Modify the time-zone block for the time zone you want to change in the following file:
If you are changing a time-zone name, change the TZID entry to the new name.
Modify the getDisplayNameofTZID template in the following file:
where: language specifies the directory for the language your site is using. For example: en for English or fr for French.
If you are changing the name, change the existing time-zone name to the new name.
Modify the following XML files for changes to the time zone:
For information about the entries in these files, see 19.2.1 Adding a New Time Zone.
If the change affects the default time zone for user preferences, modify the “icsTimeZone” entry in the following file:
Steps 2, 3, and 4 are required only if you use the Calendar Express user interface.
Stop (if necessary) and then restart Calendar Server for your time zone changes to take effect.