First off there is no known event from the Bible that has happen in our lifetime. Anything that is claimed to have happen Biblical only shows the Bible to be a history book.
If the Bible proves to be true, meaning a divinely written book, then it does not matter what/when something in the past happened if it is before our present lifetime. It only matters pertaining to the Bible what happens presently/future, which at this point the Bible has not proving to be reliable in predicting events.
That said, and if by chance the Bible is true, and events will at some point happen, there is no reason to care about understanding Daniel (or other books). It is meaningless because they either pertain to the past which has already happen and if there is anything future about them, then Revelation covers them all.
It's pointless to talk about the 8th king (of Rev) and also about the KOTN (of Daniel), etc...
At this point there is no 8th king that has been given 42 months of power by the existing nations. Until that happens there is nothing Biblically ever going to happen in one's lifetime...NO GT, NO turning on BTG, NO Jesus coming, No Armageddon...