Peeping from eggs, now how long for babies to hatch out?

[Lobzi]

I have a broody hen on some eggs and yesterday, day 20 of brooding, I heard peeping coming from a couple of the eggs. I expected babies this morning but no....
How long does it take the little ones to break out of their egg shells? Anyone time the process for an average time?

 

[Lobzi]

Found two babies finally. I feel better now. So I guess about 24 hours to pip out should do it.

 

[sumi]

Congratulations! Yes, it can take up to 24 hours or more for them to hatch. It's quite a process they go through, though sometimes they pip, zip and emerge in what feels like 5 minutes!

How many eggs has she got?