As a matter of fact, our Commemoration of the Passion, Death, and Resurrection, beginning on Holy Thursday, is known as the Triduum. It is the end of the 40+ days of Lent, a time of prayer and sacrifice. Thanks for asking, and God bless you!
The fact is, JESUS WAS BORN INTO THE WORLD! If you think that's not something to celebrate, hey, you're entitled to your opinion.
As for the date, I shall bow (a metaphor, you don't have to sink your teeth into that on your next post) to a superior intellect. Frankly, I don't care. The fact is:
JESUS WAS BORN! TIDINGS OF GREAT JOY TO ALL PEOPLE!
That includes you! Rejoice!
You love to cite scripture. Did Jesus Christ write down any part of the New Testament with His own hand? No, He did not. If the Bible was to be the sole authority of the Church, shouldn't the Founder have written down His Own teachings? Shouldn't He have at least stated something similar to the following: "the written works of My disciples will be the authority upon which My Church is based?"
Did Jesus Christ with His own mouth instruct His disciples to "write down" His teachings? No. With the possible exception of the Book of Revelation (Apocalypse) by St. John the Apostle, Jesus Christ gives no such instructions to any of His disciples or Apostles. In fact, only the Apostles Sts. Peter, John, James, Jude and Matthew were inspired by the Holy Spirit to write Scripture. Why were the other seven not inspired of the Holy Spirit to "write" if the "written" Word of God is the ONLY authority to be followed in the Christian religion?
Does the Bible state It is the sole or final authority of Christianity? No. Neither this statement nor anything even close to it appears anywhere in the New Testament. In fact, Christ said that the Church is to resolve disputes among Christians, not Scripture (Matthew 18:17).
Is the Bible to be taken literally - "word for word?" No. The Bible doesn't state anywhere that It should be taken literally. The Bible was written by different authors with different literary styles at different times in history and in different languages. Therefore, the writings should be interpreted with these circumstances in mind. The Bible is a religious book, not a scientific or a history "textbook."
Is private interpretation of the Bible condoned in the Bible Itself? No, it is not (2 Peter 1:20). Was individual interpretation of Scripture practiced by the early Christians or the Jews? Again, "NO" (Acts 8:29-35). The assertion that individuals can correctly interpret Scripture is false.
Can there be more than one interpretation of the Bible? No. The word "truth" is used several times in the New Testament. However, the plural version of the word "truth" never appears in Scripture. Therefore, there can only be one Truth.
Is the Bible the sole "teaching from God?" No. The Bible Itself states that their are "oral" teachings and traditions that are to be carried on to the present-day (2 Thessalonians 2:15; 1 Corinthians 11:2; 2 Timothy 2:2; Romans 10:17; 1 Peter 1:24-25).