It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Dionysius devised his system to replace the Diocletian system, named after the 51st emperor of Rome, who ruled from A.D. 284 to A.D. 305. The first year in Dionysius' Easter table, “Anno Domini 532,” followed the year “Anno Diocletiani 247.” Dionysius made the change specifically to do away with the memory of this emperor who had been a ruthless persecutor of Christians.
Dionysius never said how he determined the date of Jesus' birth, but some authors theorize that he used current beliefs about cosmology, planetary conjunctions and the precession of equinoxes to calculate the date. Dionysius attempted to set A.D. 1 as the year of Jesus Christ’s birth, but was off in his estimation by a few years, which is why the best modern estimates place Christ’s birth at 4 B.C.
According to Charles Seife in his book "Zero: The Biography of a Dangerous Idea": “To Bede, also ignorant of the number zero, the year that came before 1 A.D. [sic] was 1 B.C. There was no year zero. After all, to Bede, zero didn’t exist.”
However, zero did exist; our modern conception of zero was first published in A.D. 628 by the Indian scholar Brahmagupta. The idea would not spread to medieval Christian Europe, however, until the 11th to 13th centuries.
Rationales for the transition from A.D. to C.E. include (1) showing sensitivity to those who use the same year number as that which originated with Christians, but who are not themselves Christian, and (2) the label “Anno Domini” being arguably inaccurate, since scholars generally believe that Christ was born some years before A.D. 1 and that the historical evidence is too sketchy to allow for definitive dating.
originally posted by: DISRAELI
a reply to: LSU0408
There is no such thing as the "real" number of a year. They are conventional labels adopted for the sake of convenience.
The absence of a "zero" year is not just about whether people understood the concept.
The best way of putting it is that Jesus was notionally born at "point zero", midnight on December 31st. Purely for calendar-calculation purposes.
1 B.C.means "the last twelve months before the moment when Jesus was born"
A.D. 1 means "the first twelve months after the moment when Jesus was born".
On that basis, there is no need for the calendar to contain a "Year Zero".