Dumai時間
15:19:11
日出: 06:26:34 
日落: 18:30:1616:19:11
11:19:11
05:19:11
13:49:11
02:19:11
16:19:11
13:19:11
16:19:11
16:19:11
13:49:11
11:19:11
16:19:11
14:19:11
17:19:11
05:19:11
Dumai與主要城市的時差
+4
+4
+2
+2
+2
+2
+2
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+0
+0
+0
-1
-1
-1
-1
-2
-2
-3
-4
-4
-4
-4
-4
-4
-4
-5
-5
-5
-5
-6
-6
-6
-6
-6
-6
-6
-7
-7
-10
-10
-10
-10
-11
-12
-12
-12