Happy Pie Day – 3 . 1 4 1 5 9 2 6 5 3 5 8 9
Observed by United States Type Mathematical Significance 3, 1, and 4 are the three most significant figures of π in its decimal representation. Celebrations Pie eating, pi memorization competitions, discussions about π[1] Date March 14 Next time March 14, 2023 Frequency Annual First time 1988 Related to Pi Approximation Day