Great Falls時間
03:34:14
日出: 07:49:12 
日落: 19:22:0317:34:14
12:34:14
06:34:14
15:04:14
03:34:14
17:34:14
14:34:14
17:34:14
17:34:14
15:04:14
12:34:14
17:34:14
15:34:14
18:34:14
06:34:14
Great Falls與主要城市的時差
+7
+7
+7
+7
+7
+7
+6
+6
+6
+3
+3
+3
+3
+2
+2
+1
+1
+0
-1