all day but it's best at night ounce you are in you can stay as long as you want you just can't leave and come back
You won't really be able to see them until it is significantly dark outside regardless of when they are turned on. I was there at 4pm and the lights were on but you could barely see them (it was bright outside).
They are on all day
Dark. So around 5pm.
once it is dark
Thanks! Your answer is awaiting moderation.