[Linux Datetime] Synchronize Server Datetime

NTP Server - We need a Network Time Protocol Server to do the time synchronization task.
Example Domain: time.stdtime.gov.tw, stdtime.gov.hk
http://www.vixual.net/blog/archives/5
http://www.hko.gov.hk/nts/ntimec.htm

Run these commands:

ntpdate -s stdtime.gov.hk

hwclock --systohc

ntpdate : set server clock time
hwclock - set hardware clock time