like the parameters of 'ln'. LINK-FROM has become TARGET,
358 and LINK-TO has become LINK-NAME.
359
360 tz-link.htm mentions the IETF's tzdist working group; Windows
361 Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab.
362
363 Some broken URLs have been fixed in the commentary. (Thanks to
364 Lester Caine.)
365
366 Commentary about Philippines DST has been updated, and commentary
367 on pre-1970 time in India has been added.
368
369
370Release 2014f - 2014-08-05 17:42:36 -0700
371
372 Changes affecting future time stamps
373
374 Russia will subtract an hour from most of its time zones on 2014-10-26
375 at 02:00 local time. (Thanks to Alexander Krivenyshev.)
376 There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky
377 Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug
378 (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast
379 (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic
380 (Europe/Samara) are not changing their clocks. The changed zones are
381 Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd,
382 Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk,
383 Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga,
384 Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours
385 subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected,
386 but not its UTC offset. Two zones are added: Asia/Chita (split
387 from Asia/Yakutsk, and also with two hours subtracted) and
388 Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour
389 subtracted). (Thanks to Tim Parenti for much of the above.)
390
391 Changes affecting time zone abbreviations
392
393 Australian eastern time zone abbreviations are now AEST/AEDT not EST,
394 and similarly for the other Australian zones. That is, for eastern
395 standard and daylight saving time the abbreviations are AEST and AEDT
396 instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT,
397 and AWST/AWDT are now used instead of the former CST, CWST, and WST.
398 This change does not affect UTC offsets, only time zone abbreviations.
399 (Thanks to Rich Tibbett and many others.)
400
401 Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7)
402 effective 2014-10-26 at 02:00 local time.
403
404 The time zone abbreviation for Xinjiang Time (observed in Ürümqi)
405 has been changed from URUT to XJT. (Thanks to Luther Ma.)
406
407 Prefer MSK/MSD for Moscow time in Russia, even in other cities.
408 Similarly, prefer EET/EEST for eastern European time in Russia.
409
410 Change time zone abbreviations in (western) Samoa to use "ST" and
411 "DT" suffixes, as this is more likely to match common practice.
412 Prefix "W" to (western) Samoa time when its standard-time offset
413 disagrees with that of American Samoa.
414
415 America/Metlakatla now uses PST, not MeST, to abbreviate its time zone.
416
417 Time zone abbreviations have been updated for Japan's two time
418 zones used 1896-1937. JWST now stands for Western Standard
419 Time, and JCST for Central Standard Time (formerly this was CJT).
420 These abbreviations are now used for time in Korea, Taiwan,
421 and Sakhalin while controlled by Japan.
422
423 Changes affecting past time stamps
424
425 China's five zones have been simplified to two, since the post-1970
426 differences in the other three seem to have been imaginary. The
427 zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been
428 removed; backwards-compatibility links still work, albeit with
429 different behaviors for time stamps before May 1980. Asia/Urumqi's
430 1980 transition to UTC+8 has been removed, so that it is now at
431 UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl;
432 Treindl sent helpful translations of two papers by Guo Qingsheng.)
433
434 Some zones have been turned into links, when they differed from existing
435 zones only for older UTC offsets where data entries were likely invented.
436 These changes affect UTC offsets in pre-1970 time stamps only. This is
437 similar to the change in release 2013e, except this time for western
438 Africa. The affected zones are: Africa/Bamako, Africa/Banjul,
439 Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome,
440 Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and
441 Atlantic/St_Helena. This also affects the backwards-compatibility
442 link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne,
443 Tim Parenti, and David Patte for reporting problems in earlier
444 versions of this change.)
445
446 Asia/Shanghai's pre-standard-time UT offset has been changed from
447 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its
448 transition to standard time has been changed from 1928 to 1901.
449
450 Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01,
451 then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945.
452 In 1946 it observed DST from 05-15 through 09-30; in 1947
453 from 04-15 through 10-31; and in 1979 from 07-01 through 09-30.
454 (Thanks to Yu-Cheng Chuang.)
455
456 Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950.
457
458 Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not
459 10-03 at 00:00. (Thanks to Konstantin Hyppönen.)
460
461 Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period
462 from 1911 to 1950.
463
464 Pacific/Chatham has been changed to New Zealand standard time plus
465 45 minutes for the period before 1957, reflecting a 1956 remark in
466 the New Zealand parliament.
467
468 Europe/Budapest has several pre-1946 corrections: in 1918 the transition
469 out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in
470 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08
471 not 04-06 at 02:00; and there was no DST in 1920.
472
473 Africa/Accra is now assumed to have observed DST from 1920 through 1935.
474
475 Time in Russia before 1927 or so has been corrected by a few seconds in
476 the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi,
477 Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and
478 Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0
479 point. (Thanks to Vladimir Karpinsky for the Moscow changes.)
480
481 Changes affecting data format
482
483 A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data.
484 The new file's extended format allows multiple country codes per zone.
485 The older file is still installed but is deprecated; its format is
486 not changing and it will still be distributed for a while, but new
487 applications should use the new file.
488
489 The new file format simplifies maintenance of obscure locations.
490 To test this, it adds coverage for the Crozet Islands and the
491 Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.)
492
493 The file 'iso3166.tab' is planned to switch from ASCII to UTF-8.
494 It is still ASCII now, but commentary about the switch has been added.
495 The new file 'zone1970.tab' already uses UTF-8.
496
497 Changes affecting code
498
499 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE
500 is defined. (Thanks to Elliott Hughes for reporting the problem.)
501
502 'zic' no longer mishandles input when ignoring case in locales that
503 are not compatible with English, e.g., unibyte Turkish locales when
504 compiled with HAVE_GETTEXT.
505
506 Error diagnostics of 'zic' and 'yearistype' have been reworded so that
507 they no longer use ASCII '-' as if it were a dash.
508
509 'zic' now rejects output file names that contain '.' or '..' components.
510 (Thanks to Tim Parenti for reporting the problem.)
511
512 'zic -v' now warns about output file names that do not follow
513 POSIX rules, or that contain a digit or '.'. (Thanks to Arthur
514 David Olson for starting the ball rolling on this.)
515
516 Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0.
517
518 Changes affecting build procedure
519
520 'zic' no longer links in localtime.o and asctime.o, as they're not needed.
521 (Thanks to John Cochran.)
522
523 Changes affecting documentation and commentary
524
525 The 'Theory' file documents legacy names, the longstanding
526 exceptions to the POSIX-inspired file name rules.
527
528 The 'zic' documentation clarifies the role of time types when
529 interpreting dates. (Thanks to Arthur David Olson.)
530
531 Documentation and commentary now prefer UTF-8 to US-ASCII,
532 allowing the use of proper accents in foreign words and names.
533 Code and data have not changed because of this. (Thanks to
534 Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug
535 this.)
536
537 Non-HTML documentation and commentary now use plain-text URLs instead of
538 HTML insertions, and are more consistent about bracketing URLs when they
539 are not already surrounded by white space. (Thanks to suggestions by
540 Steffen Nurpmeso.)
541
542 There is new commentary about Xujiahui Observatory, the five time-zone
543 project in China from 1918 to 1949, timekeeping in Japanese-occupied
544 Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the
545 warlord Jin Shuren in the data.
546
547 Commentary about the coverage of each Russian zone has been standardized.
548 (Thanks to Tim Parenti).
549
550 There is new commentary about contemporary timekeeping in Ethiopia.
551
552 Obsolete comments about a 2007 proposal for DST in Kuwait has been removed.
553
554 There is new commentary about time in Poland in 1919.
555
556 Proper credit has been given to DST inventor George Vernon Hudson.
557
558 Commentary about time in Metlakatla, AK and Resolute, NU has been
559 improved, with a new source for the former.
560
561 In zone.tab, Pacific/Easter no longer mentions Salas y Gómez, as it
562 is uninhabited.
563
564 Commentary about permanent Antarctic bases has been updated.
565
566 Several typos have been corrected. (Thanks to Tim Parenti for
567 contributing some of these fixes.)
568
569 tz-link.htm now mentions the JavaScript libraries Moment Timezone,
570 TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up
571 from Matt Johnson.) Also, it mentions the Go 'latlong' package.
572 (Thanks to a heads-up from Dirkjan Ochtman.)
573
574 The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998
575 have been removed. These obsolescent US Naval Observatory entries were no
576 longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.)
577
578
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579Release 2014e - 2014-06-12 21:53:52 -0700
580
581 Changes affecting near-future time stamps
582
583 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00.
584 (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily
585 switch to standard time at 24:00 the last Thursday before Ramadan, and
586 back to DST at 00:00 the first Friday after Ramadan.
587
588 Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks
589 to Milamber Space Network.) Guess that from 2015 on Morocco will
590 temporarily switch to standard time at 03:00 the last Saturday before
591 Ramadan, and back to DST at 02:00 the first Saturday after Ramadan.
592
593 Changes affecting past time stamps
594
595 The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of
596 "MSD" for Moscow's double daylight time in summer 1921. Also, a typo
597 "VLASST" has been repaired to be "VLAST" for Vladivostok summer time
598 in 1991. (Thanks to Hank W. for reporting the problems.)
599
600 Changes affecting commentary
601
602 tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the
603 draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and
604 removes stale pointers to World Time Explorer and WORLDTIME.
605
606
607Release 2014d - 2014-05-27 21:34:40 -0700
608
609 Changes affecting code
610
611 zic no longer generates files containing time stamps before the Big Bang.
612 This works around GNOME bug 730332
613 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>.
614 (Thanks to Leonardo Chiquitto for reporting the bug, and to
615 Arthur David Olson and James Cloos for suggesting improvements to the fix.)
616
617 Changes affecting documentation
618
619 tz-link.htm now mentions GNOME.
620
39560a18 621
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622Release 2014c - 2014-05-13 07:44:13 -0700
623
624 Changes affecting near-future time stamps
625
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626 Egypt observes DST starting 2014-05-15 at 24:00.
627 (Thanks to Ahmad El-Dardiry and Gunther Vermier.)
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628 Details have not been announced, except that DST will not be observed
629 during Ramadan. Guess that DST will stop during the same Ramadan dates as
630 Morocco, and that Egypt's future spring and fall transitions will be the
631 same as 2010 when it last observed DST, namely April's last Friday at
632 00:00 to September's last Thursday at 23:00 standard time. Also, guess
633 that Ramadan transitions will be at 00:00 standard time.
634
635 Changes affecting code
636
637 zic now generates transitions for minimum time values, eliminating guesswork
638 when handling low-valued time stamps. (Thanks to Arthur David Olson.)
639
640 Port to Cygwin sans glibc. (Thanks to Arthur David Olson.)
641
642 Changes affecting commentary and documentation
643
644 Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.)
645
646
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647Release 2014b - 2014-03-24 21:28:50 -0700
648
649 Changes affecting near-future time stamps
650
651 Crimea switches to Moscow time on 2014-03-30 at 02:00 local time.
652 (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU.
653
654 New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and
655 Bengt-Inge Larsson.) This is currently an approximation; a better version
656 will require the zic and localtime fixes mentioned below, and the plan is
657 to wait for a while until at least the zic fixes propagate.
