The Jewish month Nisan falls around end of March towards the beginning of April of the young Julian Calendar.
The conception was announced in the sixth month of the Jewish Calendar, that is, end of August towards beginning of September (Luke 1:26).
After a nine months pregnancy, Yehoshua was born on the sixteenth month of the Jewish Calendar, that is, at the end of May to the beginning of June in the Julian Calendar.
The name to be given to Jesus in Hebrew was Yehoshua after symbolism in the name (Matthew 1:21) of the book of Joshua of the Israelite Bible, who conquered Canaan and was to destroy completely all evil on the land to avoid evolving in depraved culture of the promise land. Jesus said that definitely Israel would have been corrupted if they cohabited with the former habitants of the promise land.
Luke chapter 2
Angel of YHWH announced the birth of Messiah YHWH (Luke 2:11) instead of Yehoshua, as Gabriel instructed Mary. The Shepherds were told to go look for Messiah YHWH not Yehoshua.
So, putting the annunciation name Yehoshua and the birth name Messiah YHWH, the Hebrew name of Jesus is Yehoshua Messiah YHWH, which is Jesus Christ LORD in English.
Based on Luke 1:36, John the Baptist was conceived on the first month of the Jewish calendar, that is, in March | April of of the Julian calendar.
So, he was born on the tenth month of the Jewish Calendar, that is, December | January.
So, Christian Christmas is the disguised celebration of St John the Baptist, not of Jesus. That is idolatry, just christened with the name of Yehoshua.
When it comes to religious holidays, even if we would know to the second the date and the time of birth of Jesus, we still would not be allowed to celebrate it because it is Yehoshua who decrees religious holidays or feasts as He did to Moses.
No Israelite or remnant Jew or Prophet or Apostle may decree anything religious in honor of God Yehoshua.
From the perspective of Yehoshua, all the feasts or holidays in Moses are no more because they were tied to the works of the Law in the Temple. In Moses, every single condition was to be met to officiate in the Temple, that is, the presence of Jesus inside of the Temple would still be required in the holy of the holies (Get acquainted with the epistles to the Hebrews in the New Testament). That is not going to happen ever.
On Passover day before the sabbath of unleavened bread, on a Wednesday, because the women went to the tomb on a Saturday, the first of the 7 sabbaths of Leviticus 23:15-22 that led to Pentecostal (50th) day which was a Sunday sabbath or 'in primam sabbati' according to the Latin Vulgate translation of the Christian Bible of 405 AD.
The translator of the Latin Vulgate does not place the trip of the women to the tomb on the first day of the week. The so-called English interlinear with the Vulgate does not reflect the 'primam sabbati' or 'first of the sabbaths'.
We know that Yehoshua died on a Wednesday because He predicted that He was to remain buried 3 days and 3 nights according to the symbolism of Prophet Jonah who stayed 3 days and 3 nights in the belly of the great fish (Matthew 12:40).
Perhaps, Christians do no understand the doctrines of the 7 sabbaths in the Israelite Bible, to realize that the 'sabbath' which is mentioned on the Gospel before the burial of Jesus could not be a Friday. Satan and his agents are not interested in the accuracy which is prevalent in everything in Moses.
When did Sunday observance begin as the Christian Sabbath in opposition to the Sabbath of the Creation, considering the rendering of Matthew 28:1 in the Vulgate, to the text of the Catholic Vulgate of 405 AD?
Matthew 28:1
On the first of the sabbaths, that is, on a Saturday. Not Sunday.
The whole purpose of YHWH God is to be the Redeemer and, thus, the Savior of men because of the irrevocable death verdict of the original sin of disobedience. The sinner dies. Period. YHWH had to become flesh (Micah 5:2) to try out the life of men but to live without sinning. The resurrection of Yehoshua Messiah YHWH gives life to all those of us who believe in Yehoshua Messiah YHWH including the Israelite and the remnant Jews (Acts 1:8) and who repented to become holy (Numbers 15:40, 1 Peter 1:16).
John 14:6-7 ASV
(6) Jesus saith unto him, I am the way, and the truth, and the life: no one cometh unto the Father, but by me. (7) If ye had known me, ye would have known my Father also: from henceforth ye know him, and have seen him
John 6:44 ASV
(44) no man can come to me, except the father that sent me draw him: and i will raise him up in the last day.
John 6:45 ASV
(45) it is written in the prophets, and they shall all be taught of God, every one that hath heard from the father, and hath learned, cometh unto me.
Daniel 12:1-3 ASV
(1) And at that time shall Michael stand up, the great prince who standeth for the children of thy people; and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book.
(2) And many of them that sleep in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt.
(3) And they that are wise shall shine as the brightness of the firmament; and they that turn many to righteousness as the stars for ever and ever.
Mark 7:6-7 ASV
(6) And he said unto them, Well did Isaiah prophesy of you hypocrites, as it is written, This people honoreth me with their lips, But their heart is far from me.
(7) But in vain do they worship me, Teaching as their doctrines the precepts of men.