Umm Qaşr時間からSpringfield時間への変換
04:31:50
-7
21:31:50
+7
+7
+6
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+5
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+2
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+1
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-1
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-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
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-7
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-7
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-10