Bug#1138037: marked as done (tzdata: zone1970.tab tags Asia/Tokyo with both JP and AU country codes)

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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.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [email protected]
immediately.)


--=20
1138037: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D1138037
Debian Bug Tracking System
Contact [email protected] with problems

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Date: Wed, 27 May 2026 20:42:39 +1000
From: "Ash Forsyth" <[email protected]>
To: [email protected]
Message-Id: <[email protected]>
Subject: tzdata: zone1970.tab tags Asia/Tokyo with both JP and AU country codes
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--65953a95a97214de637f57530eb598cb9d08abb4
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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=C2=B039'16", +139=C2=B044'41") point to Tokyo, Japa=
n =E2=80=94 not
to the Eyre Bird Observatory, which is located in Western Australia
(approximately -32=C2=B015', +126=C2=B018'). 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
--65953a95a97214de637f57530eb598cb9d08abb4
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title></head><body><div class=3D"ali=
gn-start" style=3D"text-align:start;"><span class=3D"color" style=3D"col=
or:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"background-color=
:rgba(0, 0, 0, 0);"></span>Package: tzdata</span></div><div class=3D"ali=
gn-start" style=3D"text-align:start;"><span class=3D"color" style=3D"col=
or:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"background-color=
:rgba(0, 0, 0, 0);"></span>Version: 2026b-0+deb13u1</span></div><div cla=
ss=3D"align-start" style=3D"text-align:start;"><span class=3D"color" sty=
le=3D"color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"backgro=
und-color:rgba(0, 0, 0, 0);"></span>Severity: normal</span></div><div cl=
ass=3D"align-start" style=3D"text-align:start;"><br></div><div class=3D"=
align-start" style=3D"text-align:start;"><span class=3D"color" style=3D"=
color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"background-co=
lor:rgba(0, 0, 0, 0);"></span>The file /usr/share/zoneinfo/zone1970.tab =
contains a corrupted row that</span></div><div class=3D"align-start" sty=
le=3D"text-align:start;"><span class=3D"color" style=3D"color:rgb(26, 26=
, 26);"><span class=3D"highlight" style=3D"background-color:rgba(0, 0, 0=
, 0);"></span>tags Asia/Tokyo with both the JP and AU country codes:</sp=
an></div><div class=3D"align-start" style=3D"text-align:start;"><br></di=
v><div class=3D"align-start" style=3D"text-align:start;"><span class=3D"=
color" style=3D"color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D=
"background-color:rgba(0, 0, 0, 0);"></span>JP,AU	+353916+1394441	Asia/T=
okyo	Eyre Bird Observatory</span></div><div class=3D"align-start" style=3D=
"text-align:start;"><br></div><div class=3D"align-start" style=3D"text-a=
lign:start;"><span class=3D"color" style=3D"color:rgb(26, 26, 26);"><spa=
n class=3D"highlight" style=3D"background-color:rgba(0, 0, 0, 0);"></spa=
n>The coordinates (+35=C2=B039'16", +139=C2=B044'41") point to Tokyo, Ja=
pan =E2=80=94 not</span></div><div class=3D"align-start" style=3D"text-a=
lign:start;"><span class=3D"color" style=3D"color:rgb(26, 26, 26);"><spa=
n class=3D"highlight" style=3D"background-color:rgba(0, 0, 0, 0);"></spa=
n>to the Eyre Bird Observatory, which is located in Western Australia</s=
pan></div><div class=3D"align-start" style=3D"text-align:start;"><span c=
lass=3D"color" style=3D"color:rgb(26, 26, 26);"><span class=3D"highlight=
" style=3D"background-color:rgba(0, 0, 0, 0);"></span>(approximately -32=
=C2=B015', +126=C2=B018'). It looks like two separate rows</span></div><=
div class=3D"align-start" style=3D"text-align:start;"><span class=3D"col=
or" style=3D"color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"=
background-color:rgba(0, 0, 0, 0);"></span>were merged: the real Tokyo e=
ntry (JP, Asia/Tokyo) and a missing</span></div><div class=3D"align-star=
t" style=3D"text-align:start;"><span class=3D"color" style=3D"color:rgb(=
26, 26, 26);"><span class=3D"highlight" style=3D"background-color:rgba(0=
, 0, 0, 0);"></span>Australian entry for Eyre Bird Observatory (probably=
 AU,</span></div><div class=3D"align-start" style=3D"text-align:start;">=
<span class=3D"color" style=3D"color:rgb(26, 26, 26);"><span class=3D"hi=
ghlight" style=3D"background-color:rgba(0, 0, 0, 0);"></span>Australia/E=
ucla).</span></div><div class=3D"align-start" style=3D"text-align:start;=
"><br></div><div class=3D"align-start" style=3D"text-align:start;"><span=
 class=3D"color" style=3D"color:rgb(26, 26, 26);"><span class=3D"highlig=
ht" style=3D"background-color:rgba(0, 0, 0, 0);"></span>The user-visible=
 effect: TZInfo::Country.get("AU").zone_identifiers in</span></div><div =
class=3D"align-start" style=3D"text-align:start;"><span class=3D"color" =
style=3D"color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"back=
ground-color:rgba(0, 0, 0, 0);"></span>Ruby (and equivalent calls in oth=
er tz libraries) now lists Asia/Tokyo</span></div><div class=3D"align-st=
art" style=3D"text-align:start;"><span class=3D"color" style=3D"color:rg=
b(26, 26, 26);"><span class=3D"highlight" style=3D"background-color:rgba=
(0, 0, 0, 0);"></span>as an Australian zone. Application code that enume=
rates "all</span></div><div class=3D"align-start" style=3D"text-align:st=
art;"><span class=3D"color" style=3D"color:rgb(26, 26, 26);"><span class=
=3D"highlight" style=3D"background-color:rgba(0, 0, 0, 0);"></span>timez=
ones in Australia" gets Tokyo, Osaka, and Sapporo mixed in.</span></div>=
<div class=3D"align-start" style=3D"text-align:start;"><br></div><div cl=
ass=3D"align-start" style=3D"text-align:start;"><span class=3D"color" st=
yle=3D"color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"backgr=
ound-color:rgba(0, 0, 0, 0);"></span>Reproducer:</span></div><div class=3D=
"align-start" style=3D"text-align:start;"><br></div><div class=3D"align-=
start" style=3D"text-align:start;"><span class=3D"color" style=3D"color:=
rgb(26, 26, 26);"><span class=3D"highlight" style=3D"background-color:rg=
ba(0, 0, 0, 0);"></span>$ grep -E '^(AU|[^[:space:]]+,AU)' /usr/share/zo=
neinfo/zone1970.tab</span></div><div class=3D"align-start" style=3D"text=
-align:start;"><br></div><div class=3D"align-start" style=3D"text-align:=
start;"><span class=3D"color" style=3D"color:rgb(26, 26, 26);"><span cla=
ss=3D"highlight" style=3D"background-color:rgba(0, 0, 0, 0);"></span>...=
 shows the JP,AU Asia/Tokyo row at the bottom.</span></div><div class=3D=
"align-start" style=3D"text-align:start;"><br></div><div class=3D"align-=
start" style=3D"text-align:start;"><span class=3D"color" style=3D"color:=
rgb(26, 26, 26);"><span class=3D"highlight" style=3D"background-color:rg=
ba(0, 0, 0, 0);"></span>Expected: Asia/Tokyo should be tagged with JP on=
ly. A separate row</span></div><div class=3D"align-start" style=3D"text-=
align:start;"><span class=3D"color" style=3D"color:rgb(26, 26, 26);"><sp=
an class=3D"highlight" style=3D"background-color:rgba(0, 0, 0, 0);"></sp=
an>should exist for the AU entry (likely Australia/Eucla).</span></div><=
div class=3D"align-start" style=3D"text-align:start;"><br></div><div cla=
ss=3D"align-start" style=3D"text-align:start;"><span class=3D"color" sty=
le=3D"color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"backgro=
und-color:rgba(0, 0, 0, 0);"></span>-- System Information:</span></div><=
div class=3D"align-start" style=3D"text-align:start;"><span class=3D"col=
or" style=3D"color:rgb(26, 26, 26);"><span class=3D"highlight" style=3D"=
background-color:rgba(0, 0, 0, 0);"></span>Debian Release: 13 (trixie)</=
span></div><div class=3D"align-start" style=3D"text-align:start;"><span =
class=3D"color" style=3D"color:rgb(26, 26, 26);"><span class=3D"highligh=
t" style=3D"background-color:rgba(0, 0, 0, 0);"></span>Package version: =
2026b-0+deb13u1</span></div></body></html>
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Date: Mon, 13 Jul 2026 22:25:30 +0200
From: Aurelien Jarno <[email protected]>
To: [email protected]
Cc: Ash Forsyth <[email protected]>
Subject: Re: Bug#1138037: tzdata: zone1970.tab tags Asia/Tokyo with both JP
 and AU country codes
Message-ID: <[email protected]>
References: <[email protected]>
 <[email protected]>
 <[email protected]>
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X-Debian-User: aurel32

