Your message dated Mon, 13 Jul 2026 22:25:30 +0200
with message-id <[email protected]>
and subject line Re: Bug#1138037: tzdata: zone1970.tab tags Asia/Tokyo with
both JP and AU country codes
has caused the Debian Bug report #1138037,
regarding tzdata: zone1970.tab tags Asia/Tokyo with both JP and AU country codes
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1138037: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1138037
Debian Bug Tracking System
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--- Begin Message ---
Package: tzdata
Version: 2026b-0+deb13u1
Severity: normal
The file /usr/share/zoneinfo/zone1970.tab contains a corrupted row that
tags Asia/Tokyo with both the JP and AU country codes:
JP,AU +353916+1394441 Asia/Tokyo Eyre Bird Observatory
The coordinates (+35°39'16", +139°44'41") point to Tokyo, Japan — not
to the Eyre Bird Observatory, which is located in Western Australia
(approximately -32°15', +126°18'). It looks like two separate rows
were merged: the real Tokyo entry (JP, Asia/Tokyo) and a missing
Australian entry for Eyre Bird Observatory (probably AU,
Australia/Eucla).
The user-visible effect: TZInfo::Country.get("AU").zone_identifiers in
Ruby (and equivalent calls in other tz libraries) now lists Asia/Tokyo
as an Australian zone. Application code that enumerates "all
timezones in Australia" gets Tokyo, Osaka, and Sapporo mixed in.
Reproducer:
$ grep -E '^(AU|[^[:space:]]+,AU)' /usr/share/zoneinfo/zone1970.tab
... shows the JP,AU Asia/Tokyo row at the bottom.
Expected: Asia/Tokyo should be tagged with JP only. A separate row
should exist for the AU entry (likely Australia/Eucla).
-- System Information:
Debian Release: 13 (trixie)
Package version: 2026b-0+deb13u1
--- End Message ---
--- Begin Message ---
Hi,
On 2026-05-27 19:02, Aurelien Jarno wrote:
> Hi,
>
> On 2026-05-27 20:42, Ash Forsyth wrote:
> > Package: tzdata
> > Version: 2026b-0+deb13u1
> > Severity: normal
> >
> > The file /usr/share/zoneinfo/zone1970.tab contains a corrupted row that
> > tags Asia/Tokyo with both the JP and AU country codes:
> >
> > JP,AU +353916+1394441 Asia/Tokyo Eyre Bird Observatory
>
> I think this is actually correct. zone1970.tab group zones so that each
> row stands for a timezone where civil timestamps have agreed since 1970.
> It means that both Tokyo and the Eyre Bird Observatory got the same time
> since 1970.
>
> > The coordinates (+35°39'16", +139°44'41") point to Tokyo, Japan — not
> > to the Eyre Bird Observatory, which is located in Western Australia
> > (approximately -32°15', +126°18'). It looks like two separate rows
> > were merged: the real Tokyo entry (JP, Asia/Tokyo) and a missing
> > Australian entry for Eyre Bird Observatory (probably AU,
> > Australia/Eucla).
>
> This is also correct. In case multiple countries are covered by the same
> row, the most populous city is used, and that country is listed first.
>
> See the header of that file for more details.
>
> > The user-visible effect: TZInfo::Country.get("AU").zone_identifiers in
> > Ruby (and equivalent calls in other tz libraries) now lists Asia/Tokyo
> > as an Australian zone. Application code that enumerates "all
> > timezones in Australia" gets Tokyo, Osaka, and Sapporo mixed in.
>
> This should probably use zone.tab instead, which does not try to group
> timezones. Indeed there are two distinct entries there:
>
> AU -3143+12852 Australia/Eucla Western Australia (Eucla)
> ...
> JP +353916+1394441 Asia/Tokyo
>
As explained above, this is not a bug, I am therefore closing it. Feel
free to reopen it if you disagree.
Regards
Aurelien
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
[email protected] http://aurel32.net
--- End Message ---
