NTP - sync your time!
What is NTP?
NTP is a protocol to synchronizing the clocks on host using publicly available NTP servers.
How use?
To use you must know NTP server address. Here list some of them:
0.debian.pool.ntp.org 1.debian.pool.ntp.org
2.debian.pool.ntp.org
uk.pool.ntp.org ua.pool.ntp.org
Some servers are national. They can be found as ISO 639 code with .pool.ntp.org suffix.
Debian.
Install ntpdate package:
$ sudo apt-get install ntpdate
and sync date with some NTP server:
$ sudo ntpdate 0.debian.pool.ntp.org
Windows. See http://support.microsoft.com/kb/q216734/ http://support.microsoft.com/kb/q223184/