Riyadh時間からJekulo時間への変換
16:43:36
+4
20:43:36
+6
+6
+6
+6
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+5
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+2
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+1.5
+1
+0.5
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-3
-3
-6
-6
-6
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-8
-9
-11