oswal13

Corrected entry: At the beginning of the film, when Marty gets to the Doc's place he is wearing a watch, so he could easily know about the right hour in spite that the clocks are wrong.

oswal13

Correction: 3 possibilities from the top of my head: 1. He wears the watch but never checks it, it's just a fashion statement for some people, next to that he just entered a home with a wall full of clocks, no need to check your watch as well. 2. The watch isn't working (it's digital). 3. The watch could be on the wrong time as well.

lionhead

Correction: If you look at the time readouts, Marty travels to Nov. 12, 1955 at around 6 am. What time it was at the moment didn't matter.

LorgSkyegon

Corrected entry: After Marty takes a ride from a jeep to get to the classes he is using his headphones, which disappear outside the school.

oswal13

Correction: When Marty is holding onto the back of the jeep on the way to school, he is shown wearing headphones. After this, the scene ends and it cuts to the next scene, where he arrives at school (without headphones) and some time has gone by. Enough time would have passed in between scenes for him to put the headphones in his bag.

Casual Person