Interesting question! Most of the time we breed in the evening, but not all our litters are born overnight. We've had a number of them born during the day while I'm at work, so I don't think you can count on the time they were bred being the time they kindle.
I was just curious since I have always bred my does in the evening. But this time around, we bred in the morning. They usually never nest during the day, thn always wait until late at nigt and usually kindle early morning. I guess we will see.
I've never had a difference in mine. I've bred, morning, early afternoon, evening, overnight and have had them kindle at any given time, usually early morning before I get up, but I've had a couple go early afternoon.
Obviously there's no hard and fast rule, but I find that my rabbits usually do kindle "right on time." I tend to bred them late at night when I feed and they tend to kindle at that time or by morning. When I used to breed them earlier in the day, they often kindled mid-afternoon.