Christians vary on ideas about end-times. Historically, more would say the terminus arrives with Christ’s Second Coming, but popularly, there are all sorts of left-behind scenarios and 666 conspiracies.
I’m with the first group, believing it comports more reasonably with acripture, but it’s not an issue essential to anyone’s Christianity..
Whether the final event is the sudden Parousia (Second Coming), or comes with preliminary prophetic plights, the Bible doesn’t pinpoint dates.