Hi,

On 2026-05-27 19:02, Aurelien Jarno wrote:
> Hi,
>=20
> On 2026-05-27 20:42, Ash Forsyth wrote:
> > Package: tzdata
> > Version: 2026b-0+deb13u1
> > Severity: normal
> >=20
> > The file /usr/share/zoneinfo/zone1970.tab contains a corrupted row that
> > tags Asia/Tokyo with both the JP and AU country codes:
> >=20
> > JP,AU +353916+1394441 Asia/Tokyo Eyre Bird Observatory
>=20
> I think this is actually correct. zone1970.tab group zones so that each=
=20
> row stands for a timezone where civil timestamps have agreed since 1970.=
=20
> It means that both Tokyo and the Eyre Bird Observatory got the same time=
=20
> since 1970.
>=20
> > The coordinates (+35=C2=B039'16", +139=C2=B044'41") point to Tokyo, Jap=
an =E2=80=94 not
> > to the Eyre Bird Observatory, which is located in Western Australia
> > (approximately -32=C2=B015', +126=C2=B018'). 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).
>=20
> This is also correct. In case multiple countries are covered by the same=
=20
> row, the most populous city is used, and that country is listed first.
>=20
> See the header of that file for more details.
>=20
> > 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.
>=20
> This should probably use zone.tab instead, which does not try to group=20
> timezones.  Indeed there are two distinct entries there:
>=20
> AU      -3143+12852     Australia/Eucla Western Australia (Eucla)
> ...
> JP      +353916+1394441 Asia/Tokyo
>=20

As explained above, this is not a bug, I am therefore closing it. Feel=20
free to reopen it if you disagree.

Regards
Aurelien

--=20
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
[email protected]                     http://aurel32.net
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