The Christian origin of the designation of years as “B.C.” (Before Christ) and “A.D.” (Anno Domini, Latin for “in the year of the Lord") has led some people to favor a less culturally specific designation. “C.E.” stands for “the Common Era,” and “B.C.E.” for “Before the Common Era.” In practice, the terms are perfect synonyms for “B.C.” and “A.D.”
Note: This guide is still in the early stages of development.
Three question marks mean I have to write more on the subject. Bear with me.