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Cayman Islands considering DST
by Paul Eggert Oct. 21, 2014

Oct. 21, 2014

The Cayman Islands are considering the use of daylight saving time for the first time. The government is inviting public comment through October 30. Arguments for DST include better synchronization with New York financial markets as well as stimulating tourism. See: Ministry of Financial Services, Commerce & Environment, Cayman Islands Government. Introduction of daylight savings time in the Cayman Islands. 2014-09-15. http://www.dci.gov.ky/pls/portal/url/item/0322D04AF1235B50E0506F0A6F1F5D58

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Fiji DST Oct 26
by Ken Rylander Oct. 21, 2014

Oct. 21, 2014

Hi Paul, There might be an issue with the Fiji DST (Pacific/Fiji), predicted to happen on Oct 26, at 3am. It looks like the Fiji government haven't yet decided on whether to have DST this year, or not. And in that case, on what date it will start. There was recently elections here, and it seems like the Fiji government haven't prioritised any decisions around DST. Taking this into consideration, and also the fact that this future, predicted date was introduced by the TZDB, would it be possible to get a tzdata version, where the DST for 2014 is removed? *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) 331 0201 *| *_ken.rylander(a)digicelgroup.com <mailto:ken.rylander@digicelgroup.com>_*| **www.digicelpacific.com <http://www.digicelpacific.com/>*

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Fiji DST, starts 2nd November
by "" Oct. 20, 2014

Oct. 20, 2014

DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-NOVEMBER-2ND.aspx <http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-O…>

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more changes (and a bug fix)
by christos＠zoulas.com Oct. 19, 2014

