Here’s an excerpt from my book, Walking by the Spirit.
There is much more to this than we have time to get into right now so I’m just going to touch on the highlights. The woman refers to the constellation Virgo, so this particular astronomical event appeared in Virgo. Clothed with the sun simply means that the sun was in the constellation of Virgo. The sun goes through all twelve constellations once per year, so it is only in Virgo for approximately one month every year. And guess what? It isn’t december!
You can’t see stars when the sun has risen, so stars are only visible together with the sun for a very short period of time, either early in the morning at dawn, or late in the evening at dusk. This event would only have been visible at either daybreak or nightfall, and it occurred during the time the sun was in Virgo in 3 BC.
Revelation also gives us further information. It tells us that the moon was visible under her feet. This phenomenon of the sun being visible in the stars of Virgo with the moon under her feet only occurred once in 3 BC in Palestine. Using astronomical data we can narrow down the time of the birth of the Lord Jesus Christ to September 11th 3BC, between sunset at 6.18 pm and moonset at 7.39 pm Palestine time. Jesus Christ was born between 6.18 PM and 7.39 PM on September 11th 3BC.