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# Allowance for leap seconds added to each time zone file.
# This file is in the public domain.
# This file is generated automatically from the data in the public-domain# NIST/IERS format leap-seconds.list file, which can be copied from# <https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list># or, in a variant with different comments, from# <ftp://ftp.boulder.nist.gov/pub/time/leap-seconds.list>.# For more about leap-seconds.list, please see# The NTP Timescale and Leap Seconds# <https://www.eecis.udel.edu/~mills/leap.html>.
# The rules for leap seconds are specified in Annex 1 (Time scales) of:# Standard-frequency and time-signal emissions.# International Telecommunication Union - Radiocommunication Sector# (ITU-R) Recommendation TF.460-6 (02/2002)# <https://www.itu.int/rec/R-REC-TF.460-6-200202-I/>.# The International Earth Rotation and Reference Systems Service (IERS)# periodically uses leap seconds to keep UTC to within 0.9 s of UT1# (a proxy for Earth's angle in space as measured by astronomers)# and publishes leap second data in a copyrighted file# <https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat>.# See: Levine J. Coordinated Universal Time and the leap second.# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995# <https://ieeexplore.ieee.org/document/7909995>.
# There were no leap seconds before 1972, as no official mechanism# accounted for the discrepancy between atomic time (TAI) and the earth's# rotation. The first ("1 Jan 1972") data line in leap-seconds.list# does not denote a leap second; it denotes the start of the current definition# of UTC.
# All leap-seconds are Stationary (S) at the given UTC time.# The correction (+ or -) is made at the given time, so in the unlikely# event of a negative leap second, a line would look like this:# Leap YEAR MON DAY 23:59:59 - S# Typical lines look like this:# Leap YEAR MON DAY 23:59:60 + SLeap 1972 Jun 30 23:59:60 + SLeap 1972 Dec 31 23:59:60 + SLeap 1973 Dec 31 23:59:60 + SLeap 1974 Dec 31 23:59:60 + SLeap 1975 Dec 31 23:59:60 + SLeap 1976 Dec 31 23:59:60 + SLeap 1977 Dec 31 23:59:60 + SLeap 1978 Dec 31 23:59:60 + SLeap 1979 Dec 31 23:59:60 + SLeap 1981 Jun 30 23:59:60 + SLeap 1982 Jun 30 23:59:60 + SLeap 1983 Jun 30 23:59:60 + SLeap 1985 Jun 30 23:59:60 + SLeap 1987 Dec 31 23:59:60 + SLeap 1989 Dec 31 23:59:60 + SLeap 1990 Dec 31 23:59:60 + SLeap 1992 Jun 30 23:59:60 + SLeap 1993 Jun 30 23:59:60 + SLeap 1994 Jun 30 23:59:60 + SLeap 1995 Dec 31 23:59:60 + SLeap 1997 Jun 30 23:59:60 + SLeap 1998 Dec 31 23:59:60 + SLeap 2005 Dec 31 23:59:60 + SLeap 2008 Dec 31 23:59:60 + SLeap 2012 Jun 30 23:59:60 + SLeap 2015 Jun 30 23:59:60 + SLeap 2016 Dec 31 23:59:60 + S
# UTC timestamp when this leap second list expires.# Any additional leap seconds will come after this.# This Expires line is commented out for now,# so that pre-2020a zic implementations do not reject this file.#Expires 2025 Jun 28 00:00:00
# POSIX timestamps for the data in this file:#updated 1720104763 (2024-07-04 14:52:43 UTC)#expires 1751068800 (2025-06-28 00:00:00 UTC)
# Updated through IERS Bulletin C (https://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat)# File expires on 28 June 2025
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