History of Pi Day

Pi Day came to be in 1988, when physicist Larry Shaw wanted to celebrate to celebrate the mathematical sign pi and selected 14 March as the date in the American date format represents the first three digits of Pi (3.14) and Albert Einstein's birthday falls on 14 March.

The Pi symbol  has been around for many years, stemming back to the Ancient Greeks. Archimedes, a famous Greek mathematician, came up with Pi and was the first to accurately calculate its estimated value. Since it is a transcendental and irrational number, it continues on to infinity, making possibilities are endless! The word Pi comes from the first letter of the Greek word perimetros (circumference) and has been represented by the Greek letter π since the mid-18th century.
In maths, the seemingly never-ending number of Pi needs to be abbreviated (shortened) for problem solving and the commonly accepted and accurate estimations are 3.14 (the first three digits) or the fraction 22/7. The infinite number is crucial as it represents in relation to a circle as it's the constant ratio of a circle's circumference to its diameter. Due to this, Pi is essential to engineering which allows modern construction to be possible.
Pi Day only became a national holiday in the US when the US House of Representation passed legislation in 2009.