XKCD is one of my favorite webcomics, and so when I saw the calendar facts comic, I figured I could easily write a function that uses that as a basis. Something simple and fun.
Anyway, I've done so and posted it on my GitHub for this site (click here) for anyone who wants to play around with it. It's pretty easy to extend, change, or do whatever you want with.
I might even be open to extending it if anyone wants to fork it and send me a pull request.
Anyway, just some fun stuff. Enjoy!