Happy Pi Day 2025. Pi day is on march 14, and any day that combines fun, education, and pie is a day worth celebrating! From all of us @geekdreamteam wishing you a happy pi(e).

Today (3/14) is pi day, but greenvest celebrated a day early! March 14th is national pi day—a time to celebrate the mathematical π symbol, which represents the value 3.1415926535897932384626433832…, but is often.