- tz - lists.iana.org

question regarding 'timezone' variable
by Kees Dekker Sept. 2, 2015

Sept. 2, 2015

Hi, When USG_COMPAT is set, in localtime.c a long timezone (and int daylight) is declared. In strftime.c, also timezone is used, but no reference to 'extern long timezone' is define, neither do any of the provided header files. On most *NIX platforms, a system 'timezone' variable exists (see e.g. man tzset). My concerns are: a. The provided variable in localtime.c may conflict with the system one. b. The used variable in strftime.c may not related to the variable in localtime.c I think that compilers/linkers may complain about duplicate 'timezone' variables, or probably silently map the local timezone variable to the same one. Question: Is behavior intended? Or do I miss something? Regards, Kees

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Fiji DST 2015/16
by Ken Rylander Sept. 2, 2015

Sept. 2, 2015

Hi Paul, Some changes to the Fiji DST 2015/16 were communicated to us. See attached order from Fiji Government. There is nothing yet on their website, http://www.fiji.gov.fj, so I can't provide a link yet. The attached order states: "the daylight saving period is 1 hour in advance of the standard time commencing at 2.00 am on Sunday 1st November, 2015 and ending at 3.00 am on Sunday 17th January, 2016." Fiji rules in tzdata2015f: Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S Rule Fiji 2015 max - Jan Sun>=18 3:00 0 - I guess that means that the start of DST on Nov 1, will work fine. But the second rule need to be changed, so DST will on Jan 17, 2016. Regards, Ken Rylander | Solution Development and BI Manager - Digicel Pacific | Digicel (Fiji) Ltd | P.O.Box 13811, Suva, Fiji | Ground Floor, Kadavu House, Victoria Parade, Suva, Fiji | Mobile (679) 701 5353 | Fax (679) 334 3733 | ken.rylander(a)digicelgroup.com<mailto:ken.rylander@digicelgroup.com> | www.digicelpacific.com<http://www.digicelpacific.com/> ________________________________ Notice of Confidentiality: The information contained in this communication is intended solely for the use of the individual or entity to whom it is addressed and others authorized to receive it. It may contain confidential or legally privileged information. If you are not the intended recipient you are hereby notified that any disclosure, copying, distribution or taking any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by responding to this email and then delete it from your system.

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[PROPOSED PATCH] Fix localtime bug with Anchorage after 2037
by Paul Eggert Aug. 28, 2015

Aug. 28, 2015

* NEWS: Document this. * localtime.c (tzloadbody): Handle America/Anchorage after 2037, even though the sum of the abbreviations' sizes (42) plus the sum of the extended abbreviations' sizes (10) exceeds TZ_MAX_CHARS (50). Do this by reusing existing abbreviations. Thanks to Bradley White for reporting the bug. Perhaps we should also consider increasing TZ_MAX_CHARS from its currently-low value. --- NEWS | 8 +++++++ localtime.c | 71 +++++++++++++++++++++++++++++++++++++++---------------------- 2 files changed, 54 insertions(+), 25 deletions(-) diff --git a/NEWS b/NEWS index b477250..ffe3fb2 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,13 @@ News for the tz database +Unreleased, experimental changes + + Changes affecting code + + localtime no longer mishandles America/Anchorage after 2037. + (Thanks to Bradley White for reporting the bug.) + + Release 2015f - 2015-08-10 18:06:56 -0700 Changes affecting future time stamps diff --git a/localtime.c b/localtime.c index ded8f7b..ac34e5d 100644 --- a/localtime.c +++ b/localtime.c @@ -569,31 +569,52 @@ tzloadbody(char const *name, struct state *sp, bool doextend, up->buf[nread - 1] = '\0'; if (tzparse(&up->buf[1], ts, false) - && ts->typecnt == 2 - && sp->charcnt + ts->charcnt <= TZ_MAX_CHARS) { - for (i = 0; i < 2; ++i) - ts->ttis[i].tt_abbrind += - sp->charcnt; - for (i = 0; i < ts->charcnt; ++i) - sp->chars[sp->charcnt++] = - ts->chars[i]; - i = 0; - while (i < ts->timecnt && - ts->ats[i] <= - sp->ats[sp->timecnt - 1]) - ++i; - while (i < ts->timecnt && - sp->timecnt < TZ_MAX_TIMES) { - sp->ats[sp->timecnt] = - ts->ats[i]; - sp->types[sp->timecnt] = - sp->typecnt + - ts->types[i]; - ++sp->timecnt; - ++i; - } - sp->ttis[sp->typecnt++] = ts->ttis[0]; - sp->ttis[sp->typecnt++] = ts->ttis[1]; + && ts->typecnt == 2) { + + /* Attempt to reuse existing abbreviations. + Without this, America/Anchorage would stop + working after 2037 when TZ_MAX_CHARS is 50, as + sp->charcnt equals 42 (for LMT CAT CAWT CAPT AHST + AHDT YST AKDT AKST) and ts->charcnt equals 10 + (for AKST AKDT). Reusing means sp->charcnt can + stay 42 in this example. */ + int gotabbr = 0; + int charcnt = sp->charcnt; + for (i = 0; i < 2; i++) { + char *tsabbr = ts->chars + ts->ttis[i].tt_abbrind; + int j; + for (j = 0; j < charcnt; j++) + if (strcmp(sp->chars + j, tsabbr) == 0) { + ts->ttis[i].tt_abbrind = j; + gotabbr++; + break; + } + if (! (j < charcnt)) { + int tsabbrlen = strlen(tsabbr); + if (j + tsabbrlen < TZ_MAX_CHARS) { + strcpy(sp->chars + j, tsabbr); + charcnt = j + tsabbrlen + 1; + ts->ttis[i].tt_abbrind = j; + gotabbr++; + } + } + } + if (gotabbr == 2) { + sp->charcnt = charcnt; + for (i = 0; i < ts->timecnt; i++) + if (sp->ats[sp->timecnt - 1] < ts->ats[i]) + break; + while (i < ts->timecnt + && sp->timecnt < TZ_MAX_TIMES) { + sp->ats[sp->timecnt] = ts->ats[i]; + sp->types[sp->timecnt] = (sp->typecnt + + ts->types[i]); + sp->timecnt++; + i++; + } + sp->ttis[sp->typecnt++] = ts->ttis[0]; + sp->ttis[sp->typecnt++] = ts->ttis[1]; + } } } if (sp->timecnt > 1) { -- 2.1.4

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North Korea ultimatum deadline time confusion
by Paul Eggert Aug. 22, 2015

Aug. 22, 2015

North Korea has delivered a 48-hour ultimatum to the South Korean Defense Ministry, saying that it will respond militarily unless South Korea stops broadcasting propaganda via loudspeakers over the border. There seems to be some confusion about the ultimatum's exact deadline. Ju-Min Park and James Person of Reuters report that although the ultimatum is "uncharacteristically specific", the deadline is "around 5 p.m. (0800 GMT) on Saturday in Seoul". Could the time confusion be due to the recent time zone change in North Korea? Park JM, Pearson J. North Korea goes on war footing against South Korea as deadline looms. Reuters 2015-08-21 12:53 -0400. http://www.reuters.com/article/2015/08/21/us-northkorea-southkorea-border-i… $ date -u; TZ=Asia/Pyongyang date; TZ=Asia/Seoul date Fri Aug 21 17:12:37 UTC 2015 Sat Aug 22 01:42:37 KST 2015 Sat Aug 22 02:12:37 KST 2015

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Time zone humor
by Matt Johnson Aug. 18, 2015

Aug. 18, 2015

For the art file http://www.maniacworld.com/time-zones-explained.html Enjoy!

