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Bug #34710 Etc/GMT+/- timezones display incorrect time with date_default_timezone_set
Submitted: 2005-10-03 04:35 UTC Modified: 2005-10-03 08:07 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: rcronin at gmail dot com Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 5.1.0RC1 OS: CentOS 4
Private report: No CVE-ID: None
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 [2005-10-03 04:35 UTC] rcronin at gmail dot com 
Description:
------------
All the Etc/GMT+/- timezones display incorrect times. Example, when Asia/Tokyo is entered as the time zone the correc time is  displayed, Tokyo is GMT+9. When Etc/GMT+9 is entered for the time zone the time is incorrect. Output example:

GMT: 10/03/05 02:28 AM
GMT+9 (Asia/Tokyo): 10/03/05 11:28 AM (correct)
GMT+9 (Etc/GMT+9): 10/02/05 05:28 PM

The same occures for all the Etc timezone inputs except the GMT+0 zones.

I am running CentOS 4 with PHP5.1.0RC1. date.timezone is set to Etc/UTC, as is the server. Server clock is kept in UTC.

Reproduce code:
---------------
http://www.xotion.com/settings/

Expected result:
----------------
Time output is correct for specified time zone.

Actual result:
--------------
Time output is correct only for non-Etc time zones and GMT+0/GMT-0/UTC/Universal.

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 [2005-10-03 07:09 UTC] sniper@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5-win32-latest.zip
 [2005-10-03 08:07 UTC] derick@php.net 
This is not a bug, for some reason the Etc/GMT<x> timezones implement the GMT offset the "wrong way". See here what my OS does by default:

derick@kossu:~$ date
Mon Oct  3 08:05:29 CEST 2005
derick@kossu:~$ export TZ=Etc/GMT+9
derick@kossu:~$ date
Sun Oct  2 21:05:36 GMT+9 2005
derick@kossu:~$ export TZ=Etc/GMT-9
derick@kossu:~$ date
Mon Oct  3 15:06:44 GMT-9 2005

I would really recommend NOT to use those though, but rather use "Asia/Tokyo".
 
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