658
659 Changes affecting code
660
661 'zic' and 'localtime' no longer reject locations needing four transitions
48afb8ac 662 per year for the foreseeable future. (Thanks to Andrew Main (Zefram).)
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663 Also, 'zic' avoids some unlikely failures due to integer overflow.
664
665 Changes affecting build procedure
666
667 'make check' now detects Rule lines defined but never used.
668 The NZAQ rules, an instance of this problem, have been removed.
669
670 Changes affecting commentary and documentation
671
672 Fix Tuesday/Thursday typo in description of time in Israel.
673 (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.)
674
675 Microsoft Windows 8.1 doesn't support tz database names. (Thanks
676 to Donald MacQueen.) Instead, the Microsoft Windows Store app
677 library supports them.
678
679 Add comments about Johnston Island time in the 1960s.
680 (Thanks to Lyle McElhaney.)
681
682 Morocco's 2014 DST start will be as predicted.
683 (Thanks to Sebastien Willemijns.)
684
685
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686Release 2014a - 2014-03-07 23:30:29 -0800
687
688 Changes affecting near-future time stamps
689
690 Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for
691 the heads-up, and to Tim Parenti for simplifying the update.)
692
693 Changes affecting past time stamps
694
695 Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00.
696 (Thanks to Steffen Thorsen.)
697
698 Ukraine switched from Moscow to Eastern European time on 1990-07-01
699 (not 1992-01-01), and observed DST during the entire next winter.
700 (Thanks to Vladimir in Moscow via Alois Treindl.)
701
702 In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03.
703 (Thanks to Avigdor Finkelstein.)
704
705 Changes affecting code
706
707 A uninitialized-storage bug in 'localtime' has been fixed.
708 (Thanks to Logan Chien.)
709
710 Changes affecting the build procedure
711
712 The settings for 'make check_web' now default to Ubuntu 13.10.
713
714 Changes affecting commentary and documentation
715
716 The boundary of the US Pacific time zone is given more accurately.
717 (Thanks to Alan Mintz.)
718
48afb8ac 719 Chile's 2014 DST will be as predicted. (Thanks to José Miguel Garrido.)
39560a18 720
48afb8ac 721 Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Raúl Perasso.)
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722
723 Better descriptions of countries with same time zone history as
724 Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.)
725
726 Several changes affect tz-link.htm, the main web page.
727
728 Mention Time.is (thanks to Even Scharning) and WX-now (thanks to
729 David Braverman).
730
731 Mention xCal (Internet RFC 6321) and jCal.
732
4af135af 733 Microsoft has some support for tz database names.
39560a18 734
48afb8ac 735 CLDR data formats include both XML and JSON.
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736
737 Mention Maggiolo's map of solar vs standard time.
738 (Thanks to Arthur David Olson.)
739
740 Mention TZ4Net. (Thanks to Matt Johnson.)
741
742 Mention the timezone-olson Haskell package.
743
48afb8ac 744 Mention zeitverschiebung.net. (Thanks to Martin Jäger.)
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745
746 Remove moribund links to daylight-savings-time.info and to
747 Simple Timer + Clocks.
748
749 Update two links. (Thanks to Oscar van Vlijmen.)
750
751 Fix some formatting glitches, e.g., remove random newlines from
752 abbr elements' title attributes.
753
754
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755Release 2013i - 2013-12-17 07:25:23 -0800
756
757 Changes affecting near-future time stamps:
758
759 Jordan switches back to standard time at 00:00 on December 20, 2013.
760 The 2006-2011 transition schedule is planned to resume in 2014.
761 (Thanks to Steffen Thorsen.)
762
763 Changes affecting past time stamps:
764
765 In 2004, Cuba began DST on March 28, not April 4.
766 (Thanks to Steffen Thorsen.)
767
768 Changes affecting code
769
770 The compile-time flag NOSOLAR has been removed, as nowadays the
771 benefit of slightly shrinking runtime table size is outweighed by the
772 cost of disallowing potential future updates that exceed old limits.
773
774 Changes affecting documentation and commentary
775
776 The files solar87, solar88, and solar89 are no longer distributed.
48afb8ac 777 They were a negative experiment - that is, a demonstration that
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778 tz data can represent solar time only with some difficulty and error.
779 Their presence in the distribution caused confusion, as Riyadh
780 civil time was generally not solar time in those years.
781
782 tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.)
783
39560a18 784
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785Release 2013h - 2013-10-25 15:32:32 -0700
786
787 Changes affecting current and future time stamps:
788
789 Libya has switched its time zone back to UTC+2 without DST,
790 instead of UTC+1 with DST. (Thanks to Even Scharning.)
791
792 Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules.
793 (Thanks to Gwillim Law.)
794
795 Changes affecting future time stamps:
796
797 Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5
798 on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe.
799 (Thanks to Steffen Thorsen.)
800
801 Add entries for DST transitions in Morocco in the year 2038.
802 This avoids some year-2038 glitches introduced in 2013g.
803 (Thanks to Yoshito Umaoka for reporting the problem.)
804
805 Changes affecting API
806
807 The 'tzselect' command no longer requires the 'select' command,
808 and should now work with /bin/sh on more platforms. It also works
809 around a bug in BusyBox awk before version 1.21.0. (Thanks to
48afb8ac 810 Patrick 'P. J.' McDermott and Alan Barrett.)
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811
812 Changes affecting code
813
814 Fix localtime overflow bugs with 32-bit unsigned time_t.
815
816 zdump no longer assumes sscanf returns maximal values on overflow.
817
818 Changes affecting the build procedure
819
820 The builder can specify which programs to use, if any, instead of
821 'ar' and 'ranlib', and libtz.a is now built locally before being
822 installed. (Thanks to Michael Forney.)
823
824 A dependency typo in the 'zdump' rule has been fixed.
825 (Thanks to Andrew Paprocki.)
826
827 The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f'
828 work as specified by POSIX.2-1992 or later; this is portable nowadays.
829
830 'make clean' no longer removes 'leapseconds', since it's
831 host-independent and is part of the distribution.
832
833 The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed.
834
835 Changes affecting documentation and commentary
836
48afb8ac 837 tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol
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838 (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle).
839
840 Update URLs in tz-link page. Add URLs for Microsoft Windows, since
841 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no
842 longer maintained) and for old advisories. SOFA now does C.
843
844Release 2013g - 2013-09-30 21:08:26 -0700
845
846 Changes affecting current and near-future time stamps
847
848 Morocco now observes DST from the last Sunday in March to the last
849 Sunday in October, not April to September respectively. (Thanks
850 to Steffen Thorsen.)
851
852 Changes affecting 'zic'
853
854 'zic' now runs on platforms that lack both hard links and symlinks.
855 (Thanks to Theo Veenker for reporting the problem, for MinGW.)
856 Also, fix some bugs on platforms that lack hard links but have symlinks.
857
858 'zic -v' again warns that Asia/Tehran has no POSIX environment variable
859 to predict the far future, fixing a bug introduced in 2013e.
860
861 Changes affecting the build procedure
862
863 The 'leapseconds' file is again put into the tzdata tarball.
864 Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to
865 Matt Burgess and Ian Abbott.) The timestamps of these and other
866 dependent files in tarballs are adjusted more consistently.
867
868 Changes affecting documentation and commentary
869
870 The README file is now part of the data tarball as well as the code.
871 It now states that files are public domain unless otherwise specified.
872 (Thanks to Andrew Main (Zefram) for asking for clarifications.)
873 Its details about the 1989 release moved to a place of honor near
874 the end of NEWS.
875
876
877Release 2013f - 2013-09-24 23:37:36 -0700
878
879 Changes affecting near-future time stamps
880
881 Tocantins will very likely not observe DST starting this spring.
882 (Thanks to Steffen Thorsen.)
883
884 Jordan will likely stay at UTC+3 indefinitely, and will not fall
885 back this fall.
886
887 Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.)
888
889 Changes affecting API
890
891 The types of the global variables 'timezone' and 'altzone' (if present)
892 have been changed back to 'long'. This is required for 'timezone'
893 by POSIX, and for 'altzone' by common practice, e.g., Solaris 11.
894 These variables were originally 'long' in the tz code, but were
895 mistakenly changed to 'time_t' in 1987; nobody reported the
896 incompatibility until now. The difference matters on x32, where
897 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.)
898
899 Changes affecting the build procedure
900
901 Avoid long strings in leapseconds.awk to work around a mawk bug.
902 (Thanks to Cyril Baurand.)
903
904 Changes affecting documentation and commentary
905
906 New file 'NEWS' that contains release notes like this one.
907
908 Paraguay's law does not specify DST transition time; 00:00 is customary.
909 (Thanks to Waldemar Villamayor-Venialbo.)
910
911 Minor capitalization fixes.
912
913 Changes affecting version-control only
914
48afb8ac 915 The experimental GitHub repository now contains annotated and
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916 signed tags for recent releases, e.g., '2013e' for Release 2013e.
917 Releases are tagged starting with 2012e; earlier releases were
918 done differently, and tags would either not have a simple name or
919 not exactly match what was released.
920
921 'make set-timestamps' is now simpler and a bit more portable.
922
923
924Release 2013e - 2013-09-19 23:50:04 -0700
925
926 Changes affecting near-future time stamps
927
928 This year Fiji will start DST on October 27, not October 20.
929 (Thanks to David Wheeler for the heads-up.) For now, guess that
930 Fiji will continue to spring forward the Sunday before the fourth
931 Monday in October.
932
933 Changes affecting current and future time zone abbreviations
934
935 Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian
936 time zone abbreviations since 1932. (Thanks to George Ziegler,
937 Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and
938 Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura,
939 Asia/Makassar, and Asia/Pontianak.
940
941 Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but
942 daylight saving time) for San Luis, Argentina since 2009.
943
48afb8ac 944 Changes affecting Godthåb time stamps after 2037 if version mismatch
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945
946 Allow POSIX-like TZ strings where the transition time's hour can
947 range from -167 through 167, instead of the POSIX-required 0
948 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the
949 new Fiji rules. This is a more-compact way to represent
950 far-future time stamps for America/Godthab, America/Santiago,
951 Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem,
952 Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by
953 this change. (Derived from a suggestion by Arthur David Olson.)
954
955 Allow POSIX-like TZ strings where daylight saving time is in
956 effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western
957 Argentina Summer Time all year. This supports a more-compact way
958 to represent the 2013d data for America/Argentina/San_Luis.
959 Because of the change for San Luis noted above this change does not
960 affect the current data. (Thanks to Andrew Main (Zefram) for
961 suggestions that improved this change.)
962
963 Where these two TZ changes take effect, there is a minor extension
964 to the tz file format in that it allows new values for the
965 embedded TZ-format string, and the tz file format version number
966 has therefore been increased from 2 to 3 as a precaution.
967 Version-2-based client code should continue to work as before for
968 all time stamps before 2038. Existing version-2-based client code
969 (tzcode, GNU/Linux, Solaris) has been tested on version-3-format
970 files, and typically works in practice even for time stamps after
971 2037; the only known exception is America/Godthab.
972
973 Changes affecting time stamps before 1970
974
975 Pacific/Johnston is now a link to Pacific/Honolulu. This corrects
976 some errors before 1947.
