No one is certain who discovered pi as we know it today. But we do have some ideas. It seems that the Egyptians used pi in ...

Pi Day,” which is March 14, 3.14, is a day meant to recognize the special, infinite number that can also be recognized by its symbol π. Pi is an irrational number, which means it goes on ...

Pi Day 2026 is Saturday, March 14. Here's what Pi Day is, why it's always on March 14 and where to get deals in Florida on pizza and pies this year.