ntp: ntp (Network Time Protocol daemon)
ntp:
ntp: The Network Time Protocol (NTP) is used to synchronize the time of a
ntp: computer client or server to another server or reference time source,
ntp: such as a radio or satellite receiver or modem. It provides client
ntp: accuracies typically within a millisecond on LANs and up to a few tens
ntp: of milliseconds on WANs relative to a primary server synchronized to
ntp: Coordinated Universal Time (UTC) via a Global Positioning Service
ntp: (GPS) receiver, for example. 
ntp:
ntp: