1 # 2 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 # 4 # This code is free software; you can redistribute it and/or modify it 5 # under the terms of the GNU General Public License version 2 only, as 6 # published by the Free Software Foundation. 7 # 8 # This code is distributed in the hope that it will be useful, but WITHOUT 9 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 # version 2 for more details (a copy is included in the LICENSE file that 12 # accompanied this code). 13 # 14 # You should have received a copy of the GNU General Public License version 15 # 2 along with this work; if not, write to the Free Software Foundation, 16 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 # 18 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 # or visit www.oracle.com if you need additional information or have any 20 # questions. 21 # 22 # Allowance for leap seconds added to each time zone file. 23 24 # This file is in the public domain. 25 26 # This file is generated automatically from the data in the public-domain 27 # leap-seconds.list file, which can be copied from 28 # <ftp://ftp.nist.gov/pub/time/leap-seconds.list> 29 # or <ftp://ftp.boulder.nist.gov/pub/time/leap-seconds.list> 30 # or <ftp://tycho.usno.navy.mil/pub/ntp/leap-seconds.list>. 31 # For more about leap-seconds.list, please see 32 # The NTP Timescale and Leap Seconds 33 # <https://www.eecis.udel.edu/~mills/leap.html>. 34 35 # The International Earth Rotation and Reference Systems Service 36 # periodically uses leap seconds to keep UTC to within 0.9 s of UT1 37 # (which measures the true angular orientation of the earth in space) 38 # and publishes leap second data in a copyrighted file 39 # <https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat>. 40 # See: Levine J. Coordinated Universal Time and the leap second. 41 # URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995 42 # <https://ieeexplore.ieee.org/document/7909995>. 43 44 # There were no leap seconds before 1972, because the official mechanism 45 # accounting for the discrepancy between atomic time and the earth's rotation 46 # did not exist. The first ("1 Jan 1972") data line in leap-seconds.list 47 # does not denote a leap second; it denotes the start of the current definition 48 # of UTC. 49 50 # The correction (+ or -) is made at the given time, so lines 51 # will typically look like: 52 # Leap YEAR MON DAY 23:59:60 + R/S 53 # or 54 # Leap YEAR MON DAY 23:59:59 - R/S 55 56 # If the leap second is Rolling (R) the given time is local time (unused here). 57 Leap 1972 Jun 30 23:59:60 + S 58 Leap 1972 Dec 31 23:59:60 + S 59 Leap 1973 Dec 31 23:59:60 + S 60 Leap 1974 Dec 31 23:59:60 + S 61 Leap 1975 Dec 31 23:59:60 + S 62 Leap 1976 Dec 31 23:59:60 + S 63 Leap 1977 Dec 31 23:59:60 + S 64 Leap 1978 Dec 31 23:59:60 + S 65 Leap 1979 Dec 31 23:59:60 + S 66 Leap 1981 Jun 30 23:59:60 + S 67 Leap 1982 Jun 30 23:59:60 + S 68 Leap 1983 Jun 30 23:59:60 + S 69 Leap 1985 Jun 30 23:59:60 + S 70 Leap 1987 Dec 31 23:59:60 + S 71 Leap 1989 Dec 31 23:59:60 + S 72 Leap 1990 Dec 31 23:59:60 + S 73 Leap 1992 Jun 30 23:59:60 + S 74 Leap 1993 Jun 30 23:59:60 + S 75 Leap 1994 Jun 30 23:59:60 + S 76 Leap 1995 Dec 31 23:59:60 + S 77 Leap 1997 Jun 30 23:59:60 + S 78 Leap 1998 Dec 31 23:59:60 + S 79 Leap 2005 Dec 31 23:59:60 + S 80 Leap 2008 Dec 31 23:59:60 + S 81 Leap 2012 Jun 30 23:59:60 + S 82 Leap 2015 Jun 30 23:59:60 + S 83 Leap 2016 Dec 31 23:59:60 + S 84 85 # POSIX timestamps for the data in this file: 86 #updated 1467936000 87 #expires 1577491200 88 89 # Updated through IERS Bulletin C57 90 # File expires on: 28 December 2019