The book of Daniel is not in chronological order. Here is a timeline of known dates and events to assist you in studying the book.
Book of Daniel
Chronology, Themes, Prophecies Yet Fulfilled
Parallel themes in Daniel show the main message: God is sovereign over all & works all things together for the good of His people & establishment of His Kingdom.
Are there prophecies in Daniel yet to be fulfilled? Yes, and we can see this as we study those associated with the fourth kingdom: Rome.