That effectively happened in 1948. A second is that the Temple in Jerusalem must be rebuilt. Some say that development is imminent, but most mainstream church leaders warn against trying to set a time line based on these events. That warning, however, has barely put a dent in the end-time industry, especially when a round number rolls around on the Christian calendar, as it will next year. If the forest is wet, a match will fizzle.
Millennial dates are like very dry forests.
The first time around was no different. No one was sweating about ATMs or the integrity of the power grid, but there was fear and trembling in the land in the year 999. Others sold their possessions and headed to the hills to await the Rapture. Needless to say, things didn't go as feared, but that didn't dampen subsequent millennial speculations from prophets both quirky and dangerous. Closer to our time, a Baptist minister in New England named William Miller predicted Christ's Second Coming for 1843 and drew thousands of followers.