Today is Tuesday, Pi day (3/14)! Pi day is a national holiday celebrating mathematics, pi, and yes sometimes some baked pie and Pi-zza…

As 3/14 is a Tuesday, so are April 4, May 9, June 6, July 4, August 8, September 5, October 31, November 7, and December 26th!

Last year Pi day was on a Monday, the year before, a Saturday. Back in 2000, Pi day was Tuesday… Check out the math trick that lets you find the day of the week for *various dates throughout history*!: Check out James Grime’s full explanation of the trick:

## Celebrations

Check your local library or community bullettin board – many areas have math meetups and Pi day is a great day to share some interesting math facts, and sometimes have contests memorizing digits of Pi ðŸ™‚ While a dozen or so digits should be enough to calculate anything accurately, it is interesting to see patterns or try to find your favorite number within digits of pi. In fact there are some online tools to search through the digits of pi – note that the digits seem random and as such it is less likely but still possible, to find the longer digits.