I've worked so many days in a row that I forgot it was Friday

I have a battle rhythm that I have on my desktop to remind me of various tasks and reports that I need to complete and which day they're due.  My boss called me up today to remind me of a tasker I had outstanding.  I said "That's due tomorrow, isn't it?" 

Boss:  "Dave, it's Friday.  It's due today."

Me:  "Well, SHIT!"

Boss:  "Get it to me when you can."

I got it turned in, just a wee bit over-due.