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tzfiles contain Unix epoch for the first transition time
by Eric Erhardt Aug. 15, 2015

Aug. 15, 2015

I am working on enabling the .NET TimeZoneInfo class to read time zone information from tzfiles. I've hit a snag with the latest tzdata 2015f. (I'm not sure when this change started, but the problem doesn't occur with the tzfiles that are shipped with an Ubuntu 14.04 distribution.) The problem is that the 2015f version of the tzdata contains an initial "Transition Time" that is out of order. The beginning of the America/Chicago tzfile looks like the following: Transition Time Transition Offset 01/01/1970 00:00:00 -05:50:36 11/18/1883 18:00:00 -06:00:00 03/31/1918 08:00:00 -05:00:00 DST 10/27/1918 07:00:00 -06:00:00 Notice the first entry is for 1970, and then the next entry is for 1883. This breaks the documentation in 'man tzfile': The above header is followed by tzh_timecnt four-byte values of type long, sorted in ascending order. These values are written in "standard" byte order. Each is used as a transition time (as returned by time(2)) at which the rules for computing local time change. This causes the TimeZoneInfo parsing code to throw an exception because it is assuming these transitions are sorted in ascending order. Is this an intentional change in the tzfiles? If so, will the tzfile man page be updated for this change? Eric Erhardt

8 18

[PROPOSED PATCH] Fix comments re NK transition time, abbreviation
by Paul Eggert Aug. 15, 2015

Aug. 15, 2015

* asia (Asia/Pyongyang): Confirm 00:00 as transition time. Fix commentary about abbreviation. --- asia | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/asia b/asia index 4f8756b..78eed56 100644 --- a/asia +++ b/asia @@ -1717,11 +1717,12 @@ Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S # the 8:30 time zone on August 15, one example: # http://www.bbc.com/news/world-asia-33815049 # -# From Paul Eggert (2015-08-07): -# No transition time is specified; assume 00:00. +# From Paul Eggert (2015-08-15): +# Bells rang out midnight (00:00) Friday as part of the celebrations. See: +# Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time' +# http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-16403… # There is no common English-language abbreviation for this time zone. -# Use %z rather than invent one. We can't assume %z works everywhere yet, -# so for now substitute its output manually. +# Use KST, as that's what we already use for 1954-1961 in ROK. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 @@ -1735,7 +1736,7 @@ Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 8:30 - KST 1912 Jan 1 9:00 - JCST 1937 Oct 1 9:00 - JST 1945 Aug 24 - 9:00 - KST 2015 Aug 15 + 9:00 - KST 2015 Aug 15 00:00 8:30 - KST ############################################################################### -- 2.1.4

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Is there a zip archive withe the TZ zoneinfo data available ?
by Dave Sweeney Aug. 14, 2015

Aug. 14, 2015

Hello, I was wondering if IANA or a trusted partner provides a zip format of the TZ data and source file? Thank You and Regards, Dave Sweeney +1 (978) 451-0895 VMS Software Inc.

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propagation of North Korea and Uruguay changes
by Paul Eggert Aug. 13, 2015

Aug. 13, 2015

As part of routine system updates my Ubuntu 15.04 desktop now has 2015f's changes for North Korea and Uruguay. Ubuntu is downstream from Debian, so I assume other Debian-derived distributions also have the update; <http://metadata.ftp-master.debian.org/changelogs//main/t/tzdata/tzdata_2015…> says the Debian patch is dated 2015-08-11 19:56:35 +0200. <https://access.redhat.com/articles/1187353> says Red Hat takes at least five business days for QA and estimates their patch will be available for installation by tomorrow, which would be right around the time of North Korea's time zone change. Microsoft says an update for Windows in North Korea is planned by early September <http://blogs.technet.com/b/dst2007/archive/2015/08/07/upcoming-windows-dst-…>. I assume North Korea's own Red Star OS will be updated in time, though I don't know how to check this. <https://en.wikipedia.org/wiki/Red_Star_OS>

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[PROPOSED PATCH] Support %z in Zone formats
by Paul Eggert Aug. 12, 2015

