Some predictions for 2015 (but nothing to do with BTTF)
I predict some people will get goofy about the date on March 14, 2015.
I predict some other people will get goofy about the date on April 31, 2015.
Further, I expect to see the usual posts about MM/DD/YY vs. DD/MM/YY.
All I can do stand back and point at ISO 8601. It's hard to beat.
January 2015 edit: there is no April 31, 2015, because there is no April 31. Nobody noticed? Unfortuate.