Porto時間
18:37:41
日出: 07:13:02 
日落: 18:21:3202:37:41
21:37:41
15:37:41
00:07:41
12:37:41
02:37:41
23:37:41
02:37:41
02:37:41
00:07:41
21:37:41
02:37:41
00:37:41
03:37:41
15:37:41
Porto與主要城市的時差
+7
+7
+7
+6.5
+6
+6
+6
+6
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5.5
+5
+5
+4.5
+4
+3.5
+3
+3
+3
+3
+3
+3
+3
+2
+2
+2
+2
+1
+1
+1
+1
+1
+1
+0
+0
+0
-3
-3
-3
-3
-4
-5
-5
-5
-6
-8