July 2018 - tz - lists.iana.org

Re: [tz] Celinograd (Astana)
by Paul Eggert July 20, 2018

July 20, 2018

Marat Nigametzianov wrote: > https://ru.m.wikipedia.org/wiki/Время_в_Казахстане Generally we prefer primary sources, as Wikipedia is less reliable (anybody can edit it). > And this is link to order from 1956 about timezone in USSR > http://astro.uni-altai.ru/~orion/blog/2011/11/novyie-granitsyi-chasovyih-po… Thanks, that source should be quite helpful. Proposed patch attached. This is to commentary only. > Where is a two part of kazahstan and celinograd (astana) is in eastern part > of it, so it always have to be +6 Currently Astana is covered by Asia/Almaty, which already says that the region was at UT +06 from 1930-06-21 until 1981-04-01. So I'm afraid that I don't see why a change to tzdata is needed (other than to commentary).

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Getting current tzdb version in use
by Paul Eggert July 20, 2018

July 20, 2018

On 07/19/2018 08:50 AM, lester(a)lsces.co.uk wrote: > The bottom line is that currently we have no way of knowing just what data is > being supplied. Even if the data matches the raw tz version, it may or may not > include the pre-1970 <tel:1970> data archived to backzone. Yes, and this is partly why I have resisted putting version information into the installed files. Version info is typically not available unless you've merely cloned the development Git repository and have made no change to the data or to the 'make' parameters that select or alter the data, a situation that is reasonably rare in practice. It would take quite a bit of effort to get reliable version information in real installations, and nobody knows exactly what would be entailed in that effort. Since many people have requested version info I had compromised by putting a version string into tzdata.zi as a sort of experiment. The experiment has clearly failed so far. That being said, we can improve things a bit by putting into tzdata.zi information about whether the file 'backward' was used, as well as whether the (dicey) file 'backzone' and the (obsolete) file 'pacificnew' were used. We can also record whether the rearguard (or vanguard) data format was selected. Proposed patch attached. Harold, if you're changing your C++ library to look for "unknown", this patch might append some stuff to that "unknown" string.

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rearguard
by Lord Buddha July 18, 2018

July 18, 2018

This would be so much easier (for me;) ) if all data forms were published by IANA. $ awk -v DATAFORM=vanguard -f ziguard.awk africa antarctica asia australasia europe northamerica southamerica etcetera systemv factory backward *malloc(): memory corruptionAborted (core dumped)* On Ubuntu 18.04 trying to get files in rearguard format so I can patch Java & JodaTime.... Need to patch as we need the Fiji change now.

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[PATCH] Give title lines to many files lacking them
by Paul Eggert July 16, 2018

