by this reckoning, the Anuniciation would have come about this time. Could be that the Christian calandar we have might have come about as the Church sought to disaccosociate herself from the Jewish calendar, to brinbg herhelf in line with the Roman calendar.
Nine months back from Sukkot is Chanukah where My research has shown the error crept in There was an effort to disassociate from anything The Annunciation would have occurred at Chanukah.
shalom b'shem Yah'shua
the "light of the world" entered the temple.
during the fourth century under Constantine and
during the council of Nicea.
Jewish and introduce substitutes from paganism:
Ishtar and Sol Invictus .