Four DeLoreans

November 12, 1955.

A lot happened on this day in Hill Valley. All kinds of awesome stuff. Hey, did you know there were four DeLorean time machines in town on this day, too? Not only that, but they're all in town at the same time.

One (from Part 1 of the series) gets struck by lightning at precisely 10:04pm.

One (from Part 2) has hover conversion. Old Biff brought it from the year 2015 to give the Gray's Sports Almanac to young Biff.

One (from Part 2) has hover conversion. Doc and Marty bring it from the 1985A timeline (also known as the Hell Valley timeline.) This DeLorean also gets struck by lightning during the storm and sends Doc to 1885.

One (from Part 3) is hidden in the Old Delgado mine by Doc in 1885 to be unearthed the next day by Marty and 1955 Doc.

The movie paid more attention to the notion that there are two Martys, two Docs, and two Biffs on November 12, 1955.

Also in the series, there are two DeLoreans on October 26, 1985 at the same time. One crashed into the XXX theater near the Courthouse and one at the Lone Pine Mall about to travel to 1955. Likewise there are two Martys.

It is unknown how at what point in 2015 Doc arrived in the future nor is it known how long he was there before he returns to 1985 to retrieve Marty to help his future son. If he went exactly 30 years in the future, then he would have arrived on October 26, 2015. Doc, Marty, and Jennifer arrive on October 21st and leave later that day. At this point, we can assume that no DeLorean coexisted with another this year.

As stated in a previous post, there are two DeLoreans in Hill Valley in 1885. The first one arrived on January 1st of that year. After falling 50 feet from broken flying circuits, it breaks. Doc is unable to repair it and hides it in the old Delgado mine on September 1st. Marty arrives the next day, September 2nd, and then goes back to the future on September 7th, 1885. So these DeLoreans coexist for five days.