Bourges時間からDhaka時間への変換
08:46:06
+4
12:46:06
+7
+7
+7
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+6
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+3
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+1.5
+1
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+1
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-1
-1
-1
-1
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-1
-2
-5
-5
-5
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-6
-6
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-9