Pi Approximation Day, also called Casual Pi Day, is celebrated worldwide on 22 July every year. Pi Approximation Day 2020 is celebrated on July 22, Wednesday.

## What is Pi Approximation Day?

Pi Approximation Day is observed every year on July 22 all around the globe. The fraction 22/7 is an approximate value of Pi, and there behind lays a particular reason why this day is seen on July 22. This day is celebrated on July 22 every year because the value of Pi is signified by the fraction 22/7. Here, in the fraction 22/7 which signified Pi, the numerator 22 symbolizes the date (22nd day of the month) and numerator 7 demonstrates the month (July).

Pi Approximation Day is seen on July 22, since the fraction 22?7 is a common approximation of Pi. The number Pi is a mathematical constant that is the ratio of a circle’s circumference to its diameter and is around equal to 3.14159. It has been represented by a Greek letter since the mid-18th century. Being an irrational number, Pi can’t be expressed precisely as a ratio of any two integers. Thusly, its decimal representation never closes and never settles into a permanent repeating pattern.

A fraction represents a part of an entire or, all the more generally, any number of equal parts. At the point when spoken in everyday English, a fraction depicts what number of parts of a specific size there are, for instance, one-half, eight-fifths, three-quarters. A common, vulgar, or straightforward fraction comprises an integer numerator, showed above a line (or before a slash), and a non-zero integer denominator, showed below (or after) that line.

An approximation is whatever is comparative however not equal to something different. The term can be applied to different properties (for example value, quantity, picture, description) that are about yet not right; comparative, yet not the equivalent. Even though approximation is regularly applied to numbers, it is likewise often applied to such things as mathematical functions, shapes, and physical laws.

## Why it is celebrated on July 22?

Pi Approximation Day is celebrated worldwide on 22 July every year. The reason behind why this day is praised for 22 July is because of the value of Pi-22/7. The fraction 22⁄7 is supposed to be the common approximation of Pi (π).

The day is recommended on July 22 to mark the Pi the place the denominator 7 represents the seventh month, i.e., July and numerator 22 represents the 22nd day of the month.

## Beginning of the Pi Day

Note that Pi Approximation Day is firmly identified with Pi Day which is celebrated on 14 March every year (representing the value 3.14). Pi Day began in the year 1988. The first party for honoring this mathematical entity-Pi was held in 1988 when Larry Shaw, a physicist at the Exploratorium, the San Francisco science museum uncovered that the date was 14 March, i.e., number of the Pi (3.14). In the year 2009, the United States House of Representatives likewise supported the assignment of Pi Day.

**Read More**: What is Pi day? Why is it celebrated?

## What is Pi (π)?

• Pi is the ratio of the circumference of a circle divided by the distance across the circle, i.e., the diameter of the circle.

• The value of Pi is 22/7 or 3.14. Pi is an irrational number, which implies that it is not possible to calculate Pi by dividing an integer by some other integer.

• Pi is an endless and never-repeating number.

• The most exact calculation of Pi is to ten trillion digits.

## Recognition of Pi Approximation Day

Pi Approximation Day is seen from multiple points of view, which incorporate eating a pie and conversation of the significance of number π. Different schools additionally hold competitions to discover which student reviews Pi to its highest number of decimal places.

Aside from this, there are recitation challenges as well as annual Einstein look-alike competitions in specific schools and colleges.