Use Ntpdate to correct Linux system time __linux

When the Linux server time is not correct, you can use the Ntpdate tool to correct time.

Installation: Yum Install Ntpdate

Ntpdate Simple usage:

# ntpdate IP

# ntpdate 210.72.145.44

The following are some of the available NTP server addresses:

Name	Ip	Location
210.72.145.44	210.72.145.44	China (National Timing Center)
133.100.11.8	133.100.11.8	Japan (Fukuoka University)
Time-a.nist.gov	129.6.15.28	Nist,gaithersburg,maryland
Time-b.nist.gov	129.6.15.29	Nist,gaithersburg,maryland
Time-a.timefreq.bldrdoc.gov	132.163.4.101	Nist,boulder,colorado
Time-b.timefreq.bldrdoc.gov	132.163.4.102	Nist,boulder,colorado
Time-c.timefreq.bldrdoc.gov	132.163.4.103	Nist,boulder,colorado
utcnist.colorado.edu	128.138.140.44	Universityofcolorado,boulder
Time.nist.gov	192.43.244.18	Ncar,boulder,colorado
Time-nw.nist.gov	131.107.1.10	Microsoft,redmond,washington
Nist1.symmetricom.com	69.25.96.13	Symmetricom,sanjose,california
Nist1-dc.glassey.com	216.200.93.8	Abovenet,virginia
Nist1-ny.glassey.com	208.184.49.9	Abovenet,newyorkcity
Nist1-sj.glassey.com	207.126.98.204	Abovenet,sanjose,california
Nist1.aol-ca.truetime.com	207.200.81.113	Truetime,aolfacility,sunnyvale,california
Nist1.aol-va.truetime.com	64.236.96.53	Truetime,aolfacility,virginia

This is from: http://blog.csdn.net/lixianlin/article/details/7045321