March 14 is commonly referred to as Pi Day, a day that aims to celebrate the ratio of the circumference of a circle. The number is 3.14 or π and can go on forever. The most accurate value for Pi ...

Pi Day is largely observed in the US on 14 March to celebrate the mathematical constant π (pi) since 3.14 are the first three digits. Celebrations of the day also coincide with Albert Einstein's ...