If you want to change the time zone for your server to match your own time zone then this can be done very easily by doing the following:
1.) Remove the existing time zone setup with: "rm /etc/localtime"
2.) Symlink the time zone you want with: "ln -s /usr/share/zoneinfo/Europe/London /etc/localtime" (where Europe/London is the time zone you want!)
If you now issue "date" you should now see the time zone had been adjusted!