Can eggs hatch later than the hatch date?

[ChickenKid11]

I have 2 eggs that are ready to hatch and I candled on day 19 and both eggs were full. What should I do if I can do anything?
Thanks!

 

[gabrielle1976]

They can hatch a few days late if its only day 21 you have a couple days .

 

[mnferalkitty]

Yes they can, is it day 21 now? It has to do a lot with temp (don't change the temp now just leave it where it is)

 

[ChickenKid11]

Well today is day 21 and they are under a broody hen I can't change the temp anyway. I really hope they hatch, but I must not count my chickens before they hatch.