Heure à Ōkawa
20:37:06
Lever du soleil: 07:06:07 
Coucher de soleil: 17:59:1519:37:06
14:37:06
08:37:06
17:07:06
05:37:06
19:37:06
16:37:06
19:37:06
19:37:06
17:07:06
14:37:06
19:37:06
17:37:06
20:37:06
08:37:06
Décalage horaire entre Ōkawa et les grandes villes
+2
+2
+0
+0
+0
+0
+0
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-2
-2
-2
-3
-3
-3
-3
-4
-4
-5
-6
-6
-6
-6
-6
-6
-6
-7
-7
-7
-7
-8
-8
-8
-8
-8
-8
-8
-9
-9
-12
-12
-12
-12