Wau時間からIbadan時間への変換
18:25:43
-1
17:25:43
+7
+7
+7
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+7
+6
+6
+6
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+3
+3
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+2
+1.5
+1
+1
+1
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+0
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-1
-1
-1
-1
-1
-1
-1
-2
-2
-5
-5
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-6
-7
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-10