Columbia Heights時間
03:12:38
日出: 07:52:18 
日落: 18:00:5616:12:38
11:12:38
05:12:38
13:42:38
02:12:38
16:12:38
13:12:38
16:12:38
16:12:38
13:42:38
11:12:38
16:12:38
14:12:38
17:12:38
05:12:38
Columbia Heights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
+1
+0
+0
-1
-2