Hertfordの時間
18:53:37
日の出: 06:53:58 
日没: 17:32:4102:53:37
21:53:37
15:53:37
00:23:37
12:53:37
02:53:37
23:53:37
02:53:37
02:53:37
00:23:37
21:53:37
02:53:37
00:53:37
03:53:37
15:53:37
Hertfordと主要都市の時差
+7
+7
+7
+6.5
+6
+6
+6
+6
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5
+5
+4.5
+4
+3.5
+3
+3
+3
+3
+3
+3
+3
+2
+2
+2
+2
+1
+1
+1
+1
+1
+1
+0
+0
+0
-3
-3
-3
-3
-4
-5
-5
-5
-6
-8