Today is Square Root Day 3/03/09

Square root day is a humorous holiday celebrated on dates where the day and the month are both the square root of the last two digits in the current year. For example, the last square root day was March 3, 2009 (3/3/09), and the next square root day will be April 4, 2016 (4/4/16). The final square root day of the century will occur on September 9, 2081. Each century it is the same nine dates that are Square root days.

Ron Gordon, a Redwood City, California high school teacher, first created the day for 9/9/81. Gordon is the official public relations person and spends news releases to world media outlets

One suggested way of celebrating the holiday is by eating square radishes, or other root vegetables cut into shapes with square cross sections.

Full list of holidays

  • 1/1/01
  • 2/2/04
  • 3/3/09
  • 4/4/16
  • 5/5/25
  • 6/6/36
  • 7/7/49
  • 8/8/64
  • 9/9/81

One Response

  1. What does it mean? Some harmonic convergence of something. Yikes.
    Aloha,
    Keahi

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