Will show you the current system time and Time zone information. To change time zone
type;
$sudo dpkg-reconfigure tzdata
And select the correct time zone. Restart the system with:
$sudo shutdown –r now
and the time zone change will take effect.
9.8.6 Setting the time and date
For installations where users allow direct access to the internet, the system will interface
with the Ubuntu Network Time Protocol server to keep synchronised to live atomic
clocks. More information can be found here:
https://help.ubuntu.com/10.04/serverguide/NTP.html
If not connected to the internet, it is possible to a timeserver on your intranet or to
manually set the time and date of the system.
To manually set the date and time of the system use the command
$ sudo timedatectl set-time "Mon 2014-10-27 18:00:00"
With correct values substituted in.