Clock Sync dengan NTPD

apt-get install ntp ntpdate

edit /etc/ntp.conf

uncomment bahagian server dan masukkan server malaysia ni
#server 0.debian.pool.ntp.org iburst dynamic
#server 1.debian.pool.ntp.org iburst dynamic
#server 2.debian.pool.ntp.org iburst dynamic
#server 3.debian.pool.ntp.org iburst dynamic

server 0.my.pool.ntp.org
server 0.asia.pool.ntp.org
server 2.asia.pool.ntp.org

/etc/init.d/ntp restart