On the afternoon of July 14th, the U.S. population, according to the U.S. Census Bureau, reached 314159265. Divide said number by 100,000,000. Get it?

3.14159265. Next opportunity for another wild celebration of this milestone will be when [if] the population hits 3,141,592,653. That memorable previous taste of Population Pi took place sometime around the end of the Civil War.

And let's thank the those wacky inventors of Pi Day, the first of which undoubtedly was celebrated..when? Right. March 14 1592.