Celebrating Pi Day Mar 14, 2026

Celebrating Pi Day

Long before pi had a name, people were drawn to its mystery. Every year on March 14, Pi Day highlights one of math"s most recognizable constants. The date reflects the first three digits of pi (π), the ratio of a circle"s circumference to its diameter: 3.14. Pi"s infinite, nonrepeating decimal has fascinated thinkers for a long time. The modern celebration began in 1988, when physicist Larry Shaw marked the day with a fitting tribute: serving pie.

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Today in History

Mar 14, 2018Happy Pi Day!
Mar 14, 2019Rocky mountain pi
Mar 14, 2020A circular celebration
Mar 14, 2021Perfect timing
Mar 14, 2022Pi Day
Mar 14, 2023Pi Day
Mar 14, 2024Happy Pi Day!
Mar 14, 2025Celebrating Pi Day

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