I was just wondering if I was to start incubating at night (sometime later today) would lockdown begin during the 18th day's night (if that makes sense) or would it start that morning? I'm really just wondering when I should change the humidity and temperature. Its my first incubation and I'm only planning to do 4-6 eggs but I still haven't really found the stable amount of water to put in my incubator...I'm very worried!! Also, just to clarify, how much humidity is needed? I've heard 50-60%.