Heure à Hertford
18:30:10
Lever du soleil: 06:45:21 
Coucher de soleil: 17:39:5202:30:10
21:30:10
15:30:10
00:00:10
12:30:10
02:30:10
23:30:10
02:30:10
02:30:10
00:00:10
21:30:10
02:30:10
00:30:10
03:30:10
15:30:10
Décalage horaire entre Hertford et les grandes villes
+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