Not all of you may know it, but today is **Pi Day 2010**! Now, I do not really have to explain to you the reason behind today being Pi Day, do I? In case the obvious is lost on you, check the date. Today is March 14, 2010. In figures, that 3/14/2010. Now you’re catching on…

The official web site for this holiday can be found at Pi Day. Just to refresh your memory, here is a little something from the official web site:

Pi, Greek letter ( ), is the symbol for the ratio of the circumference of a circle to its diameter. Pi Day is celebrated by math enthusiasts around the world on March 14th. Pi = 3.1415926535…

With the use of computers, Pi has been calculated to over 1 trillion digits past the decimal. Pi is an irrational number meaning it will continue infinitely without repeating. The symbol for pi was first used in 1706 by William Jones, but was popular after it was adopted by the Swiss mathematician Leonhard Euler in 1737.

Through the web site, you can actually send a greeting to your geeky friends who would love to celebrate Pi Day with you. The options via an eCard, via Twitter, or via Facebook. Whichever venue you choose, you will be sure to impress those who care.

Here’s another piece of trivia – today is Albert Einstein’s birthday as well! Now how’s that for coincidence? Check out your local geek hangouts; there’s probably free pie going around. No pun intended.

Dora says

Hope you guys had some pie (or PI ) today! ;)

PIE DAY 3.14 says

Hi pie day is the stupidist day on earth who even came up with pie day

banana says

hi pi day is so awesome!

PI DAY says

3.14 is a dumb day for pie and this is a stupid day to even think about pie pie pie pie pie!!!!!!!!!!!!!!!!

pi day says

this is a very signifant day for 3.14

Chris says

Or… It’s Mother’s day in England.

Pi Guy says

Can’t wait for 3.14 (North America)! I like the graphic you posted! I have a t-shirt with the same Image I got at mathematicianspictures.com. Gonna sport the shirt, eat some Pi and watch some pi day related videos online!