This sort of thing only happens once in a lifetime. Unless you're a genetic freak. Or you're just weirdly healthy. Math geeks will be delighted with this pi day of the century (3.14) graphic! March 14, 2015 at 9:26:53 AM/PM (or rather, 3.14.15 9:26:53) is something to celebrate in the mathematics world, a once in a lifetime event.