Bug 224442 - tzdata inverts plusses and minuses for gmt relative timezones
Summary: tzdata inverts plusses and minuses for gmt relative timezones
Alias: None
Product: Fedora
Classification: Fedora
Component: tzdata
Version: 6
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Petr Machata
QA Contact:
: 808777 (view as bug list)
Depends On:
TreeView+ depends on / blocked
Reported: 2007-01-25 18:52 UTC by Tom Wood
Modified: 2015-05-05 01:32 UTC (History)
2 users (show)

Clone Of:
Last Closed: 2007-02-01 16:13:48 UTC

Attachments (Terms of Use)

Description Tom Wood 2007-01-25 18:52:01 UTC
Description of problem:

Version-Release number of selected component (if applicable): tzdata-2006p-1

How reproducible: Everytime

Steps to Reproduce:
1. Run "system-config-date" and select Time Zone tab.
2. Select GMT-5 to emulate Eastern Standard Time in the US (no DST)
3. Watch as time on system now ahead 10 hours.
Actual results:  You get GMT + 5 hours, not GMT - 5 hours.

Expected results:  GMT - 5 hours, which emulates Eastern Standard Time without
the DST changeover.

Additional info:

Comment 1 Petr Machata 2007-02-01 16:13:48 UTC
Excerpt from tzdata sources:

# We use POSIX-style signs in the Zone names and the output abbreviations,
# even though this is the opposite of what many people expect.
# POSIX has positive signs west of Greenwich, but many people expect
# positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
# the abbreviation "GMT+4" and corresponds to 4 hours behind UTC
# (i.e. west of Greenwich) even though many people would expect it to
# mean 4 hours ahead of UTC (i.e. east of Greenwich).

So here we go, POSIX...

Comment 2 Petr Machata 2012-04-02 18:57:08 UTC
*** Bug 808777 has been marked as a duplicate of this bug. ***

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