Aug. 12, 2015

This extends the zic input format to add support for %z, which expands to a UTC offset in as-short-as-possible ISO 8601 format. It's intended to better support zones that do not have an established abbreviation already. This is a change only to zic; it does not affect the data, which can still be compiled with older zic versions. * NEWS, zic.8: Document this. * zic.c (struct zone): New member z_format_specifier. (PERCENT_Z_LEN_BOUND): New constant. (max_abbrvar_len): Initialize to it, rather than to 0. (associate, inzsub, doabbr): Add support for %z. (abbroffset): New function. (doabbr): 2nd arg is now struct zone *, not a char *. All callers changed. --- NEWS | 5 +++++ zic.8 | 13 +++++++++++ zic.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++------------- 3 files changed, 85 insertions(+), 15 deletions(-) diff --git a/NEWS b/NEWS index b7593e7..9eff28c 100644 --- a/NEWS +++ b/NEWS @@ -25,6 +25,11 @@ Unreleased, experimental changes (Thanks to Jon Skeet and Arthur David Olson.) Constraints on simultaneity are now documented. + The two characters '%z' in a zone format now stand for the UTC + offset, e.g., '-07' for seven hours behind UTC and '+0530' for + five hours and thirty minutes ahead. This better supports time + zone abbreviations conforming to POSIX.1-2001 and later. + Changes affecting installed data files Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, diff --git a/zic.8 b/zic.8 index dfb01db..94b6753 100644 --- a/zic.8 +++ b/zic.8 @@ -350,6 +350,19 @@ The pair of characters is used to show where the .q "variable part" of the time zone abbreviation goes. +Alternately, a format can use the pair of characters +.B %z +to stand for the UTC offset in the form +.RI \(+- hh , +.RI \(+- hhmm , +or +.RI \(+- hhmmss , +using the shortest form that does not lose information, where +.IR hh , +.IR mm , +and +.I ss +are the hours, minutes, and seconds east (+) or west (\(mi) of UTC. Alternately, a slash (/) separates standard and daylight abbreviations. diff --git a/zic.c b/zic.c index 6854033..3c4ae93 100644 --- a/zic.c +++ b/zic.c @@ -76,6 +76,7 @@ struct zone { zic_t z_gmtoff; const char * z_rule; const char * z_format; + char z_format_specifier; zic_t z_stdoff; @@ -130,6 +131,9 @@ static void rulesub(struct rule * rp, static zic_t tadd(zic_t t1, zic_t t2); static bool yearistype(int year, const char * type); +/* Bound on length of what %z can expand to. */ +enum { PERCENT_Z_LEN_BOUND = sizeof "+995959" - 1 }; + static int charcnt; static bool errors; static bool warnings; @@ -139,7 +143,7 @@ static bool leapseen; static zic_t leapminyear; static zic_t leapmaxyear; static int linenum; -static int max_abbrvar_len; +static int max_abbrvar_len = PERCENT_Z_LEN_BOUND; static int max_format_len; static zic_t max_year; static zic_t min_year; @@ -955,7 +959,7 @@ associate(void) ** Note, though, that if there's no rule, ** a '%s' in the format is a bad thing. */ - if (strchr(zp->z_format, '%') != 0) + if (zp->z_format_specifier == 's') error("%s", _("%s in ruleless zone")); } } @@ -1170,6 +1174,7 @@ static bool inzsub(char **fields, int nfields, bool iscont) { register char * cp; + char * cp1; static struct zone z; register int i_gmtoff, i_rule, i_format; register int i_untilyear, i_untilmonth; @@ -1201,13 +1206,21 @@ inzsub(char **fields, int nfields, bool iscont) z.z_linenum = linenum; z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UT offset"), true); if ((cp = strchr(fields[i_format], '%')) != 0) { - if (*++cp != 's' || strchr(cp, '%') != 0) { + if ((*++cp != 's' && *cp != 'z') || strchr(cp, '%') + || strchr(fields[i_format], '/')) { error(_("invalid abbreviation format")); return false; } } z.z_rule = ecpyalloc(fields[i_rule]); - z.z_format = ecpyalloc(fields[i_format]); + z.z_format = cp1 = ecpyalloc(fields[i_format]); + z.z_format_specifier = cp ? *cp : '\0'; + if (z.z_format_specifier == 'z') { + if (noise) + warning(_("format '%s' not handled by pre-2015 versions of zic"), + z.z_format); + cp1[cp - fields[i_format]] = 's'; + } if (max_format_len < strlen(z.z_format)) max_format_len = strlen(z.z_format); hasuntil = nfields > i_untilyear; @@ -1890,19 +1903,59 @@ writezone(const char *const name, const char *const string, char version) free(fullname); } +static char const * +abbroffset(char *buf, zic_t offset) +{ + char sign = '+'; + int seconds, minutes; + + if (offset < 0) { + offset = -offset; + sign = '-'; + } + + seconds = offset % SECSPERMIN; + offset /= SECSPERMIN; + minutes = offset % MINSPERHOUR; + offset /= MINSPERHOUR; + if (100 <= offset) { + error(_("%%z UTC offset magnitude exceeds 99:59:59")); + return "%z"; + } else { + char *p = buf; + *p++ = sign; + *p++ = '0' + offset / 10; + *p++ = '0' + offset % 10; + if (minutes | seconds) { + *p++ = '0' + minutes / 10; + *p++ = '0' + minutes % 10; + if (seconds) { + *p++ = '0' + seconds / 10; + *p++ = '0' + seconds % 10; + } + } + *p = '\0'; + return buf; + } +} + static size_t -doabbr(char *const abbr, const char *const format, const char *const letters, +doabbr(char *abbr, struct zone const *zp, char const *letters, bool isdst, bool doquotes) { register char * cp; register char * slashp; register size_t len; + char const *format = zp->z_format; slashp = strchr(format, '/'); if (slashp == NULL) { - if (letters == NULL) - strcpy(abbr, format); - else sprintf(abbr, format, letters); + char letterbuf[PERCENT_Z_LEN_BOUND + 1]; + if (zp->z_format_specifier == 'z') + letters = abbroffset(letterbuf, -zp->z_gmtoff); + else if (!letters) + letters = "%s"; + sprintf(abbr, format, letters); } else if (isdst) { strcpy(abbr, slashp + 1); } else { @@ -2127,7 +2180,7 @@ stringzone(char *result, const struct zone *const zpfirst, const int zonecount) if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0)) return -1; abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar; - len = doabbr(result, zp->z_format, abbrvar, false, true); + len = doabbr(result, zp, abbrvar, false, true); offsetlen = stringoffset(result + len, -zp->z_gmtoff); if (! offsetlen) { result[0] = '\0'; @@ -2136,7 +2189,7 @@ stringzone(char *result, const struct zone *const zpfirst, const int zonecount) len += offsetlen; if (dstrp == NULL) return compat; - len += doabbr(result + len, zp->z_format, dstrp->r_abbrvar, true, true); + len += doabbr(result + len, zp, dstrp->r_abbrvar, true, true); if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR) { offsetlen = stringoffset(result + len, -(zp->z_gmtoff + dstrp->r_stdoff)); @@ -2307,8 +2360,7 @@ outzone(const struct zone * const zpfirst, const int zonecount) startoff = zp->z_gmtoff; if (zp->z_nrules == 0) { stdoff = zp->z_stdoff; - doabbr(startbuf, zp->z_format, - NULL, stdoff != 0, false); + doabbr(startbuf, zp, NULL, stdoff != 0, false); type = addtype(oadd(zp->z_gmtoff, stdoff), startbuf, stdoff != 0, startttisstd, startttisgmt); @@ -2400,7 +2452,7 @@ outzone(const struct zone * const zpfirst, const int zonecount) if (ktime < starttime) { startoff = oadd(zp->z_gmtoff, stdoff); - doabbr(startbuf, zp->z_format, + doabbr(startbuf, zp, rp->r_abbrvar, rp->r_stdoff != 0, false); @@ -2410,7 +2462,7 @@ outzone(const struct zone * const zpfirst, const int zonecount) startoff == oadd(zp->z_gmtoff, stdoff)) { doabbr(startbuf, - zp->z_format, + zp, rp->r_abbrvar, rp->r_stdoff != false, @@ -2419,7 +2471,7 @@ outzone(const struct zone * const zpfirst, const int zonecount) } eats(zp->z_filename, zp->z_linenum, rp->r_filename, rp->r_linenum); - doabbr(ab, zp->z_format, rp->r_abbrvar, + doabbr(ab, zp, rp->r_abbrvar, rp->r_stdoff != 0, false); offset = oadd(zp->z_gmtoff, rp->r_stdoff); type = addtype(offset, ab, rp->r_stdoff != 0, -- 2.1.4

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Re: [tz] Time zone humor
by Matt Johnson Aug. 11, 2015

Aug. 11, 2015

Thanks! Sent from my Windows Phone ________________________________ From: Paul Eggert<mailto:eggert@cs.ucla.edu> Sent: ‎8/‎11/‎2015 1:11 PM To: Matt Johnson<mailto:mj1856@hotmail.com> Cc: Time zone mailing list<mailto:tz@iana.org> Subject: Re: Time zone humor Steve Jones did the legwork on the Laugh-In show number; attached is a proposed patch. The git commit log is "* tz-art.htm: Add Goldie Hawn. (Thanks to Matt Johnson & Steve Jones.)"

