When was Jesus born?

Although the Christian calendar is nominally dated from the year of christ birt, modern researchers have palced the actual year between 4 and 7 B.C. When the calendar was changed the monk Dionysius Exiguus (500-600) set the date of  "the incarnation of the Lord" as the year 753 after the founding of the city of Rome. But his arithmetic was inaccurate. the gospels say that Jesus was born while Herod was on the throne, and Herod died about 749, according to the Roman calendar, or about 4 B.C. Also the census mentioned by St. Luke as the reason why Joseph and Mary travelled to Bethlehem seems to have been held in the Roman year 747, or 6 B.C.

(Qs and As)