Are they still good?

[beginnerchick08]

My chicken has been sitting on eggs for 3 days and today at noon she was still sitting on them but i just got home from work at 6 and she was sitting on a different nest box. I put her back on the right one right away but the eggs already felt cool. Are my eggs ruined??? Do i have to start over?

 

[hplowe]

I am no expert, but I spoke to one yesterday, he told me each 24 hr period takes 10% of the "viability" away... so 1 day = 90% chance it'll hatch, 10 days = 0% chance