Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 which makes perfect sense as the first three significant digits of π are 3,1,4 (e.g. March 14)
According to the website Angio, Pi (π) is the ratio of the circumference of a circle to its diameter. It doesn't matter how big or small the circle is - the ratio stays the same. Properties like this that stay the same when you change other attributes are called constants. Because it's so easily observed (you can measure it with a piece of string!),
Pi has been popular for centuries, thanks to Archimedes of Syracuse (289-212 BC) who first calculate Pi.
Sooooo!.... Let us set aside some time today to celebrate everything that is constant - life, death, taxes, sunrises, sunsets, good friends, bad friends, love and hate.
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