Image taken from jasonflom.tumblr.com
Pi Day is a holiday which commemorates the mathematical constant π (pi). It is celebrated on March 14th due to the fact that 3, 1 and 4 are the most representative digits of the π decimal form.
wikiHow.com suggests 10 steps to make it a memorable day. You will find that Pi approximation day is also celebrated on July 22nd: 22/7. The fraction "22/7" is a common approximation of π, hence the name.
And well, today is March 14th so Happy Pi Day!
@lichabarreto
