Pi Day (and other odd dates)

POSTED: 06:22 AM PST Nov 11, 2011    UPDATED: 11:43 AM PDT Mar 13, 2015 
Pi

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.