Anno Domini

Last updated

Anno Domini inscription at Klagenfurt Cathedral, Austria Austria Klagenfurt Dome 12.jpg
Anno Domini inscription at Klagenfurt Cathedral, Austria

The terms anno Domini (AD) and before Christ (BC) [note 1] are used to label or number years in the Julian and Gregorian calendars. The term anno Domini is Medieval Latin and means "in the year of the Lord" [1] but is often presented using "our Lord" instead of "the Lord", [2] [3] taken from the full original phrase "anno Domini nostri Jesu Christi", which translates to "in the year of our Lord Jesus Christ".

Contents

This calendar era is based on the traditionally reckoned year of the conception or birth of Jesus of Nazareth, with AD counting years from the start of this epoch and BC denoting years before the start of the era. There is no year zero in this scheme, so the year AD 1 immediately follows the year 1 BC. This dating system was devised in 525 by Dionysius Exiguus of Scythia Minor but was not widely used until after 800. [4] [5]

The Gregorian calendar is the most widely used calendar in the world today. For decades, it has been the unofficial global standard, adopted in the pragmatic interests of international communication, transportation, and commercial integration, and recognized by international institutions such as the United Nations. [6]

Traditionally, English follows Latin usage by placing the "AD" abbreviation before the year number. [note 2] However, BC is placed after the year number (for example: AD 2020, but 68 BC), which also preserves syntactic order. The abbreviation is also widely used after the number of a century or millennium, as in "fourth century AD" or "second millennium AD" (although conservative usage formerly rejected such expressions). [8] Because BC is the English abbreviation for Before Christ, it is sometimes incorrectly concluded that AD means After Death, i.e., after the death of Jesus. However, this would mean that the approximate 33 years commonly associated with the life of Jesus would be included in neither the BC nor the AD time scales. [9]

Terminology that is viewed by some as being more neutral and inclusive of non-Christian people is to call this the Current or Common Era (abbreviated as CE), with the preceding years referred to as Before the Common or Current Era (BCE). Astronomical year numbering and ISO 8601 avoid words or abbreviations related to Christianity but use the same numbers for AD years.

History

The Anno Domini dating system was devised in 525 by Dionysius Exiguus to enumerate the years in his Easter table. His system was to replace the Diocletian era that had been used in an old Easter table because he did not wish to continue the memory of a tyrant who persecuted Christians. [10] The last year of the old table, Diocletian Anno Martyrium 247, was immediately followed by the first year of his table, Anno Domini 532. When he devised his table, Julian calendar years were identified by naming the consuls who held office that year—he himself stated that the "present year" was "the consulship of Probus Junior", which was 525 years "since the incarnation of our Lord Jesus Christ". [11] Thus Dionysius implied that Jesus' incarnation occurred 525 years earlier, without stating the specific year during which his birth or conception occurred. "However, nowhere in his exposition of his table does Dionysius relate his epoch to any other dating system, whether consulate, Olympiad, year of the world, or regnal year of Augustus; much less does he explain or justify the underlying date." [12]

Bonnie J. Blackburn and Leofranc Holford-Strevens briefly present arguments for 2 BC, 1 BC, or AD 1 as the year Dionysius intended for the Nativity or incarnation. Among the sources of confusion are: [5]

It is not known how Dionysius established the year of Jesus's birth. Two major theories are that Dionysius based his calculation on the Gospel of Luke, which states that Jesus was "about thirty years old" shortly after "the fifteenth year of the reign of Tiberius Caesar", and hence subtracted thirty years from that date, or that Dionysius counted back 532 years from the first year of his new table. [13] [14] [15] It has also been speculated by Georges Declercq [16] that Dionysius' desire to replace Diocletian years with a calendar based on the incarnation of Christ was intended to prevent people from believing the imminent end of the world. At the time, it was believed by some that the resurrection of the dead and end of the world would occur 500 years after the birth of Jesus. The old Anno Mundi calendar theoretically commenced with the creation of the world based on information in the Old Testament. It was believed that, based on the Anno Mundi calendar, Jesus was born in the year 5500 (5500 years after the world was created) with the year 6000 of the Anno Mundi calendar marking the end of the world. [17] [18] Anno Mundi 6000 (approximately AD 500) was thus equated with the end of the world [19] but this date had already passed in the time of Dionysius.

