source: appstream-generator/contrib/setup/js_tmp/Flot/examples/axes-time-zones/tz/leapseconds @ 4841

Last change on this file since 4841 was 4841, checked in by Juanma, 2 years ago

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1# <pre>
2# This file is in the public domain, so clarified as of
3# 2009-05-17 by Arthur David Olson.
4
5# Allowance for leapseconds added to each timezone file.
6
7# The International Earth Rotation Service periodically uses leap seconds
8# to keep UTC to within 0.9 s of UT1
9# (which measures the true angular orientation of the earth in space); see
10# Terry J Quinn, The BIPM and the accurate measure of time,
11# Proc IEEE 79, 7 (July 1991), 894-905.
12# There were no leap seconds before 1972, because the official mechanism
13# accounting for the discrepancy between atomic time and the earth's rotation
14# did not exist until the early 1970s.
15
16# The correction (+ or -) is made at the given time, so lines
17# will typically look like:
18#       Leap    YEAR    MON     DAY     23:59:60        +       R/S
19# or
20#       Leap    YEAR    MON     DAY     23:59:59        -       R/S
21
22# If the leapsecond is Rolling (R) the given time is local time
23# If the leapsecond is Stationary (S) the given time is UTC
24
25# Leap  YEAR    MONTH   DAY     HH:MM:SS        CORR    R/S
26Leap    1972    Jun     30      23:59:60        +       S
27Leap    1972    Dec     31      23:59:60        +       S
28Leap    1973    Dec     31      23:59:60        +       S
29Leap    1974    Dec     31      23:59:60        +       S
30Leap    1975    Dec     31      23:59:60        +       S
31Leap    1976    Dec     31      23:59:60        +       S
32Leap    1977    Dec     31      23:59:60        +       S
33Leap    1978    Dec     31      23:59:60        +       S
34Leap    1979    Dec     31      23:59:60        +       S
35Leap    1981    Jun     30      23:59:60        +       S
36Leap    1982    Jun     30      23:59:60        +       S
37Leap    1983    Jun     30      23:59:60        +       S
38Leap    1985    Jun     30      23:59:60        +       S
39Leap    1987    Dec     31      23:59:60        +       S
40Leap    1989    Dec     31      23:59:60        +       S
41Leap    1990    Dec     31      23:59:60        +       S
42Leap    1992    Jun     30      23:59:60        +       S
43Leap    1993    Jun     30      23:59:60        +       S
44Leap    1994    Jun     30      23:59:60        +       S
45Leap    1995    Dec     31      23:59:60        +       S
46Leap    1997    Jun     30      23:59:60        +       S
47Leap    1998    Dec     31      23:59:60        +       S
48Leap    2005    Dec     31      23:59:60        +       S
49Leap    2008    Dec     31      23:59:60        +       S
50Leap    2012    Jun     30      23:59:60        +       S
51
52# INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
53#
54# SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
55#
56#
57# SERVICE DE LA ROTATION TERRESTRE
58# OBSERVATOIRE DE PARIS
59# 61, Av. de l'Observatoire 75014 PARIS (France)
60# Tel.      : 33 (0) 1 40 51 22 26
61# FAX       : 33 (0) 1 40 51 22 91
62# e-mail    : (E-Mail Removed)
63# http://hpiers.obspm.fr/eop-pc
64#
65# Paris, 5 January 2012
66#
67#
68# Bulletin C 43
69#
70# To authorities responsible
71# for the measurement and
72# distribution of time
73#
74#
75# UTC TIME STEP
76# on the 1st of July 2012
77#
78#
79# A positive leap second will be introduced at the end of June 2012.
80# The sequence of dates of the UTC second markers will be:
81#
82#                          2012 June 30,     23h 59m 59s
83#                          2012 June 30,     23h 59m 60s
84#                          2012 July  1,      0h  0m  0s
85#
86# The difference between UTC and the International Atomic Time TAI is:
87#
88# from 2009 January 1, 0h UTC, to 2012 July 1  0h UTC  : UTC-TAI = - 34s
89# from 2012 July 1,    0h UTC, until further notice    : UTC-TAI = - 35s
90#
91# Leap seconds can be introduced in UTC at the end of the months of December
92# or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
93# six months, either to announce a time step in UTC or to confirm that there
94# will be no time step at the next possible date.
95#
96#
97# Daniel GAMBIS
98# Head
99# Earth Orientation Center of IERS
100# Observatoire de Paris, France
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