Gumel時間
13:00:49
日出: 06:35:10 
日落: 18:32:1120:00:50
15:00:50
09:00:50
17:30:50
06:00:50
20:00:50
17:00:50
20:00:50
20:00:50
17:30:50
15:00:50
20:00:50
18:00:50
21:00:50
09:00:50
Gumel與主要城市的時差
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+6
+6
+6
+5.5
+5
+5
+5
+5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4
+4
+3.5
+3
+2.5
+2
+2
+2
+2
+2
+2
+2
+1
+1
+1
+1
+0
+0
+0
+0
+0
+0
-1
-1
-1
-4
-4
-4
-4
-5
-6
-6
-6
-7
-9