Columbus時間
13:00:30
日出: 07:52:19 
日落: 17:29:1202:00:30
21:00:30
15:00:30
23:30:30
12:00:30
02:00:30
23:00:30
02:00:30
02:00:30
23:30:30
21:00:30
02:00:30
00:00:30
03:00:30
15:00:30
Columbus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