Atbara時間からMexico City時間への変換
12:55:00
-8
04:55:00
+7
+7
+7
+7
+7
+6
+6
+6
+6
+6
+6
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+3
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+2
+1.5
+1
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-1
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-2
-2
-5
-5
-5
-5
-6
-6
-7
-7
-8
-9