1970A was an ABC timeline and a year in the 20th century. It was created when an elderly Biff Tannen from 2015 gave his younger self from 1955 a sports almanac to make himself rich.
- Friday, December 25: Biff used his wealth to send Lorraine Baines McFly a box of toys for her children, Dave, Linda, and Marty, every Christmas. After the seventh year straight of receiving presents from Biff, George McFly stated that it needed to stop. Lorraine wanted to leave Hill Valley, but George convinced her to let the family stay as he didn't want to take the children away from their grandparents.