Pi Day is celebrated annually on March 14 ... and having boombox parades while reciting the digits of Pi and singing "Happy Birthday" to Albert Einstein, who was born on March 14.

Pi Day is celebrated today, 14 March, round the world. Pi (Greek letter π) is the symbol used in mathematics to represent a constant — the ratio of the circumference of a circle to its ...

March 14 is Pi Day, which gives you a hint to the start of the irrational number that is central to a lot of mathematics. In a video, Duke students competed to provide the longest string of Pi digits.

But there's another holiday that offers an even better excuse to indulge in pie: Pi Day, celebrated on March 14, is a non-traditional holiday beloved by math geeks everywhere. If you’re planning ...