Happy Pi Day
Today is March 14, which is the fourteenth day of the third month, and since this is 3/14 it is also known as the annual Pi Day.
Each year on March 14, pies of all kind are discounted to celebrate the date – 3/14 – which happens to also represent pi, the ratio of the circumference of a circle to its diameter.
This celebration of the mathematical constant π, which is the ratio of a circle's circumference to its diameter. The trillion-digit ratio is rounded to 3.14.