Najrān時間からPiet Retief時間への変換
13:31:30
-1
12:31:30
+7
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+6
+6
+6
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+5
+5
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+2
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+1
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
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-10