Teacher and numbers geek Ron Gordon tells me today is Ladybug Day! Gordon finds fun patterns in dates, and today is 10-11-12 (as we write it in the U.S.). The name was inspired by the above song from Sesame Street. The dates corresponding to the first, second, and third lines of the song have already occurred this century, so this is the last one!
Gordon has a couple of contests going about Ladybug Day, which you can read about at his site. Link