Tag Archives: Pi Day

Reflections on Pi Day, 2015

Pi-symbol.svgMarch 14 of each year is Pi Day, founded in 1988 by Larry Shaw and supported by a 2009 resolution in the U.S. House of Representatives. Those of us who use the date format like 3/14 can match up the digits with the first three significant digits of Pi, 3.14. I’m a number geek who enjoys a bit of silly fun with things like this.

This year brought a special treat because we could fit in more digits, aligning with the date 3/14/15. But wait, there was more! We could also determine the actual Pi hour, minute and second. So at 9:26:53 on that morning we had lined up the first ten significant digits of Pi, 3.141592653.

The Pi Moment

Astounding! But there are even more digits, and tinier bits of time! So, the actual Pi instant (Central Daylight Time) occurred within the 53rd second at 589 milliseconds, 793 microseconds, 238 nanoseconds (am I the only Bozo on this bus?), 462 picoseconds and additional minutiae. Twenty-two significant digits so far. You can take it further if you like. Others certainly have.


After writing out the Pi instant for myself, I prepared to celebrate and then moved on to other work. I tend to become very involved and focused on my work, so the next time I looked at the clock, it was 11:30 a.m. I had missed the Pi moment completely! Aagh! It is a good thing I had not invested in party hats, whistles and fireworks, let me tell you! The magical Pi instant had passed by me unbeknownst.

There is No “Now”

Reflecting back on the experience now, Continue reading