Don't fret if you missed out on one of the many celebrations around the globe toasting 1234567890 Day, we hear the Unix crowd can get a bit rowdy anyway. Now there's another reason to shed that pocket protector and let loose with your friends - Square Root Day!

You only have nine chances every century to celebrate Square Root Day, with this one falling on 3/3/09 (do the math).

"These days are like calendar comets, you wait and wait and wait for them, then they brighten up your day -- and poof -- they're gone," said Ron Gordonn, a Redwood City teacher.

While we can't understand why there wouldn't already be excitement over the holiday, Gordon started a contest to get people buzzing about the event. The winner, determined by who has the biggest Square Root Day event, will receive (wait for it...) $339.

Miss your chance to celebrate and you'll have to wait until April 4, 2016 for the next Square Root Day.