Pi Day, celebrated on 14 March every year, was made official in 2009. See the related weblink.
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Pi Day is March 14. It is that day because it is 3-14 (the first 3 digits of pi). It is just a day to eat pie (the dessert) and celebrate pi (3.141592653589793238462643383279502884197169399375...)
AnswerPi day is on March 14th or 3/14.This is because an approximation of the number pi is 3.14.
Anniversary of Pi day is MARCH 14th.
We celebrate pi day because pi equals 3.14........ which is an endless number. It's a fun math class to celebrate pi day on March 14th! Yum... Pie!
pi = circumference/diameter