Calendar, Counting

Question

My co-workers are constantly counting eight days and then going to the next Tuesday or Thrusday to let our clients know when the products will load. Some clients only load on Monday, or Wednesday or blah blah.
I was wondering if I could write a program that would use counting and verify day of the week (Thrusday)? I mean without getting out a calendar and going year by year. I think this should be simple, but before I spends hours.... could somebody let me know if that is right. Fairly simple program right?