977
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978 Some zones have been turned into links, when they differ from existing
979 zones only in older data entries that were likely invented or that
980 differ only in LMT or transitions from LMT. These changes affect
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981 only time stamps before 1943. The affected zones are:
982 Africa/Juba, America/Anguilla, America/Aruba, America/Dominica,
983 America/Grenada, America/Guadeloupe, America/Marigot,
984 America/Montserrat, America/St_Barthelemy, America/St_Kitts,
985 America/St_Lucia, America/St_Thomas, America/St_Vincent,
986 America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for
987 confirming that the old Europe/Vaduz zone was wrong and the new
988 link is better for WWII-era times.)
989
990 Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects
991 America/Cayman, America/Jamaica and America/Grand_Turk time stamps
992 from 1890 to 1912.
993
994 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46.
995 This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks
996 to Alois Treindl).
997
998 Change the date of the circa-1850 Zurich transition from 1849-09-12
999 to 1853-07-16, overriding Shanks with data from Messerli about
1000 postal and telegraph time in Switzerland.
1001
1002 Changes affecting time zone abbreviations before 1970
1003
1004 For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932,
1005 as Jakarta was called Batavia back then.
1006
1007 Changes affecting API
1008
1009 The 'zic' command now outputs a dummy transition when far-future
1010 data can't be summarized using a TZ string, and uses a 402-year
1011 window rather than a 400-year window. For the current data, this
1012 affects only the Asia/Tehran file. It does not affect any of the
1013 time stamps that this file represents, so zdump outputs the same
1014 information as before. (Thanks to Andrew Main (Zefram).)
1015
1016 The 'date' command has a new '-r' option, which lets you specify
1017 the integer time to display, a la FreeBSD.
1018
1019 The 'tzselect' command has two new options '-c' and '-n', which lets you
1020 select a zone based on latitude and longitude.
1021
1022 The 'zic' command's '-v' option now warns about constructs that
1023 require the new version-3 binary file format. (Thanks to Arthur
1024 David Olson for the suggestion.)
1025
1026 Support for floating-point time_t has been removed.
1027 It was always dicey, and POSIX no longer requires it.
1028 (Thanks to Eric Blake for suggesting to the POSIX committee to
1029 remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy
1030 Heninger, Arthur David Olson, and Alois Treindl, for reporting
1031 bugs and elucidating some of the corners of the old floating-point
1032 implementation.)
1033
1034 The signatures of 'offtime', 'timeoff', and 'gtime' have been
1035 changed back to the old practice of using 'long' to represent UT
1036 offsets. This had been inadvertently and mistakenly changed to
48afb8ac 1037 'int_fast32_t'. (Thanks to Christos Zoulas.)
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1038
1039 The code avoids undefined behavior on integer overflow in some
1040 more places, including gmtime, localtime, mktime and zdump.
1041
1042 Changes affecting the zdump utility
1043
1044 zdump now outputs "UT" when referring to Universal Time, not "UTC".
1045 "UTC" does not make sense for time stamps that predate the introduction
1046 of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen
1047 for clarifying UT vs UTC.)
1048
1049 Data changes affecting behavior of tzselect and similar programs
1050
1051 Country code BQ is now called the more-common name "Caribbean Netherlands"
1052 rather than the more-official "Bonaire, St Eustatius & Saba".
1053
1054 Remove from zone.tab the names America/Montreal, America/Shiprock,
1055 and Antarctica/South_Pole, as they are equivalent to existing
48afb8ac 1056 same-country-code zones for post-1970 time stamps. The data entries for
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1057 these names are unchanged, so the names continue to work as before.
1058
1059 Changes affecting code internals
1060
1061 zic -c now runs way faster on 64-bit hosts when given large numbers.
1062
1063 zic now uses vfprintf to avoid allocating and freeing some memory.
1064
1065 tzselect now computes the list of continents from the data,
1066 rather than have it hard-coded.
1067
1068 Minor changes pacify GCC 4.7.3 and GCC 4.8.1.
1069
1070 Changes affecting the build procedure
1071
1072 The 'leapseconds' file is now generated automatically from a
1073 new file 'leap-seconds.list', which is a copy of
1074 <ftp://time.nist.gov/pub/leap-seconds.list>.
1075 A new source file 'leapseconds.awk' implements this.
1076 The goal is simplification of the future maintenance of 'leapseconds'.
1077
1078 When building the 'posix' or 'right' subdirectories, if the
1079 subdirectory would be a copy of the default subdirectory, it is
1080 now made a symbolic link if that is supported. This saves about
1081 2 MB of file system space.
1082
1083 The links America/Shiprock and Antarctica/South_Pole have been
1084 moved to the 'backward' file. This affects only nondefault builds
1085 that omit 'backward'.
1086
1087 Changes affecting version-control only
1088
1089 .gitignore now ignores 'date'.
1090
1091 Changes affecting documentation and commentary
1092
1093 Changes to the 'tzfile' man page
1094
1095 It now mentions that the binary file format may be extended in
1096 future versions by appending data.
1097
1098 It now refers to the 'zdump' and 'zic' man pages.
1099
1100 Changes to the 'zic' man page
1101
1102 It lists conditions that elicit a warning with '-v'.
1103
1104 It says that the behavior is unspecified when duplicate names
1105 are given, or if the source of one link is the target of another.
1106
1107 Its examples are updated to match the latest data.
1108
1109 The definition of white space has been clarified slightly.
1110 (Thanks to Michael Deckers.)
1111
1112 Changes to the 'Theory' file
1113
1114 There is a new section about the accuracy of the tz database,
1115 describing the many ways that errors can creep in, and
1116 explaining why so many of the pre-1970 time stamps are wrong or
1117 misleading (thanks to Steve Allen, Lester Caine, and Garrett
1118 Wollman for discussions that contributed to this).
1119
1120 The 'Theory' file describes LMT better (this follows a
1121 suggestion by Guy Harris).
1122
1123 It refers to the 2013 edition of POSIX rather than the 2004 edition.
1124
1125 It's mentioned that excluding 'backward' should not affect the
1126 other data, and it suggests at least one zone.tab name per
1127 inhabited country (thanks to Stephen Colebourne).
1128
1129 Some longstanding restrictions on names are documented, e.g.,
1130 'America/New_York' precludes 'America/New_York/Bronx'.
1131
1132 It gives more reasons for the 1970 cutoff.
1133
1134 It now mentions which time_t variants are supported, such as
1135 signed integer time_t. (Thanks to Paul Goyette for reporting
1136 typos in an experimental version of this change.)
1137
1138 (Thanks to Philip Newton for correcting typos in these changes.)
1139
1140 Documentation and commentary is more careful to distinguish UT in
1141 general from UTC in particular. (Thanks to Steve Allen.)
1142
1143 Add a better source for the Zurich 1894 transition.
1144 (Thanks to Pierre-Yves Berger.)
1145
1146 Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.)
1147
1148
1149Release 2013d - 2013-07-05 07:38:01 -0700
1150
1151 Changes affecting future time stamps:
1152
1153 Morocco's midsummer transitions this year are July 7 and August 10,
1154 not July 9 and August 8. (Thanks to Andrew Paprocki.)
1155
1156 Israel now falls back on the last Sunday of October.
1157 (Thanks to Ephraim Silverberg.)
1158
1159 Changes affecting past time stamps:
1160
1161 Specify Jerusalem's location more precisely; this changes the pre-1880
1162 times by 2 s.
1163
1164 Changing affecting metadata only:
1165
1166 Fix typos in the entries for country codes BQ and SX.
1167
1168 Changes affecting code:
1169
1170 Rework the code to fix a bug with handling Australia/Macquarie on
1171 32-bit hosts (thanks to Arthur David Olson).
1172
1173 Port to platforms like NetBSD, where time_t can be wider than long.
1174
1175 Add support for testing time_t types other than the system's.
1176 Run 'make check_time_t_alternatives' to try this out.
1177 Currently, the tests fail for unsigned time_t;
1178 this should get fixed at some point.
1179
1180 Changes affecting documentation and commentary:
1181
1182 Deemphasize the significance of national borders.
1183
1184 Update the zdump man page.
1185
1186 Remove obsolete NOID comment (thanks to Denis Excoffier).
1187
1188 Update several URLs and comments in the web pages.
1189
1190 Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler).
1191
1192 Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka).
1193
1194
1195Release 2013c - 2013-04-19 16:17:40 -0700
1196
1197 Changes affecting current and future time stamps:
1198
1199 Palestine observed DST starting March 29, 2013. (Thanks to
1200 Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST,
1201 with the predicted rules being the last Thursday in March at 24:00
1202 to the first Friday on or after September 21 at 01:00.
1203
1204 Assume that the recent change to Paraguay's DST rules is permanent,
1205 by moving the end of DST to the 4th Sunday in March every year.
48afb8ac 1206 (Thanks to Carlos Raúl Perasso.)
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1207
1208 Changes affecting past time stamps:
1209
1210 Fix some historical data for Palestine to agree with that of
1211 timeanddate.com, as follows:
1212
1213 The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not
1214 00:00 Apr 1.
1215
1216 The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not
1217 02:00.
1218
1219 The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27.
1220
1221 The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2.
1222
1223 The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01.
1224
1225 The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00.
1226
1227 Fix times of habitation for Macquarie to agree with the Tasmania
1228 Parks & Wildlife Service history, which indicates that permanent
1229 habitation was 1899-1919 and 1948 on.
1230
1231 Changing affecting metadata only:
1232
1233 Macquarie Island is politically part of Australia, not Antarctica.
1234 (Thanks to Tobias Conradi.)
1235
1236 Sort Macquarie more-consistently with other parts of Australia.
1237 (Thanks to Tim Parenti.)
1238
1239
1240Release 2013b - 2013-03-10 22:33:40 -0700
1241
1242 Changes affecting current and future time stamps:
1243
1244 Haiti uses US daylight-saving rules this year, and presumably future years.
1245 This changes time stamps starting today. (Thanks to Steffen Thorsen.)
1246
1247 Paraguay will end DST on March 24 this year.
1248 (Thanks to Steffen Thorsen.) For now, assume it's just this year.
1249
1250 Morocco does not observe DST during Ramadan;
1251 try to predict Ramadan in Morocco as best we can.
1252 (Thanks to Erik Homoet for the heads-up.)
1253
1254 Changes affecting commentary:
1255
1256 Update URLs in tz-link page. Add URLs for webOS, BB10, iOS.
1257 Update URL for Solaris. Mention Internet RFC 6557.
1258 Update Internet RFCs 2445->5545, 2822->5322.
1259 Switch from FTP to HTTP for Internet RFCs.
1260
1261
1262Release 2013a - 2013-02-27 09:20:35 -0800
1263
1264 Change affecting binary data format:
1265
1266 The zone offset at the end of version-2-format zone files is now
48afb8ac 1267 allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.)
44c07d40
SW
1268
1269 Changes affecting current and future time stamps:
1270
1271 Chile's 2013 rules, and we guess rules for 2014 and later, will be
1272 the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC.
1273 (Thanks to Steffen Thorsen and Robert Elz.)
1274
1275 New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen.
1276 (Thanks to Tobias Conradi and Arthur David Olson.)
