Common Era (CE) and Before the Common Era (BCE) are year notations for the
Gregorian calendar (and its predecessor, the
Julian calendar), the world's most widely used
calendar era. Common Era and Before the Common Era are alternatives to the original
Anno Domini
The terms (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars. The term is Medieval Latin and means 'in the year of the Lord', but is often presented using "our Lord" instead of "the Lord", ...
(AD) and
Before Christ (BC) notations used for the same calendar era. The two notation systems are numerically equivalent: " CE" and "AD " each describe the current year; "400 BCE" and "400 BC" are the same year.
The expression traces back to 1615, when it first appeared in a book by
Johannes Kepler
Johannes Kepler (; ; 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws ...
as the la, annus aerae nostrae vulgaris (),
and to 1635 in English as "
Vulgar
Vulgar is a Latin word meaning "common" or "pertaining to ordinary people."
Language
* Vulgar or common language, the vernacular speech of a region or a people
* Language use characterised by vulgarity, see Vulgarism and
Other uses
*A vul ...
Era". The term "Common Era" can be found in English as early as 1708,
and became more widely used in the mid-19th century by Jewish religious scholars. Since the later 20th century, BCE and CE have become popular in academic and scientific publications because BCE and CE are religiously neutral terms. They are used by others who wish to be sensitive to non-Christians by not explicitly referring to
Jesus as "
Christ
Jesus, likely from he, יֵשׁוּעַ, translit=Yēšūaʿ, label= Hebrew/Aramaic ( AD 30 or 33), also referred to as Jesus Christ or Jesus of Nazareth (among other names and titles), was a first-century Jewish preacher and religi ...
" nor as ("Lord") through use of the other abbreviations.
History
Origins
The idea of numbering years beginning from the date then believed to be the
date of birth of Jesus, was conceived about 1,500 years ago by the Christian monk
Dionysius Exiguus. He did this to replace the then dominant
Era of Martyrs system, because he did not wish to continue the memory of a tyrant who persecuted Christians.
He numbered years from an initial reference date ("
epoch"), an event he referred to as the
Incarnation of Jesus.
Dionysius labeled the column of the table in which he introduced the new era as "''Anni Domini Nostri Jesu Christi''".
This way of numbering years became more widespread in Europe with its use by
Bede
Bede ( ; ang, Bǣda , ; 672/326 May 735), also known as Saint Bede, The Venerable Bede, and Bede the Venerable ( la, Beda Venerabilis), was an English monk at the monastery of St Peter and its companion monastery of St Paul in the Kingdom o ...
in England in 731. Bede also introduced the practice of dating years before what he supposed was the year of birth of Jesus, and the practice of not using a
year zero. In 1422,
Portugal became the last
Western European country to
switch to the system begun by Dionysius.
Vulgar Era

The term "Common Era" is traced back in English to its appearance as "
Vulgar
Vulgar is a Latin word meaning "common" or "pertaining to ordinary people."
Language
* Vulgar or common language, the vernacular speech of a region or a people
* Language use characterised by vulgarity, see Vulgarism and
Other uses
*A vul ...
Era" to distinguish dates on the Ecclesiastic calendar in popular use from dates of the
regnal year, the year of the reign of a sovereign, typically used in national law. (The word 'vulgar' originally meant 'of the ordinary people', with no derogatory associations.)
The first known use of the Latin term occurred in a 1615 book by
Johannes Kepler
Johannes Kepler (; ; 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws ...
.
Kepler uses it again, as , in a 1616 table of
ephemerides,
[ ] and again, as , in 1617.
[ * Translation of title (per 1635 English edition): ''New Ephemerids for the Celestiall Motions, for the Yeeres of the Vulgar Era 1617–1636''] A 1635 English edition of that book has the title page in English – so far, the earliest-found use of ''Vulgar Era'' in English.
[ ] A 1701 book edited by John LeClerc includes "Before Christ according to the Vulgar Æra, 6". A 1716 book in English by Dean
Humphrey Prideaux says, "before the beginning of the vulgar æra, by which we now compute the years from his incarnation." A 1796 book uses the term "vulgar era of the nativity".
The first known use of "Christian Era" appears as the Latin phrase on the title page of a 1584 theology book. In 1649, the Latin phrase appeared in the title of an English almanac. A 1652 ephemeris is the first instance found so far of the English use of "Christian Era".
The English phrase "Common Era" appears at least as early as 1708,
[ ] and in a 1715 book on astronomy it is used interchangeably with "Christian Era" and "Vulgar Era". A 1759 history book uses ''common æra'' in a generic sense, to refer to the common era of the Jews. The first use found so far of the phrase "before the common era" is in a 1770 work that also uses ''common era'' and ''vulgar era'' as synonyms, in a translation of a book originally written in German.
