If you set your eggs at 12 PM on October the 14th, 21 days will not have passed until at least 12 noon on Thursday of this week. I suspect that the eggs are weak because the flock either lacks something in their diet or the eggs were improperly stored or handled.I put them in all at the same time on october 14 it pipped Thursday and did nothing else so I waited bit the other two that pipped with it didnt make it they died in the shell