Import tzdata 2017cvendor/tzdata/tzdata2017c

1 files changed, 8 insertions, 9 deletions

diff --git a/leapseconds b/leapseconds
index 1ebf70fcf61e..a191d5f535a5 100644
--- a/leapseconds
+++ b/leapseconds
@@ -3,19 +3,18 @@
 # 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.
-# See <http://tf.nist.gov/tf-cgi/servers.cgi> for a list of secondary servers.
+# leap-seconds.list file, which is copied from:
+# ftp://ftp.nist.gov/pub/time/leap-seconds.list
 # For more about leap-seconds.list, please see
 # The NTP Timescale and Leap Seconds
-# http://www.eecis.udel.edu/~mills/leap.html
+# https://www.eecis.udel.edu/~mills/leap.html
 
 # The International Earth Rotation and Reference Systems Service
 # 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); see
-# Terry J Quinn, The BIPM and the accurate measure of time,
-# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>.
+# Levine J. Coordinated Universal Time and the leap second.
+# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995
+# http://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 until the early 1970s.
@@ -58,5 +57,5 @@ Leap	2012	Jun	30	23:59:60	+	S
 Leap	2015	Jun	30	23:59:60	+	S
 Leap	2016	Dec	31	23:59:60	+	S
 
-#	Updated through IERS Bulletin C53
-#	File expires on:  28 December 2017
+#	Updated through IERS Bulletin C54
+#	File expires on:  28 June 2018