Hello wannabe !
you should observe that the "The Appointed Times Of The Nations" are part of a prophecy regarding the "latter days"
and also , it had to happen within "God's people'
both the members of the "New" Jerusalem and "the Nations" are within "God's people"
take a look at the chronology of the latter days
robson, welcome !
you said I will do my own research
-- you may also check here
greetings to all