[ ] The 1797 edition of the
Encyclopædia Britannica uses the terms ''vulgar era'' and ''common era'' synonymously (meaning not the regnal year). In 1835, in his book ''
Living Oracles
The Living Oracles is a translation of the New Testament compiled and edited by the early Restoration Movement leader Alexander Campbell.Gary Holloway"Alexander Campbell as a Publisher" ''Restoration Quarterly'', Vol. 37 No. 1 (1995)Douglas Al ...
'',
Alexander Campbell, wrote: "The vulgar Era, or Anno Domini; the fourth year of Jesus Christ, the first of which was but eight days", and also refers to the ''common era'' as a synonym for ''vulgar era'' with "the fact that our Lord was born on the 4th year before the vulgar era, called Anno Domini, thus making (for example) the 42d year from his birth to correspond with the 38th of the common era". The ''
Catholic Encyclopedia'' (1909) in at least one article reports all three terms (Christian, Vulgar, Common Era) being commonly understood by the early 20th century.
The phrase "common era", in
lower case
Letter case is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smaller lowercase (or more formally ''minuscule'') in the written representation of certain languages. The writing ...
, also appeared in the 19th century in a 'generic' sense, not necessarily to refer to the Christian Era, but to any system of dates in common use throughout a civilization. Thus, "the common era of the Jews", "the common era of the Mahometans", "common era of the world", "the common era of the foundation of Rome". When it did refer to the Christian Era, it was sometimes qualified, e.g., "common era of the Incarnation", "common era of the Nativity", or "common era of the birth of Christ".
An adapted translation of ''Common Era'' into
Latin as (''era'' or, with a
macron
Macron may refer to:
People
* Emmanuel Macron (born 1977), president of France since 2017
** Brigitte Macron (born 1953), French teacher, wife of Emmanuel Macron
* Jean-Michel Macron (born 1950), French professor of neurology, father of Emmanu ...
, being an alternative form of ; is the usual form) was adopted in the 20th century by some followers of
Aleister Crowley, and thus the abbreviation "e.v." or "EV" may sometimes be seen as a replacement for AD.
History of the use of the CE/BCE abbreviation
Although
Jews have their own
Hebrew calendar, they often use the
Gregorian calendar without the AD prefix. As early as 1825, the abbreviation VE (for Vulgar Era) was in use among Jews to denote years in the Western calendar. , Common Era notation has also been in use for Hebrew lessons for more than a century.
In 1856, Rabbi and historian
Morris Jacob Raphall used the abbreviations CE and BCE in his book ''Post-Biblical History of The Jews''. Jews have also used the term Current Era.
Contemporary usage
Some academics in the fields of
theology,
education,
archaeology
Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of Artifact (archaeology), artifacts, architecture, biofact (archaeology), biofacts ...
and
history have adopted CE and BCE notation despite some disagreement. Several style guides now prefer or mandate its use.
United Kingdom
In 2002, an advisory panel for the religious education syllabus for
England and Wales recommended introducing BCE/CE dates to schools,
and by 2018 some local education authorities were using them.
In 2018, the
National Trust said it would continue to use BC/AD as its house style.
["National Trust tells properties to stop dropping BC and AD out of fear it might offend non-Christians"]
'' The Daily Telegraph'', by Henry Bodkin, 12 November 2018 English Heritage explains its era policy thus: "It might seem strange to use a Christian calendar system when referring to British prehistory, but the BC/AD labels are widely used and understood." Some parts of the BBC use BCE/CE, but some presenters have said they will not.
As of October 2019, the BBC News style guide has entries for AD and BC, but not for CE or BCE.
The style guide for ''
The Guardian'' says, under the entry for CE/BCE: "some people prefer CE (common era, current era, or Christian era) and BCE (before common era, etc) to AD and BC, which, however, remain our style".
United States
In the United States, the use of the BCE/CE notation in
textbooks was reported in 2005 to be growing.
Some publications have transitioned to using it exclusively. For example, the 2007 World Almanac was the first edition to switch to BCE/CE, ending a period of 138 years in which the traditional BC/AD dating notation was used. BCE/CE is used by the
College Board
The College Board is an American nonprofit organization that was formed in December 1899 as the College Entrance Examination Board (CEEB) to expand access to higher education. While the College Board is not an association of colleges, it runs ...
in its history tests,
and by the
Norton Anthology of English Literature. Others have taken a different approach. The US-based
History Channel uses BCE/CE notation in articles on non-Christian religious topics such as
Jerusalem and Judaism.
