Ubuntu NTP
Run the following command to get the time in sync where “ntp_server” is the name or IP address of a valid NTP server:
ntpdate ntp_server
Then install the NTP daemon:
sudo apt-get install ntp
Edit /etc/ntp.conf:
server ntp_server1 server ntp_server2
Save it and restart ntpd:
sudo /etc/init.d/ntp restart
Reference
https://help.ubuntu.com/8.04/serverguide/C/NTP.html
– Main.FredPettis - 2010-12-03