change date ?

How can I change my date and time in linux ?
I know it's with the date command I've read the man pages but can't seem to figure out how to do it

date -s '25.03.2003 12:00:10'

if you want to set your cmos clock too, start "hwclock --systohc" after this.

If you have an internet connection, you could also use an NTP time server.

As root, enter the command:
ntpdate tick.usno.navy.mil

A couple other time servers are:
tock.usno.navy.mil
chime1.surfnet.nl
ntp.univ-lyon1.fr
ntps1-0.cs.tu-berlin.de
ntps1-0.uni-erlangen.de
time.zyfer.com

Actually, I've only tried USNO and Zyfer, but at least the others are more local to you, for what that's worth.

There's also an rdate command that connects to a timserver (port 37) TCP server. Of course, you will need to be root. I also found the other day that Red Hat wouldn't let me run rdate by telneting in and su'ing to root, but rather I had to do it from the console. Sorry, I don't have a list of those servers handy.