Bug 244165 - invalid timezones Etc/GMT-13, Etc/GMT-14
Summary: invalid timezones Etc/GMT-13, Etc/GMT-14
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: tzdata   
(Show other bugs)
Version: 5.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Petr Machata
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2007-06-14 09:36 UTC by Alexander Todorov
Modified: 2015-05-05 01:33 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2007-06-26 15:48:12 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Alexander Todorov 2007-06-14 09:36:24 UTC
Description of problem:
According to:

there is no timezone GMT-13, GMT-14, officially there are 25 timezones:
GTM, GMT+/-12

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. run system-config-date
2. choose teb "Time zone"
3. expand "Non geographic timezones"
Actual results:
There are Etc/GMT-13 and Etc/GMT-14 timezones.

Expected results:
There should be timezones up to GMT+/-12 only.

Additional info:
This affect Anaconda because it uses system-config-date to allow time zone
settings before installation.

Comment 1 Nils Philippsen 2007-06-14 11:26:18 UTC
system-config-date uses all the timezones found beneath /usr/share/zoneinfo,
e.g. the "Etc/GMT-13" timezone corresponds with the file
/usr/share/zoneinfo/Etc/GMT-13 which is contained in the tzdata package ->
changing component.

Comment 2 Alexander Todorov 2007-06-14 11:46:25 UTC
$ rpm -q tzdata

Comment 3 Petr Machata 2007-06-26 15:48:12 UTC
GMT time zones used to be the only alternative for countries that were not
covered by the zoneinfo "proper" zones.  By now, most of the inhabited world is
covered by proper zones, but GMT zones remain for backwards compatibility, and
for nautical use.

The -13 and -14 zones in particular were used for countries that are on the edge
of the international date line, so that they are don't end up having different
dates on east and west coast.  They have no nautical use, because, as you said,
only -12..+12 makes sense in general; so I guess they are only present for
backwards compatibility.

Comment 4 Alexander Todorov 2007-06-26 16:02:19 UTC
As there is not official timezone GMT-13/14 how do these countries solve the
issue. IMO they stick to some of the official zones. I think this is problem is
in  the competency of those who define timezones. As software dewelopers we
don't have to solve the problems but stick to the rules.

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