From Tizen Wiki
Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks.
Install and Configure NTP
NTP installation on openSUSE
# zypper install ntp
Modify /etc/ntp.conf # vi /etc/ntp.conf => Add 'server [Reference_NTP_Server_IP]'
# service ntp restart # chkconfig ntp on
'#' means that you work with super user