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zic changes (1/2)
by Arthur David Olson May 1, 2014

May 1, 2014

A possibility mentioned last year at the time of the Macquarie fix: here's a more general fix for zic.c. For clarity, it comes in two pieces. This first piece simply rolls back the Macquarie-specific changes to zic.c; it's both attached and appears in mangled form below. These changes are relative to the git repository version. @dashdashado 1.1 2838 lines 1.2 2805 lines *** /tmp/,azic.c 2014-05-01 01:51:26.531315400 -0400 --- /tmp/,bzic.c 2014-05-01 01:51:26.640515600 -0400 *************** *** 1480,1490 **** fromi = 0; while (fromi < timecnt && attypes[fromi].at < min_time) ++fromi; ! /* ! ** Remember that type 0 is reserved. ! */ ! if (isdsts[1] == 0) ! while (fromi < timecnt && attypes[fromi].type == 1) ++fromi; /* handled by default rule */ for ( ; fromi < timecnt; ++fromi) { if (toi != 0 && ((attypes[fromi].at + --- 1480,1487 ---- fromi = 0; while (fromi < timecnt && attypes[fromi].at < min_time) ++fromi; ! if (isdsts[0] == 0) ! while (fromi < timecnt && attypes[fromi].type == 0) ++fromi; /* handled by default rule */ for ( ; fromi < timecnt; ++fromi) { if (toi != 0 && ((attypes[fromi].at + *************** *** 1589,1599 **** } thistimelim = thistimei + thistimecnt; thisleaplim = thisleapi + thisleapcnt; ! /* ! ** Remember that type 0 is reserved. ! */ ! writetype[0] = FALSE; ! for (i = 1; i < typecnt; ++i) writetype[i] = thistimecnt == timecnt; if (thistimecnt == 0) { /* --- 1586,1592 ---- } thistimelim = thistimei + thistimecnt; thisleaplim = thisleapi + thisleapcnt; ! for (i = 0; i < typecnt; ++i) writetype[i] = thistimecnt == timecnt; if (thistimecnt == 0) { /* *************** *** 1609,1619 **** /* ** For America/Godthab and Antarctica/Palmer */ - /* - ** Remember that type 0 is reserved. - */ if (thistimei == 0) ! writetype[1] = TRUE; } #ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH /* --- 1602,1609 ---- /* ** For America/Godthab and Antarctica/Palmer */ if (thistimei == 0) ! writetype[0] = TRUE; } #ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH /* *************** *** 1663,1688 **** } #endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */ thistypecnt = 0; - /* - ** Potentially, set type 0 to that of lowest-valued time. - */ - if (thistimei > 0) { - for (i = 1; i < typecnt; ++i) - if (writetype[i] && !isdsts[i]) - break; - if (i != types[thistimei - 1]) { - i = types[thistimei - 1]; - gmtoffs[0] = gmtoffs[i]; - isdsts[0] = isdsts[i]; - ttisstds[0] = ttisstds[i]; - ttisgmts[0] = ttisgmts[i]; - abbrinds[0] = abbrinds[i]; - writetype[0] = TRUE; - writetype[i] = FALSE; - } - } for (i = 0; i < typecnt; ++i) ! typemap[i] = writetype[i] ? thistypecnt++ : 0; for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i) indmap[i] = -1; thischarcnt = 0; --- 1653,1660 ---- } #endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */ thistypecnt = 0; for (i = 0; i < typecnt; ++i) ! typemap[i] = writetype[i] ? thistypecnt++ : -1; for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i) indmap[i] = -1; thischarcnt = 0; *************** *** 2105,2115 **** updateminmax(leapminyear); updateminmax(leapmaxyear + (leapmaxyear < ZIC_MAX)); } - /* - ** Reserve type 0. - */ - gmtoffs[0] = isdsts[0] = ttisstds[0] = ttisgmts[0] = abbrinds[0] = -1; - typecnt = 1; for (i = 0; i < zonecount; ++i) { zp = &zpfirst[i]; if (i < zonecount - 1) --- 2077,2082 ----

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re : Time zones in Ukraine
by Nickolay Olshevsky April 19, 2014

April 19, 2014

Thank you guys for prompt answer, now I got it. Will at least go and read what was that Rutenia :) The another idea would be to keep somewhere list of active timezones along with tz database, but I understand that it would be almost impossible to add corresponding APIs everywhere. -- Best regards, Nickolay Olshevsky

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Tennessee time (was Web sites using recent versions of the tz database)
by Arthur David Olson April 15, 2014

April 15, 2014

On Wed, Feb 19, 2014 at 7:49 PM, Zoidsoft <zoidsoft(a)gmail.com> wrote: > Tennessee has proposed permanent daylight time: > > > http://www.chattanoogan.com/2014/2/18/269932/Legislation-Making-Daylight-Sa… > If this moves forward at the state level, things could get interesting. The US Uniform Time Act lets states choose whether or not to make the DST switch, but may not allow for permanent DST (which would, in effect, be a time zone switch). "Full text - Daylight Saving Time - United States Law - 15 USC 6(IX)(260-7)" http://www.webexhibits.org/daylightsaving/usc.html A reminder: I am not a lawyer. @dashdashado

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Time zones in Ukraine
by Nickolay Olshevsky April 15, 2014

April 15, 2014

Hi. I am aware about tz database for a while, and today, during FreeBSD installation found out that it still propose ancient and non-usable zones like Ruthenia, Zaporozhye or Crimea for time zone in Ukraine, while for last years only one time zone exists at the whole Ukraine area (except Crimea for now). So, it would be nice to remove all of them except Ukraine/Kyiv, or is this not possible due to historical reasons (to keep history of all those time zones)? Also, the other issue is that in Ukrainian language correct spelling is Kyiv, not Kiev (russian pronunciation). It would be quite logical to change default zone to Europe/Kyiv. Thanks. -- Best regards, Nickolay Olshevsky

