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.  Oracle designates this
   7 # particular file as subject to the "Classpath" exception as provided
   8 # by Oracle in the LICENSE file that accompanied this code.
   9 #
  10 # This code is distributed in the hope that it will be useful, but WITHOUT
  11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13 # version 2 for more details (a copy is included in the LICENSE file that
  14 # accompanied this code).
  15 #
  16 # You should have received a copy of the GNU General Public License version
  17 # 2 along with this work; if not, write to the Free Software Foundation,
  18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19 #
  20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21 # or visit www.oracle.com if you need additional information or have any
  22 # questions.
  23 #
  24 # Allowance for leap seconds added to each time zone file.
  25 
  26 # This file is in the public domain.
  27 
  28 # This file is generated automatically from the data in the public-domain
  29 # leap-seconds.list file available from most NIST time servers.
  30 # If the URL <ftp://time.nist.gov/pub/leap-seconds.list> does not work,
  31 # you should be able to pick up leap-seconds.list from a secondary NIST server.
  32 # See <http://tf.nist.gov/tf-cgi/servers.cgi> for a list of secondary servers.
  33 # For more about leap-seconds.list, please see
  34 # The NTP Timescale and Leap Seconds
  35 # http://www.eecis.udel.edu/~mills/leap.html
  36 
  37 # The International Earth Rotation and Reference Systems Service
  38 # periodically uses leap seconds to keep UTC to within 0.9 s of UT1
  39 # (which measures the true angular orientation of the earth in space); see
  40 # Terry J Quinn, The BIPM and the accurate measure of time,
  41 # Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>.
  42 # There were no leap seconds before 1972, because the official mechanism
  43 # accounting for the discrepancy between atomic time and the earth's rotation
  44 # did not exist until the early 1970s.
  45 
  46 # The correction (+ or -) is made at the given time, so lines
  47 # will typically look like:
  48 #       Leap    YEAR    MON     DAY     23:59:60        +       R/S
  49 # or
  50 #       Leap    YEAR    MON     DAY     23:59:59        -       R/S
  51 
  52 # If the leapsecond is Rolling (R) the given time is local time.
  53 # If the leapsecond is Stationary (S) the given time is UTC.
  54 
  55 # Leap  YEAR    MONTH   DAY     HH:MM:SS        CORR    R/S
  56 Leap    1972    Jun     30      23:59:60        +       S
  57 Leap    1972    Dec     31      23:59:60        +       S
  58 Leap    1973    Dec     31      23:59:60        +       S
  59 Leap    1974    Dec     31      23:59:60        +       S
  60 Leap    1975    Dec     31      23:59:60        +       S
  61 Leap    1976    Dec     31      23:59:60        +       S
  62 Leap    1977    Dec     31      23:59:60        +       S
  63 Leap    1978    Dec     31      23:59:60        +       S
  64 Leap    1979    Dec     31      23:59:60        +       S
  65 Leap    1981    Jun     30      23:59:60        +       S
  66 Leap    1982    Jun     30      23:59:60        +       S
  67 Leap    1983    Jun     30      23:59:60        +       S
  68 Leap    1985    Jun     30      23:59:60        +       S
  69 Leap    1987    Dec     31      23:59:60        +       S
  70 Leap    1989    Dec     31      23:59:60        +       S
  71 Leap    1990    Dec     31      23:59:60        +       S
  72 Leap    1992    Jun     30      23:59:60        +       S
  73 Leap    1993    Jun     30      23:59:60        +       S
  74 Leap    1994    Jun     30      23:59:60        +       S
  75 Leap    1995    Dec     31      23:59:60        +       S
  76 Leap    1997    Jun     30      23:59:60        +       S
  77 Leap    1998    Dec     31      23:59:60        +       S
  78 Leap    2005    Dec     31      23:59:60        +       S
  79 Leap    2008    Dec     31      23:59:60        +       S
  80 Leap    2012    Jun     30      23:59:60        +       S
  81 Leap    2015    Jun     30      23:59:60        +       S
  82 
  83 #       Updated through IERS Bulletin C51
  84 #       File expires on:  28 December 2016
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