British PI day
The 22nd of July is British PI day each year which when written as 22/7 in British date format gives an approximation of the value of π (PI) as 3.14285714....
PI is an irrational number, one that cannot be written neatly as a simple fraction (e.g. 9.5 = 19/2), and so the decimal part of PI goes on to an infinity of places. PI to 29 places is: 3.141592653589793238462...
There is also an American PI Day, on March 14th because when written in the American date format of month.date, gives PI to two decimal places: 3.14. Like the British PI Day value, is close but never exact
British PI day
The 22nd of July is British PI day each year which when written as 22/7 in British date format gives an approximation of the value of π (PI) as 3.14285714....
PI is an irrational number, one that cannot be written neatly as a simple fraction (e.g. 9.5 = 19/2), and so the decimal part of PI goes on to an infinity of places. PI to 29 places is: 3.141592653589793238462...
There is also an American PI Day, on March 14th because when written in the American date format of month.date, gives PI to two decimal places: 3.14. Like the British PI Day value, is close but never exact