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US feds & Y2K
by Arthur David Olson April 11, 2014

April 11, 2014

In line with this morning's proposed 1998 change: "The Defense Department, General Services Administration and NASA are proposing that a 1997 [Y2K] acquisition rule--and all related clauses--be deleted from federal regulations." http://www.bizjournals.com/washington/blog/fedbiz_daily/2014/03/its-2014-is… @dashdashado

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tiscal url not working
by Osko, Galatea April 4, 2014

April 4, 2014

Hi all, http://home.tiscali.nl/~t876506/TZworld.html#sam Can you please advise on the replacing link for time zones? Thank you! Galatea Osko Morgan Stanley | Enterprise Data & Services Lechner Odon fasor 8 | Floor 07 Budapest, 1095 Phone: +36 1 881-3530 Galatea.Osko(a)morganstanley.com<mailto:Galatea.Osko@morganstanley.com> Be carbon conscious. Please consider our environment before printing this email. ________________________________ NOTICE: Morgan Stanley is not acting as a municipal advisor and the opinions or views contained herein are not intended to be, and do not constitute, advice within the meaning of Section 975 of the Dodd-Frank Wall Street Reform and Consumer Protection Act. If you have received this communication in error, please destroy all electronic and paper copies and notify the sender immediately. Mistransmission is not intended to waive confidentiality or privilege. Morgan Stanley reserves the right, to the extent permitted under applicable law, to monitor electronic communications. This message is subject to terms available at the following link: http://www.morganstanley.com/disclaimers If you cannot access these links, please notify us by reply message and we will send the contents to you. By messaging with Morgan Stanley you consent to the foregoing.

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GMT Abolished
by Matt Johnson April 1, 2014

April 1, 2014

http://www.timeanddate.com/news/time/paris-meridian-gmt-obsolete.html Happy April 1st. ;-)

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zdump convenience options
by Arthur David Olson April 1, 2014

April 1, 2014

Attached are changes for two zdump convenience options; they also appear in mangled form below. @dashdashado diff -rc tz2014braw/zdump.8 tz2014bredone/zdump.8 *** tz2014braw/zdump.8 2014-03-26 16:33:56.432625200 -0400 --- tz2014bredone/zdump.8 2014-03-26 16:35:28.051586100 -0400 *************** *** 13,19 **** .B \-c [loyear,]hiyear ] [ .B \-t ! [lotime,]hitime ] [ zonename ... ] .SH DESCRIPTION .I Zdump prints the current time in each --- 13,23 ---- .B \-c [loyear,]hiyear ] [ .B \-t ! [lotime,]hitime ] [ ! .B \-\-pre ! ] [ ! .B \-\-ado ! ] [ zonename ... ] .SH DESCRIPTION .I Zdump prints the current time in each *************** *** 56,61 **** --- 60,71 ---- .BI "\-t " [lotime,]hitime Cut off verbose output at the start of the given time(s), given in decimal seconds since 1970-01-01 00:00:00 UTC. + .TP + .BI "\-\-pre" + Limit output to pre-A.D. only; equivalent to \-Vc\-1 + .TP + .BI "\-\-ado" + Limit output to A.D. only; equivalent to \-Vc1,2500 .SH LIMITATIONS Time discontinuities are found by sampling the results returned by localtime at twelve-hour intervals. diff -rc tz2014braw/zdump.c tz2014bredone/zdump.c *** tz2014braw/zdump.c 2014-03-26 16:33:56.432625200 -0400 --- tz2014bredone/zdump.c 2014-03-26 16:37:38.748615700 -0400 *************** *** 304,310 **** usage(FILE * const stream, const int status) { (void) fprintf(stream, ! _("%s: usage: %s [--version] [--help] [-{vV}] [-{ct} [lo,]hi] zonename ...\n" "\n" "Report bugs to %s.\n"), progname, progname, REPORT_BUGS_TO); --- 304,310 ---- usage(FILE * const stream, const int status) { (void) fprintf(stream, ! _("%s: usage: %s [--version] [--help] [--pre] [--ado] [-{vV}] [-{ct} [lo,]hi] zonename ...\n" "\n" "Report bugs to %s.\n"), progname, progname, REPORT_BUGS_TO); *************** *** 346,351 **** --- 346,355 ---- exit(EXIT_SUCCESS); } else if (strcmp(argv[i], "--help") == 0) { usage(stdout, EXIT_SUCCESS); + } else if (strcmp(argv[i], "--pre") == 0) { + argv[i] = "-Vc-1"; + } else if (strcmp(argv[i], "--ado") == 0) { + argv[i] = "-Vc1,2500", } vflag = Vflag = 0; cutarg = cuttimes = NULL;

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Missing link to America/Montreal
by Paul_Koning＠Dell.com April 1, 2014

April 1, 2014

Apologies for not catching this sooner: In 2013, between 2013e and 2013i, America/Montreal was eliminated. But there is not, as is usually done, a link in the “backward” file. Some others I looked at, like Antarctica/South_Pole, did get an entry in backward. Is the an oversight or was it intentional? paul

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DST on neolithic clocks
by Zefram April 1, 2014

April 1, 2014

http://www.ntsouthwest.co.uk/2014/04/putting-the-clock-forward-at-avebury-s… "Obviously Stone Age man didn't have daylight saving, so twice a year we have to move one of the stones." said Hilary Makins, National Trust Head Ranger. -zefram

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