Or how about the Mayan calendar? Back in 2012, when everyone discovered that the Mayan's ended their calendar in that year, we all just assumed it meant times up. Literally.
Then just last year, author and conspiracy theorist, David Meade, predicted that a mysterious planet called Nibiru would suddenly appear in the sky and destroy Earth.
You'd think NASA would have seen it coming, right? In fact, a top NASA Scientist has already declared that it would be impossible for Nibiru to exist. If it did, the planet's gravitational forces would have already taken out the moon.
Regardless, the end of days via Nibiru was supposed to happen last September and then got bumped to October, and when it didn't happen in November, only the theory died, not civilization.
Now, the new biblical theory predicts that Armageddon will take place this summer. Conspiracy theorist Mathieu Jean-Marc Joseph Rodrigue has done a bit of finagling with a passage in the Book of Revelations
to come up with the date of June 24, 2018.