Square Root Day refers to dates when the day and the numerical value of the month are both are square roots of the last two digits of the current year. March 3, 2009 was a square root day, as the number 3 is a square root of the number 9.CNET: Square Root Day revelers to party like it's 3/3/09 (March 2, 2009)
Square Roots
A square root of a number is the value that multiplied by itself becomes equal to the number, for example, the square root of 9 is 3 because 3 multiplied by 3 is 9.
Events
Gordan is organizing a contest to publicize the 2009 day. The prize is a total of $339, which will be divided among winners. Gordan is encouraging people to celebrate square root day, for example by eating root vegetables cut into squares.CNET: Square Root Day revelers to party like it's 3/3/09 (March 2, 2009)