How long to leave Eggs in bator after others hatch?

[ADozenGirlz]

This was my first incubation attempt. Two of the eggs hatched on day 20 within 3 hours of each other. 48 hours later, the third still hasn't pipped. How long do you leave eggs in the incubator before calling it off? Thanks for your help!

 

[BirdBrain]

Leave it until the end of day 23. I am assuming the other two are out of there. If not, get them out and quickly and spray warm mist in the bator to increase humidity before shutting it up tight. That one may just be a late quitter or an I fertile you missed earlier.