Chunian時間からIbadan時間への変換
15:58:48
-4
11:58:48
+5
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+4
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+3
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-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-3
-3
-3
-3
-4
-4
-4
-4
-4
-4
-5
-8
-8
-8
-9
-9
-9
-10
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-11
-12