Debian. Set System Time and Time Zone

Steps
Step 1(Check your time zone):
root@localhost: cat /etc/timezone

Step 2 (Reconfigure):
root@localhost: tzconfig

or
root@localhost: dpkg-reconfigure tzdata
Choose yourtime zone and save

Check your date:
root@localhost: date

Sync with time server
Step1 (Install ntpdate):
Step2 (add to /etc/ntp.conf your localtime server)
~~~
server my.local.time.server
~~~

Used oreilly