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March 14 is observed as World Pi (π) Day. When March 14 is written in the American style of Month/Day/Year, it commemorates the value of pi (π ≈ 3.14).Physicist Larry Shaw started celebrating Pi Day in 1989.
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Similarly, June 28 is considered as ‘Two Pi Day’ (2 * π ≈ 6.28) and July 22 as ‘Pi Approximation Day’ (using dd/mm/yyyy, π ≈ 22/7).
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Pi Day was declared as ‘International Day of Mathematics’ in the General Conference of UNESCO organized in 2019.
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‘World Math Day’ is an online math competition organized every year by learning platform Mathletics, which is also a globally registered trademark. The ‘International Mathematical Olympiad’ is a globally renowned mathematical competition for pre-university students.
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