Heure à Grottaferrata
20:00:47
Lever du soleil: 07:36:39 
Coucher de soleil: 16:50:0103:00:47
22:00:47
16:00:47
00:30:47
13:00:47
03:00:47
00:00:47
03:00:47
03:00:47
00:30:47
22:00:47
03:00:47
01:00:47
04:00:47
16:00:47
Décalage horaire entre Grottaferrata et les grandes villes
+7
+7
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+7
+7
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+7
+7
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+7
+7
+7
+7
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+7
+7
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+5.5
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+5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4.5
+4
+4
+3.5
+3
+2.5
+2
+2
+2
+2
+2
+2
+2
+1
+1
+1
+1
+0
+0
+0
+0
+0
+0
+0
-1
-1
-4
-4
-4
-4
-5
-6
-6
-6
-7
-9