Today is 12/13/14.

You will not see a date like this again this century.  …And, truth be told, you probably don’t really care much, either.  But you think everybody else does, too, so you smile and nod and wonder What’s the big deal?

Sorry.  Humans like to match patterns.  It’s a good evolutionary survival tactic, but it comes with some quirks attached.  This is one of the benign ones.