Some of you might be aware of the Windows XP capabilities to sync the time with different time servers around the globe.

In order to get the same effect under Linux, I had to read the following things
[1] Newbie: Intro to cron - I have learned some basic crond configurations - this helped me set up automatic updates every 6 hours at x:15+max(10 sec) with the folowing crontab lines:
# Sync clock: every 4h at :15
15 */6 * * * /usr/bin/sync-clock
[2] NTP Configuration - I actually used the ntpdate configuration because I didn’t want to run a ntp daemon just to sync my computer clock. nptd (ntp daemon) is run only on Time Servers, running time based critical processes (for example, some routers use it). I have used the sync script mentioned there to update the clock using crond