Oct. 19, 2014

Hi, Most of these changes make sure that errno is always set appropriately when the time functions fail. The bug fix below that when lclptr is allocated, is not zeroed and the result from zoneinit() was not checked. If zoneinit failed, then lclptr would contain garbage, and settzname() would coredump because it assumed that the lclptr contents were sane. christos --- localtime.c.orig 2014-10-07 16:20:32.000000000 -0400 +++ localtime.c 2014-10-16 14:10:03.000000000 -0400 @@ -690,17 +690,23 @@ register char c; register int num; - if (strp == NULL || !is_digit(c = *strp)) + if (strp == NULL || !is_digit(c = *strp)) { + errno = EINVAL; return NULL; + } num = 0; do { num = num * 10 + (c - '0'); - if (num > max) + if (num > max) { + errno = ERANGE; return NULL; /* illegal value */ + } c = *++strp; } while (is_digit(c)); - if (num < min) + if (num < min) { + errno = ERANGE; return NULL; /* illegal value */ + } *nump = num; return strp; } @@ -1202,14 +1208,20 @@ ? lcl_is_set < 0 : 0 < lcl_is_set && strcmp(lcl_TZname, name) == 0) return; - if (0 < lcl) - strcpy(lcl_TZname, name); #ifdef ALL_STATE if (! lclptr) lclptr = malloc(sizeof *lclptr); #endif /* defined ALL_STATE */ - zoneinit(lclptr, name); + if (!zoneinit(lclptr, name)) { +#ifdef ALL_STATE + free(lclptr); + lclptr = NULL; +#endif + return; + } settzname(); + if (0 < lcl) + strcpy(lcl_TZname, name); lcl_is_set = lcl; } @@ -1328,8 +1340,10 @@ newt += seconds; else newt -= seconds; if (newt < sp->ats[0] || - newt > sp->ats[sp->timecnt - 1]) - return NULL; /* "cannot happen" */ + newt > sp->ats[sp->timecnt - 1]) { + errno = EINVAL; + return NULL; /* "cannot happen" */ + } result = localsub(sp, &newt, offset, tmp); if (result) { register int_fast64_t newy; @@ -1338,8 +1352,10 @@ if (t < sp->ats[0]) newy -= years; else newy += years; - if (! (INT_MIN <= newy && newy <= INT_MAX)) + if (! (INT_MIN <= newy && newy <= INT_MAX)) { + errno = EOVERFLOW; return NULL; + } result->tm_year = newy; } return result; @@ -1528,13 +1544,13 @@ tdelta = tdays / DAYSPERLYEAR; if (! ((! TYPE_SIGNED(time_t) || INT_MIN <= tdelta) && tdelta <= INT_MAX)) - return NULL; + goto overflow; idelta = tdelta; if (idelta == 0) idelta = (tdays < 0) ? -1 : 1; newy = y; if (increment_overflow(&newy, idelta)) - return NULL; + goto overflow; leapdays = leaps_thru_end_of(newy - 1) - leaps_thru_end_of(y - 1); tdays -= ((time_t) newy - y) * DAYSPERNYEAR; @@ -1563,17 +1579,17 @@ } while (idays < 0) { if (increment_overflow(&y, -1)) - return NULL; + goto overflow; idays += year_lengths[isleap(y)]; } while (idays >= year_lengths[isleap(y)]) { idays -= year_lengths[isleap(y)]; if (increment_overflow(&y, 1)) - return NULL; + goto overflow; } tmp->tm_year = y; if (increment_overflow(&tmp->tm_year, -TM_YEAR_BASE)) - return NULL; + goto overflow; tmp->tm_yday = idays; /* ** The "extra" mods below avoid overflow problems. @@ -1604,6 +1620,8 @@ tmp->TM_GMTOFF = offset; #endif /* defined TM_GMTOFF */ return tmp; +overflow: + return NULL; } char * @@ -1753,20 +1771,21 @@ if (do_norm_secs) { if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec, SECSPERMIN)) - return WRONG; + goto overflow; } if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR)) - return WRONG; + goto overflow; if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY)) - return WRONG; + goto overflow; y = yourtm.tm_year; if (normalize_overflow32(&y, &yourtm.tm_mon, MONSPERYEAR)) - return WRONG; + goto overflow; /* ** Turn y into an actual year number for now. ** It is converted back to an offset from TM_YEAR_BASE later. */ if (increment_overflow32(&y, TM_YEAR_BASE)) + goto overflow; return WRONG; while (yourtm.tm_mday <= 0) { if (increment_overflow32(&y, -1)) @@ -1792,9 +1811,9 @@ } } if (increment_overflow32(&y, -TM_YEAR_BASE)) - return WRONG; + goto overflow; if (! (INT_MIN <= y && y <= INT_MAX)) - return WRONG; + goto overflow; yourtm.tm_year = y; if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN) saved_seconds = 0; @@ -1844,17 +1863,17 @@ if (dir != 0) { if (t == lo) { if (t == time_t_max) - return WRONG; + goto overflow; ++t; ++lo; } else if (t == hi) { if (t == time_t_min) - return WRONG; + goto overflow; --t; --hi; } if (lo > hi) - return WRONG; + goto invalid; if (dir > 0) hi = t; else lo = t; @@ -1898,7 +1917,7 @@ ** gets checked. */ if (sp == NULL) - return WRONG; + goto invalid; for (i = sp->typecnt - 1; i >= 0; --i) { if (sp->ttis[i].tt_isdst != yourtm.tm_isdst) continue; @@ -1920,16 +1939,22 @@ goto label; } } - return WRONG; + goto invalid; } label: newt = t + saved_seconds; if ((newt < t) != (saved_seconds < 0)) - return WRONG; + overflow; t = newt; if (funcp(sp, &t, offset, tmp)) *okayp = true; return t; +invalid: + errno = EINVAL; + return WRONG; +overflow: + errno = EOVERFLOW; + return WRONG; } static time_t @@ -1966,6 +1991,7 @@ char seen[TZ_MAX_TYPES]; unsigned char types[TZ_MAX_TYPES]; bool okay; + int save_errno; if (tmp == NULL) { errno = EINVAL; @@ -1973,9 +1999,12 @@ } if (tmp->tm_isdst > 1) tmp->tm_isdst = 1; + save_errno = errno; t = time2(tmp, funcp, sp, offset, &okay); - if (okay) + if (okay) { + errno = save_errno; return t; + } if (tmp->tm_isdst < 0) #ifdef PCTS /* @@ -2013,8 +2042,10 @@ sp->ttis[samei].tt_gmtoff; tmp->tm_isdst = !tmp->tm_isdst; t = time2(tmp, funcp, sp, offset, &okay); - if (okay) + if (okay) { + errno = save_errno; return t; + } tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff - sp->ttis[samei].tt_gmtoff; tmp->tm_isdst = !tmp->tm_isdst;

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Canadian time zones official site link
by Matt Johnson Oct. 18, 2014

Oct. 18, 2014

The TZ source comments for Canada references the INMS, but the link there is dead. Archive.org's last copy was taken in June 2006: https://web.archive.org/web/20060710032930/http://inms-ienm.nrc-cnrc.gc.ca/… It appears that the INMS is/was a division of the NRC, and I've found the current time zone page for the NRC here: http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html The pages appear very similar. Please update the comments in the TZ source accordingly. Thanks.

