Back to the Future (1985)

On November 5, 1955, Dr. Emmett Brown slips while hanging a clock in his bathroom, strikes his head, and has a sudden vision of the flux capacitor — the device that will make time travel possible. By coincidence, this is the exact date Marty McFly arrives when he accidentally travels back from 1985, making November 5th the pivot point on which the entire trilogy turns.

On November 12, 1955, a bolt of lightning is scheduled to strike the Hill Valley clock tower at precisely 10:04 PM — Marty McFly's only chance to generate the 1.21 gigawatts needed to send the DeLorean back to 1985. Doc Brown rigs a cable between the tower and the street; Marty has one pass at the wire, in the rain, with the clock already ticking.