Pi Day Friday!

Well, if you still had any hesitation of firing up the good old days of full-blown Pi Day parties, hesitate no more… because Pi Day is back on a Friday!

And while we are now a full decade removed from the Pi Day of the Century (where has the time gone??), there’s plenty of numerical notability to this one here in 2025. Here’s a clever finding from an engineering professor:

“The date 3/14/25 encodes Pi Day and vice versa: The squares of the digits of 3/14/25 are 9, 1, 16, 4, and 25. These are the letter values of I, A, P, D, and Y. These letters can be rearranged to spell Pi Day.”

Sooo…. not quite the power of 3.14.15 at 9:26am (oh, what a beautiful moment that was), but it still has a nice ring to it. I’m definitely a fan of the number 2025 itself, which, of course, is 45 squared… and, if you’re reading this anytime in the early-mid 21st century, the only perfect square year of our lives (the last one was 1936 and the next one is 2116, when all humans will have a chip containing the first trillion digits of Pi implanted in their brains for convenience).

As for me, your faithful Pi-ed Piper, I don’t have any special plans for this year, but I’m excitedly thinking ahead to Pi Day ’26, which falls on a Saturday (even better!). Should I head back to Pi Day Princeton, where the good fellow Einstein will be turning 147? Or would you like me to join you at your school or another venue? I’m always excited to find out where the infinite digits of Pi will take me, and to hear where they are taking you!

Go have some Friday fun!

Luke