Math, it just adds up...
Square Root Day revelers to party like it's 3/3/09
"Count on Tuesday's alignment of the calendar to add some excitement to the lives of at least a few math geeks.
Tuesday is Square Root Day, a rare holiday that occurs when the day and the month are both the square root of the last two digits of the current year. Numerically, March 3, 2009, can be expressed as 3/3/09, or mathematically as √9 = 3, or 3² = 3 × 3 = 9.
Celebrants are expected to mark the occasion by cutting root vegetables into squares or preparing other foods in the shape of the square root symbol.
Square Root Day occurs only nine times in a century. The last one occurred on February 2, 2004, and the next will occur in seven years on April 4, 2016. "