What I want to do is so you have a list of random dates, it will never be the same so it has to be a universal formula, but you get any date, any date of the year and then e
=IF(WEEKDAY(A1) < 5, A1+5-WEEKDAY(A1), A1+5+7-WEEKDAY(A1))
Will give you the next Thursday from the date given in Cell A1 in Excel. If the input date is a Thursday, it will give the next Thursday.
Use <= in the conditional if you want to display the input Thursday when given a Thursday, rather than displaying the next Thursday.