July 16, 2018

--- Makefile | 2 ++ africa | 2 ++ antarctica | 2 ++ asia | 2 ++ australasia | 2 ++ backward | 2 ++ difftime.c | 2 ++ etcetera | 2 ++ europe | 2 ++ factory | 2 ++ localtime.c | 2 ++ newstrftime.3 | 2 ++ northamerica | 2 ++ pacificnew | 2 ++ private.h | 2 ++ southamerica | 2 ++ systemv | 2 ++ tzfile.h | 2 ++ tzselect.ksh | 5 ++--- workman.sh | 1 + yearistype.sh | 1 + zdump.c | 2 ++ zic.c | 2 ++ zoneinfo2tdf.pl | 1 + 24 files changed, 45 insertions(+), 3 deletions(-) diff --git a/Makefile b/Makefile index 9e3b8f9..d01bb9a 100644 --- a/Makefile +++ b/Makefile @@ -1,3 +1,5 @@ +# Make and install tzdb code and data. + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/africa b/africa index eb7f8ae..131330e 100644 --- a/africa +++ b/africa @@ -1,3 +1,5 @@ +# tzdb data for Africa and environs + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/antarctica b/antarctica index 866cf4f..1dd9b00 100644 --- a/antarctica +++ b/antarctica @@ -1,3 +1,5 @@ +# tzdb data for Antarctica and environs + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/asia b/asia index 810ef47..7166380 100644 --- a/asia +++ b/asia @@ -1,3 +1,5 @@ +# tzdb data for Asia and environs + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/australasia b/australasia index 938c591..87ba620 100644 --- a/australasia +++ b/australasia @@ -1,3 +1,5 @@ +# tzdb data for Australasia and environs, and for much of the Pacific + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/backward b/backward index a455044..51e10f4 100644 --- a/backward +++ b/backward @@ -1,3 +1,5 @@ +# tzdb links for backward compatibility + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/difftime.c b/difftime.c index 856234a..7b96927 100644 --- a/difftime.c +++ b/difftime.c @@ -1,3 +1,5 @@ +/* Return the difference between two timestamps. */ + /* ** This file is in the public domain, so clarified as of ** 1996-06-05 by Arthur David Olson. diff --git a/etcetera b/etcetera index 1a59630..91ded93 100644 --- a/etcetera +++ b/etcetera @@ -1,3 +1,5 @@ +# tzdb data for ships at sea and other miscellany + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/europe b/europe index 8a8f8f9..a5feb59 100644 --- a/europe +++ b/europe @@ -1,3 +1,5 @@ +# tzdb data for Europe and environs + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/factory b/factory index 5f0573d..d4e7659 100644 --- a/factory +++ b/factory @@ -1,3 +1,5 @@ +# tzdb data for noncommittal factory settings + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/localtime.c b/localtime.c index b217865..6b45254 100644 --- a/localtime.c +++ b/localtime.c @@ -1,3 +1,5 @@ +/* Convert timestamp from time_t to struct tm. */ + /* ** This file is in the public domain, so clarified as of ** 1996-06-05 by Arthur David Olson. diff --git a/newstrftime.3 b/newstrftime.3 index 1fd80df..eee503e 100644 --- a/newstrftime.3 +++ b/newstrftime.3 @@ -1,3 +1,5 @@ +.\" strftime man page +.\" .\" Based on the UCB file whose corrected copyright information appears below. .\" Copyright 1989, 1991 The Regents of the University of California. .\" All rights reserved. diff --git a/northamerica b/northamerica index 06db1a8..ffbda74 100644 --- a/northamerica +++ b/northamerica @@ -1,3 +1,5 @@ +# tzdb data for North and Central America and environs + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/pacificnew b/pacificnew index 7349434..0e6cf07 100644 --- a/pacificnew +++ b/pacificnew @@ -1,3 +1,5 @@ +# tzdb data for proposed US election time (this file is obsolete) + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/private.h b/private.h index 641f905..1ead147 100644 --- a/private.h +++ b/private.h @@ -1,3 +1,5 @@ +/* Private header for tzdb code. */ + #ifndef PRIVATE_H #define PRIVATE_H diff --git a/southamerica b/southamerica index aab355c..67562f2 100644 --- a/southamerica +++ b/southamerica @@ -1,3 +1,5 @@ +# tzdb data for South America and environs + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/systemv b/systemv index d9e2995..24c8f64 100644 --- a/systemv +++ b/systemv @@ -1,3 +1,5 @@ +# tzdb data for System V rules (this file is obsolete) + # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/tzfile.h b/tzfile.h index f7f5caf..27a38cc 100644 --- a/tzfile.h +++ b/tzfile.h @@ -1,3 +1,5 @@ +/* Layout and location of TZif files. */ + #ifndef TZFILE_H #define TZFILE_H diff --git a/tzselect.ksh b/tzselect.ksh index f7d8154..18fce27 100644 --- a/tzselect.ksh +++ b/tzselect.ksh @@ -1,12 +1,11 @@ #!/bin/bash +# Ask the user about the time zone, and output the resulting TZ value to stdout. +# Interact with the user via stderr and stdin. PKGVERSION='(tzcode) ' TZVERSION=see_Makefile REPORT_BUGS_TO=tz(a)iana.org -# Ask the user about the time zone, and output the resulting TZ value to stdout. -# Interact with the user via stderr and stdin. - # Contributed by Paul Eggert. This file is in the public domain. # Porting notes: diff --git a/workman.sh b/workman.sh index 4b3b64a..8fb18a4 100644 --- a/workman.sh +++ b/workman.sh @@ -1,4 +1,5 @@ #! /bin/sh +# Convert manual page troff stdin to formatted .txt stdout. # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. diff --git a/yearistype.sh b/yearistype.sh index dfdcdf0..d674175 100644 --- a/yearistype.sh +++ b/yearistype.sh @@ -1,4 +1,5 @@ #! /bin/sh +: 'Determine whether year is of appropriate type (this file is obsolete).' : 'This file is in the public domain, so clarified as of' : '2006-07-17 by Arthur David Olson.' diff --git a/zdump.c b/zdump.c index 4c61f58..608f288 100644 --- a/zdump.c +++ b/zdump.c @@ -1,3 +1,5 @@ +/* Dump time zone data in a textual format. */ + /* ** This file is in the public domain, so clarified as of ** 2009-05-17 by Arthur David Olson. diff --git a/zic.c b/zic.c index 88153db..9d455b5 100644 --- a/zic.c +++ b/zic.c @@ -1,3 +1,5 @@ +/* Compile .zi time zone data into TZif binary files. */ + /* ** This file is in the public domain, so clarified as of ** 2006-07-17 by Arthur David Olson. diff --git a/zoneinfo2tdf.pl b/zoneinfo2tdf.pl index e05ec01..c8c5591 100755 --- a/zoneinfo2tdf.pl +++ b/zoneinfo2tdf.pl @@ -1,4 +1,5 @@ #! /usr/bin/perl -w +# Summarize .zi input in a .zi-like format. # Courtesy Ken Pizzini. -- 2.7.4

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Celinograd (Astana)
by Marat Nigametzianov July 16, 2018

