I believe the timing coincides with the birth of Jesus. The "little season" depicting the time "a thousand two hundred and threescore days" (Rev 12:6) when the woman fled into the wilderness to a place prepared for her by God (Church?). Btw I don't view the times written in the Revelation to be literal times, I believe all the times fall within the symbolic time "a thousand years".
Revelation 12 has a repeating pattern that adds a layer of complexity to it. In case you’re not familiar here is a summary of the pattern …
Vs 4 Stars of heaven cast to earth
Vs 4 devour her child
Vs 6 woman fled into wilderness
Vs 7 war in heaven between dragon and Michael
Vs 9 Dragon cast out of heaven to the earth
Vs 13 persecuted the woman
Vs 14 woman fled into wilderness
Vs 17 dragon makes war
The pattern is cast out, persecution, fleeing, and war.
I think most people place the initial fleeing in verse 6 as the flight of Mary and Joseph to Egypt. Some people then extrapolate that by putting a repeating pattern between Mary’s flight and the AOD fleeing; saying this …
Matthew 24:16 let them in Judea flee. Matthew 2:1 Jesus is born Bethlehem of Judea.
Matthew 24:17 Let him which is on the housetop not come down to take any thing out of his house. Matthew 2:13 the angel of the Lord appeareth to Joseph in a dream, saying, Arise. Joseph could’ve been sleeping on the housetop when he had the angel appear to him in the dream.
Matthew 24:18 Neither let him which is in the field return back to take his clothes. The word “his” can be either male or female. Matthew 2:13 and take the young child and his mother. Mary could’ve been gleaning in a field at evening time, with the baby Jesus being with either Joseph or Mary.
Matthew 24:19 And woe unto them that are with child, and to them that give suck in those days! Mary was no longer pregnant but had just recently given birth and was nursing when they fled to Egypt, which has mountains to which they could’ve fled to.
I haven’t got all this figured out but I do think the Revelation 12 pattern is important and it could be showing that Mary’s flight and the AOD’s flight are interlinked. If this is correct and the AOD happened in 70AD then most of Revelation 12 is already fulfilled. Maybe the Revelation 12 pattern can be applied to the Church also, I don’t know.