A long time ago, I saw in TV a movie but I do not remember the title. However, I remember some scenes of it. The plot of the movie is similar to Flash Gordon and most likely it was shot also in the 80s.
Now about the plot (note that I may be wrong about some of the description!). There is a city in the sky and is in danger. Something must be done within a deadline. So, the hero takes a space ship and heads to the evil guy. Upon arrival his spaceship was shot down. I remember that it crashes in a huge clock which is used for the countdown. That's it! I know these are not many details, but I hope that someone might know the title of this movie.
Many thanks in advance.