diff -Nru tzdata-2020f/africa tzdata-2021a/africa
--- tzdata-2020f/africa	2020-12-10 19:39:46.000000000 -0800
+++ tzdata-2021a/africa	2021-01-19 13:17:42.000000000 -0800
@@ -1527,11 +1527,17 @@
 			3:00	-	EAT	2017 Nov  1
 			2:00	-	CAT
 
+# From Steffen Thorsen (2021-01-18):
+# "South Sudan will change its time zone by setting the clock back 1
+# hour on February 1, 2021...."
+# from https://eyeradio.org/south-sudan-adopts-new-time-zone-makuei/
+
 # South Sudan
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Juba	2:06:28 -	LMT	1931
 			2:00	Sudan	CA%sT	2000 Jan 15 12:00
-			3:00	-	EAT
+			3:00	-	EAT	2021 Feb  1 00:00
+			2:00	-	CAT
 
 # Tanzania
 # See Africa/Nairobi.
diff -Nru tzdata-2020f/debian/changelog tzdata-2021a/debian/changelog
--- tzdata-2020f/debian/changelog	2021-01-08 12:15:38.000000000 -0800
+++ tzdata-2021a/debian/changelog	2021-01-27 14:03:37.000000000 -0800
@@ -1,3 +1,10 @@
+tzdata (2021a-0ubuntu0.14.04+esm1) trusty; urgency=medium
+
+  * New upstream version (LP: #1913482), affecting the following future timestamp:
+    - South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.
+
+ -- Brian Murray <brian@ubuntu.com>  Wed, 27 Jan 2021 14:03:37 -0800
+
 tzdata (2020f-0ubuntu0.14.04+esm1) trusty; urgency=medium
 
   * New upstream version (LP: #1909698), affecting the following timestamp:
diff -Nru tzdata-2020f/leapseconds tzdata-2021a/leapseconds
--- tzdata-2020f/leapseconds	2020-10-25 14:43:49.000000000 -0700
+++ tzdata-2021a/leapseconds	2021-01-09 10:59:03.000000000 -0800
@@ -72,11 +72,11 @@
 # Any additional leap seconds will come after this.
 # This Expires line is commented out for now,
 # so that pre-2020a zic implementations do not reject this file.
-#Expires 2021	Jun	28	00:00:00
+#Expires 2021	Dec	28	00:00:00
 
 # POSIX timestamps for the data in this file:
 #updated 1467936000 (2016-07-08 00:00:00 UTC)
-#expires 1624838400 (2021-06-28 00:00:00 UTC)
+#expires 1640649600 (2021-12-28 00:00:00 UTC)
 
-#	Updated through IERS Bulletin C60
-#	File expires on:  28 June 2021
+#	Updated through IERS Bulletin C61
+#	File expires on:  28 December 2021
diff -Nru tzdata-2020f/leap-seconds.list tzdata-2021a/leap-seconds.list
--- tzdata-2020f/leap-seconds.list	2020-07-09 12:59:05.000000000 -0700
+++ tzdata-2021a/leap-seconds.list	2021-01-09 10:59:02.000000000 -0800
@@ -204,10 +204,10 @@
 #	current -- the update time stamp, the data and the name of the file
 #	will not change.
 #
-#	Updated through IERS Bulletin C60
-#	File expires on:  28 June 2021
+#	Updated through IERS Bulletin C61
+#	File expires on:  28 December 2021
 #
-#@	3833827200
+#@	3849638400
 #
 2272060800	10	# 1 Jan 1972
 2287785600	11	# 1 Jul 1972
@@ -252,4 +252,4 @@
 #	the hash line is also ignored in the
 #	computation.
 #
-#h 	064356a8 39268b92 76e4d5ef 3e22fae1 0cca529c
+#h 	2ab8253d d4380d28 75f01343 381504f8 8f8a4bfc
diff -Nru tzdata-2020f/NEWS tzdata-2021a/NEWS
--- tzdata-2020f/NEWS	2020-12-29 00:18:57.000000000 -0800
+++ tzdata-2021a/NEWS	2021-01-24 11:06:02.000000000 -0800
@@ -1,5 +1,13 @@
 News for the tz database
 
+Release 2021a - 2021-01-24 10:54:57 -0800
+
+  Changes to future timestamps
+
+    South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.
+    (Thanks to Steffen Thorsen.)
+
+
 Release 2020f - 2020-12-29 00:17:46 -0800
 
   Change to build procedure
diff -Nru tzdata-2020f/version tzdata-2021a/version
--- tzdata-2020f/version	2020-12-29 00:18:58.000000000 -0800
+++ tzdata-2021a/version	2021-01-24 11:06:03.000000000 -0800
@@ -1 +1 @@
-2020f
+2021a