[utils] Lower priority for rare date formats and add tests

test/test_utils.py

@@ -292,6 +292,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(unified_strdate('25-09-2014'), '20140925')
         self.assertEqual(unified_strdate('27.02.2016 17:30'), '20160227')
         self.assertEqual(unified_strdate('UNKNOWN DATE FORMAT'), None)
+        self.assertEqual(unified_strdate('Feb 7, 2016 at 6:35 pm'), '20160207')
 
     def test_unified_timestamps(self):
         self.assertEqual(unified_timestamp('December 21, 2010'), 1292889600)
@@ -312,6 +313,7 @@ class TestUtil(unittest.TestCase):
         self.assertEqual(unified_timestamp('27.02.2016 17:30'), 1456594200)
         self.assertEqual(unified_timestamp('UNKNOWN DATE FORMAT'), None)
         self.assertEqual(unified_timestamp('May 16, 2016 11:15 PM'), 1463440500)
+        self.assertEqual(unified_timestamp('Feb 7, 2016 at 6:35 pm'), 1454870100)
 
     def test_determine_ext(self):
         self.assertEqual(determine_ext('http://example.com/foo/bar.mp4/?download'), 'mp4')

youtube_dl/utils.py

@@ -124,8 +124,6 @@ DATE_FORMATS = (
     '%d %b %Y',
     '%B %d %Y',
     '%b %d %Y',
-    '%b %d %Y at %H:%M',
-    '%b %d %Y at %H:%M:%S',
     '%b %dst %Y %I:%M',
     '%b %dnd %Y %I:%M',
     '%b %dth %Y %I:%M',
@@ -144,6 +142,8 @@ DATE_FORMATS = (
     '%Y-%m-%dT%H:%M:%S',
     '%Y-%m-%dT%H:%M:%S.%f',
     '%Y-%m-%dT%H:%M',
+    '%b %d %Y at %H:%M',
+    '%b %d %Y at %H:%M:%S',
 )
 
 DATE_FORMATS_DAY_FIRST = list(DATE_FORMATS)