When Lily laid her eggs, it took the whole day. She was digging from lights on time (about 7am) and was bum down in the hole early/mid afternoon. I don't remember how long she was actually laying them for but I think it took a few hours. She finally finished covering up the hole and came back up to the top of her cage at 10.30pm the same day. I was advised by the people I got her from to override my timers and leave the lights on all night if necessary to enable her to finish the job (rather than her stopping to sleep and carrying on again in the morning). When she came back up to the top I fed and watered her and turned the light/heat off. However, next morning she was still scratching around in the laying tubs. I presumed that she could smell the eggs and needed to keep covering them. As soon as I emptied the eggs out she stayed up the top and resumed her normal routine.