I think I know why the whales have moved south on two consecutive Sunday afternoons at approximately the same time. I think they had some help from a certain group of unseen helpers who regularly meet on Sunday afternoons.
Not only that but it seems some sort of technology may not be running on Sunday afternoons which has interfered with the whales natural sonar. I wish I could prove it.
Delta and Dawn are not out of the woods yet — they have dangers to navigate downriver — so we shall see what ultimately happens with this pair of majestic creatures.
At the time of being spotted Monday morning they had moved approximately 24 miles south in 24 hours. They were about half way back to the ocean at that time.