One of the consequences of having been around for a few years (67) is that you have seen these things come along every few years.
In 1988, there were some widely believed predictions that (for what ever reason I can't recall now) that 1988 was to include the biblical second comming.
The famous event predictor of the 70s was a guy named Cayse (sp), claimed to have predicted all sorts of things and had a huge following of people; he had much of the west coast sufferring such a huge quake that much of california was going to fall into the pacific, again in 1988.
My Mother was a very devout christian, and student of the bible. I recall her talking about studies showing that the end predicted in Revelations was upon us--course that was while I was in the Navy, some time in the late 1950's
In a few more years there will be another rash, just as there were some in the 50's and in the 60's and etc etc
Vaughn