Updated ``Leap_Second.dat`` data file

CHANGELOG.md

@@ -5,6 +5,8 @@
 * Added ``expiration_limit`` argument for ``get_skyfield_data_path`` function. Enables to shift the expiration date limit by "n" days.
 * USNO file serving host has changed. Pointing now at ``ftp://cddis.nasa.gov/products/iers/`` for ``deltat.*`` files.
 * Updated ``deltat.data`` data file.
+* Updated ``Leap_Second.dat`` data file.
+* All expiration data items are also up-to-date as of 2020-05-05.
 
 ## 0.1.0 (2019-10-04)
 

skyfield_data/data/Leap_Second.dat

@@ -1,10 +1,10 @@
 #  Value of TAI-UTC in second valid beetween the initial value until
 #  the epoch given on the next line. The last line reads that NO
 #  leap second was introduced since the corresponding date 
-#  Updated through IERS Bulletin 58 issued in July 2019
+#  Updated through IERS Bulletin 59 issued in January 2020
 #  
 #
-#  File expires on 28 June 2020
+#  File expires on 28 December 2020
 #
 #
 #    MJD        Date        TAI-UTC (s)

skyfield_data/expiration_data.py

@@ -1,3 +1,3 @@
 import datetime
 
-EXPIRATIONS = {'de421.bsp': datetime.date(2053, 10, 8), 'deltat.data': datetime.date(2021, 2, 1), 'deltat.preds': datetime.date(2021, 1, 1), 'Leap_Second.dat': datetime.date(2020, 7, 28)}
+EXPIRATIONS = {'de421.bsp': datetime.date(2053, 10, 8), 'deltat.data': datetime.date(2021, 2, 1), 'deltat.preds': datetime.date(2021, 1, 1), 'Leap_Second.dat': datetime.date(2021, 1, 27)}