[;] The 2006 style guide for the Episcopal Diocese ''Maryland Church News'' says that BCE and CE should be used.
In June 2006, in the United States, the Kentucky State School Board reversed its decision to use BCE and CE in the state's new Program of Studies, leaving education of students about these concepts a matter of local discretion.
Australia
In 2011, media reports suggested that the BC/AD notation in Australian school textbooks would be replaced by BCE/CE notation. The change drew opposition from some politicians and church leaders. Weeks after the story broke, the
Australian Curriculum, Assessment and Reporting Authority denied the rumour and stated that the BC/AD notation would remain, with CE and BCE as an optional suggested learning activity.
Canada
In 2013, the
Canadian Museum of Civilization (now the Canadian Museum of History) in
Gatineau
Gatineau ( ; ) is a city in western Quebec, Canada. It is located on the northern bank of the Ottawa River, immediately across from Ottawa, Ontario. Gatineau is the largest city in the Outaouais administrative region and is part of Canada's N ...
(opposite
Ottawa
Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core ...
), which had previously switched to BCE/CE, decided to change back to BC/AD in material intended for the public while retaining BCE/CE in academic content.
["Museum of Civilization putting the 'Christ' back in history as BC and AD return"](_blank)
by Sean Kilpatrick/The Canadian Press, ''National Post'', 27 February 2013
Rationales
Support
The use of CE in Jewish scholarship was historically motivated by the desire to avoid the implicit "Our Lord" in the abbreviation ''AD''. Although other aspects of dating systems are based in Christian origins, AD is a direct reference to
Jesus as Lord.
Proponents of the Common Era notation assert that the use of BCE/CE shows sensitivity to those who use the same year numbering system as the one that originated with and is currently used by
Christians, but who are not themselves Christian.
Former
United Nations Secretary-General Kofi Annan has argued:
Adena K. Berkowitz, in her application to argue before the
United States Supreme Court, opted to use BCE and CE because "Given the multicultural society that we live in, the traditional Jewish designationsB.C.E. and C.E. cast a wider net of inclusion".
Opposition
Christian, non-Christian, and non-religious individuals who oppose the usage of Common Era often note the fact that there is no difference in the origin of the two systems. BCE and CE are still based on BC and AD and denote the periods before and after Jesus was born.
Some oppose the Common Era notation for explicitly religious reasons, because the BC/AD tradition is based on the presumptive year of the conception or birth of Jesus. Some
Christians are offended by the removal of the reference to him in era notation. The
Southern Baptist Convention
The Southern Baptist Convention (SBC) is a Christian denomination based in the United States. It is the world's largest Baptist denomination, and the largest Protestant and second-largest Christian denomination in the United States. The wor ...
supports retaining the BC/AD abbreviations.
Roman Catholic priest and writer on interfaith issues
Raimon Panikkar argued that the BCE/CE usage is the less inclusive option, since in his view they are still using the Christian calendar, forcing it on other nations.
In 1993, the English-language expert
Kenneth G. Wilson speculated a
slippery slope scenario in his style guide that "if we do end by casting aside the AD/BC convention, almost certainly some will argue that we ought to cast aside as well the conventional numbering system
hat is, the method of numbering yearsitself, given its Christian basis."
The short-lived
French Republican Calendar, for example, began with the first year of the
French First Republic
In the history of France, the First Republic (french: Première République), sometimes referred to in historiography as Revolutionary France, and officially the French Republic (french: République française), was founded on 21 September 1792 ...
and rejected the
seven-day week (with its connections to the
Book of Genesis
The Book of Genesis (from Greek ; Hebrew: בְּרֵאשִׁית ''Bəreʾšīt'', "In hebeginning") is the first book of the Hebrew Bible and the Christian Old Testament. Its Hebrew name is the same as its first word, ( "In the beginning" ...
) for a ten-day week.
Conventions in style guides
The abbreviation BCE, just as with BC, always follows the year number. Unlike AD, which still often precedes the year number, CE always follows the year number (if context requires that it be written at all). Thus, the current year is written as in both notations (or, if further clarity is needed, as CE, or as AD ), and the year that
Socrates died is represented as 399 BCE (the same year that is represented by 399 BC in the BC/AD notation). The abbreviations are sometimes written with small capital letters, or with
periods (e.g., "
B.C.E." or "C.E."). The US-based
Society of Biblical Literature
The Society of Biblical Literature (SBL), founded in 1880 as the Society of Biblical Literature and Exegesis, is an American-based learned society dedicated to the academic study of the Bible and related ancient literature. Its current stated mis ...
style guide for academic texts on religion prefers BCE/CE to BC/AD.
