14th March is celebrated as National Pi Day, and this is a day that syndicates fun, education, and pie is a day value rejoicing! Pi, also known by the Greek letter “π,” is a persistent value used in math that signifies the ratio of a perimeter of a circle to its diameter, which is just about 3.14. Not only that, Albert Einstein’s birthday is also on the 14th, so overall you can say this is a day dedicated to mathematicians’ happiness.

## When is National PI Day 2022?

In 2022 the constant PI Day is going to celebrate by mathematicians around the world on 14th March 2022.

## History of National PI Day

The earliest and large-scale celebration of PI Day was organized at the San Francisco Exploratorium by Larry Shaw. Since that day every year, his Exploratorium celebrates this as the popular PI Day.