607x -

Secular historians and archaeologists almost universally agree that Jerusalem fell in 587 or 586 BCE . This conclusion is based on thousands of Babylonian cuneiform tablets, astronomical diaries, and business receipts from the era.

I can provide more detail on any of these areas if you clarify your interest.

Jehovah’s Witnesses believe Jerusalem fell to the Babylonians in 607 BCE. They use this date as the starting point for a "2,520-year" prophecy that leads to 1914 CE, the year they believe Jesus began ruling in heaven.