I have to agree that the actual year and date of Jesus' birth is not important and we should celebrate his coming to bring God's Word to us all.
However it is interesting to delve into history so how about this:-
If the star was Haley’s Comet, which seems likely, the Chinese and the Babylonians record its visit in 87bc. then Recorded in the Book of Han in 12BC again recorded in 66AD, 141AD and again 374AD so every 74 to 79 years.
So Jesus would have been born in 12 BC and would have been 45 when he died.
We know from Roman records that Herod died in April 4BC,
Let say in March 13BC Passover Zechariah was told he would have a son John, He goes home and Elizabeth gets pregnant
Six months later Mary is told she is going to have a child and to go and see Elizabeth
September 13BC Mary goes to see Elizabeth
December 13 BC John born
March/April 12BC Passover Jesus born - All inns full, Halley's comet lights the sky and seen by the wise men who agree to set out and find the messiah foretold and a year or so later get to Bethlehem.
March/April 12 BC Shepherds visit Baby Jesus then tell people the Messiah is born and Simeon hears of it. 7 days later Jesus is taken to the temple and Simeon is looking out for him and blesses him.
Wise men visit in say 10BC and meet Jesus who is living now in a house
Jesus taken to Egypt in 10BC
Herod finds out and kills all children 2 years or younger in 10BC
Herod dies in 4BC
Jesus Return from Egypt in before 2AD
So in 2AD aged 14 and goes to the temple for the first time