David時間
05:11:30
日出: 06:40:55 
日落: 18:19:0518:11:30
13:11:30
07:11:30
15:41:30
04:11:30
18:11:30
15:11:30
18:11:30
18:11:30
15:41:30
13:11:30
18:11:30
16:11:30
19:11:30
07:11:30
David與主要城市的時差
+7
+7
+7
+7
+6
+6
+6
+6
+6
+6
+6
+5
+5
+2
+2
+2
+2
+1
+0
+0
+0
-1
-3