The Nativity : Chapter 12-105

Thus their ignorance and their compromises made the new Julian calendar.
12. Winter solstice of the old solar calendar of the Jews became December 12 of 5 B.C.
Why? Remember the primitive theorem of the old solar calendar of the Jews.
(- 128 × 20) + 2 = - 2558, (- 128 × [7+13]) + 2 = - 2558
The 20’s meaning of the primitive theorem was as follow: The winter solstice of January 1 of 2558 B.C. became the winter solstice of December 12 of 2 A.D.