Automatic Password Generation

Had a concept that I wanted to see if there's a way to implement.

I'd like my Windows password to change daily based on an algorithm - For example:

"1234" followed by the day of the month and a number representing the day of the week.

So for Tuesday August 16th, my password would be "1234162"

A pretty secure way of changing your password daily, but being able to derive it mentally.

Anybody know a way to make this happen?

A script should do the trick