π Pi Day 2026
Pi Day falls on 2026-03-14 in 2026. It is classified as a Observance holiday.
About Pi Day
Pi Day is celebrated on March 14 (3/14) in honor of the mathematical constant pi (π), approximately equal to 3.14.
History
The celebration began in 1988 at the Exploratorium in San Francisco.
Traditions
- Eating pie
- Math competitions
- Reciting digits of pi
Fun Facts
- March 14 is also Albert Einstein’s birthday.
- Pi has been calculated to trillions of digits.