How long to leave quail eggs in the hatcher?

[shelleyd2008]

I have 18 buttons and 4 A&M cortunix eggs in the bator that have not hatched. One button hatched sometime Sunday night/Monday morning. Another pipped yesterday, but died in the shell. I only had 6 A&M eggs, 3 of which were for sure developing.

I don't plan on taking them out yet, I was just wondering how long should you leave the remaining eggs in there? The babies have food and water in the hatcher, so that's not a problem.
Yesterday was day 15/16 for the eggs.

 

[jvls1942]

with all types of eggs, I give them all an extra 3 days past the due date.. what does it hurt, right??

....jiminwisc.......