Ntpd

The Network Time Protocol daemon (ntpd) is an operating system program that maintains the system time in synchronization with time servers using the Network Time Protocol (NTP). The ntpd program is an operating system daemon that sets and maintains the system time in synchronization with Internet standard time servers. It is a complete implementat...
Found on http://en.wikipedia.org/wiki/Ntpd

ntpd

Network Time Protocol Daemon, see Section 7.4.3.
Found on http://www.tldp.org/LDP/intro-linux/html/gloss.html
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