How is time itself organised in your fictional setting? The same way as ours or are their days considerably longer/shorter than ours? The amount of natural daylight available makes a huge difference to what people can do so how are your characters employed and how does your world's time structure affect what they do?
Time itself is often portrayed as a character (especially in fantasy fiction). I don't do this myself, preferring to drop in information as to how time is organised in my fictional settings,