Similar conventions in other languages
* In
Germany, Jews in
Berlin
Berlin is Capital of Germany, the capital and largest city of Germany, both by area and List of cities in Germany by population, by population. Its more than 3.85 million inhabitants make it the European Union's List of cities in the European U ...
seem to have already been using words translating to "(before the) common era" in the 18th century, while others like
Moses Mendelssohn opposed this usage as it would hinder the integration of Jews into German society.
The formulation seems to have persisted among German Jews in the 19th century in forms like (before the common chronology). In 1938
Nazi Germany the use of this convention was also prescribed by the
National Socialist Teachers League. However, it was soon discovered that many German Jews had been using the convention ever since the 18th century, and
''Time'' magazine found it ironic to see "
Aryan
Aryan or Arya (, Indo-Iranian *''arya'') is a term originally used as an ethnocultural self-designation by Indo-Iranians in ancient times, in contrast to the nearby outsiders known as 'non-Aryan' (*''an-arya''). In Ancient India, the term ' ...
s following Jewish example nearly 200 years later".
* In
Spanish, common forms used for "BC" are and (for "", "before Christ"), with variations in punctuation and sometimes the use of () instead of . The
Real Academia Española
The Royal Spanish Academy ( es, Real Academia Española, generally abbreviated as RAE) is Spain's official royal institution with a mission to ensure the stability of the Spanish language. It is based in Madrid, Spain, and is affiliated with ...
also acknowledges the use of () and ().
In scholarly writing, is the equivalent of the English "BCE", "" or "Before the Common Era".
* In
Welsh
Welsh may refer to:
Related to Wales
* Welsh, referring or related to Wales
* Welsh language, a Brittonic Celtic language spoken in Wales
* Welsh people
People
* Welsh (surname)
* Sometimes used as a synonym for the ancient Britons (Celtic peopl ...
, OC can be expanded to equivalents of both AD () and CE (); for dates before the Common Era, CC (traditionally, ) is used exclusively, as would abbreviate to a mild obscenity.
* In
Russian since the
October Revolution (1917) , lit. ''before our era'') and lit. ''of our era'') are used almost universally. Within Christian churches , i.e. ''before/after the birth of Christ'', equivalent to la,
Ante Christum natum) remains in use.
*In
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
, upon the foundation of the
Republic of China
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast ...
, the
Government in Nanking adopted the
Republic of China calendar with 1912 designated as year 1, but used the Western calendar for international purposes. The translated term was zh, 西元 (, "Western Era"), which is still used in
Taiwan in formal documents. In 1949, the
People's Republic of China adopted (, "Common Era") for both internal and external affairs in
mainland China. This notation was extended to Hong Kong in 1997 and Macau in 1999 (de facto extended in 1966) through Annex III of
Hong Kong Basic Law and
Macau Basic Law, thus eliminating the ROC calendar in these areas. BC is translated into Chinese as (, "Before the Common Era").
* In
Czech, the "n. l." ( which translates as ''of our year count'') and "př. n. l." or "před n. l." ( meaning ''before our year count'') is used, always after the year number. The direct translation of AD (, abbreviated as ''L. P.'') or BC (, abbreviated as ''př. Kr.'') is seen as archaic.
*In
Croatian
Croatian may refer to:
* Croatia
*Croatian language
*Croatian people
*Croatians (demonym)
See also
*
*
* Croatan (disambiguation)
* Croatia (disambiguation)
* Croatoan (disambiguation)
* Hrvatski (disambiguation)
* Hrvatsko (disambiguation)
* S ...
the common form used for ''BC'' and ''AD'' are ''pr. Kr.'' (''prije Krista'', "before Christ") and ''p. Kr.'' (''poslije Krista'', ''after Christ''). The abbreviations
''pr. n. e.'' (''prije nove ere'', ''before new era'') and
''n. e.'' (''nove ere'', ''(of the) new era'')
have also recently been introduced.
* In
Danish, "f.v.t." (, ''before our time reckoning'') and "e.v.t." (, ''after our time reckoning'') are used as BCE/CE are in English. Also commonly used are "f.Kr." (, ''before Christ'') and "e.Kr." (, ''after Christ''), which are both placed after the year number in contrast with BC/AD in English.
See also
*
Astronomical year numbering
*
Before Present
*
Calendar
A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single and specific day within such a system. A calendar is also a physi ...
*
Calendar reform
*
Holocene Era
*
List of calendars
Notes
References
External links
*
*
{{Portal bar, History
1615 introductions
Calendar eras
Chronology
Linguistic controversies
Secularism
17th-century neologisms