Pi Day is an annual celebration of the mathematical constant π (pi), but this year it is a little special because the date coincides with the first five digits of the number expression or 3.1415 Pi Day is observed on March 14, (3/14 in the month/day date format since 3, 1, and 4 are the first three significant digits of π.
Pi is the mathematical constant in geometry for the ratio of a circle’s circumference to its diameter.
Check it on Google …
google.com/search?q=pi
3.14159265359
If you want to carry out a few more digits …
check your clock tonight on 3/14/15 at 9:26:53
Albert Einstein was born on March 14, 1879 (3/14/1879).
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