The Christian Calender begins with the traditional birth year of Jesus Christ.
Current calenders used worldwide are also the same. This is the Gregorian Calender. It was adapted from the Julian Calender.
Christianity is a schism from Judaism in the belief of a monotheistic God. Jesus was once a Jew. He never knew his church as a man. It was begun a full 50 years after his death by his Apostle Paul. Paul was once a Roman by the name of Saul.
The cornerstone of the Chistian faiths of which there are numerous denominations is The Ten Commandments.
The Christian faith adds to the Books of the Old Testament with a new covenant made by the death of Jesus Christ. The Christian separate themselves about the knowledge of God through a New Testament. A New Covenant.
