make/data/tzdata/leapseconds
changeset 47216 71c04702a3d5
parent 44118 800a6450f7d4
child 47724 6b374b7fdc3d
equal deleted inserted replaced
47215:4ebc2e2fb97c 47216:71c04702a3d5
       
     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 Leap	2016	Dec	31	23:59:60	+	S
       
    83 
       
    84 #	Updated through IERS Bulletin C53
       
    85 #	File expires on:  28 December 2017