Wednesday Going on Friday

In a three day school week everyday is like Wednesday. On Monday there are only two days left, so Monday is the third day before the weeks end, so it is like Wednesday. Tuesday is the middle of the school week, so it is like Wednesday. Wednesday is of course Wednesday. Tomorrow is Wednesday, but the last day I work this week so it is like Friday. There is something special about Fridays. I am looking forward to tomorrow. If I go to bed now and sleep well, when I wake up it will be Wednesday which is like Friday this week. Unfortunately, I have two loads of clothes to finish and gravy to put away. How did this Tuesday get in my week?