Grand Rapids時間
04:11:30
日出: 08:03:54 
日落: 17:46:0917:11:30
12:11:30
06:11:30
14:41:30
03:11:30
17:11:30
14:11:30
17:11:30
17:11:30
14:41:30
12:11:30
17:11:30
15:11:30
18:11:30
06:11:30
Grand Rapids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