...it end at the theater?
5:50 or another way to say it is 10 minutes to 6:00. It's 10 minutes short of being 2 hours long.
However, the listed start time for the movie is NEVER the time listed. If the theater says the movie starts at 4:00 you can count on the trailers for upcoming movies and snack counter ads to use up a good 10 to 15 minutes before the actual movie starts.