When Is Pi Day 2024. On pi day (march 14), nasa reminded us why we need only a small slice of the irrational number's infinite decimal places to explain most of the known universe. Pi day is observed annually on march 14 because 3, 1, and 4 are the first three digits of pi.
This day is dedicated to the mathematical constant pi (3.14), and it is a time to celebrate the excellence of maths. Whether you’re challenging yourself to find how many decimal placements are.
