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Pi Day - March 14
March 15 , 2019
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- Pi Day is celebrated on March 14th around the world, which is approximately 3.14159.
- Pi (Greek letter “π”) is the symbol used in mathematics to represent a constant the ratio of the circumference of a circle to its diameter.
- S. House of Representatives passed a non-binding resolution on March 12, 2009 and recognizing March 14, 2009 as National Pi Day.
- The entire month of March 2014 (3/14) was observed by some as Pi Month.
- In the year 2015, March 14 was celebrated as "Super Pi Day”.
- Pi Approximation Day is observed on July 22 (22/7), since then fraction 22⁄7 is a common approximation of π.
- Two Pi Day, also known as Tau Day, is lightly observed on June 28.
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