Happy Pi Day - 2022

The National Pi Day takes place every year on March 14, a nod to the first three digits of the mathematical constant 3.14

Pi is the ratio of the circumference of a circle to its diameter

Falling on Albert Einstein’s birthday, Pi Day is celebrated by math fans all around the world

The first Pi Day was celebrated in 1988 in California.

Eexpecting to make nearly 1,500 pizzas today.

Pi Day was officially designated by the U.S. House of Representatives in 2009.

Math teacher William Jones "invented" pi in 1706 when he was the first to use the Greek letter π (pi) as the symbol for the mathematical ratio.

While Jones gave the concept a name, its roots are much older.