What is Back to the Future Day - and what did the film get right and wrong about October 21 2015?

Long-running Back to the Future Day goes from hoax to legit

October 21, 2015 is Back to the Future Day.

Why October 21 2015 Was the Chosen Date in Back to the Future Part II

Did Back to the Future Part II get everything right about today, October 21, 2015? - Quora

October 21, 2015: Back to the Future Day.

Back to the Future' on Oct. 21, 2015: What the movie got right, wrong and how O.C.'s celebrating – Orange County Register

Back to the Future Day: How Fans Celebrate Oct. 21, 2015

Great Scott! October 21st is Back to the Future day! - Drive

Celebrate Back To The Future Day, Benefit Charity

What 'Back to the Future' hit, missed in its 2015 predictions - WTOP News

Back to the Future' on Oct. 21, 2015: What the movie got right, wrong and how O.C.'s celebrating – Orange County Register