1277
1278 Many changes affect historical time stamps before 1940.
1279 These were deduced from: Milne J. Civil time. Geogr J. 1899
1280 Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>.
1281
1282 Changes affecting the code:
1283
1284 Fix zic bug that mishandled Egypt's 2010 changes (this also affected
1285 the data). (Thanks to Arthur David Olson.)
1286
1287 Fix localtime bug when time_t is unsigned and data files were generated
1288 by a signed time_t system. (Thanks to Doug Bailey for reporting and
1289 to Arthur David Olson for fixing.)
1290
1291 Allow the email address for bug reports to be set by the packager.
1292 The default is tz@iana.org, as before. (Thanks to Joseph S. Myers.)
1293
1294 Update HTML checking to be compatible with Ubuntu 12.10.
1295
1296 Check that files are a safe subset of ASCII. At some point we may
1297 relax this requirement to a safe subset of UTF-8. Without the
1298 check, some non-UTF-8 encodings were leaking into the distribution.
1299
1300 Commentary changes:
1301
1302 Restore a comment about copyright notices that was inadvertently deleted.
1303 (Thanks to Arthur David Olson.)
1304
1305 Improve the commentary about which districts observe what times
1306 in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson).
1307
1308 Add web page links to tz.js.
1309
1310 Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.)
1311
1312
1313Release 2012j - 2012-11-12 18:34:49 -0800
1314
1315 Libya moved to CET this weekend, but with DST planned next year.
1316 (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.)
1317
1318 Signatures now have the extension .asc, not .sign, as that's more
1319 standard. (Thanks to Phil Pennock.)
1320
1321 The output of 'zdump --version', and of 'zic --version', now
1322 uses a format that is more typical for --version.
1323 (Thanks to Joseph S. Myers.)
1324
1325 The output of 'tzselect --help', 'zdump --help', and 'zic --help'
1326 now uses tz@iana.org rather than the old elsie address.
1327
1328 zic -v now complains about abbreviations that are less than 3
1329 or more than 6 characters, as per Posix. Formerly, it checked
1330 for abbreviations that were more than 3.
1331
1332 'make public' no longer puts its temporary directory under /tmp,
1333 and uses the just-built zic rather than the system zic.
1334
1335 Various fixes to documentation and commentary.
1336
1337
1338Release 2012i - 2012-11-03 12:57:09 -0700
1339
1340 Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.)
1341
1342 Linker flags can now be specified via LDFLAGS.
1343 AWK now defaults to 'awk', not 'nawk'.
1344 The shell in tzselect now defaults to /bin/bash, but this can
1345 be overridden by specifying KSHELL.
48afb8ac 1346 The main web page now mentions the unofficial GitHub repository.
44c07d40
SW
1347 (Thanks to Mike Frysinger.)
1348
1349 Tarball signatures can now be built by running 'make signatures'.
1350 There are also new makefile rules 'tarballs', 'check_public', and
1351 separate makefile rules for each tarball and signature file.
1352 A few makefile rules are now more portable to strict POSIX.
1353
1354 The main web page now lists the canonical IANA URL.
1355
1356
1357Release 2012h - 2012-10-26 22:49:10 -0700
1358
1359 Bahia no longer has DST. (Thanks to Kelley Cook.)
1360
1361 Tocantins has DST. (Thanks to Rodrigo Severo.)
1362
1363 Israel has new DST rules next year. (Thanks to Ephraim Silverberg.)
1364
1365 Jordan stays on DST this winter. (Thanks to Steffen Thorsen.)
1366
1367 Web page updates.
1368
1369 More C modernization, except that at Arthur David Olson's suggestion
1370 the instances of 'register' were kept.
1371
1372
1373Release 2012g - 2012-10-17 20:59:45 -0700
1374
1375 Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.)
1376
1377 Palestine fall 2012. (Thanks to Steffen Thorsen.)
1378
1379 Assume C89.
1380
1381 To attack the version-number problem, this release ships the file
1382 'Makefile' (which contains the release number) in both the tzcode and
1383 the tzdata tarballs. The two Makefiles are identical, and should be
1384 identical in any matching pair of tarballs, so it shouldn't matter
1385 which order you extract the tarballs. Perhaps we can come up with a
1386 better version-number scheme at some point; this scheme does have the
1387 virtue of not adding more files.
1388
1389
1390Release 2012f - 2012-09-12 23:17:03 -0700
1391
1392 * australasia (Pacific/Fiji): Fiji DST is October 21 through January
1393 20 this year. (Thanks to Steffen Thorsen.)
1394
1395
1396Release 2012e - 2012-08-02 20:44:55 -0700
1397
1398 * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14.
1399 (Thanks to Steffen Thorsen.)
1400
1401 * Use a single version number for both code and data.
1402
1403 * .gitignore: New file.
1404
1405 * Remove trailing white space.
1406
1407
1408Release code2012c-data2012d - 2012-07-19 16:35:33 -0700
1409
1410 Changes for Morocco's time stamps, which take effect in a couple of
1411 hours, along with infrastructure changes to accommodate how the tz
1412 code and data are released on IANA.
1413
1414
1415Release data2012c - 2012-03-27 12:17:25 -0400
1416
1417 africa
1418 Summer time changes for Morocco (to start late April 2012)
1419
1420 asia
1421 Changes for 2012 for Gaza & the West Bank (Hebron) and Syria
1422
1423 northamerica
1424 Haiti following US/Canada rules for 2012 (and we're assuming,
1425 for now anyway, for the future).
1426
1427
1428Release 2012b - 2012-03-02 12:29:15 +0700
1429
1430 There is just one change to tzcode2012b (compared with 2012a):
1431 the Makefile that was accidentally included with 2012a has been
1432 replaced with the version that should have been there, which is
1433 identical with the previous version (from tzcode2011i).
1434
1435 There are just two changes in tzdata2012b compared with 2012a.
1436
1437 Most significantly, summer time in Cuba has been delayed 3 weeks
1438 (now starts April 1 rather than March 11). Since Mar 11 (the old start
1439 date, as listed in 2012a) is just a little over a week away, this
1440 change is urgent.
1441
1442 Less importantly, an excess tab in one of the changes in zone.tab
1443 in 2012a has been removed.
1444
1445
1446Release 2012a - 2012-03-01 18:28:10 +0700
1447
1448 The changes in tzcode2012a (compared to the previous version, 2011i)
1449 are entirely to the README and tz-art.htm and tz-link.htm files, if
1450 none of those concern you, you can ignore the code update. The changes
1451 reflect the changed addresses for the mailing list and the code and
1452 data distribution points & methods (and a link to DateTime::TimeZone::Tzfile
1453 has been added to tz-link.htm).
1454
1455 In tzdata2012a (compared to the previous release, which was 2011n)
1456 the major changes are:
1457 Chile 2011/2012 and 2012/2013 summer time date adjustments.
1458 Falkland Islands onto permanent summer time (we're assuming for the
1459 foreseeable future, though 2012 is all we're fairly certain of.)
1460 Armenia has abolished Summer Time.
1461 Tokelau jumped the International Date Line back last December
1462 (just the same as their near neighbour, Samoa).
1463 America/Creston is a new zone for a small area of British Columbia
1464 There will be a leapsecond 2012-06-30 23:59:60 UTC.
1465
1466 Other minor changes are:
1467 Corrections to 1918 Canadian summer time end dates.
48afb8ac 1468 Updated URL for UK time zone history (in comments)
44c07d40
SW
1469 A few typos in Le Corre's list of free French place names (comments)
1470
1471
1472Release data2011n - 2011-10-30 14:57:54 +0700
1473
1474 There are three changes of note - most urgently, Cuba (America/Havana)
1475 has extended summer time by two weeks, now to end on Nov 13, rather than
1476 the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic
1477 (Europe/Tiraspol) decided not to split from the rest of Moldova after
1478 all, and consequently that zone has been removed (again) and reinstated
1479 in the "backward" file as a link to Europe/Chisinau. And third, the
1480 end date for Fiji's summer time this summer was moved forward from the
1481 earlier planned Feb 26, to Jan 22.
1482
1483 Apart from that, Moldova (MD) returns to a single entry in zone.tab
1484 (and the incorrect syntax that was in the 2011m version of that file
1485 is so fixed - it would have been fixed in a different way had this
1486 change not happened - that's the "missing" sccs version id).
1487
1488
1489Release data2011m - 2011-10-24 21:42:16 +0700
1490
1491 In particular, the typos in comments in the data (2011-11-17 should have
1492 been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that
1493 Tim Parenti noted) have been fixed, and the change for Ukraine has been
1494 made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to
1495 Tim Parenti, and also Denys Gavrysh)
1496
1497 In addition, I added Europe/Tiraspol to zone.tab.
1498
1499 This time, all the files have new version numbers... (including the files
1500 otherwise unchanged in 2011m that were changed in 2011l but didn't get new
1501 version numbers there...)
1502
1503
48afb8ac 1504Release data2011l - 2011-10-10 11:15:43 +0700
44c07d40
SW
1505
1506 There are just 2 changes that cause different generated tzdata files from
1507 zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil
1508 is included, but commented out. Compared with the diff I sent out last week,
1509 this version also includes attributions for the sources for the changes
1510 (in much the same format as ado used, but the html tags have not been
1511 checked, verified, or used in any way at all, so if there are errors there,
1512 please let me know.)
1513
1514
1515Release data2011k - 2011-09-20 17:54:03 -0400
1516
1517 [not summarized]
1518
1519
1520Release data2011j - 2011-09-12 09:22:49 -0400
1521
1522 (contemporary changes for Samoa; past changes for Kenya, Uganda, and
1523 Tanzania); there are also two spelling corrections to comments in
1524 the australasia file (with thanks to Christos Zoulas).
