Risca時間
17:10:17
日出: 07:30:19 
日落: 18:27:4800:10:17
19:10:17
13:10:17
21:40:17
10:10:17
00:10:17
21:10:17
00:10:17
00:10:17
21:40:17
19:10:17
00:10:17
22:10:17
01:10:17
13:10:17
Risca與主要城市的時差
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+7
+6
+6
+6
+5.5
+5
+5
+5
+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
+2
+2
+1
+1
+1
+1
+0
+0
+0
+0
+0
+0
-1
-4
-4
-4
-4
-5
-5
-6
-6
-7
-8