“I believe that Kim will fire more than one missile within hours and they will fall in the sea within 50 miles of Guam. But we wont know that until they splash.”
Are you so misguided that you think we don’t know where any missile they launch is going? As soon as thrust termination occurs, the laws of physics determine where they are going to land, but even when they are being powered, you can get a pretty good idea.
A good probable launch time would be during the eclipse.
Just an educated guess.