1525
1526
1527Release 2011i - 2011-08-29 05:56:32 -0400
1528
1529 [not summarized]
1530
1531
1532Release data2011h - 2011-06-15 18:41:48 -0400
1533
48afb8ac 1534 Russia and Curaçao changes
44c07d40
SW
1535
1536
1537Release 2011g - 2011-04-25 09:07:22 -0400
1538
1539 update the rules for Egypt to reflect its abandonment of DST this year
1540
1541
1542Release 2011f - 2011-04-06 17:14:53 -0400
1543
1544 [not summarized]
1545
1546
1547Release 2011e - 2011-03-31 16:04:38 -0400
1548
1549 Morocco, Chile, and tz-link changes
1550
1551
1552Release 2011d - 2011-03-14 09:18:01 -0400
1553
1554 changes that impact present-day time stamps in Cuba, Samoa, and Turkey
1555
1556
1557Release 2011c - 2011-03-07 09:30:09 -0500
1558
1559 These do affect current time stamps in Chile and Annette Island, Canada.
1560
1561
1562Release 2011b - 2011-02-07 08:44:50 -0500
1563
1564 [not summarized]
1565
1566
1567Release 2011a - 2011-01-24 10:30:16 -0500
1568
1569 [not summarized]
1570
1571
1572Release data2010o - 2010-11-01 09:18:23 -0400
1573
1574 change to the end of DST in Fiji in 2011
1575
1576
1577Release 2010n - 2010-10-25 08:19:17 -0400
1578
1579 [not summarized]
1580
1581
1582Release 2010m - 2010-09-27 09:24:48 -0400
1583
1584 Hong Kong, Vostok, and zic.c changes
1585
1586
1587Release 2010l - 2010-08-16 06:57:25 -0400
1588
1589 [not summarized]
1590
1591
1592Release 2010k - 2010-07-26 10:42:27 -0400
1593
1594 [not summarized]
1595
1596
1597Release 2010j - 2010-05-10 09:07:48 -0400
1598
48afb8ac 1599 changes for Bahía de Banderas and for version naming
44c07d40
SW
1600
1601
1602Release data2010i - 2010-04-16 18:50:45 -0400
1603
1604 the end of DST in Morocco on 2010-08-08
1605
1606
1607Release data2010h - 2010-04-05 09:58:56 -0400
1608
1609 [not summarized]
1610
1611
1612Release data2010g - 2010-03-24 11:14:53 -0400
1613
1614 [not summarized]
1615
1616
1617Release 2010f - 2010-03-22 09:45:46 -0400
1618
1619 [not summarized]
1620
1621
1622Release data2010e - 2010-03-08 14:24:27 -0500
1623
1624 corrects the Dhaka bug found by Danvin Ruangchan
1625
1626
1627Release data2010d - 2010-03-06 07:26:01 -0500
1628
1629 [not summarized]
1630
1631
1632Release 2010c - 2010-03-01 09:20:58 -0500
1633
1634 changes including KRE's suggestion for earlier initialization of
1635 "goahead" and "goback" structure elements
1636
1637
1638Release code2010a - 2010-02-16 10:40:04 -0500
1639
1640 [not summarized]
1641
1642
1643Release data2010b - 2010-01-20 12:37:01 -0500
1644
1645 Mexico changes
1646
1647
1648Release data2010a - 2010-01-18 08:30:04 -0500
1649
1650 changes to Dhaka
1651
1652
1653Release data2009u - 2009-12-26 08:32:28 -0500
1654
1655 changes to DST in Bangladesh
1656
1657
1658Release 2009t - 2009-12-21 13:24:27 -0500
1659
1660 [not summarized]
1661
1662
1663Release data2009s - 2009-11-14 10:26:32 -0500
1664
1665 (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change
1666
1667
1668Release 2009r - 2009-11-09 10:10:31 -0500
1669
1670 "antarctica" and "tz-link.htm" changes
1671
1672
1673Release 2009q - 2009-11-02 09:12:40 -0500
1674
1675 with two corrections as reported by Eric Muller and Philip Newton
1676
1677
1678Release data2009p - 2009-10-23 15:05:27 -0400
1679
1680 Argentina (including San Luis) changes (with the correction from
1681 Mariano Absatz)
1682
1683
1684Release data2009o - 2009-10-14 16:49:38 -0400
1685
1686 Samoa (commentary only), Pakistan, and Bangladesh changes
1687
1688
1689Release data2009n - 2009-09-22 15:13:38 -0400
1690
1691 added commentary for Argentina and a change to the end of DST in
1692 2009 in Pakistan
1693
1694
1695Release data2009m - 2009-09-03 10:23:43 -0400
1696
1697 Samoa and Palestine changes
1698
1699
1700Release data2009l - 2009-08-14 09:13:07 -0400
1701
48afb8ac 1702 Samoa (comments only) and Egypt
44c07d40
SW
1703
1704
1705Release 2009k - 2009-07-20 09:46:08 -0400
1706
1707 [not summarized]
1708
1709
1710Release data2009j - 2009-06-15 06:43:59 -0400
1711
1712 Bangladesh change (with a short turnaround since the DST change is
1713 impending)
1714
1715
1716Release 2009i - 2009-06-08 09:21:22 -0400
1717
1718 updating for DST in Bangladesh this year
1719
1720
1721Release 2009h - 2009-05-26 09:19:14 -0400
1722
1723 [not summarized]
1724
1725
1726Release data2009g - 2009-04-20 16:34:07 -0400
1727
1728 Cairo
1729
1730
1731Release data2009f - 2009-04-10 11:00:52 -0400
1732
1733 correct DST in Pakistan
1734
1735
1736Release 2009e - 2009-04-06 09:08:11 -0400
1737
1738 [not summarized]
1739
1740
1741Release 2009d - 2009-03-23 09:38:12 -0400
1742
1743 Morocco, Tunisia, Argentina, and American Astronomical Society changes
1744
1745
1746Release data2009c - 2009-03-16 09:47:51 -0400
1747
1748 change to the start of Cuban DST
1749
1750
1751Release 2009b - 2009-02-09 11:15:22 -0500
1752
1753 [not summarized]
1754
1755
1756Release 2009a - 2009-01-21 10:09:39 -0500
1757
1758 [not summarized]
1759
1760
1761Release data2008i - 2008-10-21 12:10:25 -0400
1762
1763 southamerica and zone.tab files, with Argentina DST rule changes and
1764 United States zone reordering and recommenting
1765
1766
1767Release 2008h - 2008-10-13 07:33:56 -0400
1768
1769 [not summarized]
1770
1771
1772Release 2008g - 2008-10-06 09:03:18 -0400
1773
1774 Fix a broken HTML anchor and update Brazil's DST transitions;
1775 there's also a slight reordering of information in tz-art.htm.
1776
1777
1778Release data2008f - 2008-09-09 22:33:26 -0400
1779
1780 [not summarized]
1781
1782
1783Release 2008e - 2008-07-28 14:11:17 -0400
1784
48afb8ac 1785 changes by Arthur David Olson and Jesper Nørgaard Welen
44c07d40
SW
1786
1787
1788Release data2008d - 2008-07-07 09:51:38 -0400
1789
1790 changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo
1791
1792
1793Release data2008c - 2008-05-19 17:48:03 -0400
1794
1795 Pakistan, Morocco, and Mongolia
1796
1797
1798Release data2008b - 2008-03-24 08:30:59 -0400
1799
1800 including renaming Asia/Calcutta to Asia/Kolkata, with a backward
1801 link provided
1802
1803
1804Release 2008a - 2008-03-08 05:42:16 -0500
1805
1806 [not summarized]
1807
1808
1809Release 2007k - 2007-12-31 10:25:22 -0500
1810
1811 most importantly, changes to the "southamerica" file based on
1812 Argentina's readoption of daylight saving time
1813
1814
1815Release 2007j - 2007-12-03 09:51:01 -0500
1816
1817 1. eliminate the "P" (parameter) macro;
1818
1819 2. the "noncontroversial" changes circulated on the time zone
1820 mailing list (less the changes to "logwtmp.c");
1821
1822 3. eliminate "too many transition" errors when "min" is used in time
1823 zone rules;
1824
1825 4. changes by Paul Eggert (including updated information for Venezuela).
1826
1827
1828Release data2007i - 2007-10-30 10:28:11 -0400
1829
1830 changes for Cuba and Syria
1831
1832
1833Release 2007h - 2007-10-01 10:05:51 -0400
1834
1835 changes by Paul Eggert, as well as an updated link to the ICU
1836 project in tz-link.htm
1837
1838
1839Release 2007g - 2007-08-20 10:47:59 -0400
1840
1841 changes by Paul Eggert
1842
1843 The "leapseconds" file has been updated to incorporate the most
1844 recent International Earth Rotation and Reference Systems Service
1845 (IERS) bulletin.
1846
1847 There's an addition to tz-art.htm regarding the television show "Medium".
1848
1849
1850Release 2007f - 2007-05-07 10:46:46 -0400
1851
1852 changes by Paul Eggert (including Haiti, Turks and Caicos, and New
1853 Zealand)
1854
1855 changes to zic.c to allow hour values greater than 24 (along with
1856 Paul's improved time value overflow checking)
1857
1858
1859Release 2007e - 2007-04-02 10:11:52 -0400
1860
1861 Syria and Honduras changes by Paul Eggert
1862
1863 zic.c variable renaming changes by Arthur David Olson
1864
1865
1866Release 2007d - 2007-03-20 08:48:30 -0400
1867
1868 changes by Paul Eggert
1869
1870 the elimination of white space at the ends of lines
1871
1872
1873Release 2007c - 2007-02-26 09:09:37 -0500
1874
1875 changes by Paul Eggert
1876
1877
1878Release 2007b - 2007-02-12 09:34:20 -0500
1879
1880 Paul Eggert's proposed change to the quotation handling logic in zic.c.
1881
1882 changes to the commentary in "leapseconds" reflecting the IERS
1883 announcement that there is to be no positive leap second at the end
1884 of June 2007.
1885
1886
1887Release 2007a - 2007-01-08 12:28:29 -0500
1888
1889 changes by Paul Eggert
1890
1891 Derick Rethan's Asmara change
1892
1893 Oscar van Vlijmen's Easter Island local mean time change
1894
1895 symbolic link changes
1896
1897
1898Release 2006p - 2006-11-27 08:54:27 -0500
1899
1900 changes by Paul Eggert
1901
1902
1903Release 2006o - 2006-11-06 09:18:07 -0500
1904
1905 changes by Paul Eggert
1906
1907
1908Release 2006n - 2006-10-10 11:32:06 -0400
1909
1910 changes by Paul Eggert
1911
1912
1913Release 2006m - 2006-10-02 15:32:35 -0400
1914
1915 changes for Uruguay, Palestine, and Egypt by Paul Eggert
1916
1917 (minimalist) changes to zic.8 to clarify "until" information
1918
1919
1920Release data2006l - 2006-09-18 12:58:11 -0400
1921
1922 Paul's best-effort work on this coming weekend's Egypt time change
1923
1924
1925Release 2006k - 2006-08-28 12:19:09 -0400
1926
1927 changes by Paul Eggert
1928
1929
1930Release 2006j - 2006-08-21 09:56:32 -0400
1931
1932 changes by Paul Eggert
1933
1934
1935Release code2006i - 2006-08-07 12:30:55 -0400
1936
1937 localtime.c fixes
1938
1939 Ken Pizzini's conversion script
1940
1941
1942Release code2006h - 2006-07-24 09:19:37 -0400
1943
1944 adds public domain notices to four files
1945
1946 includes a fix for transition times being off by a second
1947
1948 adds a new recording to the "arts" file (information courtesy Colin Bowern)
1949
1950
1951Release 2006g - 2006-05-08 17:18:09 -0400
1952
1953 northamerica changes by Paul Eggert
1954
1955
1956Release 2006f - 2006-05-01 11:46:00 -0400
1957
1958 a missing version number problem is fixed (with thanks to Bradley
1959 White for catching the problem)
1960
1961
1962Release 2006d - 2006-04-17 14:33:43 -0400
1963
1964 changes by Paul Eggert
1965
1966 added new items to tz-arts.htm that were found by Paul
1967
1968
1969Release 2006c - 2006-04-03 10:09:32 -0400
1970
1971 two sets of data changes by Paul Eggert
1972
1973 a fencepost error fix in zic.c
1974
1975 changes to zic.c and the "europe" file to minimize differences
1976 between output produced by the old 32-bit zic and the new 64-bit
1977 version
1978
1979
1980Release 2006b - 2006-02-20 10:08:18 -0500
1981 [tz32code2006b + tz64code2006b + tzdata2006b]
1982
1983 64-bit code
1984
1985 All SCCS IDs were bumped to "8.1" for this release.
1986
1987
1988Release 2006a - 2006-01-30 08:59:31 -0500
1989
1990 changes by Paul Eggert (in particular, Indiana time zone moves)
1991
1992 an addition to the zic manual page to describe how special-case
1993 transitions are handled
1994
1995
1996Release 2005r - 2005-12-27 09:27:13 -0500
1997
1998 Canadian changes by Paul Eggert
1999
2000 They also add "<pre>" directives to time zone data files and reflect
2001 changes to warning message logic in "zdump.c" (but with calls to
2002 "gettext" kept unbundled at the suggestion of Ken Pizzini).
