For example at Star Wars: Rogue Squadron for the Gamecube there where some planets that the in-game's time was always the same with real worlds time.
That means when I played at morning it was morning in the game,when I played at noon it was noon in-game and when I played night it was night in-game.
But the game only made use of that feature for graphic representation and it didn't used it for gameplay.
At the other hand some Gameboy Pokemon games took that a step further.
There where some specific pokemons that where nocturnal and the player had to play the game at 2:00 to 5:00 the morning to catch those pokemons.
Would you like a feature like that to be implemented in Skyrim ?
You believe that it would make the game's world more immersive or that it would just make it harder for people to beat the game 100% ?