[tz] tzdb timezone names/identifiers and links
martin.burnicki at meinberg.de
Tue Feb 26 08:50:44 UTC 2019
Paul Eggert wrote:
> On 2/25/19 2:32 AM, Martin Burnicki wrote:
>> If the current time zone names should indeed just be taken as IDs rather
>> than real names then IMO it would be very helpful if there also was a
>> list of mappings provided that links readable display names to TZDB ID
> tzdb provides this in its combination of the files zone1970.tab and
> iso3166.tab, the latter useful if the former simply lists country codes.
> For example, zone1970.tab maps America/Porto_Velho to "Rondônia" (since
> the country of Brazil has multiple timezones), and maps Europe/Prague to
> CZ,SK which iso3166.tab in turn maps to "Czech Republic" and "Slovakia"
> (since this timezone has multiple countries).
> The tzdb files support only American English; as Tony mentioned, for
> other locales CLDR is the way to go.
OK, but for "normal" users or even developers this may still be
confusing enough. ;-)
>> For example, the zone "Europe/Macedonia" is displayed as
>> "Europa/Makedonien" on my Linux/KDE system set to German language.
> That's odd, as tzdb has no zone named "Europe/Macedonia". North
> Macedonia is currently represented by Europe/Belgrade. If tzdb had a
> timezone named "Europe/Macedonia", we'd have to worry about renaming it
> to "Europe/North_Macedonia" now.
While "Europa/Makedonien" is shown in KDE, "Europe/Macedonia" comes from
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
4) Arctic Ocean
6) Atlantic Ocean
9) Indian Ocean
10) Pacific Ocean
11) none - I want to specify the time zone using the Posix TZ format.
Please select a country.
1) Aaland Islands 18) Greece 35) Norway
2) Albania 19) Guernsey 36) Poland
3) Andorra 20) Hungary 37) Portugal
4) Austria 21) Ireland 38) Romania
5) Belarus 22) Isle of Man 39) Russia
6) Belgium 23) Italy 40) San Marino
7) Bosnia & Herzegovina 24) Jersey 41) Serbia
8) Britain (UK) 25) Latvia 42) Slovakia
9) Bulgaria 26) Liechtenstein 43) Slovenia
10) Croatia 27) Lithuania 44) Spain
11) Czech Republic 28) Luxembourg 45) Sweden
12) Denmark 29) Macedonia 46) Switzerland
13) Estonia 30) Malta 47) Turkey
14) Finland 31) Moldova 48) Ukraine
15) France 32) Monaco 49) Vatican City
16) Germany 33) Montenegro
17) Gibraltar 34) Netherlands
The following information has been given:
Therefore TZ='Europe/Skopje' will be used.
Local time is now: Tue Feb 26 09:18:33 CET 2019.
Universal Time is now: Tue Feb 26 08:18:33 UTC 2019.
> Perhaps the strings "Europe/Macedonia" and "Europa/Makedonien" are part
> of the KDE user interface to tzdb; if so, KDE will need to deal with the
> country's recent renaming.
I'm not sure if KDE uses CLDR or whatever, but from a pure
user/developer's point of view I think there is still room for
improvement to yield consistent information presented in the user
That would also avoid discussions as with the ID name for Ukraine, or
the new liberland time just requested by a user.
I'm aware that is really complex stuff, though.
Senior Software Engineer
MEINBERG Funkuhren GmbH & Co. KG
Email: martin.burnicki at meinberg.de
Phone: +49 5281 9309-414
Lange Wand 9, 31812 Bad Pyrmont, Germany
Amtsgericht Hannover 17HRA 100322
Geschäftsführer/Managing Directors: Günter Meinberg, Werner Meinberg,
Andre Hartmann, Heiko Gerstung
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