March 14 is recognized as global Pi Day. Pi represented by the Greek letter π is the ratio of the circumference of a circle to its diameter, which is approximately 3.14159 (hence the 14th day of the third month 3/14).
In 2017, Pi Day was celebrated at the Monroe Correctional Center in Washington state, where prisoners who were math enthusiasts were joined by mathematicians. It was the first event organized by the Prison Mathematics Project (PMP), an organization started by Christopher Havens to share his passion for math with fellow inmates.
This year, the PMP’s Pi Day celebrations will be virtual with mathematicians from all over the world coming together and sharing their knowledge and passion with a growing community of prisoners who love mathematics.