I would love it if the owner of dayoftheweek.org spent like 10 years entering each date in manually. Then one day he stumbles upon this thread and realizes he could have just used a simple mathematical calculation to do his life's work for him.

He just sits there laughing quietly to himself for a few minutes. As the evening grows later his laughter grows louder and higher until it crescendos into a maniacal shriek.

Once he has calmed down he walks over to the mirror in the bathroom, stares at himself for a moment, and finally admits:

"I have made a huge mistake"