Posted by: Dave Richeson | March 3, 2009

Happy square root day!

Happy square root day!

Today is the third of nine square root days this century. The first was January 1, 2001 (1/1/01), then February 2, 2004 (2/2/04). Today is March 3, 2009 (3/3/09).

The last square root day of this century will be September 9, 2081 (9/9/81).

Please act responsibly on this nerdy holiday and do not drink and derive.



  1. Let’s not forget that for the numerically challenged who are not historically challenged, George Washington was born in the square root of three times 1000. I.e. sqrt{3} \times 1000 = 1732.


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