It usually dosn't even crack the seed for me untill after 24hrs. If you leave them wet for an hour or more, and then they dry out, I'd say there's a big chance they're gonna be useless. I put them in a wet paper towel, put that in a baggy and just set it in the attic (it's nice and warm and dark up there). I come back in 2-4 days and everything is ready to go. 100% germination rate if it's done right.