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Network Time Protocol, This will keep you system date with exact match to actual date.

  • Type date to see current date and time

date
  • Install NTP

apt-get install ntpdate
  • Done.
  • Type date again to see if the time changed.

  • [Optional]If you would like to add a server that is closer to you and you know its address. You could type:

/etc/init.d/ntp-server stop
ntpdate clock.fmt.he.net
ntpdate ntp1.tummy.com
/etc/init.d/ntp-server start

Using The Cron

To configure the system to synchronize the clock with an Internet Time Server, every morning add the following entry to the /etc/crontab configuration file:

#m h dom mon dow user command 57 5 * * * root /usr/sbin/ntpdate ntp.blueyonder.co.uk

Public Internet Time Servers

uk.pool.ntp.org (This points to a random United Kingdom based time server)