Hello!  I'm searching for a foreign film I saw on the International Channel last spring.  It was about a man who heard a voice over his radio and who was given instructions to do things or bad things would happen... ultimately he has to kill his best friend to save the earth from distruction.  In the end the voice tells him of another planet where the "being" of that planet did not comply, and at 5pm the planet ceased to exist... so the man saw through his telescope.  IT WAS A GREAT FILM!!  I'm guessing it may have been Brazilian or Italian, perhaps (though I've no idea really).  Appreciate any help with this!  Take care!