- This event has passed.
National Pi Day
March 14, 2022
Today is National Pi Day – yes that’s Pi, not Pie. Pi (Greek letter “π”) is the symbol used in mathematics to represent a constant – the ratio of the circumference of a circle to its diameter – which is approximately 3.14159. Pi Day is an annual opportunity for math enthusiasts to recite the infinite digits of Pi, talk to their friends about math, and to eat Pie. To learn more, visit https://www.piday.org/