September 12 is the 255th day of the year. Events Behind the Scenes 1931, Saturday: Bill McKinney (train engineer of Locomotive 131) is born in Chattanooga, Tennessee. 1992, Saturday: Put on Your Thinking Caps, Kids! It's Time for Mr. Wisdom!" first aired. Retrieved from "https://backtothefuture.fandom.com/wiki/September_12?oldid=35819" Categories: Dates Community content is available under CC-BY-SA unless otherwise noted.