224), recognizing March 14, 2009, as National Pi Day. House of Representatives passed a non-binding resolution ( 111 H. The Exploratorium continues to hold Pi Day celebrations. In 1988, the earliest known official or large-scale celebration of Pi Day was organized by Larry Shaw 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. Other dates when people celebrate pi include July 22 (22/7 in the day/month format, an approximation of π) and June 28 (6.28, an approximation of 2 π or tau). UNESCO's 40th General Conference designated Pi Day as the International Day of Mathematics in November 2019. In 2009, the United States House of Representatives supported the designation of Pi Day. ![]() Celebrations often involve eating pie or holding pi recitation competitions. It was founded in 1988 by Larry Shaw, an employee of the San Francisco science museum, the Exploratorium. ![]() Pi Day is observed on March 14 (the 3rd month) since 3, 1, and 4 are the first three significant figures of π. Pi Day is an annual celebration of the mathematical constant π (pi). ![]() Pie eating, pi memorization competitions, discussions about π, creating pi chains Not to be confused with National Pie Day.ģ, 1, and 4 are the three most significant figures of π in its decimal representation.
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