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Bug 224442 - tzdata inverts plusses and minuses for gmt relative timezones
tzdata inverts plusses and minuses for gmt relative timezones
Product: Fedora
Classification: Fedora
Component: tzdata (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Petr Machata
: 808777 (view as bug list)
Depends On:
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Reported: 2007-01-25 13:52 EST by Tom Wood
Modified: 2015-05-04 21:32 EDT (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-02-01 11:13:48 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Tom Wood 2007-01-25 13:52:01 EST
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 11:13:48 EST
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 14:57:08 EDT
*** Bug 808777 has been marked as a duplicate of this bug. ***

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