Czas Dumai
18:44:25
Wschód słońca: 06:24:41 
Zachód słońca: 18:29:3319:44:25
14:44:25
08:44:25
17:14:25
05:44:25
19:44:25
16:44:25
19:44:25
19:44:25
17:14:25
14:44:25
19:44:25
17:44:25
20:44:25
08:44:25
Różnica czasu między Dumai a większymi miastami
+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
-7
-7
-7
-10
-10
-10
-10
-11
-12
-12
-12