Chronology Of The Revelation

In Rev. 1:19, after giving John the initial vision, Jesus tells John to write things in three categories - 1) The things John had seen; 2) The things which are; and 3) The things which will take place after this. The things John had seen are the things in the vision of chapter 1. The things which are can be found in the contents of the seven letters of chapters 2 and 3.
The rest of the chapters of Revelation are dealing basically with the third category, the things which will take place aft...