The Nativity : Chapter12-68

On Monday, December 25, 5 B.C. of the old Gregorian calendar of the Astronomy: this date did not suitable for the date of birth of Jesus. And this date of B.C. of the old Gregorian calendar of the Astronomy did not exist in the history of the Jews too. At that time, I understood that the problem of the date of birth of Jesus Christ was very hard puzzle rings. So nobody could solve this hard problem, and they had to solve at least about the kinds of calendars, the correct B.C., and the correct day of the week
On February 2, 2024 A.D., I know the definition of the Julian calendar in correctly, and the date of birth of Jesus Christ. But in 2002 A.D., in those days, I had no idea about the Julian calendar yet.
In conclusion, they might not be able to proclaim that calendar the Julian calendar.