Riyadh時間からCuenca時間への変換
04:57:10
+5
09:57:10
+6
+6
+6
+6
+6
+5
+5
+5
+5
+5
+5
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+5
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+2.5
+2.5
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+2
+2
+1.5
+1
+0.5
+0
+0
+0
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+0
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-3
-3
-6
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-6
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-8
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-9
-11