Kitama時間からMernda時間への変換
07:48:36
+7
14:48:36
+7
+7
+6
+6
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+5
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+0
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-1
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-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
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-6
-6
-7
-7
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-10