The problem with having a day off of work in the middle of the week is that you have:
Two Fridays: (Tuesday and Friday) (After this day you don't have to work)
Two Mondays: (Monday and Thursday) (You have just come off of not working)
Two Thursdays (Monday and Thursday): (You have two days till you don't have to work)
All in all this leads to a very confusing week.