Saturday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its ...

Pi Day honors that irrational number 3.14159265359 every March 14th.

Each March 14 (3/14) mathematicians and science enthusiasts celebrate Pi Day, honoring the mathematical constant π (pi).

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...

At least 3,700 years ago,Babylonian mathematicians approximated the ratio of a circle’s circumference to its diameter. They inscribed their answer, the first discovered value of pi, on a humble clay ...

The Franklin Institute will host themed educational events and Night Kitchen Bakery will have sales on pie slices.

While building a simpler model for particle interactions, scientists made a sleek new pi. Representations of pi help scientists use values close to real life without storing a million digits. The ...

Happy Pi Day! That’s March 14 th, in case you don’t know. What better way to celebrate than with harvesting some Orange Pi, ...

Here's a look at Pi Days for March 14, 2026, in Michigan.