Ubuntu has an easy way to keep your system synchronized with the internet time servers. This is especially useful on older computers that may have problems with the system clock losing time.
Note: This article is out of date. Please read our updated article, Sync the Clock with Internet Time Servers in Ubuntu 10.04
To enable this feature, first we’ll right click the clock and choose Adjust Date & Time:
You should see this screen, where you can select the checkbox to synchronize the time:
Most likely, NTP support has not been installed on your computer, unless you had installed it before. Click the Install NTP support button to install it.
Your system should now start synchronizing the time with the time servers. If you want to manually sync the time, you have to first uncheck the “keep clock synchronized” checkbox, and then you can check the “Synchronize Now” button: