October 20 is the 293rd day of the year.
- 2015, Tuesday:
- Back to the Future: The Ultimate Visual History is first published by Harper Design in the US.
- Back to the Future: The Animated Series is released on DVD in the United States.
- "How Back To The Future 2 Should Have Started", a short parody of Back to the Future Part II, is uploaded to YouTube by How It Should Have Ended.