Pi Approximation Day

Pi Approximation Day is celebrated on July 22 (22/7) because the fraction 22/7 is a widely used, good approximation for the mathematical constant Pi (\(\pi \approx 3.142857...\)), offering a fun, alternative date to the more common March 14th (Pi Day, 3/14) for celebrating mathematics and the value of \(\pi \). It highlights the historical use of this fraction, originating from Archimedes, for calculations before modern technology, and encourages math enthusiasts to enjoy pie (homophone of Pi) and other \(\pi \)-related activities.