14616d0f9Sopenharmony_ci# Allowance for leap seconds added to each time zone file. 24616d0f9Sopenharmony_ci 34616d0f9Sopenharmony_ci# This file is in the public domain. 44616d0f9Sopenharmony_ci 54616d0f9Sopenharmony_ci# This file is generated automatically from the data in the public-domain 64616d0f9Sopenharmony_ci# NIST/IERS format leap-seconds.list file, which can be copied from 74616d0f9Sopenharmony_ci# <https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list> 84616d0f9Sopenharmony_ci# or, in a variant with different comments, from 94616d0f9Sopenharmony_ci# <ftp://ftp.boulder.nist.gov/pub/time/leap-seconds.list>. 104616d0f9Sopenharmony_ci# For more about leap-seconds.list, please see 114616d0f9Sopenharmony_ci# The NTP Timescale and Leap Seconds 124616d0f9Sopenharmony_ci# <https://www.eecis.udel.edu/~mills/leap.html>. 134616d0f9Sopenharmony_ci 144616d0f9Sopenharmony_ci# The rules for leap seconds are specified in Annex 1 (Time scales) of: 154616d0f9Sopenharmony_ci# Standard-frequency and time-signal emissions. 164616d0f9Sopenharmony_ci# International Telecommunication Union - Radiocommunication Sector 174616d0f9Sopenharmony_ci# (ITU-R) Recommendation TF.460-6 (02/2002) 184616d0f9Sopenharmony_ci# <https://www.itu.int/rec/R-REC-TF.460-6-200202-I/>. 194616d0f9Sopenharmony_ci# The International Earth Rotation and Reference Systems Service (IERS) 204616d0f9Sopenharmony_ci# periodically uses leap seconds to keep UTC to within 0.9 s of UT1 214616d0f9Sopenharmony_ci# (a proxy for Earth's angle in space as measured by astronomers) 224616d0f9Sopenharmony_ci# and publishes leap second data in a copyrighted file 234616d0f9Sopenharmony_ci# <https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat>. 244616d0f9Sopenharmony_ci# See: Levine J. Coordinated Universal Time and the leap second. 254616d0f9Sopenharmony_ci# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995 264616d0f9Sopenharmony_ci# <https://ieeexplore.ieee.org/document/7909995>. 274616d0f9Sopenharmony_ci 284616d0f9Sopenharmony_ci# There were no leap seconds before 1972, as no official mechanism 294616d0f9Sopenharmony_ci# accounted for the discrepancy between atomic time (TAI) and the earth's 304616d0f9Sopenharmony_ci# rotation. The first ("1 Jan 1972") data line in leap-seconds.list 314616d0f9Sopenharmony_ci# does not denote a leap second; it denotes the start of the current definition 324616d0f9Sopenharmony_ci# of UTC. 334616d0f9Sopenharmony_ci 344616d0f9Sopenharmony_ci# All leap-seconds are Stationary (S) at the given UTC time. 354616d0f9Sopenharmony_ci# The correction (+ or -) is made at the given time, so in the unlikely 364616d0f9Sopenharmony_ci# event of a negative leap second, a line would look like this: 374616d0f9Sopenharmony_ci# Leap YEAR MON DAY 23:59:59 - S 384616d0f9Sopenharmony_ci# Typical lines look like this: 394616d0f9Sopenharmony_ci# Leap YEAR MON DAY 23:59:60 + S 404616d0f9Sopenharmony_ciLeap 1972 Jun 30 23:59:60 + S 414616d0f9Sopenharmony_ciLeap 1972 Dec 31 23:59:60 + S 424616d0f9Sopenharmony_ciLeap 1973 Dec 31 23:59:60 + S 434616d0f9Sopenharmony_ciLeap 1974 Dec 31 23:59:60 + S 444616d0f9Sopenharmony_ciLeap 1975 Dec 31 23:59:60 + S 454616d0f9Sopenharmony_ciLeap 1976 Dec 31 23:59:60 + S 464616d0f9Sopenharmony_ciLeap 1977 Dec 31 23:59:60 + S 474616d0f9Sopenharmony_ciLeap 1978 Dec 31 23:59:60 + S 484616d0f9Sopenharmony_ciLeap 1979 Dec 31 23:59:60 + S 494616d0f9Sopenharmony_ciLeap 1981 Jun 30 23:59:60 + S 504616d0f9Sopenharmony_ciLeap 1982 Jun 30 23:59:60 + S 514616d0f9Sopenharmony_ciLeap 1983 Jun 30 23:59:60 + S 524616d0f9Sopenharmony_ciLeap 1985 Jun 30 23:59:60 + S 534616d0f9Sopenharmony_ciLeap 1987 Dec 31 23:59:60 + S 544616d0f9Sopenharmony_ciLeap 1989 Dec 31 23:59:60 + S 554616d0f9Sopenharmony_ciLeap 1990 Dec 31 23:59:60 + S 564616d0f9Sopenharmony_ciLeap 1992 Jun 30 23:59:60 + S 574616d0f9Sopenharmony_ciLeap 1993 Jun 30 23:59:60 + S 584616d0f9Sopenharmony_ciLeap 1994 Jun 30 23:59:60 + S 594616d0f9Sopenharmony_ciLeap 1995 Dec 31 23:59:60 + S 604616d0f9Sopenharmony_ciLeap 1997 Jun 30 23:59:60 + S 614616d0f9Sopenharmony_ciLeap 1998 Dec 31 23:59:60 + S 624616d0f9Sopenharmony_ciLeap 2005 Dec 31 23:59:60 + S 634616d0f9Sopenharmony_ciLeap 2008 Dec 31 23:59:60 + S 644616d0f9Sopenharmony_ciLeap 2012 Jun 30 23:59:60 + S 654616d0f9Sopenharmony_ciLeap 2015 Jun 30 23:59:60 + S 664616d0f9Sopenharmony_ciLeap 2016 Dec 31 23:59:60 + S 674616d0f9Sopenharmony_ci 684616d0f9Sopenharmony_ci# UTC timestamp when this leap second list expires. 694616d0f9Sopenharmony_ci# Any additional leap seconds will come after this. 704616d0f9Sopenharmony_ci# This Expires line is commented out for now, 714616d0f9Sopenharmony_ci# so that pre-2020a zic implementations do not reject this file. 724616d0f9Sopenharmony_ci#Expires 2024 Dec 28 00:00:00 734616d0f9Sopenharmony_ci 744616d0f9Sopenharmony_ci# POSIX timestamps for the data in this file: 754616d0f9Sopenharmony_ci#updated 1704708379 (2024-01-08 10:06:19 UTC) 764616d0f9Sopenharmony_ci#expires 1735344000 (2024-12-28 00:00:00 UTC) 774616d0f9Sopenharmony_ci 784616d0f9Sopenharmony_ci# Updated through IERS Bulletin C (https://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat) 794616d0f9Sopenharmony_ci# File expires on 28 December 2024 80