CP -
First, breathe!
I have had some take their sweet old time and just when I "know" they must not be preggers, here come the babies. If you feel them in there, and you have given the girls all they need for having them. Then step back and relax. Some of my mommas have eaten like pigs right up until hours before and others won't touch anything for 2 or 3 days before. Just like us women, each of them is an individual.
Remember, rabbits don't come in heat until they have done the deal and then they may not 'take' immediately, so maybe your date has a little wiggle room.
They are laying out like a pregnant doe from what you described. Just stay back and let them relax. Mother Nature will bring them out when they are ready. If your White has had them before, she shouldn't have any problems. I would watch the other a little more, but usually instinct kicks in and they do everything they are supposed to. And I have had them wait to pull fur until 20-30 minutes before having them.
Just a pointer though, I always save some fur from a doe who pulls a lot and put it aside just in case I have one who doesn't or didn't pull enough.
Good luck. Hopefully you will have little nake wigglers really soon.
I did have a question though, are you sure that White is a NZ? she has awfully round ears for one and she seems kind of small for an NZ. The spotted one (broken castor by the looks) appears to be a Mini Rex. Is that right? We have MR and Netherlands.
Good luck.
Theri
P.S. If I talk to a vet about rabbits, I usually hear lots of laughing.