Every year we hit Pi Day. You may not know quite how much has happened on that day in history. Pi day happens on March 14 every year because the numbers, 3/14 match the first 3 digits of pi which are 3.14. The numbers of pi were discovered about 4,000 years ago by some Babylonian mathematicians who were measuring the area of a circle. It took much longer for the digits within the number to be determined because it wasn’t too easy to do at the time. Pi Day was first made a holiday when physicist Larry Shaw hosted an event at the San Francisco Exploratorium in 1988.

On March 11, 2009 the U.S. House of Representatives passed a resolution to officially recognize Pi Day as a national holiday. March 14 doesn’t only have math day but it is also Albert Einstein’s birthday. It is a convenient coincidence that debatably the greatest mathematician and theoretical physicist was born on the day that fits the first few digits of pi. He was also born at 11:30 a.m. which also fits the 4th digit of pi that is a 1.