March 14 is celebrated as Pi Day because the date, when written as 3/14, matches the start of the decimal expansion 3.14159… of the most famous mathematical constant. By itself, pi is simply a number, ...

Saturday's Google Doodle celebrates everyone's favorite math holiday, Pi Day. The Doodle features an animated illustration of how the mathematical constant is us ...

Every year on March 14, classrooms, universities and research institutions across the world turn their attention to a subject ...

Every year on March 14, people around the world celebrate Pi Day, a day dedicated to the mathematical constant π (pi) ...

This day only comes 'round' once every year!

Pi Day is celebrated every year on March 14, honouring the significance of the mathematical constant π and its applications ...