Leap Seconds
NTP delivers UTC time. UTC is subject to scheduled leap seconds to synchronize the timescale to the rotation of the earth. When a leap second is added, NTP is suspended for 1 second. Because NTP has no mechanism for remembering the history of leap seconds, leap seconds cause the entire NTP timescale to shift by 1 second.
Read more about this topic: Network Time Protocol
Famous quotes containing the words leap and/or seconds:
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—Barbara Lippert, U.S. advertising critic. As quoted in Newsweek magazine, p. 8 (June 16, 1986)