Grefrath時間
07:28:47
日出: 05:25:48 
日落: 21:38:2613:28:47
08:28:47
02:28:47
10:58:47
23:28:47
13:28:47
10:28:47
13:28:47
13:28:47
10:58:47
08:28:47
13:28:47
11:28:47
14:28:47
02:28:47
Grefrath與主要城市的時差
07:28:47
-6
01:28:47
+7
+7
+7
+7
+7
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+5
+5
+5
+4.5
+4
+4
+4
+4
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3
+3
+2.5
+2
+1.5
+1
+1
+1
+1
+1
+1
+1
+1
+1
+0
+0
+0
+0
-1
-1
-1
-1
-1
-1
-2
-5
-5
-5
-6
-6
-6
-7
-7
-8
-9