However I do not agree with your hypothetical construct about Rev 12. I am fully conversant with astrophysics and the mazzaroth.
shalom b'SHEM Yah'shua HaMashiach
The first day of the month when the sun is in Virgo is exactly what is detailed in revelation 12.
If one does not see it, then they are welcome to it..
It is either still the first day of His 6th month or His 7th month or 8th month on His calendar.
I know this, if it is the Messiah’s birth day, we can know why Israel was instructed to circumcise their children on the 8th day... and why Yom Kippur is on the 10th day of the 7th month..
And why after he was baptized He was led into the wilderness for 40 days..
And why He was killed on the Feast of Passover, rested in the tomb on a High Sabbath and Feast of Unleavened Bread and Raised on the Feast of First Fruits..
New Moons, Sabbaths and Feasts all point to Him and the Kingdom..each one of His life events hit them just like we can expect the Word that became flesh and dwelt among us to do..
And with the help of John the revelator and The Holy Spirit , we can know things that Israel can’t explain why they do what they do..
Or the bride can choose not to seek knowledge, wisdom and understanding..