Pi Day
Pi Day celebrates the mathematical constant π (pi) on March 14 with fun and educational activities.
Pi Day, observed on 3/14 in alignment with the first three digits of π, was first promoted by physicist Larry Shaw in 1988 at the San Francisco Exploratorium. Math enthusiasts around the world commemorate the day with pie-eating contests, lectures on geometry, and attempts to recite pi’s digits from memory. Schools and universities hold competitions, workshops, and art projects inspired by circles and mathematics. Bakeries and cafes offer pi-themed desserts, while online communities share puzzles and facts about the constant. The celebration promotes public interest in mathematics and encourages people of all ages to explore STEM topics. In some regions, Pi Approximation Day (22/7) is also observed on July 22.
Pi Day