changing time zone from ist to bst

Hi,

Can anybody tell me how to change time zone from ist to bst,

What changes should be done in /etc/TIMEZONE file.

wheather it is possible to change timezone without rebooting the server.

Regards

Manoj

What OS are you running?
You will need to reboot the server even in Solaris 10.
Anything that displays time may need restarted. The TIMEZONE file
is read during initialization and not accessed again. While restarting
daemons might do the trick, the only way to be sure all pieces of
the system have seen the change is reboot, especially for something
that will affect cron

Example
1) As a root execute the following command.
#zic /usr/share/lib/zoneinfo/asia

2)Edit /etc/TIMEZONE file and set the TZ variable to "Asia/Calcutta".

  1. As root, execute the following:
    #TZ=Asia/Calcutta
    #export TZ