Popularization

The Anglo-Saxon historian Saint (Venerable) Bede, who was familiar with the work of Dionysius Exiguus, used Anno Domini dating in his Ecclesiastical History of the English People , which he completed in AD 731. In the History he also used the Latin phrase ante [...] incarnationis dominicae tempus anno sexagesimo ("in the sixtieth year before the time of the Lord's incarnation"), which is equivalent to the English "before Christ", to identify years before the first year of this era. [20] Both Dionysius and Bede regarded Anno Domini as beginning at the incarnation of Jesus Christ, but "the distinction between Incarnation and Nativity was not drawn until the late 9th century, when in some places the Incarnation epoch was identified with Christ's conception, i. e., the Annunciation on March 25" ("Annunciation style" dating). [21]

Statue of Charlemagne by Agostino Cornacchini (1725), at St. Peter's Basilica, Vatican City. Charlemagne promoted the usage of the Anno Domini epoch throughout the Carolingian Empire. Charlemagne Agostino Cornacchini Vatican 2.jpg
Statue of Charlemagne by Agostino Cornacchini (1725), at St. Peter's Basilica, Vatican City. Charlemagne promoted the usage of the Anno Domini epoch throughout the Carolingian Empire.

On the continent of Europe, Anno Domini was introduced as the era of choice of the Carolingian Renaissance by the English cleric and scholar Alcuin in the late eighth century. Its endorsement by Emperor Charlemagne and his successors popularizing the use of the epoch and spreading it throughout the Carolingian Empire ultimately lies at the core of the system's prevalence. According to the Catholic Encyclopedia, popes continued to date documents according to regnal years for some time, but usage of AD gradually became more common in Catholic countries from the 11th to the 14th centuries. [22] In 1422, Portugal became the last Western European country to switch to the system begun by Dionysius. [23] Eastern Orthodox countries only began to adopt AD instead of the Byzantine calendar in 1700 when Russia did so, with others adopting it in the 19th and 20th centuries.

Although Anno Domini was in widespread use by the 9th century, the term "Before Christ" (or its equivalent) did not become common until much later. Bede used the expression "anno [...] ante incarnationem Dominicam" (in the year before the incarnation of the Lord) twice. "Anno ante Christi nativitatem" (in the year before the birth of Christ) is found in 1474 in a work by a German monk. [note 3] In 1627, the French Jesuit theologian Denis Pétau (Dionysius Petavius in Latin), with his work De doctrina temporum, popularized the usage ante Christum (Latin for "Before Christ") to mark years prior to AD. [24] [25] [26]

New year

When the reckoning from Jesus' incarnation began replacing the previous dating systems in western Europe, various people chose different Christian feast days to begin the year: Christmas, Annunciation, or Easter. Thus, depending on the time and place, the year number changed on different days in the year, which created slightly different styles in chronology: [27]

With these various styles, the same day could, in some cases, be dated in 1099, 1100 or 1101.

Birth date of Jesus

The date of birth of Jesus of Nazareth is not stated in the gospels or in any secular text, but most scholars assume a date of birth between 6 BC and 4 BC. [28] The historical evidence is too fragmentary to allow a definitive dating, [29] but the date is estimated through two different approaches – one by analyzing references to known historical events mentioned in the Nativity accounts in the Gospels of Luke and Matthew and the second by working backwards from the estimation of the start of the ministry of Jesus. [30] [31]

Other eras

During the first six centuries of what would come to be known as the Christian era, European countries used various systems to count years. Systems in use included consular dating, imperial regnal year dating, and Creation dating.[ citation needed ]

Although the last non-imperial consul, Basilius, was appointed in 541 by Emperor Justinian I, later emperors through to Constans II (641–668) were appointed consuls on the first of January after their accession. All of these emperors, except Justinian, used imperial post-consular years for the years of their reign, along with their regnal years. [32] Long unused, this practice was not formally abolished until Novell XCIV of the law code of Leo VI did so in 888.

Another calculation had been developed by the Alexandrian monk Annianus around the year AD 400, placing the Annunciation on 25 March AD 9 (Julian)—eight to ten years after the date that Dionysius was to imply. Although this incarnation was popular during the early centuries of the Byzantine Empire, years numbered from it, an Era of Incarnation, were exclusively used and are still used in Ethiopia. This accounts for the seven- or eight-year discrepancy between the Gregorian and Ethiopian calendars. Byzantine chroniclers like Maximus the Confessor, George Syncellus, and Theophanes dated their years from Annianus' creation of the world. This era, called Anno Mundi , "year of the world" (abbreviated AM), by modern scholars, began its first year on 25 March 5492 BC. Later Byzantine chroniclers used Anno Mundi years from 1 September 5509 BC, the Byzantine Era. No single Anno Mundi epoch was dominant throughout the Christian world. Eusebius of Caesarea in his Chronicle used an era beginning with the birth of Abraham, dated in 2016 BC (AD 1 = 2017 Anno Abrahami). [33]

Spain and Portugal continued to date by the Spanish Era (also called Era of the Caesars), which began counting from 38 BC, well into the Middle Ages. In 1422, Portugal became the last Catholic country to adopt the Anno Domini system. [22]

The Era of Martyrs, which numbered years from the accession of Diocletian in 284, who launched the most severe persecution of Christians, was used by the Church of Alexandria and is still used, officially, by the Coptic Orthodox and Coptic Catholic churches. It was also used by the Ethiopian church. Another system was to date from the crucifixion of Jesus, which as early as Hippolytus and Tertullian was believed to have occurred in the consulate of the Gemini (AD 29), which appears in some medieval manuscripts.