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Re: [tz] Carving shapes
by Marvel, Jim (CPCOE) Oct. 17, 2014

Oct. 17, 2014

Also, how to determine borders for Zabaykalsky Krai From: Marvel, Jim (CPCOE) Sent: Thursday, October 16, 2014 11:22 AM To: 'tz(a)iana.org' Subject: Carving shapes How to determine borders for these new zones? Two zones are added: Asia/Chita (split from Asia/Yakutsk, and also with two hours subtracted) and Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour subtracted). thanks Jim Marvel

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Incorrect timezone offset with current Russian rules - tzdata or glibc bug or normal?
by Andrei Borzenkov Oct. 17, 2014

Oct. 17, 2014

I hit strange problem which looks like a bug and actually caused serious problem due to different interpretation of current timezone offset. Current tzdata correctly - as far as I can tell - defines time today as UTC-4 with summer time inactive: /etc/localtime Sat Mar 26 23:00:00 2011 UT = Sun Mar 27 03:00:00 2011 MSK isdst=0 gmtoff=14400 /etc/localtime Sat Oct 25 21:59:59 2014 UT = Sun Oct 26 01:59:59 2014 MSK isdst=0 gmtoff=14400 /etc/localtime Sat Oct 25 22:00:00 2014 UT = Sun Oct 26 01:00:00 2014 MSK isdst=0 gmtoff=10800 /etc/localtime 9223372036854689407 = NULL /etc/localtime 9223372036854775807 = NULL But the valule of variable "timezone" (man timezone(3)) is set to UTC-3 ... bor@opensuse:~/tmp/sapttzz> ./sapttz Name of local time zone: no info (=TZ) Technical description of local time zone: UTC time +10800 sec Daylight Saving Time at the current/given date is: inaktiv where offset is computed as simply printf(" UTC time %+ld sec\n",- (long int)timezone); if(tm->tm_isdst == 1) printf(" aktiv\n"); else if(tm->tm_isdst == 0) printf(" inaktiv\n"); else printf(" unknown\n"); So basically any application which tries to compute current offset from UTC as based offset (timezone) + dst offset (if isdst) will fail. Or better, two programs running on the same system may have different idea of current time. What puzzles me - if I take previous timezone before last change (before 2014f) the same program displays correct time. But visually nothing has changed ... /etc/localtime Sat Mar 26 22:59:59 2011 UT = Sun Mar 27 01:59:59 2011 MSK isdst=0 gmtoff=10800 /etc/localtime Sat Mar 26 23:00:00 2011 UT = Sun Mar 27 03:00:00 2011 MSK isdst=0 gmtoff=14400 /etc/localtime 9223372036854689407 = NULL /etc/localtime 9223372036854775807 = NULL bor@opensuse:~/tmp/sapttzz> ./sapttz Name of local time zone: no info (=TZ) Technical description of local time zone: UTC time +14400 sec Daylight Saving Time at the current/given date is: inaktiv openSUSE 13.1 with glibc-2.18-4.21.1.x86_64 Any ideas? TIA -andrei

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Utah may drop DST
by Paul Eggert Oct. 17, 2014

Oct. 17, 2014

The Utah Governor's Office of Economic Development, pursuant to a bill passed last year by the state legislature, polled citizens and held public meetings about daylight saving time. They got more than 27,000 responses, including 13,000 written comments totaling 574,000 words. The results: 67% preferred Mountain Standard Time (UTC-7) all year (like Arizona) 18% preferred daylight time (UTC-6) all year, essentially Central Standard Time 15% liked the current spring-forward/fall-back system The main argument of the majority was convenience. The tourism and recreation industries prefer daylight saving, though, and will lobby against switching to MST all year if (as seems likely) an MST bill is introduced in the legislature. My source: Davidson L. Something new under the sun: Utah may dump daylight saving time. Salt Lake Tribune 2014-10-15 http://www.sltrib.com/sltrib/politics/58526154-90/daylight-saving-malley-ut…

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zone.tab deprecation
by Matt Johnson Oct. 16, 2014

Oct. 16, 2014

I understand the differences between zone.tab and zone1970.tab, but why does zone.tab have to be deprecated? Can't we just maintain both files indefinitely? Then developers can choose whichever file makes sense for their scenario. Is there a specific reason for the deprecation? If it is to be dropped at some point - how far out is that, and does it get maintained until then?

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Carving shapes
by Marvel, Jim (CPCOE) Oct. 16, 2014

Oct. 16, 2014

How to determine borders for these new zones? Two zones are added: Asia/Chita (split from Asia/Yakutsk, and also with two hours subtracted) and Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour subtracted). thanks Jim Marvel

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