Calculating working days based on a list

[PninaYehiel]

I need to calculate the  difference between two days that will take into consideration working days which located in table X and the end of the week 

[SASKiwi]

The INTNX function using the WEEKDAY interval will count Mondays through Fridays if that is your definition of working days. If you have custom working days then SAS can work with a holidays dataset.

[PninaYehiel]

And if the working days are from Sunday to Thursday? 

How do i use the data set ?