It's that time of the year again for the Sci Fi Channel July 4th Twilight Zone Marathon. It will begin 5:00 PM (Eastern time) on July 3rd and run until the early morning of July 5th. Here is the SciFi.com schedule for July 3rd and the same for July 4th. You can also see it all laid out on one page on this IMDB page. Check your local listings for the exact times in your locale.