System of dating
His idea was popularised in England by the Venerable Bede, who added the notion of counting backwards for dates 'Before Christ'.However, it only gained universal acceptance among Christians in the 15th century.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.The western-style year dating convention commonly used in many parts of the world was created by the monk Dionysius Exiguus in or about the year AD 532.The convention is based on Exiguus' determination of the year in which Jesus Christ was born.The Common Era retains a Christian reference point - the birth of Christ - but this may be regarded as a historical accident of globalisation.
In general, any given year "x BCE" becomes "-(x-1)" in the astronomical year numbering system.
Daniel owes its prominence in both Jewish and Christian thought to prophecies concerning the coming in glory of a 'son of man' (the Messiah) and his foundation of a 'holy kingdom of God'.
The use of BC, however unintentionally, suggests that the prophesied Messiah arrived with Christ, whose birth initiated the kingdom of God on earth.
But to say that Daniel was written in a given century BC is to do so.
BC means 'before Christ', and 'Christ' is English for the Greek Khristos or 'anointed one; a literal translation of Hebrew Messiah.
However, Exiguus' dating system still lacks a "0" year which makes calendrical calculations awkward.