Simple Zeller's congruence to get day of week

[TDarcos]

Forget what I just said, I take the whole thing back, except for the thanks for telling me. They are errors, at least the first one is, and I know exactly how I did it. I don't know about you, but when I have a piece of code that will do the exact same function in another place, I will copy, paste, then change to fit the new circumstances. I take full responsibility for the error. I should have checked more closely that the output is correct, and if I hadn't been sloppy, I would have noticed. That is not an excuse, by the way, as I said, I take full responsibility, I made the mistake, included an error where I shouldn't have, and I will fix it.

I guess it proves that my signature is right!