# What is Square Root Day and how to celebrate it – Orlando Sentinel

While March was Math Holiday Month, April is the star this year with the rare Square Root Day.
This holiday is only celebrated when the date’s month and day are both square roots of the last two numbers of the year. In this instance, we’re celebrating 4/4/16 because four is the square root of 16.
Make sure to take advantage of Square Root Day while it’s here because there are only nine Square Root Days a century. The next Square Root Day will be 5/5/25, then 6/6/36, then 7/7/49 and so on.
There’s a ton of punny ways to get down this Square Root Day including but not limited to, square dancing, eating root vegetables, get things squared away in your personal and professional life, learn to tie a square knot, drink from a square glass, drive on Root 66 or even eat a square meal.
One easy way to celebrate the day is by cutting root vegetables cut into cubes, also known as squares, and throwing them into a stew to make Square Root Stew.
If this holiday seems a little too square for you, there are other mathematical holidays you can enjoy.
Pi Day, celebrated on March 14 because the decimal for pi is 3.14, can be celebrated by eating your favorite pie, watching the movie Pi or by pieing a friend. For those of you who know pi is much more than 3.14, there’s Pi Approximation Day that’s celebrated on July 22, which can be written in the fraction of pi, 22/7.
Another matholiday is Mole Day. Celebrated on Oct. 23 from 6:02 a.m. to 6:02 p.m., this day honors Avogadro’s Number, 6.02 times 10 to the 23rd. It’s known as Mole Day because a “mole” is a basic measuring unit for the atomic mass of a single molecule in grams. That measurement was proposed by Amedeo Avogadro in 1811.
Ways to celebrate Mole Day include building a mole statue, writing a mole joke, singing about moles and baking mole-themed pastries.