Birthdays - Jehovah made a massive thing of Noah's birthday. I mean MASSIVE. The exact day isn't mentioned but the turn point of Noah's age is important.
(Genesis 7:6) . . .And Noah was six hundred years old when the deluge of waters occurred on the earth. . .
(Genesis 7:11) . . .In the six hundredth year of Noah’s life, in the second month, on the seventeenth day of the month, on this day all the springs of the vast watery deep were broken open and the floodgates of the heavens were opened.
(Genesis 8:13) . . .Now in the six hundred and first year, in the first month, on the first day of the month, it came about that the waters had drained from off the earth; . . .
If to Our Father, even the very hairs of our head are all numbered, surely all the days of our life are carefully counted too. (Matthew 10:29-30)
On the matter of Christmas being different to birthdays, Christmas counts nothing. No one says 'oh on this day Jesus turned 2022'.