Pi Day (and other odd dates)

Published On: Nov 11 2011 06:22:09 AM PST   Updated On: Mar 13 2015 11:43:33 AM PDT

Pi Day is going to be extra special this year, as 2015 stretches the symbolic March 14 celebration out a little longer to 3.1415. Here are some other intriguing dates that have been the source of fascination and speculation.

Odd dates 2 - Calendar pages
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iStock / kutaytanir

9/29/29 – Math lovers share an affinity for palindromic calendar dates, which can be read symmetrically backward and forward in their numerical date format. But Sept. 29, 1929 must have been a banner day for number crunchers as it's one of the few dates that have more than one palindromic form: 9/29, 9/29/29 and 9/29/1929.

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