In the Grand Central scene where the lights flash on and off and the globes lighting the clock explode, the time on the clock is as expected, 2:22. When the leading actor raises his hand to rub his face, the time on his watch is 7:15.
In the beginning of the movie a China Southern plane - CA 135 - is being directed by flight control. The first mistake is that the airline prefix CA is for Air China, not China Southern. Secondly, Flight CA135 is a flight from Beijing, China to Seoul, South Korea.