Hashtags | #PiDay, #HappyPi |
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2021 Date | 14 March 2021 |
2022 Date | 14 March 2022 |
Australian & Common Holidays | ||
Misc. & Int'l. Observances | ||
Christian Holidays | ||
Jewish Holidays |
![]() Pi Day HistoryPi Day celebrates the mathematical constant π (pi), 3.141592653... Pi is the ratio of a circle's circumference to its diameter. The circumference of a circle is defined as its arc length while the diameter is defined as the longest chord of the circle. Pi is a special number due to its infinite and pattern-less nature. This means that the digits after the decimal point never repeat themselves in a specific pattern. Pi Day was established in 1988 by Physicist Larry Shaw. Shaw was an employee at the San Francisco Exploratorium where the first Pi Day was held. It took place on March 14th (3/14), given that the first digits of Pi are 3.14. On March 12, 2009, the U.S House of Representatives recognized March 14 as National Pi Day. Top Tweets for Pi Day -
In the News and Trending for Pi DayUpdated Happy Pi Day! March Math Activitymathnasium.com CTY Pi Day 2020!givecampus.com Celebrate Pi Day with... you guessed it... pie! | Scentsy Top Notes Blogscentsyblog.com Under Armour Curry 7 'Pi Day' PE Release Datesolecollector.com Where To Find Pi Day 2020 Steals & Dealspatch.com Pi Day Facts & Quotes
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Pi Day References and Related Siteswww.guinnessworldrecords.com: Most Pi Places Memorized Library of Congress: Pi Day | ||