This is really fun.
They take some time between pipping and coming out. Mine usually stay pipped for 24-48 hours before emerging.
They generally pip within a day or two of each other, but I had one clutch of 20 that took an entire week from first pip to last pip, so this could be going on for a while. I hope they finish up soon though, because the next clutch is only 4 days behind them.
(Another one of Hurley's clutches of course, mine are all only a couple weeks old so far...)