Pi Day

Pi Day: It’s the geekiest time of the year

March 14 is Pi Day, a sacred celebration in which radius and circumference lovers rejoice over circular snacks and decimal-reciting contests.

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.
-- By Charyn Pfeuffer