I set them on June 2nd, and I'm pretty sure it was in the morning, but I could be wrong. The oldest eggs in there were only a few days old (all from the fridge.) The rooster was an EE, and the hens were EE, RSLs, Buff Orpington, RIRs, and Barred Rocks. I'm not sure if any eggs were from the BRs, though.Remind me of what day the eggs are on? Better yet, what day and time did you set them?
Incubation too long
old eggs
shipping stress
some breeds take longer
are causes but like MC said, it can just take longer sometimes.