Riddle: I leave London at 6:00 PM by plane to go to New York. When I arrive at my home in NY, it is 4:30 PM the same day. How is this possible?
Answer: The time zone difference causes you to appear to arrive earlier than you left. Although this is not physically possible at this point (we need to travel faster than the speed of light to do so), it appears this way.
Apparent Time Travel Riddle Meme with riddle and answer link.
