Pi Day takes place annually on 14 March. It commemorates the mathematical constant Pi (3.14) and is celebrated on the 3rd Month 14th Day since 3, 1 and 4 are the three most significant digits of pi in the decimal form. Pi refers to the ratio of the circumference of a circle in relation to the diameter of a Circle with The circumference being 3.14 times greater than the diameter of a circle.
In 2009, the United States House of Representatives supported the designation of Pi Day. The earliest known official or large-scale celebration of Pi Day was organized by Larry Shaw in 1988 at the San Francisco Exploratorium, where Shaw worked as a physicist, with staff and public marching around one of its circular spaces, then consuming fruit pies. The Exploratorium continues to hold Pi Day celebrations. There are many ways of observing Pi Day. These include eating pie, discussing the significance of the number Pi and more recently watching Life Of Pi.
The Massachusetts Institute of Technology has often mailed its application decision letters to prospective students for delivery on Pi Day. Starting in 2012, MIT has announced it will post those decisions (privately) online on Pi Day at exactly 6:28 pm, which they have called “Tau Time”, to honor the rival numbers Pi and Tau equally.The town of Princeton, New Jersey also hosts numerous events in a combined celebration of Pi Day and Albert Einstein’s birthday, which is also March 14. Einstein lived in Princeton for more than twenty years while working at the Institute for Advanced Study. In addition to pie eating and recitation contests, there is also an annual Einstein look-alike contest.