πday - pi day
Pi day
Pi day happens every March 14 because the calendar date 3/14
Is the same as Pi's first three digits . But the 2015 pi celebration
was an exceptional one. Adding the last two digits of the year one would get 3.1415 . One might guess that this date alignment happens just once a century .
Going further , when the clocks struck 9:26:53 am and 9:26:53 pm and add an additional five digits to make 3.141592653.
Exactly what is pi ? It's the ratio of the circumference of a circle to it's diameter or the number you get when you divide the circumference of any circle by it's diameter.
It starts with 3.1415 and goes on forever in a never - repeating pattern . Mathematicians call it an infinite decimal .
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