(Optional) Day / Night Cycle

As the Title says a Optional Day / Night Cycle with potentially buildings lighting up at night creating a nice atmosphere and visuals,
Of course this Day / Night cycle couldnt be perfectly in sync with the days ingame as speeding up to 3x speed means 1 day a second, perhaps it could be synced to the 1x speed or slower and stay that way no matter what speed the player puts on.

(I Feel like this could be a nice thing to add for a future update when the main gameplay elements are finished and polishing is being done)