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[tz-announce] 2015f release of tz code and data available
by Paul Eggert Aug. 11, 2015

Aug. 11, 2015

The 2015f release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Changes affecting future time stamps North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) The abbreviation remains "KST". (Thanks to Robert Elz.) Uruguay no longer observes DST. (Thanks to Steffen Thorsen and Pablo Camargo.) Changes affecting past and future time stamps Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. (Thanks to Roman Tudos.) Changes affecting data format and code zic's '-y YEARISTYPE' option is no longer documented. The TYPE field of a Rule line should now be '-'; the old values 'even', 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. Although the implementation has not changed, these features do not work in the default installation, they are not used in the data, and they are now considered obsolescent. zic now checks that two rules don't take effect at the same time. (Thanks to Jon Skeet and Arthur David Olson.) Constraints on simultaneity are now documented. The two characters '%z' in a zone format now stand for the UTC offset, e.g., '-07' for seven hours behind UTC and '+0530' for five hours and thirty minutes ahead. This better supports time zone abbreviations conforming to POSIX.1-2001 and later. Changes affecting installed data files Comments for America/Halifax and America/Glace_Bay have been improved. (Thanks to Brian Inglis.) Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, Europe/Sofia, and Europe/Tallinn. This yields slightly smaller installed data files for Europe/Simferopol and Europe/Tallinn. It does not affect timestamps. (Thanks to Howard Hinnant.) Changes affecting code zdump and zic no longer warn about valid time zone abbreviations like '-05'. Some Visual Studio 2013 warnings have been suppressed. (Thanks to Kees Dekker.) 'date' no longer sets the time of day and its -a, -d, -n and -t options have been removed. Long obsolescent, the implementation of these features had porting problems. Builders no longer need to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. (Thanks to Kees Dekker for pointing out the problem.) Changes affecting documentation The Theory file mentions naming issues earlier, as these seem to be poorly publicized (thanks to Gilmore Davidson for reporting the problem). tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). Mention that Herbert Samuel introduced the term "Summer Time". Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2015f.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2015f.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2015f.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2015f.tar.gz As usual, links to the latest release files are here: http://www.iana.org/time-zones/repository/tzcode-latest.tar.gz http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz ftp://ftp.iana.org/tz/tzcode-latest.tar.gz ftp://ftp.iana.org/tz/tzdata-latest.tar.gz Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 6230594d225d7b2f40957ad602890a6bbb1e79ed dated Mon Aug 10 18:06:56 2015 -0700 and tagged '2015f' in the experimental github repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 5cfbebde8a0be57e8388a7b6d35aeba99130a72c1a41f9bbd5d5864511a473aa5e9320ab21055b4383e64b3b9d7682c0d30377ce8407619987be672436014710 tzcode2015f.tar.gz d86e6c9e4c6d9cd5de30762723d7a90ac697feeb6dd1f04649f6a35e4e1dc638261c32066db4aeafa767ac339ccd100c38dde044ceadd61e95cb3d39c27f977e tzdata2015f.tar.gz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVyUtJAAoJEO2X6Q5iqn403AUP/A4bYIu7hVztxaMBlQ93XE3i TEopwXq7eH6YuwgIIAjQCLTrFeYj3LmWlDNaO4eGgZxr6NoN1QcrNKeHjQSDcP35 pNJs+KonQhakxQn8TXBfhhQkhJNIoUOfGxgao5aYC2ZWZXWJ9NTKuc+JTcd1AM73 R3SQdsONkBqtCXjINEAYqj1rYHBpYRfZ1Gx7NA8Ryg2JDi9Od3trwZofTcLMqcnt PoHrOq6JV1mdEN7e9GyxOEt4FxjfPBmYVoaAqyZG+sJCLYtcFVWLUvCQBKOjPLbI 4gFw36eqylDHxbTlQkymv1Ys1wQh09/J0SZE68H/g6nUIVpdqbYsm86oj3Di2fod 7O7CdJpgnpreoXW2/C5UoRJjpZGSuvHyHYOi5leFLvQMEqoJE6c1heXQxlFMdDqU sAQg+A+1LKUo9pBg7kZugerfq19iekWeXbDQwRIoOk5kxQv2p2ILprVglxfztmOp 7qc+I+1tWDWlqu3eOglhDlO43SltYha6Mkvj0bINK4KBjsWXCXbvorsbCeGsl35W m1yA9Ot/wCpqGPmHUxykaoK7ncvP82iCF9QbO/0/GhgjLmbf1mbech5JTa7Cw/IX 7z9BS7dn7ZPaRvPB0onXVM/3i6KfgF1qx4ikS05rnwKoy8EYmC5yoOoksltzi1lw LlupIt5hqHPqvmaW1npi =dUDd -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVyUtQAAoJEO2X6Q5iqn40is8P/006dw57YcxGLaPn767wjhf4 6P+c4s3fAPXofc08Gd5kr97NVNPPmi2is7DKjJ7X8rie2208qf9tGiF37V0bzf6J TfbNRzoaja7qW+i58iHeZOEJiuapF/DO6pR/PA0y1dINemlowQfQECYq2TtIN0uK ZwnxL67fnGBAJyI0uhlBUP+YoV4/8Lzw3/or0qP2fudBmEuQoMgqeLKbE4KholPF RmdGcEgX8gFvXcmYG3nA0LQ1GeTCuCuf09HjTOddv66IUjM7nnzgaksBuDhKB5GT UZMhGnEQF+iSfe0Sbg28AA1F1G2Obd+vbnvPe1s0t9Q8hVvk0QHf7al9PAIEaMrf Dpv5hKl720aHeE5nO0AywJXtizJOWpUffghgQywYxVDAonYgir/5x54ibgTLEvzn qCAo3J4fwHcmWkH4LOFIRgjq2NSIZcoX/yORf/u1YOEBlx9fviEE70jOZwziXGra jZTyujhaIB4/JeCKKR7dfAARvuSztDKcuMSNhHJGrojR0Vb37ghOIiZlDHaMOAxk VaIDUQEcqHV9QCoZVkhp7lpYTRDAX6LcbBOf+pdm4yJdrmdVQ0uR4Lnvpep5Ctil QcoQ3NiVQkdmDQGjohe+ReQb6n9vE8VKr8sYZuU9Zvbk9tNyWSeTDFmsEJWlH0Iy uEa8hH03uLJpelMpkRK7 =B5lv -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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[PATCH] HTML link maintenance
by Paul Eggert Aug. 11, 2015

