I have built a farm on - well, more like within - an asteroid field. When crops grew in my absence (when I was on another planet), I thought the game simply adds delta time to their growth when opening the map.
But I crafted some sprinklers and it works as well. When I come back, the soil is moist and the plants are grown by more than one stage. So apparently, time DOES pass when I'm gone, it's not some simple adding numbers to plant age. I also noticed food decays in my absence in chests.
Does it calculate/simulate all time passed when it loads the map? Or are the other maps running in background?
How does it work?