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2020c zic code draws complaints from Coverity
by Tom Lane Oct. 18, 2020

Oct. 18, 2020

The Coverity static-analysis tool [1], which is moderately widely used by open-source projects, doesn't much like this: 789 if (bloat == 0) >>> CID 1468262: Incorrect expression (CONSTANT_EXPRESSION_RESULT) >>> "strcmp("slim", "slim")" is always 0 because ""slim"" is compared against itself. 790 bloat = strcmp(ZIC_BLOAT_DEFAULT, "slim") == 0 ? -1 : 1; This is just a bug-finding heuristic, of course, and it won't trouble me that much to ignore the warning. Still, I wonder why it's coded this way and not like, say, #ifndef ZIC_BLOAT_DEFAULT /* Use -1 for slim, +1 for fat */ #define ZIC_BLOAT_DEFAULT (-1) #endif ... if (bloat == 0) bloat = ZIC_BLOAT_DEFAULT; The use of a string doesn't seem to be buying anything in terms of error protection, since the strcmp doesn't distinguish "fat" from "slem" or other misspellings. regards, tom lane [1] https://www.synopsys.com/software-integrity/security-testing/static-analysi…

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[PATCH] tz-link.html: update Oracle Java tzupdater README URL
by Brian Inglis Oct. 18, 2020

Oct. 18, 2020

Oracle Java tzupdater README URL in tz-link.html has been changed and is currently being redirected; update it in case that does not continue: $ curl -I https://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html HTTP/2 301 server: Oracle-HTTP-Server location: https://www.oracle.com/java/technologies/javase/tzupdater-readme.html ... --- tz-link.html | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tz-link.html b/tz-link.html index 606a83b9..c8c4e82c 100644 --- a/tz-link.html +++ b/tz-link.html @@ -247,7 +247,7 @@ href="http://userguide.icu-project.org/datetime/timezone"><abbr title="International Components for Unicode">ICU</abbr></a>, <a href="https://developer.ibm.com/javasdk/support/dst/jtzu/"><abbr>IBM</abbr></a> and <a -href="https://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html">Oracle</a> +href="https://www.oracle.com/java/technologies/javase/tzupdater-readme.html">Oracle</a> Java, <a href="https://www.joda.org/joda-time/tz_update.html">Joda-Time</a>, <a href="https://dev.mysql.com/doc/refman/en/time-zone-support.html">MySQL</a>, and <a @@ -436,7 +436,7 @@ freely available under the <abbr>MIT</abbr> license.</li> <li>Java-based compilers and libraries include: <ul> <li>The <a -href="https://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html">TZUpdater +href="https://www.oracle.com/java/technologies/javase/tzupdater-readme.html">TZUpdater tool</a> compiles <code><abbr>tz</abbr></code> source into the format used by Oracle Java.</li> <li>The <a -- 2.28.0

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[PROPOSED 1/2] Update Danish URLs
by Paul Eggert Oct. 18, 2020

Oct. 18, 2020

* europe: Update Danish URLs since the old ones no longer work. No need to refer to the now-vanished page of poe (Peter Øhrstrøm) since it was a secondary source anyway. --- europe | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/europe b/europe index af6c628..ea23736 100644 --- a/europe +++ b/europe @@ -1029,17 +1029,16 @@ Zone Europe/Prague 0:57:44 - LMT 1850 # Denmark, Faroe Islands, and Greenland # From Jesper Nørgaard Welen (2005-04-26): -# http://www.hum.aau.dk/~poe/tid/tine/DanskTid.htm says that the law -# [introducing standard time] was in effect from 1894-01-01.... -# The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL +# the law [introducing standard time] was in effect from 1894-01-01.... +# The page https://www.retsinformation.dk/eli/lta/1893/83 # confirms this, and states that the law was put forth 1893-03-29. # # The EU [actually, EEC and Euratom] treaty with effect from 1973: -# http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL +# https://www.retsinformation.dk/eli/lta/1972/21100 # # This provoked a new law from 1974 to make possible summer time changes # in subsequent decrees with the law -# http://www.retsinfo.dk/_GETDOCI_/ACCN/A19740022330-REGL +# https://www.retsinformation.dk/eli/lta/1974/223 # # It seems however that no decree was set forward until 1980. I have # not found any decree, but in another related law, the effecting DST @@ -1051,7 +1050,7 @@ Zone Europe/Prague 0:57:44 - LMT 1850 # The law is about the management of the extra hour, concerning # working hours reported and effect on obligatory-rest rules (which # was suspended on that night): -# http://www.retsinfo.dk/_GETDOCI_/ACCN/C19801120554-REGL +# https://web.archive.org/web/20140104053304/https://www.retsinformation.dk/F… # From Jesper Nørgaard Welen (2005-06-11): # The Herning Folkeblad (1980-09-26) reported that the night between -- 2.25.1

