Valkeakoski時間からIbadan時間への変換
19:59:48
-2
17:59:48
+7
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+5
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+2
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+1
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
-6
-6
-7
-7
-7
-8
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-10