Grand Rapids時間
22:35:37
日出: 07:00:09 
日落: 20:29:0610:35:37
05:35:37
23:35:37
08:05:37
20:35:37
10:35:37
07:35:37
10:35:37
10:35:37
08:05:37
05:35:37
10:35:37
08:35:37
11:35:37
23:35:37
Grand Rapids與主要城市的時差
+7
+7
+7
+7
+7
+7
+7
+7
+7
+6
+6
+6
+6
+5
+5
+5
+5
+5
+5
+4
+1
+1
+1
+0
+0
+0
-1
-1
-2
-3