Dumai時間
20:22:59
日出: 06:19:00 
日落: 18:20:5321:22:59
16:22:59
10:22:59
18:52:59
07:22:59
21:22:59
18:22:59
21:22:59
21:22:59
18:52:59
16:22:59
21:22:59
19:22:59
22:22:59
10:22:59
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