Riyadh時間からEpping時間への変換
13:10:27
+8
21:10:27
+6
+6
+6
+6
+6
+5
+5
+5
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+1.5
+1
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-3
-3
-6
-6
-6
-6
-7
-8
-8
-8
-9
-11