Groningenの時間
06:18:25
日の出: 06:31:58 
日没: 20:39:3312:18:25
07:18:25
01:18:25
09:48:25
22:18:25
12:18:25
09:18:25
12:18:25
12:18:25
09:48:25
07:18:25
12:18:25
10:18:25
13:18:25
01:18:25
Groningenと主要都市の時差
+7
+7
+7
+7
+7
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
+6
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+6
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+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