Christian era

[Sarah]

The era in use in all Christian countries, which was intendedto commence with the birth of Christ. The era as now established wasfirst used by Dionysius Exiguus (died about 540), who placed thebirth of Christ on the 25th of December in the year of Rome 754,which year he counted as 1 a. d. This date for Christ's birth is nowgenerally thought to be about four years too late.