Also known as Casual Pi Day, the day is dedicated to the mathematical constant pi (π). Celebrate pi (π) by eating lots of pie. Pi denotes the relationship between a circle’s circumference and its diameter …

Pi or pie, whether you’re a baker or a math whiz, today is your day — Pi Approximation Day on July 22 honors the concept of pi, which is denoted by the Greek letter pi and approximates to 3.14, in the …

Other dates when people celebrate pi include Pi Approximation Day on July 22 (22/7 in the day/month format), a closer approximation of π; and June 28 (6.28), an approximation of 2 π or 𝜏 (tau).

Jul 22, 2024 · Discover the fascinating history and significance of Pi Approximation Day. Learn about the origins of pi and its approximation values throughout history.

Jul 10, 2025 · Pi Approximation Day, also known casually as Casual Pi Day, is celebrated every year on July 22. This date cleverly matches the fraction 22/7, one of the most familiar approximations of the …

Pi Approximation Day is yet another holiday dedicated to Pi—the ratio of the circumference of a circle to its diameter. While Pi Day is observed on March 14, Pi Approximation Day is celebrated on July 22nd.

Dec 1, 2025 · Pi Approximation Day originated as a lighter spin on Pi Day, utilizing the fraction 22/7, which closely approximates the mathematical constant pi. The fraction gives an easy way to think …

Jul 22, 2025 · Pi Approximation Day, also known as Casual Pi Day, is celebrated annually on July 22nd. The day recognises and appreciates the mathematical consonant of pi (π), which is known in various …

Celebrate Pi Approximation Day on July 22 with a slice of your favorite pie! This special day was first celebrated in 1949 to commemorate the achievement of Archimedes, who approximated pi—the ratio …

Jul 22, 2025 · It is sometimes referred to as “pi approximation day,” a designation that should annoy anyone who holds π in affection, given that both 3.14 and 22/7 are, of course, mere approximations.