pike.git / lib / modules / Calendar.pmod / tzdata / leapseconds

version» Context lines:

pike.git/lib/modules/Calendar.pmod/tzdata/leapseconds:1:   # 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 - # leap-seconds.list file, which can be copied from + # NIST format leap-seconds.list file, which can be copied from   # <ftp://ftp.nist.gov/pub/time/leap-seconds.list> - # or <ftp://ftp.boulder.nist.gov/pub/time/leap-seconds.list> - # or <ftp://tycho.usno.navy.mil/pub/ntp/leap-seconds.list>. + # or <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 International Earth Rotation and Reference Systems Service + # 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 - # (which measures the true angular orientation of the earth in space) + # (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, because the official mechanism - # accounting for the discrepancy between atomic time and the earth's rotation - # did not exist. The first ("1 Jan 1972") data line in leap-seconds.list + # 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.    - # The correction (+ or -) is made at the given time, so lines - # will typically look like: - # Leap YEAR MON DAY 23:59:60 + R/S - # or - # Leap YEAR MON DAY 23:59:59 - R/S -  - # If the leap second is Rolling (R) the given time is local time (unused here). + # 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 + S   Leap 1972 Jun 30 23:59:60 + S   Leap 1972 Dec 31 23:59:60 + S   Leap 1973 Dec 31 23:59:60 + S   Leap 1974 Dec 31 23:59:60 + S   Leap 1975 Dec 31 23:59:60 + S   Leap 1976 Dec 31 23:59:60 + S   Leap 1977 Dec 31 23:59:60 + S   Leap 1978 Dec 31 23:59:60 + S   Leap 1979 Dec 31 23:59:60 + S   Leap 1981 Jun 30 23:59:60 + S
pike.git/lib/modules/Calendar.pmod/tzdata/leapseconds:55:   Leap 1995 Dec 31 23:59:60 + S   Leap 1997 Jun 30 23:59:60 + S   Leap 1998 Dec 31 23:59:60 + S   Leap 2005 Dec 31 23:59:60 + S   Leap 2008 Dec 31 23:59:60 + S   Leap 2012 Jun 30 23:59:60 + S   Leap 2015 Jun 30 23:59:60 + S   Leap 2016 Dec 31 23:59:60 + S      # POSIX timestamps for the data in this file: - #updated 1467936000 - #expires 1577491200 + #updated 1467936000 (2016-07-08 00:00:00 UTC) + #expires 1593302400 (2020-06-28 00:00:00 UTC)    - # Updated through IERS Bulletin C57 - # File expires on: 28 December 2019 + # Updated through IERS Bulletin C58 + # File expires on: 28 June 2020