If you haven’t opened up a math book this decade, Pi is the ratio of the circumference of a circle to its diameter. Pi can go on forever – 3.14159265358979323846… is just some digits for you. With the use of computers, Pi has been calculated to over 1 trillion digits past the decimal.
If you’re really feeling festive and nerdy today you’ll celebrate this on March 14 at approximately 1:59 today!
For more information about Pi Day and to send out an ecard or buy a shirt or a crazy Pi clock – check out the PiDay website here! Or do what I do – and use this day as an excuse to pick up a delicious Pecan Pie!