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62 lines
2.1 KiB
62 lines
2.1 KiB
# Allowance for leap seconds added to each time zone file.
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# This file is in the public domain.
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# This file is generated automatically from the data in the public-domain
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# leap-seconds.list file, which is copied from:
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# ftp://ftp.nist.gov/pub/time/leap-seconds.list
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# For more about leap-seconds.list, please see
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# The NTP Timescale and Leap Seconds
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# https://www.eecis.udel.edu/~mills/leap.html
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# The International Earth Rotation and Reference Systems Service
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# periodically uses leap seconds to keep UTC to within 0.9 s of UT1
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# (which measures the true angular orientation of the earth in space); see
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# Levine J. Coordinated Universal Time and the leap second.
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# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995
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# http://ieeexplore.ieee.org/document/7909995/
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# There were no leap seconds before 1972, because the official mechanism
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# accounting for the discrepancy between atomic time and the earth's rotation
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# did not exist until the early 1970s.
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# The correction (+ or -) is made at the given time, so lines
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# will typically look like:
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# Leap YEAR MON DAY 23:59:60 + R/S
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# or
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# Leap YEAR MON DAY 23:59:59 - R/S
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# If the leapsecond is Rolling (R) the given time is local time.
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# If the leapsecond is Stationary (S) the given time is UTC.
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# Leap YEAR MONTH DAY HH:MM:SS CORR R/S
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Leap 1972 Jun 30 23:59:60 + S
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Leap 1972 Dec 31 23:59:60 + S
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Leap 1973 Dec 31 23:59:60 + S
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Leap 1974 Dec 31 23:59:60 + S
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Leap 1975 Dec 31 23:59:60 + S
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Leap 1976 Dec 31 23:59:60 + S
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Leap 1977 Dec 31 23:59:60 + S
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Leap 1978 Dec 31 23:59:60 + S
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Leap 1979 Dec 31 23:59:60 + S
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Leap 1981 Jun 30 23:59:60 + S
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Leap 1982 Jun 30 23:59:60 + S
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Leap 1983 Jun 30 23:59:60 + S
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Leap 1985 Jun 30 23:59:60 + S
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Leap 1987 Dec 31 23:59:60 + S
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Leap 1989 Dec 31 23:59:60 + S
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Leap 1990 Dec 31 23:59:60 + S
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Leap 1992 Jun 30 23:59:60 + S
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Leap 1993 Jun 30 23:59:60 + S
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Leap 1994 Jun 30 23:59:60 + S
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Leap 1995 Dec 31 23:59:60 + S
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Leap 1997 Jun 30 23:59:60 + S
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Leap 1998 Dec 31 23:59:60 + S
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Leap 2005 Dec 31 23:59:60 + S
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Leap 2008 Dec 31 23:59:60 + S
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Leap 2012 Jun 30 23:59:60 + S
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Leap 2015 Jun 30 23:59:60 + S
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Leap 2016 Dec 31 23:59:60 + S
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# Updated through IERS Bulletin C55
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# File expires on: 28 December 2018
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