Thanks, then, to my San Francisco cousin K for making me smile by reminding me that the 14th of March (otherwise known as the day between brother-in-law Chad and Aunt B's birthdays) is Pi Day .... in honor of the mathematical constant 3.141592653 (+ 2 quadrillion more digits).
(K works at a science museum, The Exploratorium, that is also home to the physicist who coined the Pi Day holiday back in 1988. She's even featured on the local public radio's story on this year's celebration with some great exposition on what Pi is: "There's No Such Thing as Too Much Pi." You should listen. A band of Exploratorium employees has written a pretty funky song about it.)
Here's some fun facts about Pi Day, lifted verbatim from the Wikipedia page:
* Pi Day is observed on March 14 because of the date's representation as 3/14 in month/day date format. This representation adheres to the commonly used approximation of 3.14 for π. What some call "Real Pi Day" will be celebrated on March 14th, 2015 at 9:26:53 AM. These numbers (3/14/15, 9:26:53) correspond with the first 10 digits of pi (3.141592653).
* On Pi Day 2004, Daniel Tammet recited 2, 964 decimal digits of π.
* On March 12, 2009, the U.S. House of Representatives passed a non-binding resolution (HRES 224)recognizing March 14, 2009, as National Pi Day.
* For Pi Day 2010, Google presented a Google Doodle celebrating the holiday, with the word Google laid over images of circles and pi symbols. (Like so:)
* There is also a Pi Approximation Day held on July 22 (or 22/7 in day/month date format), since the fraction 22⁄7 is a common approximation of π.
Most definitely think that today calls for some pie, too. Thanks for the reminder, K!