Zeitgeist Says, "First of all, the birth sequence is completely astrological. The star in the east is Sirius, the brightest star in the night sky, which, on December 24th, aligns with the 3 brightest stars in Orion's Belt."
Actually, it always aligns with Orion's Belt. There's nothing significant about it aligning this way on 12/24. It aligns the same way every day of every year.
And how is Sirius "the star in the east"? Like all natural stars, it's in the west just as often as it is in the east. Stars can reside exclusively in the north or south, but never exclusively in the east or west, due to the rotation of the Earth.
"These 3 bright stars are called today what they were called in ancient times: The Three Kings."
First, the three stars were NOT called "The Three Kings" in ancient times. The name appears to date to no earlier than the 17th century A.D. Secondly, the Bible says nothing about Jesus' visitors being "Three Kings". They're a group of magi, not kings, and (contrary to popular belief) the Bible doesn't say there are three of them. Also, they did not visit Jesus on the day He was born, but at His home when He was probably around one year old.
"The Three Kings and the brightest star, Sirius, all point to the place of the sunrise on December 25th. This is why the Three Kings "follow" the star in the east, in order to locate the sunrise -- the birth of the sun."
Orion's belt and Sirius appear in the sky about 6 P.M. in December. Over the course of the night, the earth's movement makes it so that this line points to almost every point on the eastern horizon, as well as the southern horizon. Yes, this includes the area where the sun rises. But since it points to so many other areas, this is essentially meaningless.
Also, the stars in Orion's belt don't "follow" Sirius. Stars move east-to-west across the sky, and Sirius is located EAST of Orion's belt. Therefore, it trails along behind them as they go across the sky.