July 22: World observes Pi Approximation Day

Pi Approximation Day was celebrated worldwide on July 22 (as the date is written 22/7). As we know that the value of Pi is 22/7 and it is said to be the common approximation of Pi (π).
The Pi Day started in the year 1988 when Larry Shaw, a physicist at the Exploratorium, the San Francisco science museum disclosed that the date was March 14 (as the day is 3/14 which represents the value 3.14).
Pi Approximation Day is quite closely related to the Pi Day which is celebrated on March 14 every year (representing the value 3.14)
Pi Approximation Day is celebrated in order to mark the Pi or approximation of EMBED Equation 22/7.