Backport fix for bug #1643943.
diff --git a/Lib/test/test_strptime.py b/Lib/test/test_strptime.py
index ba65649..56e1ab8 100644
--- a/Lib/test/test_strptime.py
+++ b/Lib/test/test_strptime.py
@@ -463,6 +463,10 @@
"of the year")
test_helper((1917, 12, 31), "Dec 31 on Monday with year starting and "
"ending on Monday")
+ test_helper((2007, 01, 07), "First Sunday of 2007")
+ test_helper((2007, 01, 14), "Second Sunday of 2007")
+ test_helper((2006, 12, 31), "Last Sunday of 2006")
+ test_helper((2006, 12, 24), "Second to last Sunday of 2006")
class CacheTests(unittest.TestCase):