CentOS 7 – How to Change the Timezone

a) start wine with a different TZ

One solution would be to simply start wine with a different timezone each time (you probably want to update the shortcut in your start menu for example) using:

TZ=Europe/Berlin wine

b) change the TZ in wine

The registry of wine lies in ~/.wine in the files system.reg (=HKEY_LOCAL_MACHINE), user.reg (=HKEY_CURRENT_USER), userdef.reg (=HKEY_USERS) and is accessible by simply running regedit through wine (wine regedit).

The timezone key is in Local Machine -> SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones and can be set to any of the values that you see as directories at this place.

Use the TZ environment variable. E.g.:

bash$ export TZ=US/Pacific
bash$ date
Mon Mar  3 00:31:17 PST 2014
bash$ export TZ=US/Eastern
bash$ date
Mon Mar  3 03:33:06 EST 2014

The possible values for TZ are in the directory /usr/share/zoneinfo (see, for example, the existence of /usr/share/zoneinfo/US/Pacific)