I want to candle the eggs so bad. But I don't think Buffy would like me digging around under her at night. At what point do I need give up on an egg hatching if I don't candle them? I stuck 3 under Buffy about 14 hours after the main batch. Also I am not incubating my own eggs. Maybe next year I will. But I found a local guy who hatches and puts it on a web cam. He hatches every weekend. Looks like this weekend is cochins. The kids love to watch them hatch and I don't have to worry about them opening the incubator.
I don't think you have to wait until night, if you don't want to. I got my eggs out from under two broodies this morning and brought them inside and went downstairs to a dark room and candled and made marks on them and took them back out and put them under the right hen. If you don't have a dark room, then night makes sense. Just gently reach under her and get them out. She'll just throw a little fuss, but she'll be all right. I think as far as giving up, I have waited up to a week past hatch day back when I didn't know what I was looking for. I didn't have any bad experiences with egg bombs!