diff --git a/Lib/test/test_calendar.py b/Lib/test/test_calendar.py
index 6241d114d33..d6170c7e814 100644
--- a/Lib/test/test_calendar.py
+++ b/Lib/test/test_calendar.py
@@ -595,6 +595,14 @@ class CalendarTestCase(unittest.TestCase):
                 self.assertEqual(days[0][1], firstweekday)
                 self.assertEqual(days[-1][1], (firstweekday - 1) % 7)
 
+    def test_iterweekdays(self):
+        week0 = list(range(7))
+        for firstweekday in range(7):
+            cal = calendar.Calendar(firstweekday)
+            week = list(cal.iterweekdays())
+            expected = week0[firstweekday:] + week0[:firstweekday]
+            self.assertEqual(week, expected)
+
 
 class MonthCalendarTestCase(unittest.TestCase):
     def setUp(self):
diff --git a/Misc/ACKS b/Misc/ACKS
index d043195a7b5..d8bb5e46501 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1840,6 +1840,7 @@ Jacob Walls
 Kevin Walzer
 Rodrigo Steinmuller Wanderley
 Dingyuan Wang
+Jiahua Wang
 Ke Wang
 Liang-Bo Wang
 Greg Ward