That's always true regardless of the day of the week. It's a good reason to be optimistic. I never thought about that.
When you've been covered in paint, shaving cream, feces, glue, and other such things every day for the past four years, you start to find any excuse to look ahead.

THE GOOD: Jen's having her baby on Tuesday!
THE BAD?: I'm going to have the "worst migraine ever" that day, so I'll have to miss work. Maybe even go to a hospital that day...too bad.

THE GOOD: I hear a golden retriever shuffling about in the hallway, doing her "abused puppy cry," which means that she grabbed something off the counter that she wasn't supposed to have. Sigh. I better go check on her...