Pi Day is an annual celebration of the mathematical constant π. The reason behind celebrating it on 14th March is the value digits i.e. 3,1 and 4,so it becomes 14th March
Pi Day (π), on March 14th, was celebrated for the first time ever in the year 1988 in the city of San Francisco. Today, it is officially recognized as a holiday around the world, with a lot of importance being given to it by the U.S. People of many countries around the globe enjoy Pi Day with lots fun, excitement and pomp.
What makes March 14th the Pi day is the fact that the numbers in the date are the same as the first three digits of the mathematical constant of pi. Moreover, since the numbers 3, 1 and 4 are quite significant, it was in 2009 that the United States House of Representatives gave their support to the designation of March 14th as Pi Day
What is Pi (π)?
Let us divide the circumference of a circle by its diameter. The answer will always be 3.14, a number that represents the Greek letter π. The result of the calculation literally has no other pattern, and can go on like this forever.