Heure à Helena
18:11:55
Lever du soleil: 07:45:08 
Coucher de soleil: 18:42:5308:11:55
03:11:55
21:11:55
05:41:55
18:11:55
08:11:55
05:11:55
08:11:55
08:11:55
05:41:55
03:11:55
08:11:55
06:11:55
09:11:55
21:11:55
Décalage horaire entre Helena et les grandes villes
+7
+7
+7
+7
+7
+7
+6
+3
+3
+3
+3
+2
+2
+1
+1
+0
-1