Great verse (and Seventh Day Adventists, take heed...) but do you believe God does not want us to know what day Christ was actually born?
Frankly, I’m into this date because the anti Mason party (which evolved into Lincoln’s GOP) was born and was partially founded by Pres J Quincy Adams after the murder of Captain Morgan, a convert to Christ, on September 11, 1926; Morgan’s murder on this date also galvanized the faith of Charles Finney. H W Bush gave his New World Order speeches on September 11th in 90 and ‘91 as well; all which point to an idea that people who are antiGod or antiChrist may well believe September 11 is Christ’s real birthday.
“but do you believe God does not want us to know what day Christ was actually born?”
It is not required for salvation, nor Christian maturity.
Beyond that, it does not matter, except God says He brought Messiah into the world “in the fullness of time.”