All of them get out sometime between 8 to about 9:30 (when the last one crawls out). Some of them want to come out and play; some want to eat right away. Sometime between 11 and midnight when they've all eaten some and played some; they will go back for a nap; usually that's when I shut the house down for the night so no one is left to pay attention to them.
They get up throughout the night and play and eat; bark around 3-4 a.m. for attention; then again around 6-7 when everyone is getting up. If they get attention, they will stay up, if they don't; they will go to bed.
When I take them out during the day to play, they could care less if there is bright light or no light; they leap around everywhere. I have tried to use all the lights to lure them back to their pouch when playtime is over; and they will have none of that trickery. So I have to round them up individually and deposit them one by one back in their cage; then they still stay out and play for about 30 minutes in their cage, just to make sure no one is coming back for them.