Pi Day

Pi Day is observed on March 14th (3/14 in American month/day dating shorthand) in celebration of the important mathematical constant, π (pi), of which the first three digits are 3.14. Because "pi" and "pie" are homophones, and both relate to circles, Pi Day celebrations often involve pie—whether baking it, eating it, or even throwing it. People passionate about mathematics and pie lovers alike come together to celebrate this holiday.

Origin
The first known official Pi Day celebration occurred in 1988 at the San Francisco Exploratorium, and was organized by physicist Larry Shaw. People marched around one of the building's circular spaces, and then ate fruit pies. The Exploratorium continues to hold annual Pi Day celebrations to this day.

Disagreements
Rational mathematicians argue that Pi Day is really around July 22nd.

Ways to Celebrate

 * Baking pies, often featuring representations of pi on the pies themselves
 * Eating pie
 * Pie eating contests
 * Pie throwing contests
 * Contests for memorizing the most digits of pi
 * Discussing/educating others on the significance of pi in mathematics