Check

[root@server ~]$ date

Example output:

Tue Jun 14 19:19:03 ALMT 2016

Set

[root@server ~]$ date +%D -s '2015-11-16 14:30:00'

Sync with BIOS, it will not resset after reboot

[root@server ~]$ hwclock --localtime --systohc

NTP Sync

[root@server ~]$ ntpdate ntp.blueyonder.co.uk