Pi Day

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Pi Day became an annual event at the Exploratorium that continues today, and the idea quickly grew tremendously, reaching a zenith on March 12, 2009, when the US Congress made it a national holiday.

Now celebrated by math geeks the globe over, Pi Day has evolved into a pop-cultural phenomenon, with several locations participating in events, shenanigans, observations, and all the pie feasting they can.

Pi Day

What is Pi Day?

Pi Day is celebrated and chosen on March 14 (3/14) worldwide. Pi (Greek letter “π“) is the mathematical symbol for a constant — the length of a circle divided by its diameter — about 3.14159. Pi Day is an annual event that allows math aficionados to repeat Pi’s endless digits, discuss arithmetic with their friends, and eat pie.

The History of Pi Day

We must travel back a few 1000 years and study this enigmatic number to understand pi. Archimedes (287–212 BC), one of the greatest mathematicians of the classical civilizations, was the first to calculate the value of pi.

However, it was initially christened with the Greek letter in 1647 by William Oughtred and was later adopted by the science establishment when Leonhard Euler used the sign in 1737.

However, how did Pi Day become a national phenomenon? That requires a trip to the Exploratorium in 1988 San Diego, where physicist Larry Shaw conceptualized it.

When is Pi Day?

Pi Day, observed on March 14, is an annual event of the mathematical symbol pi. March 14 was picked as the date for the celebration in 1988 by physicist Larry Shaw because the numerical value (3.14) symbolizes the first three digits of pi and also happens to be Albert Einstein’s birthday—a perfect pi-incidence.

Pi Day is observed in a variety of ways.

* Pi is a homophone of pie; the two words are sound similar but have different spellings and meanings. Celebrate Pi Day by indulging in copious amounts of pie.

*Hold a pie-baking competition. Instruct participants to create pies in the shape of the number pi. Combining it with a pie-eating contest is a great idea.

*Have a contest for pi reciting. Whoever can recite its most digits of the continuous wins a pie.

*Accept your geekiness. Wear a t-shirt with the numerals pi printed on it or accessorize with pi-shaped items. Perhaps earrings?

*Consume foods that begin with the letter pi, such as pineapples as well as pizza, or meals that have a circular form, such as pancakes and cookies.

Why Do We Celebrate Pi Day?

The best part was that one of us got the opportunity to smash a pie on his face after class if we could adequately answer all of his Pi questions. As if freshly baked pies weren’t delectable enough! It’s more of an excuse to generate enthusiasm and demonstrate the enjoyable aspect of math instruction. That is why Pi Day should be observed.


Mathematicians, scientists, and educators hope that the holiday will foster a countrywide interest in mathematics and science through education, museum exhibits, and pie-eating (or hurling) contests, among

other activities. This tacky national festival appears to appeal to both left-brained and sweet-toothed individuals.