leapseconds 3.3 KB
Newer Older
S
sherman 已提交
1 2
#
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
S
sherman 已提交
3
#
S
sherman 已提交
4 5 6 7 8
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation.  Oracle designates this
# particular file as subject to the "Classpath" exception as provided
# by Oracle in the LICENSE file that accompanied this code.
S
sherman 已提交
9
#
S
sherman 已提交
10 11 12 13 14
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
S
sherman 已提交
15
#
S
sherman 已提交
16 17 18
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
S
sherman 已提交
19
#
S
sherman 已提交
20 21 22
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
A
aefimov 已提交
23
#
A
aefimov 已提交
24
# Allowance for leap seconds added to each time zone file.
S
sherman 已提交
25

A
aefimov 已提交
26 27 28 29 30 31 32 33
# This file is in the public domain.

# This file is generated automatically from the data in the public-domain
# leap-seconds.list file available from most NIST time servers.
# If the URL <ftp://time.nist.gov/pub/leap-seconds.list> does not work,
# you should be able to pick up leap-seconds.list from a secondary NIST server.
# For more about leap-seconds.list, please see
# The NTP Timescale and Leap Seconds
A
aefimov 已提交
34
# http://www.eecis.udel.edu/~mills/leap.html
A
aefimov 已提交
35

A
aefimov 已提交
36 37
# The International Earth Rotation and Reference Systems Service
# periodically uses leap seconds to keep UTC to within 0.9 s of UT1
S
sherman 已提交
38 39
# (which measures the true angular orientation of the earth in space); see
# Terry J Quinn, The BIPM and the accurate measure of time,
A
aefimov 已提交
40
# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>.
S
sherman 已提交
41 42 43 44 45 46 47 48 49 50
# 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 until the early 1970s.

# 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

A
aefimov 已提交
51 52
# If the leapsecond is Rolling (R) the given time is local time.
# If the leapsecond is Stationary (S) the given time is UTC.
S
sherman 已提交
53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

# Leap	YEAR	MONTH	DAY	HH:MM:SS	CORR	R/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
Leap	1982	Jun	30	23:59:60	+	S
Leap	1983	Jun	30	23:59:60	+	S
Leap	1985	Jun	30	23:59:60	+	S
Leap	1987	Dec	31	23:59:60	+	S
Leap	1989	Dec	31	23:59:60	+	S
Leap	1990	Dec	31	23:59:60	+	S
Leap	1992	Jun	30	23:59:60	+	S
Leap	1993	Jun	30	23:59:60	+	S
Leap	1994	Jun	30	23:59:60	+	S
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
A
aefimov 已提交
80 81 82 83
Leap	2015	Jun	30	23:59:60	+	S

#	Updated through IERS Bulletin C49
#	File expires on:  28 December 2015