Pi Day

Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is celebrated around the world on March 14 or 3.14 and officially kicks off at 1:59 pm (when combined the date and time results in 3.14159, the approximate numerical value of pi).
Pi Day has been observed in many ways, including eating pie and throwing pies due to a pun based on the words "pi" and "pie" being homophones and the coincidental circular nature of a pie.

It is also coincidental that Albert Einstein shares his birthday with Pi Day. He was born on March 14, 1879. It is fitting that one of the greatest mathematical minds shares a day with one of the most significant mathematical functions.

Happy Birthday Albert and Happy Pi day.