I did not collected every day because I wanted to see if one of the hens would go broody. She started sitting full time on the 5th day.
no other hens are laying eggs in her box. I read somewhere that you just leave the eggs out for a week and if a hen claims them in a week it would be find and should get chicks. The oldest eggs are 2/25/17
Then I think they should all hatch within five days of each other, they may even all hatch on the same day. But mark all of them so you can tell if another hen is coming and laying eggs in that nest and remove the new eggs so that the hatch dates aren't even more spread out.