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Fiji Daylight Saving Time 2020-2021
by Jashneel Kumar Oct. 16, 2020

Oct. 16, 2020

Dear Support, Please note that Fiji Daylight saving Time has been confirmed as follows: DST Start : Sunday, 20 December 2020, 02:00:00 clocks will be turned forward 1 hour to Sunday, 20 December 2020, 03:00:00 local standard time instead. DST End: Sunday, 17 January 2021, 03:00:00 clocks are turned backward 1 hour to Sunday, 17 January 2021, 02:00:00 local standard time instead. Looking forward to your support to reflect the same in the tz database. Regards, Jashneel Kumar Manager Data Networks & Services Mobile: +679 999 8456 Vodafone Fiji PTE Limited 168 Princess Rd, Tamavua Suva Fiji [Vodafone] ________________________________ The content of this email including any attachments is confidential and may contain information that is proprietary and privileged. If you are not the intended recipient be advised that you have received this email in error and that any use, dissemination, forwarding, printing or copying of this email is strictly prohibited. If you have received this email in error please notify E-mail Administrator on info(a)vodafone.com.fj Please also destroy and delete this message from your system. Vodafone Fiji PTE Limited does not guarantee that this message is free from computer virus or any other defect. The reader accepts full responsibility for taking defensive and counteractive action needed to rectify the computer virus or other defects caused. Vodafone Fiji PTE Limited : Private Mail Bag, Suva, Fiji | Telephone : +679 3312000 | E-Mail : info(a)vodafone.com.fj Please consider your environmental responsibility before printing this e-mail [X] Vodafone Fiji PTE Ltd <https://www.vodafone.com.fj/>

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2020b not updating with java
by Mike Cullinan Oct. 16, 2020

Oct. 16, 2020

I know this is out of the IANA scope but hoping someone listening can help get the tzupdater tool working again. $ ./openjdk/jdk-15.jdk/Contents/Home/bin/java --version openjdk 15 2020-09-15 OpenJDK Runtime Environment (build 15+35-1559) OpenJDK 64-Bit Server VM (build 15+35-1559, mixed mode, sharing) $ $ ./openjdk/jdk-15.jdk/Contents/Home/bin/java -jar tzupdater.jar -l Using https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz as source for tzdata bundle. Source directory does not contain source file: pacificnew

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Patch for ziguard.awk
by Neil Fuller Oct. 15, 2020

Oct. 15, 2020

I discovered that the ziguard.awk is not entirely reversible: it doesn't switch between vanguard and rearguard data for Namibia data completely in all cases. Attached is a patch with some more explanation and a proposed fix. It's bigger than strictly necessary because I tidied up the Ireland lines rather than applying the same fix there. Low severity / impact and probably not an issue in the normal release workflow : I discovered it because I was stumbling around generating my own tarballs for testing the proposed 2020b changes. That's not something I usually do. As always, thanks for all the work you do. Neil. -- Google UK Limited Registered Office: 6 Pancras Square, London, N1C 4AG Registered in England Number: 3977902

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Ireland considering staying with summer time
by Kevin Lyda Oct. 15, 2020

Oct. 15, 2020

It seems unlikely, but there have been suggestions in Ireland to stay with summer time this year to deal with COVID-19. It's at the tail end of this story: https://www.irishtimes.com/news/health/coronavirus-tighter-restrictions-mul… Out of interest, would a release to support such a change be possible? Kevin

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Re: [tz] Indian Continent
by Guy Harris Oct. 12, 2020

Oct. 12, 2020

On Mon, Oct 12, 2020 at 12:16 PM Bharat Adur <bharatadur(a)gmail.com> wrote: > We find for India there is certain bias taken by some individuals in a country which has such a large population and its Indian Standard Time (IST UT= 5hours 30 minutes), which is accepted by National Physical Laboratory (NPL),New Delhi and Astronomical Society of India. ...and which is the time for the tzdb region with the ID "Asia/Kolkata" - 5 hours 30 minutes ahead of UTC, abbreviation "IST". So the tzdb *does*, in fact, support Indian Standard Time, using the tzdb ID "Asia/Kolkata". > our norm of 1970 cannot be acceptable to Modern India The only "norm" of 1970 is that the tzdb doesn't create new zones for regions that differ *before* 1970. If something changes *after* 1970, we'll add a new zone if necessary. It doesn't mean that the tzdb is inherently out-of-date, with nothing that happened *after* 1970 being supported. > hence its our humble request you to consider IST UT= 5hours 30 minutes. We already considered it and support it, with the tzdb ID "Asia/Kolkata". > and if you desire we can send you at least 50 cities. There are several significant cities in the United States Pacific Time Zone; however, the tzdb has only one entry for that zone, with the ID "America/Los_Angeles". There is no entry with the ID "America/San_Francisco"; even though I live closer to San Francisco than to Los Angeles, this is not a problem for me. There also aren't any entries with the ID "America/San_Diego", "America/Portland", "America/Seattle", etc.. The tzdb does *not* create multiple entries for a given zone so that every city in that zone appears in a tzdb ID for a zone. A good time zone selector will allow the user to specify a city name and will look up the tzdb ID appropriate for that zone, e.g. for Bangalore/Bengaluru, Delhi, Mumbai, etc., it will select Asia/Kolkata.

