Thomist, actually that is not true, just something the Council of Nicaea said to cover the fact that they were allowing a pagan holiday to be celebrated under guise of Christian. Luke 1.5-8-9 with 1 Chron.24.5-19 makes known when Zechariah and Elizabeth conceived John the Baptist, and Luke 1.26.36 says Elizabeth was in her sixth month when Mary became pregnant by the Holy Ghost. So Jesus was born during the feast of Tabernacles, and how apropo, since he is God's tabernacle with man. It is quite a touching story, how the swaddling cloth was what the Priest use for undergarments, and used strips of it to keep the lamps lit continually. That was the swaddling cloths the baby Jesus was wrapped in. Again, how aprapo, since he is the light of the world.
God bless
Yahweh has given you understanding! That is so beautiful!
halleluYAHWEH! may He guide us and keep us!