2003
2004
2005Release 2005q - 2005-12-13 09:17:09 -0500
2006
2007 Nothing earth-shaking here:
2008 1. Electronic mail addresses have been removed.
2009 2. Casts of the return value of exit have been removed.
2010 3. Casts of the argument of is.* macros have been added.
2011 4. Indentation in one section of zic.c has been fixed.
2012 5. References to dead URLs in the data files have been dealt with.
2013
2014
2015Release 2005p - 2005-12-05 10:30:53 -0500
2016
2017 "systemv", "tz-link.htm", and "zdump.c" changes
2018 (less the casts of arguments to the is* macros)
2019
2020
2021Release 2005o - 2005-11-28 10:55:26 -0500
2022
2023 Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert
2024
2025 zdump.c lint fixes by Arthur David Olson
2026
2027
2028Release 2005n - 2005-10-03 09:44:09 -0400
2029
48afb8ac 2030 changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan
44c07d40
SW
2031 et al. changes)
2032
2033
2034Release 2005m - 2005-08-29 12:15:40 -0400
2035
2036 changes by Paul Eggert (with a small tweak to the tz-art change)
2037
2038 a declaration of an unused variable has been removed from zdump.c
2039
2040
2041Release 2005l - 2005-08-22 12:06:39 -0400
2042
2043 changes by Paul Eggert
2044
2045 overflow/underflow checks by Arthur David Olson, minus changes to
2046 the "Theory" file about the pending addition of 64-bit data (I grow
2047 less confident of the changes being accepted with each passing day,
2048 and the changes no longer increase the data files nine-fold--there's
2049 less than a doubling in size by my local Sun's reckoning)
2050
2051
2052Release 2005k - 2005-07-14 14:14:24 -0400
2053
2054 The "leapseconds" file has been edited to reflect the recently
2055 announced leap second at the end of 2005.
2056
2057 I've also deleted electronic mail addresses from the files as an
2058 anti-spam measure.
2059
2060
2061Release 2005j - 2005-06-13 14:34:13 -0400
2062
2063 These reflect changes to limit the length of time zone abbreviations
2064 and the characters used in those abbreviations.
2065
2066 There are also changes to handle POSIX-style "quoted" time zone
2067 environment variables.
2068
2069 The changes were circulated on the time zone mailing list; the only
2070 change since then was the removal of a couple of minimum-length of
2071 abbreviation checks.
2072
2073
2074Release data2005i - 2005-04-21 15:04:16 -0400
2075
2076 changes (most importantly to Nicaragua and Haiti) by Paul Eggert
2077
2078
2079Release 2005h - 2005-04-04 11:24:47 -0400
2080
2081 changes by Paul Eggert
2082
2083 minor changes to Makefile and zdump.c to produce more useful output
2084 when doing a "make typecheck"
2085
2086
2087Release 2005g - 2005-03-14 10:11:21 -0500
2088
2089 changes by Paul Eggert (a change to current DST rules in Uruguay and
2090 an update to a link to time zone software)
2091
2092
2093Release 2005f - 2005-03-01 08:45:32 -0500
2094
2095 data and documentation changes by Paul Eggert
2096
2097
2098Release 2005e - 2005-02-10 15:59:44 -0500
2099
2100 [not summarized]
2101
2102
2103Release code2005d - 2005-01-31 09:21:47 -0500
2104
2105 make zic complain about links to links if the -v flag is used
2106
2107 have "make public" do more code checking
2108
2109 add an include to "localtime.c" for the benefit of gcc systems
2110
2111
2112Release 2005c - 2005-01-17 18:36:29 -0500
2113
2114 get better results when mktime runs on a system where time_t is double
2115
2116 changes to the data files (most importantly to Paraguay)
2117
2118
2119Release 2005b - 2005-01-10 09:19:54 -0500
2120
2121 Get localtime and gmtime working on systems with exotic time_t types.
2122
2123 Update the leap second commentary in the "leapseconds" file.
2124
2125
2126Release 2005a - 2005-01-01 13:13:44 -0500
2127
2128 [not summarized]
2129
2130
2131Release code2004i - 2004-12-14 13:42:58 -0500
2132
2133 Deal with systems where time_t is unsigned.
2134
2135
2136Release code2004h - 2004-12-07 11:40:18 -0500
2137
2138 64-bit-time_t changes
2139
2140
2141Release 2004g - 2004-11-02 09:06:01 -0500
2142
2143 update to Cuba (taking effect this weekend)
2144
2145 other changes by Paul Eggert
2146
2147 correction of the spelling of Oslo
2148
2149 changed versions of difftime.c and private.h
2150
2151
2152Release code2004f - 2004-10-21 10:25:22 -0400
2153
2154 Cope with wide-ranging tm_year values.
2155
2156
2157Release 2004e - 2004-10-11 14:47:21 -0400
2158
2159 Brazil/Argentina/Israel changes by Paul Eggert
2160
2161 changes to tz-link.htm by Paul
2162
2163 one small fix to Makefile
2164
2165
2166Release 2004d - 2004-09-22 08:27:29 -0400
2167
2168 Avoid overflow problems when TM_YEAR_BASE is added to an integer.
2169
2170
2171Release 2004c - 2004-08-11 12:06:26 -0400
2172
2173 asctime-related changes
2174
2175 (variants of) some of the documentation changes suggested by Paul Eggert
2176
2177
2178Release 2004b - 2004-07-19 14:33:35 -0400
2179
48afb8ac 2180 data changes by Paul Eggert - most importantly, updates for Argentina
44c07d40
SW
2181
2182
2183Release 2004a - 2004-05-27 12:00:47 -0400
2184
2185 changes by Paul Eggert
2186
2187 Handle DST transitions that occur at the end of a month in some
2188 years but at the start of the following month in other years.
2189
2190 Add a copy of the correspondence that's the basis for claims about
2191 DST in the Navajo Nation.
2192
2193
2194Release 2003e - 2003-12-15 09:36:47 -0500
2195
2196 changes by Arthur David Olson (primarily code changes)
2197
2198 changes by Paul Eggert (primarily data changes)
2199
2200 minor changes to "Makefile" and "northamerica" (in the latter case,
2201 optimization of the "Toronto" rules)
2202
2203
2204Release 2003d - 2003-10-06 09:34:44 -0400
2205
2206 changes by Paul Eggert
2207
2208
2209Release 2003c - 2003-09-16 10:47:05 -0400
2210
2211 Fix bad returns in zic.c's inleap function.
2212 Thanks to Bradley White for catching the problem!
2213
2214
2215Release 2003b - 2003-09-16 07:13:44 -0400
2216
2217 Add a "--version" option (and documentation) to the zic and zdump commands.
2218
2219 changes to overflow/underflow checking in zic
2220
2221 a localtime typo fix.
2222
2223 Update the leapseconds and tz-art.htm files.
2224
2225
2226Release 2003a - 2003-03-24 09:30:54 -0500
2227
2228 changes by Paul Eggert
2229
2230 a few additions and modifications to the tz-art.htm file
2231
2232
2233Release 2002d - 2002-10-15 13:12:42 -0400
2234
2235 changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab
2236
2237 There's also a new time zone quote in "tz-art.htm".
2238
2239
2240Release 2002c - 2002-04-04 11:55:20 -0500
2241
2242 changes by Paul Eggert
2243
2244 Change zic.c to avoid creating symlinks to files that don't exist.
2245
2246
2247Release 2002b - 2002-01-28 12:56:03 -0500
2248
2249 [These change notes are for Release 2002a, which was corrupted.
2250 2002b was a corrected version of 2002a.]
2251
2252 changes by Paul Eggert
2253
2254 Update the "leapseconds" file to note that there'll be no leap
2255 second at the end of June, 2002.
2256
2257 Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone.
2258
2259 Change to "difftime.c" to avoid sizeof problems.
2260
2261
2262Release 2001d - 2001-10-09 13:31:32 -0400
2263
2264 changes by Paul Eggert
2265
2266
2267Release 2001c - 2001-06-05 13:59:55 -0400
2268
2269 changes by Paul Eggert and Andrew Brown
2270
2271
2272Release 2001b - 2001-04-05 16:44:38 -0400
2273
2274 changes by Paul Eggert (modulo jnorgard's typo fix)
2275
48afb8ac 2276 tz-art.htm has been HTMLified.
44c07d40
SW
2277
2278
2279Release 2001a - 2001-03-13 12:57:44 -0500
2280
2281 changes by Paul Eggert
2282
2283 An addition to the "leapseconds" file: comments with the text of the
2284 latest IERS leap second notice.
2285
2286 Trailing white space has been removed from data file lines, and
2287 repeated spaces in "Rule Jordan" lines in the "asia" file have been
2288 converted to tabs.
2289
2290
2291Release 2000h - 2000-12-14 15:33:38 -0500
2292
2293 changes by Paul Eggert
2294
2295 one typo fix in the "art" file
2296
48afb8ac 2297 With providence, this is the last update of the millennium.
44c07d40
SW
2298
2299
2300Release 2000g - 2000-10-10 11:35:22 -0400
2301
2302 changes by Paul Eggert
2303
2304 correction of John Mackin's name submitted by Robert Elz
2305
2306 Garry Shandling's Daylight Saving Time joke (!?!) from the recent
2307 Emmy Awards broadcast.
2308
2309
2310Release 2000f - 2000-08-10 09:31:58 -0400
2311
2312 changes by Paul Eggert
2313
2314 Added information in "tz-art.htm" on a Seinfeld reference to DST.
2315
2316 Error checking and messages in the "yearistype" script have been
2317 improved.
2318
2319
2320Release 2000e - 2000-07-31 09:27:54 -0400
2321
2322 data changes by Paul Eggert
2323
2324 a change to the default value of the defined constant HAVE_STRERROR
2325
2326 the addition of a Dave Barry quote on DST to the tz-arts file
2327
2328
2329Release 2000d - 2000-04-20 15:43:04 -0400
2330
2331 changes to the documentation and code of strftime for C99 conformance
2332
2333 a bug fix for date.c
2334
2335 These are based on (though modified from) changes by Paul Eggert.
2336
2337
2338Release 2000c - 2000-03-04 10:31:43 -0500
2339
2340 changes by Paul Eggert
2341
2342
2343Release 2000b - 2000-02-21 12:16:29 -0500
2344
2345 changes by Paul Eggert and Joseph Myers
2346
2347 modest tweaks to the tz-art.htm and tz-link.htm files
2348
2349
2350Release 2000a - 2000-01-18 09:21:26 -0500
2351
2352 changes by Paul Eggert
2353
2354 The two hypertext documents have also been renamed.
2355
2356
2357Release code1999i-data1999j - 1999-11-15 18:43:22 -0500
2358
2359 Paul Eggert's changes
2360
2361 additions to the "zic" manual page and the "Arts.htm" file
2362
2363
2364Release code1999h-data1999i - 1999-11-08 14:55:21 -0500
2365
2366 [not summarized]
2367
2368
2369Release data1999h - 1999-10-07 03:50:29 -0400
2370
2371 changes by Paul Eggert to "europe" (most importantly, fixing
2372 Lithuania and Estonia)
2373
2374
2375Release 1999g - 1999-09-28 11:06:18 -0400
2376
2377 data changes by Paul Eggert (most importantly, the change for
2378 Lebanon that buys correctness for this coming Sunday)
2379
2380 The "code" file contains changes to "Makefile" and "checktab.awk" to
2381 allow better checking of time zone files before they are published.
