This year will be a very special Pi Day! Pi day falls on March 14th every year (representing the first 3 digits of pi: 3.14). On Saturday, 3.14.15 at exactly 9:26:53 AM & PM – the date and time will reflect the first 10 digits of the mathematical constant pi. Yippee! Looking for a fun way to celebrate? Bake a pie, ofcourse.