Filtering specific individual dates in PivotTables with changing input

How do I filter data for specific individual dates in a PivotTable? The input is changed on a weekly basis and therefore the specific desired dates will change every week. I have data for every business day. And I want to retrieve data from the most recent business day, 5 business days before that, 30 business days before that and 90 business days before that. How do I go about this?

I don't remeber if it exist in Ex2010 but ....

On date column in Pivot Table select drop-down arrow then select Date Filters and choose what you want or define your own.