How long do I leave the egg in the incubator?

[Vining chick]

I have floated the remaining unhatched eggs, all the others hatched today(day23) and yesterday, 4 of the 5 egss have live chicks in... How long is it safe to leave them in there before I should be concerned? Any advice greatly received!

 

[floppysquirrel04]

I would not have floated any of them if you’ve had hatches in the last 24 hours. Leave them in there a few more days.