22 / 7 : Pi Aproximation Day

Please don’t get today mixed up with Pi Day, which is on the 14th March (3.14 get it?). Today is Pi Approximation Day because 22 divided by 7 ( 22/7) is :

and

«This holiday, while considered silly to some, has been celebrated in a variety of ways over the years. Groups of people, typically pi clubs, give thought to the role that the number pi has played in their lives and imagine the world without pi».