What Day Is Pi Day 2025 Usa. • how many days until pi day? The beautiful constant pi (π) is celebrated by mathematicians around the world on national pi day on march 14.
We have pi day tradition, history, statistics, activities, why and how we celebrate pi day march 14, 2025. Pi day 2025 is a national holiday, but not a state holiday, meaning that celebrations can vary from state to state.