Aug. 11, 2015

* tz-art.htm: Update obsolete links, mostly to allmusic.com. Put the end-of-the-world joke at the end, where it belongs. * tz-link.htm: Move Seymour link to archive.org, since it's still useful but cstdbill.com no longer works. Remove obsolete link to toi.inrim.it. Update links in tz-link.htm * tz-link.htm: Use archive.org for "How to Read the tz Database", as the web site appears to be permanently down but the link is still useful. Remove the obsolete and no-longer-working link to "The Time of Internet". --- tz-art.htm | 50 ++++++++++++++++++++++++-------------------------- tz-link.htm | 9 ++------- 2 files changed, 26 insertions(+), 33 deletions(-) diff --git a/tz-art.htm b/tz-art.htm index 07059ee..63b7c09 100644 --- a/tz-art.htm +++ b/tz-art.htm @@ -34,7 +34,7 @@ Todd Strait, drums</td></tr> <tr><td>Notes</td><td>CD notes "additional lyric by Karrin Allyson; arranged by Russ Long and Karrin Allyson"</td></tr> <tr><td>ADO Rating</td><td>1 star</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A1fdovw9ta92k">AMG Rating</a></td><td>4 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/i-didnt-know-about-you-mw0000618657">AMG Rating</a></td><td>4 stars</td></tr> <tr><td>Penguin Rating</td><td>3.5 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Kevin Mahogany</td></tr> @@ -49,7 +49,7 @@ Ray Drummond, bass; Ralph Moore, tenor saxophone; Lewis Nash, drums</td></tr> <tr><td>ADO Rating</td><td>1.5 stars</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=Akikbikzjbb19">AMG Rating</a></td><td>3 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/double-rainbow-mw0000620371">AMG Rating</a></td><td>3 stars</td></tr> <tr><td>Penguin Rating</td><td>3 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Joe Williams</td></tr> @@ -63,7 +63,7 @@ The Robert Farnon [39 piece] Orchestra</td></tr> <tr><td>Notes</td><td>This CD is also available as part of a 3-CD package from Telarc, "Triple Play" (CD-83461)</td></tr> <tr><td>ADO Rating</td><td>black dot</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=Amyyvad6kt8w1">AMG Rating</a></td><td>2 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/heres-to-life-mw0000623648">AMG Rating</a></td><td>2 stars</td></tr> <tr><td>Penguin Rating</td><td>3 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Charles Fambrough</td></tr> @@ -77,10 +77,8 @@ Joel Levine, tenor recorder; Edward Simon, piano; Lenny White, drums; Marion Simon, percussion</td></tr> -<tr><td>Notes</td><td>On-line information and samples available at -<a href="http://wwmusic.com/~music/audioq/rel/1033.html">http://wwmusic.com/~music/audioq/rel/1033.html</a></td></tr> <tr><td>ADO Rating</td><td>2 stars</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A5rkcikcjbb89">AMG Rating</a></td><td>unrated</td></tr> +<tr><td><a href="http://www.allmusic.com/album/keeper-of-the-spirit-mw0000176559">AMG Rating</a></td><td>unrated</td></tr> <tr><td>Penguin Rating</td><td>3 stars</td></tr> </table> <hr> @@ -98,7 +96,7 @@ David Piltch, string bass</td></tr> <tr><td>Notes</td><td>Lyrical reference to "Eastern Standard Time" in Tom Waits' "Purple Avenue"</td></tr> <tr><td>ADO Rating</td><td>2.5 stars</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A3a9ds37ya3dg">AMG Rating</a></td><td>3 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/blame-it-on-my-youth-mw0000274303">AMG Rating</a></td><td>3 stars</td></tr> <tr><td>Penguin Rating</td><td>unrated</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Milt Hinton</td></tr> @@ -125,11 +123,11 @@ Sometimes I'm Happy, A Hot Time in the Old Town Tonight, Four or Five Times, Now's the Time, Time on My Hands, This Time It's Us, -and Good Time Charlie -On-line samples available at -<a href="http://www.chiaroscurojazz.com/albuminfo.php4?albumid=49">http://www.chiaroscurojazz.com/albuminfo.php3?albumid=49</a></td></tr> +and Good Time Charlie. +<a href="http://www.chiaroscurojazz.com/album.php?C=310">Album info</a> +is available.</td></tr> <tr><td>ADO Rating</td><td>3 stars</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A1cbyxdab8ola">AMG Rating</a></td><td>4.5 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/old-man-time-mw0000269353">AMG Rating</a></td><td>4.5 stars</td></tr> <tr><td>Penguin Rating</td><td>3 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Alan Broadbent</td></tr> @@ -143,7 +141,7 @@ Putter Smith, Bass; Frank Gibson, Jr., drums</td></tr> <tr><td>Notes</td><td>The CD cover features an analemma for equation-of-time fans</td></tr> <tr><td>ADO Rating</td><td>1 star</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=Asl8zefuk8gfo">AMG Rating</a></td><td>4 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/pacific-standard-time-mw0000645433">AMG Rating</a></td><td>4 stars</td></tr> <tr><td>Penguin Rating</td><td>3.5 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Anthony Braxton/Richard Teitelbaum</td></tr> @@ -158,7 +156,7 @@ Leo Smith, trumpet and miscellaneous instruments; Leroy Jenkins, violin and miscellaneous instruments; Richard Teitelbaum, modular moog and micromoog synthesizer</td></tr> <tr><td>ADO Rating</td><td>black dot</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A5bkvu3xjan1k">AMG Rating</a></td><td>unrated</td></tr> +<tr><td><a href="http://www.allmusic.com/album/silence-time-zones-mw0000595735">AMG Rating</a></td><td>4 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Charles Gayle</td></tr> <tr><td>CD</td><td>Time Zones</td></tr> @@ -168,7 +166,7 @@ Richard Teitelbaum, modular moog and micromoog synthesizer</td></tr> <tr><td>Total Time</td><td>49:06</td></tr> <tr><td>Personnel</td><td>Charles Gayle, piano</td></tr> <tr><td>ADO Rating</td><td>1 star</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:13rc28vw054a">AMG Rating</a></td><td>4.5 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/time-zones-mw0000349642">AMG Rating</a></td><td>4.5 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>The Get Up Kids</td></tr> <tr><td>CD</td><td>Eudora</td></tr> @@ -177,7 +175,7 @@ Richard Teitelbaum, modular moog and micromoog synthesizer</td></tr> <tr><td>ID</td><td>357</td></tr> <tr><td>Total Time</td><td>65:12</td></tr> <tr><td>Notes</td><td>Includes the song "Central Standard Time." Thanks to Colin Bowern for this information.