Daytime movies are those that I feel can be watched at any time of day or night. This is a very subjective analysis, but certain movies just have a daytime feel. Part of it probably comes from the ratio of daylight scenes to nighttime scenes in the movie itself. For example: The Sound of Music, Legends of the Fall, The Shawshank Redemption, Robin Hood: Prince of Thieves, The Great Train Robbery, Top Gun, the Die Hard series, all James Bond movies not starring Daniel Craig, Harry Potter I-IV, most comedies and superhero movies, etc. This might also be influenced by how often I've seen them played on TV during daytime hours.
Nighttime movies are, you guessed it, more dark, more evil, or have more complex themes that I feel are more appropriate to enjoy at night. Examples: Let Me In, Gladiator, Brazil, Mulholland Drive, Dark City, the Alien series, Harry Potter V-VII, the Matrix series, etc. That's not to say that I can't watch one of these during the day or vice versa. It's simply a preference that informs how I'd choose a movie, which is what's important when I'm picking something to watch.
Since I have three binders, I'll probably put all non-movies (concerts, documentaries, TV shows) in the third binder. Next I'll need a bookshelf to put all these binders eventually.
