I remember the first time I heard about a doomsday. It was 1976 I believe, and it was to be The Battle of Armageddon. The Jehovahs Witnesses were beating the drum for that one. I can't remember what the explanation was, as to why they were wrong. The doomsday purveyors always find an excuse, and move on to the next doomsday theory.
One reason they're stuck in that mindset is their horrendous, ignorant interpretation of eschatological passages in the Bible. The Second Coming was never intended to be understood as a physical, bodily return, but a figurative one. "On the clouds" is a Hebraistic term that denotes divine judgment. So the return that heralds the end was a return
in judgment, and one that Christ repeatedly said would occur in the lifetime of His contemporaries, specifically some of His disciples and Caiaphas the High Priest, who Jesus specifically told he would be alive to see His return.
Lo and behold, in 70AD, God sent the Romans to judge Israel for rejecting their Messiah.
All prophecy has been fulfilled. Anyone waiting for more is wasting their time, and anyone instructing others to wait for more is waisting other people's time."The end" was the end of the Old Covenant age, not the end of the world.
I'd sure love to be a fly on the wall at the Camping residence right now.