My guess is your answer stems from your understanding of Revelation. I don't want to blow up this thread with an eschatological debate so I'll pass on going down this trail. But if you ever want to send a PM with the book's purpose and an outline, I would enjoy reading it.
Well, no not just Revelation. It comes from multiple books. The prophets often mentioned end-time events in their writings. Ezekiel, Zechariah, Hosea, Jeremiah, Isaiah...even Genesis is prophetic. If we limit ourselves to just the book of Revelation, or Revelation and Daniel, we miss a lot.
But agreed. I also like to avoid straying too far to derail thread topics. Here's a link to my outline (google sheet).
Prophetic Timeline (Historicist POV)
It's best viewed on a laptop or computer versus a mobile device. The prophecy is locked on the left side to scroll up and down, and the associated passages are found horizontally scrolling the right side. And sure, we can PM about anything. The book of Revelation's purpose is to show servants everything that had happened, was currently happening, and what will happen.