</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:7ddovwvla9xk">AMG Rating</a></td><td>2.5 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/eudora-mw0000592063">AMG Rating</a></td><td>2.5 stars</td></tr> <tr><td> </td></tr> <tr><td>Artist</td><td>Coldplay</td></tr> @@ -210,7 +208,7 @@ Supernaw.</td></tr> <tr><td>ID</td><td>272</td></tr> <tr><td>Total Time</td><td>73:05</td></tr> <tr><td>Notes</td><td>Includes the song "Twilight Time Zone."</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:w9fpxzykldje">AMG Rating</a></td><td>3.5 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/lobster-leaps-in-mw0000794929">AMG Rating</a></td><td>3.5 stars</td></tr> <tr><td>ADO Rating</td><td>2 stars</td></tr> <tr><td> </td></tr> @@ -221,7 +219,7 @@ Supernaw.</td></tr> <tr><td>Label</td><td>Columbia</td></tr> <tr><td>ID</td><td>CK-8905</td></tr> <tr><td>Total Time</td><td>45:36</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:gifqxqt5ld0e">AMG Rating</a></td><td>4.5 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/the-times-they-a-changin-mw0000202344">AMG Rating</a></td><td>4.5 stars</td></tr> <tr><td>ADO Rating</td><td>1.5 stars</td></tr> <tr><td>Notes<td>The title song is also available on "Bob Dylan's Greatest Hits" and "The Essential Bob Dylan."</td></tr> <tr><td> </td></tr> @@ -232,7 +230,7 @@ Supernaw.</td></tr> <tr><td>Label</td><td>Universal Jazz France</td></tr> <tr><td>ID</td><td>B0012688-02</td></tr> <tr><td>Total Time</td><td>42:31</td></tr> -<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:3bftxzw0ldhe">AMG Rating</a></td><td>3.5 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/tide-mw0000815692">AMG Rating</a></td><td>3.5 stars</td></tr> <tr><td>ADO Rating</td><td>2.5 stars</td></tr> <tr><td>Notes<td>Includes the song "Fire and Wood" with the lyric "The clocks were turned back you remember/Think it's still November." @@ -245,7 +243,7 @@ Supernaw.</td></tr> <tr><td>ID</td><td>B0005171-02</td></tr> <tr><td>Total Time</td><td>156:22</td></tr> <tr><td>ADO Rating</td><td>1 star</td></tr> -<tr><td><a href="http://www.allmusic.com/album/youre-getting-better-the-word-jazz-dot-master…">AMG Rating</a></td><td>4.5 stars</td></tr> +<tr><td><a href="http://www.allmusic.com/album/youre-getting-better-the-word-jazz-dot-master…">AMG Rating</a></td><td>4.5 stars</td></tr> <tr><td>Notes</td><td>Includes the piece "What Time Is It" ("He knew what time it was everywhere...that counted").</td></tr> <tr><td> </td></tr> @@ -491,6 +489,13 @@ or are you just trying to dazzle me with your command of time zones?" entitled "The Kid," originally aired 1997-11-04) </li> <li> +"I put myself and my staff through this crazy, huge ordeal, all because +I refused to go on at midnight, okay? And so I work, you know, and +then I get this job at eleven, supposed to be a big deal. Then +yesterday daylight [saving] time ended. Right now it's basically +midnight." (Conan O'Brien on the 2010-11-08 premiere of Conan.) +</li> +<li> Peppermint Patty: "What if the world comes to an end tonight, Marcie?" Marcie: "I promise there'll be a tomorrow, sir ... in fact, @@ -498,13 +503,6 @@ it's already tomorrow in Australia!" (Charles M. Schulz, Peanuts, 1980-06-13) </li> -<li> -"I put myself and my staff through this crazy, huge ordeal, all because -I refused to go on at midnight, okay? And so I work, you know, and -then I get this job at eleven, supposed to be a big deal. Then -yesterday daylight [saving] time ended. Right now it's basically -midnight." (Conan O'Brien on the 2010-11-08 premiere of Conan.) -</li> </ul> </body> </html> diff --git a/tz-link.htm b/tz-link.htm index 85d71f2..cc44768 100644 --- a/tz-link.htm +++ b/tz-link.htm @@ -8,7 +8,7 @@ <meta http-equiv="Content-type" content='text/html; charset="UTF-8"'> <meta name="DC.Creator" content="Eggert, Paul"> <meta name="DC.Contributor" content="Olson, Arthur David"> -<meta name="DC.Date" content="2015-07-18"> +<meta name="DC.Date" content="2015-08-10"> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time"> <meta name="DC.Identifier" @@ -160,7 +160,7 @@ Here are some links that may be of interest. <li>The article <a href="https://en.wikipedia.org/wiki/Tz_database">tz database</a> is an encyclopedic summary.</li> -<li><a href="http://www.cstdbill.com/tzdb/tz-how-to.html">How to Read the +<li><a href="https://web.archive.org/web/20140221080916/http://www.cstdbill.com/tzdb/tz-…">How to Read the tz Database Source Files</a> explains the <code><abbr>tz</abbr></code> database format.</li> <li><a @@ -547,11 +547,6 @@ Saving Energy</a> discusses a primary justification for <abbr>DST</abbr>.</li> <li><a href="http://seizethedaylight.com/dst/">A Brief History of Daylight Saving Time</a> summarizes some of the contentious history of <abbr>DST</abbr>.</li> -<li><a href="http://toi.inrim.it/uk/toi.html">The -Time of Internet</a> -describes time zones and daylight saving time, -with diagrams. -The time zone map is out of date, however.</li> <li><a href="http://www.staff.science.uu.nl/~gent0113/idl/idl.htm">A History of the International Date Line</a> tells the story of the most important time zone boundary.</li> -- 2.1.4

