Common Era CE is one of the notation systems for the world's most widely used calendar era. The year-numbering system used by the Gregorian calendar is used throughout the world today, and is an international standard for civil calendars. The expression has been traced back to , when it first appeared in a book by Johannes Kepler as the Latin usage annus aerae nostrae vulgaris ,   and to in English as " Vulgar [b] Era". The term "Common Era" can be found in English as early as ,  and became more widely used in the midth century by Jewish religious scholars. In the later 20th century, the use of CE and BCE was popularized in academic and scientific publications as a culturally neutral term. It is also used by some authors and publishers who wish to emphasize sensitivity to non-Christians by not explicitly referencing Jesus as " Christ " and Dominus "Lord" through use of the abbreviation [c] "AD".
What is the Difference Between AD, BC, BCE, and CE in Identifying Historical Dates?
What is the meaning of BC and AD (B.C. and A.D.)? | kerbjournal.com
As abbreviations for Before the Common Era BCE and Common Era CE , they do not specifically privilege Christianity the criticism of using "BC" and "AD" and instead simply make reference to the fact that we are living in an era shared in common between Christianity and other religions—though Christianity and Judaism are the two religions usually in mind. Here are the facts. The tradition in the West is to base the count of our years around the alleged time when Jesus would have been born. Every year since his birth is "A. Every year before his birth, counting backward is "B. C," or "Before Christ. This is a natural problem for secular academia.
The meaning of BC is Before Christ. CE is a recent term. It refers to Common Era and is used in place of A.
With some rather heated debate, authors, pundits, scholars, and literary style masters took one side over the other. Decades later, they remain split, but the consensus seems to be that the decision to use one or the other is a personal or organizational preference. The same applies to the use of periods: use or don't use them, based on personal or organizational preference. Both take as their starting point the year when 4th century Christian scholars believed Jesus Christ was born, designated as AD 1 or 1 CE.