Do you know what Pi Day is? If you do, welcome to geekdom 🙂 For those non-nerds, you may remember that the number “pi” is (and on and on) and so math-types like to celebrate Pi on March – you know, – – get it?
Today is Pi Day, for obvious reasons. Pi is a Greek letter representing the ratio of a circle's circumference to its diameter, a mathematical constant. If a circle's diameter is one, its circumference is approximately Happy Pi day.