leapseconds revision 39898
1# @(#)leapseconds 7.9 2 3# Allowance for leapseconds added to each timezone file. 4 5# The International Earth Rotation Service periodically uses leap seconds 6# to keep UTC to within 0.9 s of TAI (atomic time); see 7# Terry J Quinn, The BIPM and the accurate measure of time, 8# Proc IEEE 79, 7 (July 1991), 894-905. 9# There were no leap seconds before 1972, because the official mechanism 10# accounting for the discrepancy between atomic time and the earth's rotation 11# did not exist until the early 1970s. 12 13# The correction (+ or -) is made at the given time, so lines 14# will typically look like: 15# Leap YEAR MON DAY 23:59:60 + R/S 16# or 17# Leap YEAR MON DAY 23:59:59 - R/S 18 19# If the leapsecond is Rolling (R) the given time is local time 20# If the leapsecond is Stationary (S) the given time is GMT 21 22# Leap YEAR MONTH DAY HH:MM:SS CORR R/S 23Leap 1972 Jun 30 23:59:60 + S 24Leap 1972 Dec 31 23:59:60 + S 25Leap 1973 Dec 31 23:59:60 + S 26Leap 1974 Dec 31 23:59:60 + S 27Leap 1975 Dec 31 23:59:60 + S 28Leap 1976 Dec 31 23:59:60 + S 29Leap 1977 Dec 31 23:59:60 + S 30Leap 1978 Dec 31 23:59:60 + S 31Leap 1979 Dec 31 23:59:60 + S 32Leap 1981 Jun 30 23:59:60 + S 33Leap 1982 Jun 30 23:59:60 + S 34Leap 1983 Jun 30 23:59:60 + S 35Leap 1985 Jun 30 23:59:60 + S 36Leap 1987 Dec 31 23:59:60 + S 37Leap 1989 Dec 31 23:59:60 + S 38Leap 1990 Dec 31 23:59:60 + S 39Leap 1992 Jun 30 23:59:60 + S 40Leap 1993 Jun 30 23:59:60 + S 41Leap 1994 Jun 30 23:59:60 + S 42Leap 1995 Dec 31 23:59:60 + S 43Leap 1997 Jun 30 23:59:60 + S 44Leap 1998 Dec 31 23:59:60 + S 45