During the "I'm flying" scene with Jack and Rose at the front of the ship, the sun is directly to their left as it sets. We all know the sun sets in the west right? And Titanic is supposed to be going to New York, which is also west from England...so did the Titanic decide it wanted to take a stop at the North Pole or something? Clearly the green screen people wanted the lighting to be pretty and yes a sunset is pretty but they flubbed and ended up redirecting where the ship is going!