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Palindrome day: No turning this day around

No, it's not about Sarah Palin 鈥 although we try 鈥 but something for numbers nerds: those rare dates that read the same backward and forward.

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Bryan Oller/The Gazette/AP
No, this is not a palindrome, although political wags have tried. It's the former governor of Alaska at a recent book signing in Colorado Springs, Colo.,

Don鈥檛 even try (actually, go ahead) 鈥 you won鈥檛 be able to turn this day around.

That鈥檚 because it鈥檚 only the second palindrome day of the 21st century, meaning that if you flip the day over it reads the same: 01/02/2010. (And, no, this is not another story about Sarah Palin, though it could be since 鈥淗arass Sarah鈥 is sort of a cool palindrome; or how about 鈥渟tar comedy by Democrats鈥? Okay, an .

The word palindrome is from the Greek palindromos, derived from "palin," meaning 鈥渁gain,鈥 combined with "drom," meaning 鈥渞un鈥 鈥 so, literally, running back again.

Palindrome days, at least in the long run, are rarer than visits by Halley鈥檚 Comet, which swings by the green planet once every 75 or 76 years. Yes, the last palindrome date wasn't that long ago, on Oct 2, 2001 鈥 10-02-2001, but the one before that came a full 620 years earlier, on Aug. 31, 1380, in the year Charles VI, the French king, declared no taxes forever. (Again with the Sarah Palin references.)

The next palindrome day, which will be the third out of 12 in the 21st century, will be on 11-02-2011. The 36th and last palindrome date of this millennium will occur on Sept. 22, 2290. The next one after that will be Oct. 3, 3001. A bit spooky to think of, that.

鈥淧alindrome dates are notably rare. They only occur in the first few centuries of a millennium,鈥 Aziz Inan, an electrical engineer at the University of Portland, in Vancouver, Washington.

Since most of the rest of the world puts the day at beginning of their numerical date (so, 02/01/2010), they won't be sharing this palindrome day. But no worries. Those countries will get 60 palindrome days this millennium.

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