Czas Dumai
21:44:41
Wschód słońca: 06:13:54 
Zachód słońca: 18:15:3622:44:41
17:44:41
11:44:41
20:14:41
08:44:41
22:44:41
19:44:41
22:44:41
22:44:41
20:14:41
17:44:41
22:44:41
20:44:41
23:44:41
11:44:41
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
-6
-7
-7
-10
-10
-10
-10
-11
-12
-12
-12