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Re: [tz] Indian Continent
by Jonathan Leffler Oct. 12, 2020

Oct. 12, 2020

Thank you for your response. I note that your message didn't go to the tz(a)iana.org mailing list. I've copied the list again with this message. I have no official status on the team that maintains TZDB; I'm merely an interested observer. Therefore, anything I say can be overridden by that team. But I believe I'm following the "party line" on the topic. I'm not clear what your response is claiming. Are there 50 different sets of rules for different cities in India for changes in time zone since 1970? Unless there are different time zone rules for different areas of India, one entry does for all of India. Whether I like it or not (and I don't), America/Los_Angeles is the official name for the time zone in all of California, even the bits that would rather Los Angeles didn't exist. To have the remotest chance of success, you will need to persuade those who maintain the TZDB that there are different time rules for different parts of India since 1970-01-01. You can look through the mailing list archives to see other people's request for similar changes that have been denied for similar reasons. Occam's Razor (https://en.wikipedia.org/wiki/Occam%27s_razor) comes into effect: Entia Non Sunt Multiplicanda Praeter Necessitatum (Do not multiply entities unless necessary). Adding more city names would be multiplying entities without good reason. If you wish to create historical information for different time zones in India before 1970-01-01, then you may have some luck, but you'd need to provide the data, with references to official or authoritative sources of information about the different time zones. But that becomes more specialized — it might not make it into the main TZDB distribution because the time zones within India have not diverged by location for the last 50 years or more. On Mon, Oct 12, 2020 at 12:16 PM Bharat Adur <bharatadur(a)gmail.com> wrote: > Dear Sir, > We find for India there is certain bias taken by some individuals in a > country which has such a large population and its Indian Standard Time (IST > UT= 5hours 30 minutes), which is accepted by National Physical Laboratory > (NPL),New Delhi and Astronomical Society of India. our norm of 1970 cannot > be acceptable to Modern India hence its our humble request you to consider > IST UT= 5hours 30 minutes. and if you desire we can send you at least 50 > cities. therein. > With warm Regards > Bharat Adur > > On Mon, Oct 12, 2020 at 10:44 PM Jonathan Leffler < > jonathan.leffler(a)gmail.com> wrote: > >> The way the TZDB works is that if all areas of a country have used the >> same time rules since 1st January 1970, there will be a single time zone >> entry for that country. >> >> Are there any parts of India that have not used the same time rules as >> Asia/Calcutta (Asia/Kolkata?) since 1970-01-01? If not, there is no reason >> to introduce any new zones. If you have an application that wishes to >> provide alternative names, then you may. It is not recommended that the >> names in the database are shown to end users in any case. >> >> This is discussed in the theory.html file distributed with the TZDB data. >> >> >> On Mon, Oct 12, 2020 at 8:47 AM Bharat Adur <bharatadur(a)gmail.com> wrote: >> >>> Dear Sir >>> Indian is very large country with over 130 billion population with 28 >>> states and over fifty major cities including Mumbai. >>> However in your catalog list for India in tz list , we have only as >>> Asia/Calcutta. >>> Can you kindly introduce in python in tz it should locate the place and >>> th local time, >>> with best regards >>> Bharat Adur >>> >> >> >> -- >> Jonathan Leffler <jonathan.leffler(a)gmail.com> #include <disclaimer.h> >> Guardian of DBD::Informix - v2018.1031 - http://dbi.perl.org >> "Blessed are we who can laugh at ourselves, for we shall never cease to >> be amused." >> > -- Jonathan Leffler <jonathan.leffler(a)gmail.com> #include <disclaimer.h> Guardian of DBD::Informix - v2018.1031 - http://dbi.perl.org "Blessed are we who can laugh at ourselves, for we shall never cease to be amused."

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DST changes in Hungary (full historical revision)
by Nyáry Géza Oct. 12, 2020

Oct. 12, 2020

Dear Paul! I examined it all of the Hungary daylight saving time changes. More differences I found what I repaired and I prepared it it source file, which I attach to this letter. I used Library Hungarica online database as a source, where from scanned contemporary ministerial decrees, instructions, newspapers and from other documents it was possible to find the time of the changes concerning the years. https://library.hungaricana.hu I checked the modified changes many times and I considered it right. If it's possible, I ask the exchange the attached modified Hungarian section in global database! Thank you very much! Bets regards, Géza Nyáry

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