Today is a once-in-a-century Pi Day! - Green Prophet | Impact News for the Middle East

Today is Pi Day. Celebrated around the world every March 14th (3/14), the day focuses on the mathematical symbol that represents the constant ratio of a circle’s circumference to its diameter, approximated as 3.14159. This year’s Pi Day is a once-in-a-lifetime event; it will be 100 years until we experience 3/14/15 9:26:53 again – that’s pi to …