It's #SquareRootDay -- the month and day are a square root of a year only nine days out of every 100 years! pic.twitter.com/CQnRu4jC5I
— ABC7 News (@abc7newsBayArea) April 4, 2016
There are nine of these days per century. The next will happen on Cinco de Mayo in 2025.
Square Root Day was founded by Ron Gordon, a teacher in Redwood City. He keeps this website up about the special day.
Gordon suggests it's a good day to get things squared away, or go square dancing.
Go back to square...root & find historical records from the 1940 Census. https://t.co/qXdKMX6UfS #SquareRootDay pic.twitter.com/cBKHBGdOGD
— U.S. Census Bureau (@uscensusbureau) April 4, 2016
On #SquareRootDay, a new MIT formula predicts the thickness of coatings: https://t.co/k5iHwsDy3p pic.twitter.com/T2sVCKcF9J
— MIT (@MIT) April 4, 2016
Sometimes, it's hip to be square. Happy #SquareRootDay!🎉 pic.twitter.com/OOdX2nqs7D
— Google Science Fair (@googlescifair) April 4, 2016
Happy #SquareRootDay! We love a good math holiday and there will not be another one until 5/5/25. pic.twitter.com/eWs9jWyxcg
— Museum of Science (@museumofscience) April 4, 2016
Today is #OpeningDay, of course. But did you know it's also #SquareRootDay? There's plenty to celebrate on 4.4.16 - https://t.co/O3DUl7Lll6
— Baseball Hall (@BaseballHall) April 4, 2016
The last #SquareRootDay was 3/3/09. Can your class tell us when the next one is? #STEM pic.twitter.com/WeTsATCoF9
— Microsoft Education (@Microsoft_EDU) April 4, 2016
Happy #SquareRootDay! Geek out accordingly or else you’ll have to wait 9 years for the next one! pic.twitter.com/N03ftG0yEt
— TI Calculators (@TICalculators) April 4, 2016
Happy #SquareRootDay! 4/4/16 is the fourth of nine Square Root Days this century. #MathMonday pic.twitter.com/NiLkCcCoer
— MIT (@MIT) April 4, 2016
Check out our 2010 pop density map, which shows persons per square mile. https://t.co/oYLfCVR4yK #SquareRootDay pic.twitter.com/lBoziqjIoP
— U.S. Census Bureau (@uscensusbureau) April 4, 2016
Square root of beard is mustache. It's a math joke. #SquareRootDay pic.twitter.com/0hlDlkzM5x
— Gillette (@Gillette) April 4, 2016
