Manual:Timezone

From MediaWiki.org

The default Timezone (tz) for users who have not specified a custom offset may be configured manually.

[edit] Primary Method

• Create a backup copy of the LocalSettings.php file found in your install directory
• Edit LocalSettings.php and add the following code:

#Set Default Timezone
$wgLocaltimezone = "Asia/Taipei";
$oldtz = getenv("TZ");
putenv("TZ=$wgLocaltimezone");
# Versions before 1.7.0 used $wgLocalTZoffset as hours.
# After 1.7.0 offset as minutes
$wgLocalTZoffset = date("Z") / 60;
putenv("TZ=$oldtz");

• Set the '$wgLocaltimezone' value to the proper value which you can find here. See examples below.

$wgLocaltimezone = "Europe/London";
$wgLocaltimezone = "Asia/Taipei";
$wgLocaltimezone = "Asia/Calcutta";

Note: This timezone will be used in:

• ~~~~ signatures
• timestamps in recentchanges
• timestamps in history

Note: Upload and deletion logs will probably still be listed in UTC
Note: This method has been confirmed to work on MediaWiki: 1.5.6.
Note: The $wgLocalTZoffset configuration changed from hours to minutes in MediaWiki: 1.7.0.

[edit] Unconfirmed Methods

• If you just want to use the local time of your PC, you can just add this line in your LocalSettings.php:

$wgLocalTZoffset = date("Z") / 60;

• To use your local time zone (say NZDT) put this in LocalSettings.php

$wgLocalTZoffset = 13 * 60;

• This example may also work great

$wgLocaltimezone="Europe/Berlin";
$wgLocalTZoffset = +120;

• In my case the primary method did not take daylight saving time into account. The next example works for me:

#Set Default Timezone
$wgLocaltimezone = "Europe/Amsterdam";
 
#Calculate the timezone offset with UTC 
$oldtz = getenv("TZ");
putenv("TZ=$wgLocaltimezone");
$wgLocalTZoffset = date("Z") / 60 + date("I") * 60;
putenv("TZ=$oldtz");

• To make it work in 1.5.8 I had to specify the offset in hours, so change all occurences of '/ 60' to '/ 3600', e.g.

$wgLocaltimezone = "Europe/Amsterdam";
#Calculate the timezone offset with UTC
$oldtz = getenv("TZ");
putenv("TZ=$wgLocaltimezone");
$wgLocalTZoffset = date("Z") / 3600;
putenv("TZ=$oldtz");

I cannot test daylightsavings right now, so you probably have to combine it with the tip above to make that work.

Note: The methods in this section are unconfirmed and may not work properly.

[edit] Manual Timezone Specification

The primary method needs the server to support the 'tz' database; some non-GNU hosts don't do that. You can supply timezone data manually; see here for details. E.g. use

$wgLocaltimezone = "CET-1CEST-2,M3.5.0/2,M10.5.0/2";

instead of

$wgLocaltimezone = "Europe/Budapest";

or

$wgLocaltimezone = "AEST-9,M10.5.0/3,M4.1.0/3";

instead of

$wgLocaltimezone = "Australia/Sydney";

[edit] Specify The Default User's Timezone Offset

In the PHP safe mode, the ways described above may not work since PHP's putenv function is disabled. Alternatively, you can use $wgDefaultUserOptions variable. For instance, If you live in Asia/Tokyo(UTC+9) and want to do "+09:00" time zone correction, add the following code to LocalSettings.php.

$wgDefaultUserOptions['timecorrection'] = '-05:00';

After changing the file, don't forget to purge the cache of articles.

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