On September 11 each year the Copts (old Egyptians) celebrat their New Coptic year, let us know somthing about this: The Coptic Calendar is the origin of the current one that is pre -dated to the birth of Christ. There is no such book about calendars that omits the old Egyptian one. The Coptic Church is still using the Coptic Calendar in arranging all feasts, and religious occasions. Egypt as a civil state adopted the Gregorian Calendar in the 19th century.
When did the Christian Era (A.D.) start? The Roman Calendar was dating usually to the present Emperor. Probably in the Nicene Council the idea of dating the calendar to the birth of Christ was thought. In the 6th century (in year 532) after Christ, a monk named Dionysus Exiguous, introduced the present custom of reckoning time by counting the years from the birth of Christ.
Do you know that the Coptic (Old Egyptian) Calendar is the origin of the current one that is pre -dated to the birth of Christ. There is no such book about calendars that omits the old Egyptian one. The Coptic Orthodox Church is still using the Coptic Calendar. Egypt as a civil state adopted the Gregorian Calendar in the 19th century.