A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between precise...

A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar...

number of leap seconds" section for the number of leap seconds inserted to date. The first leap second occurred on 30 June 1972. Since then, leap seconds...

second based on fundamental properties of nature with caesium clocks. As the speed of Earth's rotation varies and is slowing ever so slightly, a leap...

UTC on 1 January 1970, with Unix time incrementing by 1 for every non-leap second after this. For example, 00:00:00 UTC on 1 January 1971 is represented...

Look up leap, Leap, or LEAP in Wiktionary, the free dictionary. Leap or LEAP may refer to: Leap (computer worm) LEAP (programming language) Leap Motion...

common case: DST is in effect, and no leap second is pending (the last leap second was 4 days ago). During a leap second, bit 59 (a marker bit with a phase-modulated...

round-trip calibrating exchange. NTP supplies a warning of any impending leap second adjustment, but no information about local time zones or daylight saving...

Because of that trend, engineers worldwide are discussing a 'negative leap second' and other possible timekeeping measures. This increase in speed is thought...

has leap seconds. UTC deviates from TAI by a number of whole seconds. As of 1 January 2017[update], immediately after the most recent leap second was...

variations in the rotation of the Earth, there are rare times when a leap second will get inserted at the end of a UTC day, and so while almost all days...

Quantum Leap is an American science fiction television series, created by Donald P. Bellisario, that aired on NBC for five seasons, from March 26, 1989...

seconds, a consequence of leap seconds; there is also a provision to insert a negative leap second, which would result in a 59-second minute, but this has...

Chinese Famine it caused, making it the largest or second-largest famine in human history. The Great Leap Forward stemmed from multiple factors, including...

short pip at 23:59:60 (the leap second) followed by the long pip at 00:00:00. The possibility of an extra pip for the leap second thus justifies the final...

leap second to the Chinese calendar is somewhat excessive, as it makes future predictions more challenging. This is particularly true since the leap second...

leap year in Wiktionary, the free dictionary. A leap year is a year with an extra day (February 29). Leap year of leap years may also refer to: Leap Year...

a leap second, a zero bit is inserted between seconds 16 and 17. In case of a negative leap second, second 16 will be deleted. Since negative leap seconds...

imminent leap seconds. Bit :03 is set near the beginning of the month which is scheduled to end in a leap second. It is cleared when the leap second occurs...

dictionary. Intercalation or embolism in timekeeping is the insertion of a leap day, week, or month into some calendar years to make the calendar follow...

variation of solar time from atomic time (1) In "The Physical Basis of the Leap Second", by D D McCarthy, C Hackman and R A Nelson, in Astronomical Journal...

transmitted data signal is repeated every minute. Current date and time bits; Leap second warning bit; Imminent change of CET to CEST, or vice versa, Announcement...

basis of civil time implements leap seconds to allow clock time to track changes in Earth's rotation to within one second while being based on clocks that...

(UTC) determines whether a leap second is needed. (Since 1972 the UTC time scale has run on SI seconds, and the SI second, when adopted, was already a...

each string; UTC leap second correction is achieved by shortening or lengthening (zero-padding) the final string of the day by one second, with abnormal...

choice of calendar and are often not regular even with a calendar, e.g., leap years versus regular years in the Gregorian calendar. This makes them problematic...

time, but bits are reserved to handle it. Leap second warning bits are also provided, these announce leap seconds starting at the beginning of the UTC...

calendar with respect to the equinoxes. Second, in the years since the First Council of Nicaea in AD 325, the excess leap days introduced by the Julian algorithm...

However, on rare occasions an hour may incorporate a positive or negative leap second, effectively making it appear to last 3,599 or 3,601 seconds, in order...

this principle is under active debate in standards bodies. See Leap second#Future of leap seconds Seago, John H.; Seidelmann, P. Kenneth; Allen, Steve (5–7...