Synchronise server clock to the network NTP CentOS RHEL OEL 6

Want to synchronise your servers clock to the network?

# yum install ntpdate
# chkconfig ntpdate on

specifie NTP server in:/etc/ntp/step-tickers or /etc/ntp.conf

# List of servers used for initial synchronization.
0.pool.ntp.org
1.pool.ntp.org
2.pool.ntp.org
3.pool.ntp.org

# service ntpdate start

Thanks http://www.pool.ntp.org/ provide the free service!