I remember back in the early 70s that Mad magazine had a bunch of stickers in one of their super-special issues. One of them said "THE END OF THE WORLD IS COMING."
Then, in small type, it said "it's just late, like everything else!"
Wonder how these folks are going to be feeling when the day comes and goes and NOTHING HAPPENS!!!
Oh, they'll come up with the usual excuses. The guy who made THIS pronouncement made another one, targeting a date in the 90's, as I recall. Doubtless he had some excuse about "miscalculation" or whatever. NOW he's saying that the date is GUARANTEED!
Oh, how I would give real money to be able to shove a mic in his mush on May 22nd and ask, "Sir, was this yet another miscalculation, as your last prediction was?"