2382
2383
2384Release 1999f - 1999-09-23 09:48:14 -0400
2385
2386 changes by Arthur David Olson and Paul Eggert
2387
2388
2389Release 1999e - 1999-08-17 15:20:54 -0400
2390
2391 changes circulated by Paul Eggert, although the change to handling
2392 of DST-specifying time zone names has been commented out for now
2393 (search for "XXX" in "localtime.c" for details). These files also
2394 do not make any changes to the start of DST in Brazil.
2395
2396 In addition to Paul's changes, there are updates to "Arts.htm" and
2397 cleanups of URLs.
2398
2399
2400Release 1999d - 1999-03-30 11:31:07 -0500
2401
2402 changes by Paul Eggert
2403
2404 The Makefile's "make public" rule has also been changed to do a test
2405 compile of each individual time zone data file (which should help
2406 avoid problems such as the one we had with Nicosia).
2407
2408
2409Release 1999c - 1999-03-25 09:47:47 -0500
2410
2411 changes by Paul Eggert, most importantly the change for Chile.
2412
2413
2414Release 1999b - 1999-02-01 17:51:44 -0500
2415
2416 changes by Paul Eggert
2417
2418 code changes (suggested by Mani Varadarajan, mani at be.com) for
2419 correct handling of symbolic links when building using a relative directory
2420
2421 code changes to generate correct messages for failed links
2422
2423 updates to the URLs in Arts.htm
2424
2425
2426Release 1999a - 1999-01-19 16:20:29 -0500
2427
2428 error message internationalizations and corrections in zic.c and
2429 zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz,
2430 to whom thanks!)
2431
2432
2433Release code1998h-data1998i - 1998-10-01 09:56:10 -0400
2434
2435 changes for Brazil, Chile, and Germany
2436
2437 support for use of "24:00" in the input files for the time zone compiler
2438
2439
2440Release code1998g-data1998h - 1998-09-24 10:50:28 -0400
2441
2442 changes by Paul Eggert
2443
2444 correction to a define in the "private.h" file
2445
2446
2447Release data1998g - 1998-08-11 03:28:35 -0000
2448 [tzdata1998g.tar.gz is missing!]
2449
2450 Lithuanian change provided by mgedmin at pub.osf.it
2451
2452 Move creation of the GMT link with Etc/GMT to "etcetera" (from
2453 "backward") to ensure that the GMT file is created even where folks
2454 don't want the "backward" links (as suggested by Paul Eggert).
2455
2456
2457Release data1998f - 1998-07-20 13:50:00 -0000
2458 [tzdata1998f.tar.gz is missing!]
2459
2460 Update the "leapseconds" file to include the newly-announced
2461 insertion at the end of 1998.
2462
2463
2464Release code1998f - 1998-06-01 10:18:31 -0400
2465
2466 addition to localtime.c by Guy Harris
2467
2468
2469Release 1998e - 1998-05-28 09:56:26 -0400
2470
2471 The Makefile is changed to produce zoneinfo-posix rather than
2472 zoneinfo/posix, and to produce zoneinfo-leaps rather than
2473 zoneinfo/right.
2474
2475 data changes by Paul Eggert
2476
2477 changes from Guy Harris to provide asctime_r and ctime_r
2478
2479 A usno1998 file (substantially identical to usno1997) has been added.
2480
2481
2482Release 1998d - 1998-05-14 11:58:34 -0400
2483
2484 changes to comments (in particular, elimination of references to CIA maps).
2485 "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places
2486 where changes occur.
2487
2488
2489Release 1998c - 1998-02-28 12:32:26 -0500
2490
2491 changes by Paul Eggert (save the "French correction," on which I'll
2492 wait for the dust to settle)
2493
2494 symlink changes
2495
2496 changes and additions to Arts.htm
2497
2498
2499Release 1998b - 1998-01-17 14:31:51 -0500
2500
2501 URL cleanups and additions
2502
2503
2504Release 1998a - 1998-01-13 12:37:35 -0500
2505
2506 changes by Paul Eggert
2507
2508
2509Release code1997i-data1997k - 1997-12-29 09:53:41 -0500
2510
2511 changes by Paul Eggert, with minor modifications from Arthur David
2512 Olson to make the files more browser friendly
2513
2514
2515Release code1997h-data1997j - 1997-12-18 17:47:35 -0500
2516
2517 minor changes to put "TZif" at the start of each time zone information file
2518
2519 a rule has also been added to the Makefile so you can
2520 make zones
2521 to just recompile the zone information files (rather than doing a
2522 full "make install" with its other effects).
2523
2524
2525Release data1997i - 1997-10-07 08:45:38 -0400
2526
2527 changes to Africa by Paul Eggert
2528
2529
2530Release code1997g-data1997h - 1997-09-04 16:56:54 -0400
2531
2532 corrections for Uruguay (and other locations)
2533
2534 Arthur David Olson's simple-minded fix allowing mktime to both
2535 correctly handle leap seconds and correctly handle tm_sec values
2536 upon which arithmetic has been performed.
2537
2538
2539Release code1997f-data1997g - 1997-07-19 13:15:02 -0400
2540
2541 Paul Eggert's updates
2542
2543 a small change to a function prototype;
2544
48afb8ac 2545 "Music" has been renamed "Arts.htm", HTMLified, and augmented to
44c07d40
SW
2546 include information on Around the World in Eighty Days.
2547
2548
2549Release code1997e-data1997f - 1997-05-03 18:52:34 -0400
2550
2551 fixes to zic's error handling
2552
2553 changes inspired by the item circulated on Slovenia
2554
48afb8ac 2555 The description of Web resources has been HTMLified for browsing
44c07d40
SW
2556 convenience.
2557
2558 A new piece of tz-related music has been added to the "Music" file.
2559
2560
2561Release code1997d-data1997e - 1997-03-29 12:48:52 -0500
2562
2563 Paul Eggert's latest suggestions
2564
2565
2566Release code1997c-data1997d - 1997-03-07 20:37:54 -0500
2567
2568 changes to "zic.c" to correct performance of the "-s" option
2569
2570 a new file "usno1997"
2571
2572
2573Release data1997c - 1997-03-04 09:58:18 -0500
2574
2575 changes in Israel
2576
2577
2578Release 1997b - 1997-02-27 18:34:19 -0500
2579
2580 The data file incorporates the 1997 leap second.
2581
2582 The code file incorporates Arthur David Olson's take on the
2583 zic/multiprocessor/directory-creation situation.
2584
2585
2586Release 1997a - 1997-01-21 09:11:10 -0500
2587
2588 Paul Eggert's Antarctica (and other changes)
2589
2590 Arthur David Olson finessed the "getopt" issue by checking against
2591 both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1
2592 is returned while SunOS 5.5's manual says EOF is returned).
2593
2594
2595Release code1996o-data1996n - 1996-12-27 21:42:05 -0500
2596
2597 Paul Eggert's latest changes
2598
2599
2600Release code1996n - 1996-12-16 09:42:02 -0500
2601
2602 link snapping fix from Bruce Evans (via Garrett Wollman)
2603
2604
2605Release data1996m - 1996-11-24 02:37:34 -0000
2606 [tzdata1996m.tar.gz is missing!]
2607
2608 Paul Eggert's batch of changes
2609
2610
2611Release code1996m-data1996l - 1996-11-05 14:00:12 -0500
2612
2613 No functional changes here; the files have simply been changed to
2614 make more use of ISO style dates in comments. The names of the above
2615 files now include the year in full.
2616
2617
2618Release code96l - 1996-09-08 17:12:20 -0400
2619
2620 tzcode96k was missing a couple of pieces.
2621
2622
2623Release 96k - 1996-09-08 16:06:22 -0400
2624
2625 the latest round of changes from Paul Eggert
2626
2627 the recent Year 2000 material
2628
2629
2630Release code96j - 1996-07-30 13:18:53 -0400
2631
2632 Set sp->typecnt as suggested by Timothy Patrick Murphy.
2633
2634
2635Release code96i - 1996-07-27 20:11:35 -0400
2636
2637 Paul's suggested patch for strftime %V week numbers
2638
2639
2640Release data96i - 1996-07-01 18:13:04 -0400
2641
2642 "northamerica" and "europe" changes by Paul Eggert
2643
2644
2645Release code96h - 1996-06-05 08:02:21 -0400
2646
2647 fix for handling transitions specified in Universal Time
2648
2649 Some "public domain" notices have also been added.
2650
2651
2652Release code96g - 1996-05-16 14:00:26 -0400
2653
2654 fix for the simultaneous-DST-and-zone-change challenge
2655
2656
48afb8ac 2657Release data96h - 1996-05-09 17:40:51 -0400
44c07d40
SW
2658
2659 changes by Paul Eggert
2660
2661
2662Release code96f-data96g - 1996-05-03 03:09:59 -0000
2663 [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!]
2664
2665 The changes get us some of the way to fixing the problems noted in Paul
2666 Eggert's letter yesterday (in addition to a few others). The approach
2667 has been to make zic a bit smarter about figuring out what time zone
2668 abbreviations apply just after the time specified in the "UNTIL" part
2669 of a zone line. Putting the smarts in zic means avoiding having
2670 transition times show up in both "Zone" lines and "Rule" lines, which
2671 in turn avoids multiple transition time entries in time zone files.
2672 (This also makes the zic input files such as "europe" a bit shorter and
2673 should ease maintenance.)
2674
2675
2676Release data96f - 1996-04-19 19:20:03 -0000
2677 [tzdata96f.tar.gz is missing!]
2678
2679 The only changes are to the "northamerica" file; the time zone
2680 abbreviation for Denver is corrected to MST (and MDT), and the
2681 comments for Mexico have been updated.
2682
2683
2684Release data96e - 1996-03-19 17:37:26 -0500
2685
2686 Proposals by Paul Eggert, in particular the Portugal change that
2687 comes into play at the end of this month.
2688
2689
2690Release data96d - 1996-03-18 20:49:39 -0500
2691
2692 [not summarized]
2693
2694
48afb8ac 2695Release code96e - 1996-02-29 15:43:27 -0000
44c07d40
SW
2696 [tzcode96e.tar.gz is missing!]
