By Stavros L. K. Markou
Dates are given according to the Orthodox determination of years since the time of Adam, and according to the contemporary usage of "BC" and "AD" as invented by Dionysius Exiguus. However, please take note that the Orthodox year begins in September, whereas the system of Dionysius Exiguus begins each year from January. Also, there is no year zero, and the years 1 BC and 1 AD are the exact same year according to the Dionysian system, being divided at the point of December 25. Also note that Dionysius Exiguus made an error of 8 years in determining the year of Christ’s birth.
see Historical timeline click: http://www.orthodoxfaith.com/history.html