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North Korea into +8:30 time zone
by Steffen Thorsen Aug. 8, 2015

Aug. 8, 2015

According to many news sources, North Korea is going to change to the 8:30 time zone on August 15, one example: http://www.bbc.com/news/world-asia-33815049 This probably needs a new time zone abbreviation, some ideas: PST - Pyongyang Standard Time PYT - Pyongyang Time (based on the translation below, it sounds like this is the name they are going to use themselves) PT - Pyongyang Time (only two letters) NKT - North Korea Time The official, but extremely slow web site does not seem to support deep linking, but this morning its shown on http://www.kcna.kp/ And the raw text is: (평양 8월 7일발 조선중앙통신) 조선에서 조국해방 70돐을 맞으며 표준시간을 제정하기로 결정하였다. 5일 발표된 최고인민회의 상임위원회 정령에는 다음과 같이 지적되였다. 민족재생의 은인이시며 절세의 애국자이신 위대한 김일성동 지께서 항일의 혈전만리를 헤치시여 강도 일제를 때려부시고 조국을 해방하신 8월 15일은 파란많은 민족수난의 력사에 종지부를 찍고 우리 조국과 인민의 운명개척에서 근본적인 전환을 가져온 력사적인 날이다. 간악한 일본제국주의자들은 반만년의 오랜 력사와 문화를 자랑하던 삼천 리강토를 무참히 짓밟고 전대미문의 조선민족말살정책을 일삼으면서 조선의 표준시간까지 빼앗는 천추에 용서 못할 범죄행위를 감행하였다. 피로 얼룩진 일제의 백년죄악을 결산하고 민족의 자주권을 굳건히 수호 하며 위대한 김일성동지와 김정일동지의 불멸의 존함으로 빛나는 백두산대국 의 존엄과 위용을 영원토록 세계만방에 떨쳐나가려는것은 조선군대와 인민의 철석같은 신념이며 의지이다. 조선민주주의인민공화국 최고인민회의 상임위원회는 조국해방 70돐을 맞 으며 조선군대와 인민의 억척불변의 신념과 의지를 반영하여 다음과 같이 결 정한다. 1. 동경 127°30′을 기준으로 하는 시간(현재의 시간보다 30분 늦은 시 간)을 조선민주주의인민공화국 표준시간으로 정하고 평양시간으로 명명한다. 2. 평양시간은 주체104(2015)년 8월 15일부터 적용한다. 3. 조선민주주의인민공화국 내각과 해당 기관들은 이 정령을 집행하기 위한 실무적대책을 세울것이다.(끝) Which Google Translates to: (Pyongyang, August 07, KCNA) Occasion of 70 anniversary of the national liberation in Korea was decided to establish a standard time. 5 Presidium of the Supreme People's Assembly ordinance published days doeyeotda pointed out as follows: Yisimyeo great benefactor, O peoples of the tax of Comrade Kim Il Sung, who played the Patriots had hurt the anti-Japanese to beat the strength of the clot Great assholes who liberated the country on August 15 in Japan put an end to the work eventful history of our country and the fate of peoples suffering pioneered People In a historic day it brought a fundamental shift. Japan wicked imperialists sameu days while the long history and ruthlessly trampling the Samchully Granite was proud of the culture of the Korean nation's first ever policy of extermination banmannyeon were not venturing a criminal offense to forgiveness takes away the sacral standard time line. Closing the bloody Japanese one hundred years of sin, and firmly safeguard the sovereignty of the nation and the exit Kim Il Sung and the great nations of the world and forever immortal shake the dignity and majesty of the giant glowing Paektu Kim Jong Il is a jonham of shipbuilding in the People's Army and cheolseok The same conviction and commitment. The People's Assembly of the Democratic People's Republic of highest Standing Committee decided as follows to reflect the belief and the will of the one hundred million of the Korean army and people invariably occasion of 70 anniversary of the liberation of the motherland. 1. Tokyo, 127 ° 30 hours relative to '(30 minutes later than the current time of the time) decided by the Democratic People's Republic of Korea Standard Time will be referred to Pyongyang time. 2. Subject to Pyongyang Time 104 (2015) effective from August 15th. 3. The Government of North Korea and its agencies will establish the practical measures to enforce the ordinance. (End) Best regards, Steffen Thorsen - timeanddate.com

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[PROPOSED PATCH] * NEWS, europe: Mention Herbert Samuel.
by Paul Eggert Aug. 8, 2015

Aug. 8, 2015

--- NEWS | 2 ++ europe | 5 ++++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/NEWS b/NEWS index 7be4d95..18cf4fa 100644 --- a/NEWS +++ b/NEWS @@ -64,6 +64,8 @@ Unreleased, experimental changes tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). + Mention that Herbert Samuel introduced the term "Summer Time". + Release 2015e - 2015-06-13 10:56:02 -0700 diff --git a/europe b/europe index 28b2b93..6b89b6e 100644 --- a/europe +++ b/europe @@ -193,11 +193,14 @@ # republished in Finest Hour (Spring 2002) 1(114):26 # http://www.winstonchurchill.org/images/finesthour/Vol.01%20No.114.pdf -# From Paul Eggert (1996-09-03): +# From Paul Eggert (2015-08-08): # The OED Supplement says that the English originally said "Daylight Saving" # when they were debating the adoption of DST in 1908; but by 1916 this # term appears only in quotes taken from DST's opponents, whereas the # proponents (who eventually won the argument) are quoted as using "Summer". +# The term "Summer Time" was introduced by Herbert Samuel, Home Secretary; see: +# Viscount Samuel. Leisure in a Democracy. Cambridge University Press +# ISBN 978-1-107-49471-8 (1949, reissued 2015), p 8. # From Arthur David Olson (1989-01-19): # A source at the British Information Office in New York avers that it's -- 2.1.4

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North Korea (Asia/Pyongyang) to switch to UTC+8:30
by Kang Seonghoon Aug. 7, 2015

Aug. 7, 2015

https://en-maktoob.news.yahoo.com/turning-back-clock-north-korea-creates-py… Note that the exact transition time is not specified (0:00 UTC+9:00? 0:00 UTC+8:30? I don't know). I couldn't find any specifics about that. -- -- Kang Seonghoon | http://mearie.org/ -- Opinions expressed in this email do not necessarily represent the views of my employer. --

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North Korea timezone will change the standard time.
by Jongsoo Lee Aug. 7, 2015

Aug. 7, 2015

Hello North Korea's standard time will be GMT+8:30 from Aug. 15 2015. According to the news, North Korea will push back its standard time by 30 minutes to mark the 70th anniversary of liberation from Japan's colonial rule, the country's official news agency said Friday. North Korea's clocks will be moved back a half-hour starting on the upcoming Aug. 15 anniversary, the Korean Central News Agency said. "The time at 127 degrees 30 minutes east longitude or 30 minutes later than the present one shall be fixed as the standard time of the DPRK and called Pyongyang time," the KCNA report said. DPRK is the country's official name, Democratic People's Republic of Korea. Reference link: http://english.yonhapnews.co.kr/search1/2603000000.html?cid=AEN2015080700155 2315 Regards Jongsoo Lee

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North Korea clocks tick back 30 minutes after August 15
by Zhengang Li Aug. 7, 2015

Aug. 7, 2015

Not sure if this has been posted, but here is the link: https://au.news.yahoo.com/world/a/29206511/n-korea-puts-back-its-clocks-to-… Their government official news agency's website does have a link title says 'Pyongyang Time Fixed'. But the website went down after I tried to follow the link :P Zhengang

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suggestions for potential code improvements?
by Kees Dekker July 31, 2015

