Pi Day / Date
Fri, Mar 14, 2025
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Pi Day is celebrated on March 14th (3/14) around the world. Pi (Greek letter “π”) is the symbol used in mathematics to represent a constant — the ratio of ...
Pi Day
Celebration
Date: Friday, March 14, 2025
First year: 1988
Related to: Pi Approximation Day
Significance: 3, 1, and 4 are the three most significant figures of π in its decimal representation
Pi Day is observed on March 14 (the 3rd month) since 3, 1, and 4 are the first three significant figures of π, and it was first celebrated in the United States.
March 14th (3/14) commemorates the irrational, transcendent, and never-ending ratio that helps describe circles of all sizes. Explore math-inspired activities ...
Mar 14, 2024 · National Pi Day on March 14th recognizes the mathematical constant π. Also known as pi, the first three and most recognized digits are 3.14.
Mar 14, 2024 · Pi Day is celebrated annually on March 14, since the date written numerically corresponds with the first three digits of π. (Pi Day was ...
Mar 14, 2024 · The Pi Day holiday is on Thursday, March 14 since 3/14 correlates to the first three digits of the infinite number.
On March 14, NASA will join people across the U.S. as they celebrate an icon of nerd culture: the number pi. So well known and beloved is pi, also written π or ...