About 4:50 I ran in to check on the eggs before going to pick up my husband from work...and we have our first chick! It must have literally just hatched, it was still very wet (still is now, actually) but had had enough time to crawl all the way across the incubator. I'm a little worried because it was flat out (but clearly still breathing and peeping) when we got back home and has some muconium stuck to it's butt, but at this point there's nothing I can do so I'll just keep an eye on it and hope for the best. I have a broody hen we'll be moving to a broody pen tonight who's just waiting to be a new momma.
Gwendalynn, I set my eggs a little sooner, we actually set the morning of 3/31, so mine are just barely a day early. My first hatch was nearly two days early, all of them had hatched out by mid-morning on day 21. I run a still air incubator and based on recommendations I read here I aim for a higher temp. of 102 (at the top of the eggs). So I'm sure my early hatches are probably because of a slightly higher incubation temperature.