July 31, 2015

Hi, I extracted the v2015e code and like to ask some things: 1. Why do you not always initialize the variables that are now passed to the INITIALIZE macro (see date.c/localtime.c/zic.c/private.h)? It has (almost) no impact on performance and prevents strict compilers to complain about (potentially) non-initialized variables. If you assign zero upon declaration, the INITIALIZE macro can go away. 2. In asctime_r() (asctime.c:72 and later) two arrays are used for week days. These arrays use a size of '3' for a 3-letter weekday. I expect to use an array of '4', because the '\0' character need to fit too, because the wn and mn variables are used in a call to sprintf() (line 106), where sprintf() normally requires to use 0-terminated strings. By using a '4'-sized array, this is automatically achieved. I don't know whether all sprintf() implementations for all operating systems respect the width/size specifier and allow non-0 terminated string. Now a size/width of '3' is specified, which is not needed if the strings are well terminated, or by accident used somewhere else. I really appreciate if you will do something with these suggestions. Regards, Kees

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CST timezone that does not account for DST
by Nilesh Parmar July 31, 2015

July 31, 2015

Hello Team, How can we have CST timezone that does not account for DST ? Using the POSIX string, we can create a timezone called CST that is GMT+6 as follows: [root@hp-dl120gen9-01 ~]# TZ=:CST6 date Thu Jul 9 06:50:29 CST 2015 But this is not consitent if tzdata package is update. Also this does take into account DST change? Thanks, Nilesh P.

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Time zone identifiers in user interfaces
by Gilmore Davidson July 30, 2015

July 30, 2015

Hi, long time lurker here, finally throwing my voice into the ring. This is a follow-up to the “Time Zone City for China” thread a week ago (starting at http://mm.icann.org/pipermail/tz/2015-July/022480.html <http://mm.icann.org/pipermail/tz/2015-July/022480.html> ). What particularly caught my attention was the discussion about the use of time zone IDs in user interfaces. Paul Eggert: "The string 'Asia/Shanghai' is a tzdata-specific identifier, not intended to be visible to non-experts.” Guy Harris: "Several time zone selectors I've seen are lazily-written crap that either directly display the tzdb name or tweak it slightly by, for example, splitting it into continent and city and displaying them in a more "user-friendly" form.” Guy Harris: “> Looks like this logic is not well understood by the communities. Then we need to do a better job of explaining it to them.” Not to put too fine a point on it… Yes, there needs to be a better job done of explaining that the city names in time zone IDs should not be used in user interfaces. After reading that discussion I went looking through the tzdb files for guidance around the use of IDs in UIs. All I managed to find was this snippet in the Theory file, on line 385: This naming convention is not intended for use by inexperienced users to select TZ values by themselves (though they can of course examine and reuse existing settings). Distributors should provide documentation and/or a simple selection interface that explains the names; see the 'tzselect' program supplied with this distribution for one example. Given that the above snippet is around halfway through the file – and its wording still provides a fair bit of leeway – it’s not exactly enforcing the stronger opinions displayed on this list about how the IDs should be used. For some context, my domain knowledge is restricted to web sites/applications, so I can’t speak to the OS-level discussions in the previous thread. What I do know is how web developers deal with time zones, if they deal with them at all. For the most part, they use a library specific to their language of choice which slightly abstracts the tzdb data. There are two things these libraries have in common: 1. They use tzdb zone identifiers as the primary part of their API. 2. They don’t have any mentions in their documentation that these identifiers are not for public display. This is not me picking on time zone library authors, as I know that some of them are on this mailing list. My main point is that web developers are, for the most part, so abstracted from the tzdb source that the zone IDs are the only interface they know. Therefore the IDs are what they put in their selection UIs. There’s also the not-insignificant matter of localisation of display names (even Moment Timezone, referenced in tz-link.htm, notes in its API documentation: "Because these strings are generally localized, Moment Timezone does not provide any long names for zones.”). Personally, I didn’t know of the existence of CLDR until I started reading this mailing list. So, instead of dismissing zone-IDs-in-a-user-interface as “lazily written crap”, how about we: a) Acknowledge that most web-based UIs for picking time zones are written by developers who genuinely don’t know any better (I count my past self in this category) b) Make an effort to better educate them about recommended uses of the IDs. I am not intending for this to come across as antagonistic or facetious. I just genuinely want the quality of time zone selectors on the web to improve. Cheers, Gil

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[PROPOSED PATCH 1/2] * southamerica: Give source for 1965 Venezuela transition.
by Paul Eggert July 30, 2015

July 30, 2015

--- southamerica | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/southamerica b/southamerica index dcc063f..dd9235f 100644 --- a/southamerica +++ b/southamerica @@ -1734,6 +1734,10 @@ Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 # Venezuela # +# From Paul Eggert (2015-07-28): +# For the 1965 transition see Gaceta Oficial № 27.619 (1964-12-15), p 205.533 +# http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf +# # From John Stainforth (2007-11-28): # ... the change for Venezuela originally expected for 2007-12-31 has # been brought forward to 2007-12-09. The official announcement was @@ -1745,6 +1749,6 @@ Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Caracas -4:27:44 - LMT 1890 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? - -4:30 - VET 1965 # Venezuela Time + -4:30 - VET 1965 Jan 1 0:00 # Venezuela T. -4:00 - VET 2007 Dec 9 3:00 -4:30 - VET -- 2.1.4

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Uruguay out of DST
by J J July 24, 2015

July 24, 2015

>> >>* Source: http://www.camtur.com.uy/index.php/noticias/281-se-derogo-decreto-del-cambi… <http://www.camtur.com.uy/index.php/noticias/281-se-derogo-decreto-del-cambi…> * >> That is a press release published by an organization lobbying for the change, >> and surely such a source is less reliable than the newspapers we're already citing. >> The whole thing is very mysterious, at least to this outsider. Here is the decree signed by the president of Uruguay, on presidency website, http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf

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Uruguay out of DST
by Steffen Thorsen July 24, 2015

July 24, 2015

According to media in Uruguay, it looks like they will not be using DST the coming summer: http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horari… http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-ur… It is a bit unclear if this is just this coming summer, or a permanent change. Our English summary (will be updated when we know more details): http://www.timeanddate.com/news/time/uruguay-stops-dst-2015.html Best regards, Steffen Thorsen - timeanddate.com

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Time Zone City for China
by 寇含军 July 23, 2015

July 23, 2015

Dear Sir or Madam, I have a question that bothered me for many years since I started to use the Linux systems. When we, Chinese users, are selecting the desired timezone for our Linux boxes, we always feel weird that there has been no "Asia/Beijing". Instead we see "Asia/Shanghai" or "Asia/Chongqing". This might by how IANA "thinks" what the China timezone convention is, but SERIOUSLY this is not what we, Chinese users, are expecting. We would be very happy to see "Asia/Beijing" among the list. I googled that this question has been asked in many places to different maintainers or distributors, and finally I figured out that IANA is the ultimate upstream who can fix this issue. As a matter of fact, if you take a look at the Windows time zone settings dialog, Beijing is in the list, but no Shanghai. Please add ""Asia/Beijing" to the list. Please take it into consideration and thank you very much! Best Regards, Hanjun Kou, an ordinary Chinese Linux user

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