This service executes the Network Time Protocol (NTP) daemon ntpd. The purpose is to synchronize the time of the local computer to a NTP server or other reference time source such as a radio or satellite receiver or modem. The NTP system uses two main roles for participating computers: server or client. Time servers supply time to one or more NTP clients. NTP clients use the reference time from one or more NTP servers to determine the local time.
# /sbin/service ntpd
usage: /etc/init.d/ntpd {start|stop|restart|condrestart|status}
/etc/ntp.conf