List of values for prior period

I would like to schedule a daily report for 3 different date range criteria.report runs every day.It should produce data separately for last 24 hours ,48 hours and 72 hours separately.i would like to avoid manual schedules with start date and end date.One report should work for last 24 hours ,48 hours and 72 hours separately.So ,I would like to create an object in the universe which will produce list of values for Prior day ,last 2 days and last 3 days .

I am also looking for last week and last month(optional) .Could you please suggest me the best approach for this

other wise i have to go for 3 individual reports which will work for last 24 hours ,48 hours and 72 hours

The database I am using is oracle.Business Objects is 4.0