"These days are like calendar comets, you wait and wait and wait for them, then they brighten up your day -- and poof -- they're gone," said Ron Gordon, a Redwood City teacher who started a contest meant to get people excited about the event.
The winner gets, of course, $339 for having the biggest Square Root Day event.
Gordon's daughter even set up a Facebook page -- one of a half-dozen or so dedicated to the holiday -- and hundreds of people had signed up with plans to celebrate in some way. Celebrations are as varied: Some cut root vegetables into squares, others make food in the shape of a square root symbol.
No joke required.