I missed pi day
Yesterday. Mmmmmm, pi. From Jason Oberholtzer's blog.
Pi Day was first celebrated in 1989 at the San Francisco Exploratorium as a gimmick, the creation of physicist Larry Shaw, but the holiday has gained momentum around the world as a day for mixing math awareness with general goofiness and specific gluttony.
Pi Day graduated from fad to law in 2009, and is observed nationally, thanks to non-binding resolution (HRES 224) passed by the U.S. House of Representatives. The secular celebration of pie consumption and the finer points of π-related mathematics occurs annually on March 14th (3/14, 3.14 – get it?) and, in lesser form, on Pi Approximation Day, July 22nd (22/7, a common equation which exceeds, but is used to approximate π).