Forgive me for being ignorant to the subject but what happened 2014 years ago that did not make the cut?
-
The modern era started dating from the death of Christ 2013 years ago. There is some dispute about the actual date, however we are stuck with it now. The earth formed 4 billion years ago. there was nobody around to see that.
-
The date comes from the birth of Jesus christ anno domini AD, years before are called BC or before christ