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Time DeltaProblem link : https://www.hackerrank.com/challenges/python-time-delta/problemDifficulty : MediumTipFirst of all, we should convert timestamp string to datetimeWe should write a format string, to describe the meaning of timestamp string For example, 'Sun' means the Sunday, to convert 'Sun' to Sunday(as a part of datetime), format string should be '%a'datetime is good class to convert w..