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Treebeard's Stumper
5 October 2001

Palindromic Dates

Thanks Donna, you pointed out that last Tuesday, October 2, 2001, was a palindromic date. Written in the usual American way (mm-dd-yyyy), that's 10-02-2001. The digits are the same forward and backward! The obvious stumper is when will this happen again, and when did it happen last? In Europe, they write dates as dd-mm-yyyy, so Tuesday was 02-10-2001. The International Standard is yyyy-mm-dd, so it was 2001-10-02. Which way of writing dates will produce the next palindromic date? What if we all decide to write yy instead of yyyy?


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