So think it's been figured out he appeared at 11 a.m. Mountain Time despawned at 2 p.m. mountain time so that would be as has been said three hours up and if the cool-down is the same as before that means it'll be 12 hours until he reappears since you appeared at 7 p.m. mountain time and then despawned at 10 he appeared 12 hours later as said 11 a.m.