Years were often reckoned from the foundation of Rome ('ab urbe condita').The traditional date for the foundation was the year that we now call 753 BC. In the later Roman empire years were sometimes numbered by reference to 'indictions' (15-year periods instituted by Diocletian for tax purposes).
This system was made official by Pope Gregory XIII in 1582. Unfortunately, Dionysius’s calculations were a few years off. Many biblical scholars use the abbreviations BCE (“before the Common Era”) and CE (“Common Era”) in deference to those who do not come from a Christian tradition. Susan Pigott of Hardin-Simmons University) 1 Chronicles 1 Clement 1 Corinthians 1 John 1 Kings 1 Peter 1 Samuel 2 Baruch 2 Chronicles 2 Enoch 2 John 2 Kings 2 Peter 2 Samuel 3 Enoch 3 John 4 Ezra Acts Apostolic Tradition Athanasius Augustine Balaam Christology Cyprian Deuteronomy Didache E.
Massimo Pigliucci’s Rationally Speaking has a new podcast interview, Neil de Grasse Tyson on Why He Doesn’t Call Himself an Atheist.
Tyson rejects the label atheist because of the expectations that radical atheists place on him, an attitude that I can more than sympathise with.
In recent years, some historical scholars have advocated the use of the religiously neutral abbreviations BCE (for "Before Common Era") to substitute for "BC," and "CE" (for "Common Era") to replace "AD." These secular terms are both used as suffixes making them better suited to computer generated tables.
Consequently, the NASA Eclipse Home Page adopts the "BCE/CE" dating convention whenever the terminology is required.