Any way you slice it, today is Pi Day. For those who are mathematically impaired or numerically challenged, Saturday, March 14 is an exponentially big day for Pi. Saturday is the ultimate Pi Day that will only happen once every 100 years. Pi represents the ratio of a circle’s circumference to its diameter that is
3.14 or March 14. Take it up a notch when you look at the first four digits after the decimal point – 3.1415 or 2015. But wait! There’s more. On March 14, 2015 at precisely, 9:26:53 am or pm, we see another and even bigger expansion of Pi by ten digits – 3.141592653.