Pottstown時間
19:47:37
日出: 07:00:17 
日落: 17:33:1708:47:37
03:47:37
21:47:37
06:17:37
18:47:37
08:47:37
05:47:37
08:47:37
08:47:37
06:17:37
03:47:37
08:47:37
06:47:37
09:47:37
21:47:37
Pottstown與主要城市的時差
+7
+7
+7
+7
+6
+6
+6
+6
+6
+6
+6
+5
+5
+2
+2
+2
+2
+1
+0
+0
+0
-1
-3