I candled last night on day 5.  My silkie mama laid 12 eggs since her last time being broody, and I saved them all to hatch.  I put each egg in a carton on my counter as they were laid, so some sat there for 3+ weeks, and my house is pretty warm.  Very warm, actually.  I placed all eggs under her, with fingers crossed, and 7 are developing.  I'm not surprised they're not all growing, since some of them were aging.
Anyway, I've got 7 silkie babies growing on day 6.  YAY for silkies!