The fact is that we can determine precisely the ending of the Gentile Times right to the very calender month, October 1914
Precisely! Based on a historical fact, the fall of Babylon and using God’s word. Since the kingdom of God and Gentile Times are Bible subjects, in harmony and consistent with the Bible, we need to use Bible chronology and other Bible standards to extrapolate Gentile Times. Even if history seems to conflict with the Bible, we need to use Bible variables to get Bible results. So that means that to interpret prophecy, we need to use the Bible: 70 years. Ironically the 2 Temple fell in 70.