Pi Approximation Day 2024 Pi. This day pays tribute to the fascinating properties of π, with the fraction 22/7 as a notable approximation. Even the us space agency nasa uses it to.

At its core, pi approximation day is a celebration of all the math that pi has allowed us to do. Pi approximation day is celebrated every year on july 22nd because the date (22/7) is commonly used as an approximation for the mathematical constant π (pi).