In the film "Back To The Future 2", Marty McFly travels forwards 30 years into the future to 2015. The exact time and date of his arrival is October 21st at 4:29pm Pacific time. For us in England that works out to be the 22nd at 0:29am. The future he finds himself in is vastly different to what we've actually got and this lends itself to the running joke of "Where's my [futuristic item]", usually a hoverboard as that was a key macguffin in this and the 3rd movie.