incubation time lenghts?

[zebserema]

how long will it take for my hens eggs to hatch i have heard everything from 20 to 21 to 28 and even 18 so what is the real answer for my hen?

 

[the4heathernsmom]

I was under the assumption it could be from 20 to 23 days but the norm or standard is 21 days....sometimes they might be a tiny bit early or they could be a couple days late......but I have also read on here where people have had really late hatches like 24 days. I know going with a broody hen she will normally wait if she hears the babes peeping in the shell until they all hatch. They seem to know for the most part if the egg is a dud.

 

[zebserema]

yeah i guess so i was just wanting to be sure