# Why Pi Deserves Its Own Day (and How It Can Help You Find the Best Pizza Deal)

Maybe you met pi in grade school. Maybe you didn't appreciate it. The magical, practical number that goes on forever and forever is celebrated on the day that matches its first digits: 3/14.

Here's a funny story. A reporter at National Geographic wanted to find someone to interview about pi—that number you learned in grade school that is the ratio between a circle's circumference and its diameter.

So the reporter thought, I wonder if there's such a thing as a museum of mathematics.

And the reporter googled "museum mathematics." And you won't believe this, but there really is a Museum of Mathematics in New York City, which opened in 2012.

The museum will, as you might imagine, celebrate pi on what's known as Pi Day. That day is 3/14 because the start of the number pi is 3.14. And since the next three digits are 159, the museum and other museums that love numbers, like

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