When using cheats in Ultima it was possible to see the schedules for the NPCS.
08:00 wake up
09:00 go to work
...
12:00 eat lunch
...
19:00 go home
20:00 eat dinner
21:00 sleep
I pictured if in Sindome some NPCs would close shop and head down to Drone for drinks in the evening then disperse to ther homes and leave shops guarded by autocannons or dogs or something.
Anyways, just a thought.