July 16, 2018

Celinograd (Astana) in 1969 must be +6 UTC not +5 https://www.worldtimezone.com/dst_news/dst_news_ussr-map-1970.html -- Nigametzianov Marat ____________________________________________________________________________ 8 926 568-93-08, ppmarat(a)gmail.com

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Fiji DST 2018/19
by Raymond Kumar July 15, 2018

July 15, 2018

Hi Paul, There is a DST time change in Fiji island from November 4th. http://www.fijitimes.com/government-approves-2018-daylight-saving/ The attached order states: Members of the public are advised to move their clocks one hour ahead at 2am on Sunday November 4. The daylight saving period will end at 3am on Sunday January 13, 2019. Fiji rules in tzdata2018e.tar.gz: There is a need to change the NON DST time from 14th Jan to 13th Jan. Can a new tzdata be generated for Fiji Islands. Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 - Rule Fiji 2015 max - Jan Sun>=14 3:00 0 - Thanks, Raymond Kumar Head of Billing & Products +679-7015315 ________________________________ 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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Re: [tz] EU Public Consultation on summertime arrangements
by Pierpaolo Bernardi July 11, 2018

July 11, 2018

Not time related. Only for pedantry sake: at the border between San Marino and Italy there *are* controls, by the Italian police. This is due to different tax laws in the two countries, which would make shopping in San Marino very convenient for Italy residents, if they weren't controlled when exiting from RSM for any good bought in RSM, and forced to pay due taxes. FWIW Il giorno 11 luglio 2018, alle ore 09:08, John Wilcock <john(a)tradoc.fr> ha scritto: Le 11/07/2018 à 00:05, Brian Inglis a écrit : > Most people are probably not that aware of European geography [...] Taking the world as a whole, you are no doubt correct, but most of the people at the EU who will be reading Paul's submission will be perfectly aware of European geography! >> I don't see the relevance of "Schengen area" - all current and potential >> Schengen area countries are either EU or EEA/EFTA members. > The Schengen Area also includes non-EU/EEA/EFTA countries Monaco, San Marino, > and the Vatican, which have not signed the Schengen agreement, but have no > borders, so are de facto included. While these three countries are indeed de facto within the Schengen area due to the lack of border *controls* — they do still have borders ;-) — it still seems (at least to me as a European) very odd to mention Schengen purely in order to include its *non*-signatories, especially as the next item in the list is in any case the all-inclusive "other countries not in the EU". -- John

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(no subject)
by Ashish Ahmed July 10, 2018

July 10, 2018

Confirm

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tz-art suggestion
by Steve Jones July 6, 2018

July 6, 2018

Not sure how this was missed, having passed its third birthday, but probably deserves a mention in tz-art: "Daylight Saving Time: How is this still a thing?" https://www.youtube.com/watch?v=br0NW9ufUUw Regards, Steve Jones [image: Emacs!]

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strftime and nonnormalized dates/times
by scs＠eskimo.com July 5, 2018

July 5, 2018

I have a question about the strftime function. This is not related to time zones per se, but there are a lot of date/time programming experts here, and of course there's a reference implementation of strftime in tzcode. [Full disclosure: I am posting the same question to StackOverflow: https://stackoverflow.com/questions/51145727/ .] Most definitions of the %H, %M, and %S specifiers (including those in the ANSI/ISO C Standards) contain language like %H is replaced by the hour (24-hour clock) as a decimal number (00-23). Now, that little notation "(00-23)" at the end tells you the range of numbers you're going to see *if the struct tm you're printing was just created by localtime or gmtime*. My question concerns the presence or absence of a requirement that the struct tm being referenced by strftime *must* have been one just generated by localtime or gmtime. I don't think there's such a requirement, but if there isn't, those notations "(00-23)" and "(00-59)" don't really have any normative implications for strftime -- they're more of a misplaced requirement on the values generated by localtime and gmtime. But if strftime doesn't restrict the ranges of the various struct tm fields to their "normal" values, it makes me wonder how much latitude a push-the-boundaries programmer actually has when calling strftime. Are the values as unlimited as they are when calling, say, mktime? To make the question more concrete, it came to me when I found myself writing this code: time_t dt = t2 - t1; struct tm *tmp = gmtime(&dt); if(dt > 86400) tmp->tm_hour += dt / 86400 * 24; strftime(etbuf, sizeof(etbuf), "elapsed: %H:%M:%S", tmp); That is, I'm subtracting two times, and letting gmtime and strftime convert the difference to HH:MM:SS format for me. But if the time delta was more than a day, I'm not printing it as days; I'm just lumping it in with the hours (which, it's true, might end up being a very large number if there were months or years between t1 and t2). So, language lawyer question: Is this legal and portable? When calling strftime, are tm_hour, tm_min, and the rest limited to their normal ranges, or not? (Yes, I've tried it, and nonnormalized values work -- not at all surprisingly -- as expected under the popular implementations, but that's not the question.)

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