2697
2698 internationalization changes and the fix to the documentation for strftime
2699
2700
2701Release code96d-data96c - 1996-02-12 11:05:27 -0500
2702
2703 The "code" file simply updates Bob Kridle's electronic address.
2704
2705 The "data" file updates rules for Mexico.
2706
2707
2708Release data96b - 1996-01-27 15:44:42 -0500
2709
2710 Kiribati change
2711
2712
48afb8ac 2713Release code96c - 1996-01-16 16:58:15 -0500
44c07d40
SW
2714
2715 leap-year streamlining and binary-search changes
2716
2717 fix to newctime.3
2718
2719
2720Release code96b - 1996-01-10 20:42:39 -0500
2721
2722 fixes and enhancements from Paul Eggert, including code that
2723 emulates the behavior of recent versions of the SunOS "date"
2724 command.
2725
2726
2727Release 96a - 1996-01-06 09:08:24 -0500
2728
2729 Israel updates
2730
2731 fixes to strftime.c for correct ISO 8601 week number generation,
2732 plus support for two new formats ('G' and 'g') to give ISO 8601 year
2733 numbers (which are not necessarily the same as calendar year numbers)
2734
2735
2736Release code95i-data95m - 1995-12-21 12:46:47 -0500
2737
2738 The latest revisions from Paul Eggert are included, the usno1995
2739 file has been updated, and a new file ("WWW") covering useful URLs
2740 has been added.
2741
2742
2743Release code95h-data95l - 1995-12-19 18:10:12 -0500
2744
2745 A simplification of a macro definition, a change to data for Sudan,
2746 and (for last minute shoppers) notes in the "Music" file on the CD
2747 "Old Man Time".
2748
2749
2750Release code95g-data95k - 1995-10-30 10:32:47 -0500
2751
2752 (slightly reformatted) 8-bit-clean proposed patch
2753
2754 minor patch: US/Eastern -> America/New_York
2755
2756 snapshot of the USNO's latest data ("usno1995")
2757
2758 some other minor cleanups
2759
2760
2761Release code95f-data95j - 1995-10-28 21:01:34 -0000
2762 [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!]
2763
2764 European cleanups
2765
2766 support for 64-bit time_t's
2767
2768 optimization in localtime.c
2769
2770
2771Release code95e - 1995-10-13 13:23:57 -0400
2772
2773 the mktime change to scan from future to past when trying to find time zone
2774 offsets
2775
2776
2777Release data95i - 1995-09-26 10:43:26 -0400
2778
48afb8ac
SW
2779 For Canada/Central, guess that the Sun customer's "one week too
2780 early" was just a approximation, and the true error is one month
44c07d40
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2781 too early. This is consistent with the rest of Canada.
2782
2783
2784Release data95h - 1995-09-21 11:26:48 -0400
2785
2786 latest changes from Paul Eggert
2787
2788
2789Release code95d - 1995-09-14 11:14:45 -0400
2790
2791 the addition of a "Music" file, which documents four recorded
2792 versions of the tune "Save That Time".
2793
2794
2795Release data95g - 1995-09-01 17:21:36 -0400
2796
2797 "yearistype" correction
2798
2799
2800Release data95f - 1995-08-28 20:46:56 -0400
2801
2802 Paul Eggert's change to the australasia file
2803
2804
2805Release data95e - 1995-07-08 18:02:34 -0400
2806
2807 The only change is a leap second at the end of this year.
2808 Thanks to Bradley White for forwarding news on the leap second.
2809
2810
2811Release data95d - 1995-07-03 13:26:22 -0400
2812
2813 Paul Eggert's changes
2814
2815
2816Release data95c - 1995-07-02 19:19:28 -0400
2817
2818 changes to "asia", "backward", "europe", and "southamerica"
2819 (read: northamericacentrics need not apply)
2820
2821
2822Release code95c - 1995-03-13 14:00:46 -0500
2823
2824 one-line fix for sign extension problems in detzcode
2825
2826
2827Release 95b - 1995-03-04 11:22:38 -0500
2828
2829 Minor changes in both:
2830
2831 The "code" file contains a workaround for the lack of "unistd.h" in
2832 Microsoft C++ version 7.
2833
2834 The "data" file contains a fixed "Link" for America/Shiprock.
2835
2836
2837Release 94h - 1994-12-10 12:51:14 -0500
2838
2839 The files:
2840
2841 * incorporate the changes to "zdump" and "date" to make changes to
2842 the "TZ" environment variable permanent;
2843
2844 * incorporate the table changes by Paul Eggert;
2845
2846 * include (and document) support for universal time specifications in
48afb8ac 2847 data files - but do not (yet) include use of this feature in the
44c07d40
SW
2848 data files.
2849
48afb8ac
SW
2850 Think of this as "TZ Classic" - the software has been set up not to break if
2851 universal time shows up in its input, and data entries have been
2852 left as is so as not to break existing implementations.
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SW
2853
2854
2855Release data94f - 1994-08-20 12:56:09 -0400
2856
2857 (with thanks!) the latest data updates from Paul Eggert
2858
2859
2860Release data94e - 1994-06-04 13:13:53 -0400
2861
2862 [not summarized]
2863
2864
2865Release code94g - 1994-05-05 12:14:07 -0400
2866
2867 fix missing "optind.c" and a reference to it in the Makefile
2868
2869
2870Release code94f - 1994-05-05 13:00:33 -0000
2871 [tzcode94f.tar.gz is missing!]
2872
2873 changes to avoid overflow in difftime, as well as changes to cope
2874 with the 52/53 challenge in strftime
2875
2876
2877Release code94e - 1994-03-30 23:32:59 -0500
2878
2879 change for the benefit of PCTS
2880
2881
2882Release 94d - 1994-02-24 15:42:25 -0500
2883
2884 Avoid clashes with POSIX semantics for zones such as GMT+4.
2885
2886 Some other very minor housekeeping is also present.
2887
2888
2889Release code94c - 1994-02-10 08:52:40 -0500
2890
2891 Fix bug where mkdirs was broken unless you compile with
2892 -fwritable-strings (which is generally losing to do).
2893
2894
2895Release 94b - 1994-02-07 10:04:33 -0500
2896
2897 work by Paul Eggert who notes:
2898
2899 I found another book of time zone histories by E W Whitman; it's not
2900 as extensive as Shanks but has a few goodies of its own. I used it
2901 to update the tables. I also fixed some more as a result of
2902 correspondence with Adam David and Peter Ilieve, and move some stray
48afb8ac 2903 links from 'europe' to 'backward'. I corrected some scanning errors
44c07d40
SW
2904 in usno1989.
2905
2906 As far as the code goes, I fixed zic to allow years in the range
2907 INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900.
2908 And I cleaned up the zic documentation a little bit.
2909
2910
2911Release data94a - 1994-02-03 08:58:54 -0500
2912
2913 It simply incorporates the recently announced leap second into the
2914 "leapseconds" file.
2915
2916
2917Release 93g - 1993-11-22 17:28:27 -0500
2918
2919 Paul Eggert has provided a good deal of historic information (based
2920 on Shanks), and there are some code changes to deal with the buglets
2921 that crawled out in dealing with the new information.
2922
2923
2924Release 93f - 1993-10-15 12:27:46 -0400
2925
2926 Paul Eggert's changes
2927
2928
2929Release 93e - 1993-09-05 21:21:44 -0400
2930
48afb8ac 2931 This has updated data for Israel, England, and Kwajalein. There's
44c07d40
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2932 also an update to "zdump" to cope with Kwajalein's 24-hour jump.
2933 Thanks to Paul Eggert and Peter Ilieve for the changes.
2934
2935
2936Release 93d - 1993-06-17 23:34:17 -0400
2937
2938 new fix and new data on Israel
2939
2940
2941Release 93c - 1993-06-06 19:31:55 -0400
2942
2943 [not summarized]
2944
2945
2946Release 93b - 1993-02-02 14:53:58 -0500
2947
2948 updated "leapseconds" file
2949
2950
2951Release 93 - 1993-01-08 07:01:06 -0500
2952
48afb8ac 2953 At kre's suggestion, the package has been split in two - a code piece
44c07d40
SW
2954 (which also includes documentation) that's only of use to folks who
2955 want to recompile things and a data piece useful to anyone who can
2956 run "zic".
2957
2958 The new version has a few changes to the data files, a few
2959 portability changes, and an off-by-one fix (with thanks to
48afb8ac 2960 Tom Karzes at deshaw.com for providing a description and a
44c07d40
SW
2961 solution).
2962
2963
2964Release 92c - 1992-11-21 17:35:36 -0000
2965 [tz92c.tar.Z is missing!]
2966
2967 The fallout from the latest round of DST transitions.
2968
2969 There are changes for Portugal, Saskatchewan, and "Pacific-New";
2970 there's also a change to "zic.c" that makes it portable to more systems.
2971
2972
2973Release 92 - 1992-04-25 18:17:03 -0000
2974 [tz92.tar.Z is missing!]
2975
2976 By popular demand (well, at any rate, following a request by kre at munnari)
2977
2978
2979The 1989 update of the time zone package featured:
2980
2981 * POSIXization (including interpretation of POSIX-style TZ environment
2982 variables, provided by Guy Harris),
2983 * ANSIfication (including versions of "mktime" and "difftime"),
2984 * SVIDulation (an "altzone" variable)
2985 * MACHination (the "gtime" function)
2986 * corrections to some time zone data (including corrections to the rules
2987 for Great Britain and New Zealand)
2988 * reference data from the United States Naval Observatory for folks who
2989 want to do additional time zones
2990 * and the 1989 data for Saudi Arabia.
2991
2992 (Since this code will be treated as "part of the implementation" in some
2993 places and as "part of the application" in others, there's no good way to
2994 name functions, such as timegm, that are not part of the proposed ANSI C
2995 standard; such functions have kept their old, underscore-free names in this
2996 update.)
2997
2998 And the "dysize" function has disappeared; it was present to allow
2999 compilation of the "date" command on old BSD systems, and a version of "date"
3000 is now provided in the package. The "date" command is not created when you
3001 "make all" since it may lack options provided by the version distributed with
3002 your operating system, or may not interact with the system in the same way
3003 the native version does.
3004
3005 Since POSIX frowns on correct leap second handling, the default behavior of
3006 the "zic" command (in the absence of a "-L" option) has been changed to omit
3007 leap second information from its output files.
3008
3009
3010-----
3011Notes
3012
3013This file contains copies of the part of each release announcement
3014that talks about the changes in that release. The text has been
3015adapted and reformatted for the purposes of this file.
3016
3017Typically a release R consists of a pair of tarball files,
3018tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g.,
3019code2010a, data2012c) consist of just one or the other tarball, and a
3020few (e.g., code2012c-data2012d) have tarballs with mixed version
3021numbers.
3022
3023Release time stamps are taken from the release's commit (for newer,
3024git releases), from the newest file in the tarball (for older
3025releases, where this info is available) or from the email announcing
48afb8ac 3026the release (if all else fails; these are marked with a time zone of
44c07d40
SW
3027-0000 and an "is missing!" comment).
3028
3029Earlier versions of the code and data were not announced on the tz
3030list and are not summarized here.
3031
3032This file is in the public domain.
48afb8ac
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3033
3034Local Variables:
3035coding: utf-8
3036End: