Well, happy Pi day everyone!
Pi Day and Pi Approximation Day are two holidays held to celebrate the mathematical constant π (pi) (in the mm/dd date notation: 3/14); since 3, 1 and 4 are the first three digits of π. March 14 is also the birthday of Albert Einstein and the two events are sometimes celebrated together.
Read more:
http://en.wikipedia.org/wiki/Pi_Day BTW, does anyone know how to celebrate it?