CathInfo.com

Be careful Michael, this is the very same false reasoning that was applied to Christmas day coming up soon..

Incarnation Day is 25th March. Christians celebrate the birth of Christ on the 25th December, fixed days set in the calendar, ‘whilst the whole liturgical cycle has, every year, to be changed and remodelled to yield that ever varying day, which is to be the feast of the Resurrection.’ Abbot Guéranger goes on to say the four weeks of our preparation in Advent before they reach the 25th day of the month of December are in the image of the four thousand years since the creation of the universe that Genesis tells us preceded the great coming of Jesus Christ. He chose to rise from the dead after ‘three’ days, a Sunday, the day light was created visible on Earth. Christmas day however, is different to others, it falling on all the days of the week in turn so that its holiness may ‘cleanse and rid them all of the curse that Adam’s sin had put upon them.’ ‘This day is referenced not to the divisions of time marked out by God himself, but to the course of that great luminary that gives light to the world, because it gives light and warmth. Jesus our Saviour, the Light of the World, was born when the night of the idolatry and crime was at its darkest; and the day of His birth, the 25th December, is that on which the sun/Son begins to gain His ascendancy over the reign of gloomy night, to show the world His triumph of brightness.’ All the above days surely support the days of Genesis were literal days?

“On this Day which the Lord had made,’ says St Gregory of Nyssa, ‘darkness decreases and light increases, and night is driven back again. No, brethren, it is not by chance, nor by any created will, that this natural change begins on the day when He shows himself in the brightness of his coming, which is the spiritual Life of the world.... Nature seems to me to say; Know, O Man, that under the things which I show thee Mysteries lie concealed. Hast thou not seen the night, that had grown so long, suddenly checked?’--- Abbot Guéranger: The Liturgical Year.

St Augustine had said ‘The day He chose was that on which the light begins to increase. It typifies the work of Christ, who renews our interior day by day. For the eternal Creator having willed to be born in time, his Birthday would necessarily be in harmony with the rest of creation.’ Guéranger then addresses those who dare scoff at the divine plan as having its origin in the pagan feast of the sun on the winter solstice that occurs days earlier, on Dec. 21/22. ‘In their shallow erudition they conclude that a Religion could not be divinely instituted, which has certain rites or customs originating in an analogy to certain phenomena of this world; they deny what Revelation asserts, namely, that God only created the world for the sake of his Christ and his Church.’  

These are the same false accusations the Protestants use. It is the Protestants that come into a foreign nation, declare every one amalek and wipe out all who disagree and force their puritan ethos on a a said people. Catholics never did that. They would come in and find the little truth they could in your culture, something as small as light reigning over darkness, something as simple as the days getting longer, aka something the “pagan” could
relate to, and stick the gospel on top of it both philosophicaly and literally. All that said there is still a massive amount of evidence Jesus Christ was born in late December. Obviously the calendar hadn’t changed yet but the equivalent was close. Next you will be getting into eostre and blaming it on us when that never apeared until the kjv popularized a Germanic festival! These are Protestant arguments that have failed to hold up to evidence and history. And mostly take the churches good nature and use it against us. We don’t declare the world
amalek!!! We save them! 

Disagree.  There are a few mystics who have explained that the day of March 25 is one of the holiest days of the year.

March 25 - the day Adam was created.
March 25 - The feast of the Annunciation.  (Our Lord, the new Adam, was announced to the world)
December 25 - exactly 9 months after the Annunciation.
March 25 - Good Friday (Our Lord, as the new Adam, redeems the human race)

John Chrysostom disagrees! 
https://earlychurchtexts.com/public/john_chrysostom_homily_in_diem_natalem_domini_nostri_jesu_christi.htm

Hippolytus of Rome (c. 200 AD)
disagrees! 
 In his Commentary on Daniel, Hippolytus wrote: “For the first advent of our Lord in the flesh, when he was born in Bethlehem, was December 25, a Wednesday…” → This is one of the earliest explicit Christian references to December 25 as Christ’s birthday.


Obviously the entire early church agreed enough to set the date once you get up to Augustine around 380ad. They certainly didn’t just pull it out of their hat at that time.