Backport PR matplotlib#31780: Update timezone test to only use past dates

Author: jklymak

lib/matplotlib/tests/test_dates.py

@@ -890,13 +890,13 @@ def _create_auto_date_locator(date1, date2, tz):
         locator.axis.set_view_interval(*mdates.date2num([date1, date2]))
         return locator
 
-    results = ([datetime.timedelta(weeks=52*200),
-                ['1980-01-01 00:00:00-08:00', '2000-01-01 00:00:00-08:00',
-                 '2020-01-01 00:00:00-08:00', '2040-01-01 00:00:00-08:00',
-                 '2060-01-01 00:00:00-08:00', '2080-01-01 00:00:00-08:00',
-                 '2100-01-01 00:00:00-08:00', '2120-01-01 00:00:00-08:00',
-                 '2140-01-01 00:00:00-08:00', '2160-01-01 00:00:00-08:00',
-                 '2180-01-01 00:00:00-08:00', '2200-01-01 00:00:00-08:00']
+    results = ([datetime.timedelta(weeks=52*20),
+                ['1996-01-01 00:00:00-08:00', '1998-01-01 00:00:00-08:00',
+                 '2000-01-01 00:00:00-08:00', '2002-01-01 00:00:00-08:00',
+                 '2004-01-01 00:00:00-08:00', '2006-01-01 00:00:00-08:00',
+                 '2008-01-01 00:00:00-08:00', '2010-01-01 00:00:00-08:00',
+                 '2012-01-01 00:00:00-08:00', '2014-01-01 00:00:00-08:00',
+                 '2016-01-01 00:00:00-08:00']
                 ],
                [datetime.timedelta(weeks=52),
                 ['1997-01-01 00:00:00-08:00', '1997-02-01 00:00:00-08:00',