CE and BCE

Alternative names for the Anno Domini era include vulgaris aerae (found 1615 in Latin), [34] "Vulgar Era" (in English, as early as 1635), [35] "Christian Era" (in English, in 1652), [36] "Common Era" (in English, 1708), [37] and "Current Era". [38] Since 1856, [39] the alternative abbreviations CE and BCE (sometimes written C.E. and B.C.E.) are sometimes used in place of AD and BC.

The "Common/Current Era" ("CE") terminology is often preferred by those who desire a term that does not explicitly make religious references. [40] [41] For example, Cunningham and Starr (1998) write that "B.C.E./C.E. […] do not presuppose faith in Christ and hence are more appropriate for interfaith dialog than the conventional B.C./A.D." [42] Upon its foundation, the Republic of China adopted the Minguo Era but used the Western calendar for international purposes. The translated term was 西 (xī yuán; 'Western Era'). Later, in 1949, the People's Republic of China adopted 公元 (gōngyuán; 'Common Era') for all purposes domestic and foreign.

No year zero: start and end of a century

In the AD year numbering system, whether applied to the Julian or Gregorian calendars, AD 1 is immediately preceded by 1 BC, with nothing in between them (there was no year zero). There are debates as to whether a new decade, century, or millennium begins on a year ending in zero or one. [4]

For computational reasons, astronomical year numbering and the ISO 8601 standard designate years so that AD 1 = year 1, 1 BC = year 0, 2 BC = year −1, etc. [note 4] In common usage, ancient dates are expressed in the Julian calendar, but ISO 8601 uses the Gregorian calendar and astronomers may use a variety of time scales depending on the application. Thus dates using the year 0 or negative years may require further investigation before being converted to BC or AD.

See also

Notes

  1. The words "anno" and "before" are often capitalized, but this is considered incorrect by many authorities and either not mentioned in major dictionaries or only listed as an alternative.
  2. This convention comes from grammatical usage. Anno 500 means "in the year 500"; anno domini 500 means "in the year 500 of Our Lord". Just as "500 in the year" is not good English syntax, neither is 500 AD; whereas "AD 500" preserves syntactic order when translated. [7]
  3. Werner Rolevinck in Fasciculus temporum (1474) used Anno ante xpi nativitatem (in the year before the birth of Christ) for all years between creation and Jesus. "xpi" comes from the Greek χρ (chr) in visually Latin letters, together with the Latin ending -i, thus abbreviating Christi ("of Christ"). This phrase appears upside down in the centre of recto folios (right hand pages). From Jesus to Pope Sixtus IV he usually used Anno Christi or its abbreviated form Anno xpi (on verso folios—left hand pages). He used Anno mundi alongside all of these terms for all years.
  4. To convert from a year BC to astronomical year numbering, reduce the absolute value of the year by 1, and prefix it with a negative sign (unless the result is zero). For years AD, omit the AD and prefix the number with a plus sign (plus sign is optional if it is clear from the context that the year is after the year 0). [43]

Related Research Articles

<i>Ab urbe condita</i> Ancient Roman year-numbering system

Ab urbe condita, or Anno urbis conditae, often abbreviated as AUC, is an expression used in antiquity and by classical historians to refer to a given year in Ancient Rome. In reference to the traditional year of the foundation of Rome, 753 BC would be written AUC 1, whereas AD 1 would be AUC 754. The foundation of the Roman Empire in 27 BC would be AUC 727.

Common Era (CE) is one of the year notations used for the Gregorian calendar, the world's most widely used calendar era. Before the Common Era or Before the Current Era (BCE) is the era before CE. BCE and CE are alternatives to the Dionysian BC and AD notations respectively. The Dionysian era distinguishes eras using the notations BC and AD. The two notation systems are numerically equivalent: "2020 CE" and "AD 2020" each describe the current year; "400 BCE" and "400 BC" are each the same year. The Gregorian calendar is used throughout the world today, and is an international standard for civil calendars.

AD 1 Calendar year

AD 1 (I), 1 AD or 1 CE is the epoch year for the Anno Domini calendar era. It was the first year of the Common Era (CE), of the 1st millennium and of the 1st century. It was a common year starting on Saturday or Sunday, a common year starting on Saturday by the proleptic Julian calendar, and a common year starting on Monday by the proleptic Gregorian calendar. In its time, year 1 was known as the Year of the Consulship of Caesar and Paullus, named after Roman consuls Gaius Caesar and Lucius Aemilius Paullus, and less frequently, as year 754 AUC within the Roman Empire. The denomination "AD 1" for this year has been in consistent use since the mid-medieval period when the anno Domini (AD) calendar era became the prevalent method in Europe for naming years. It was the beginning of the Christian/Common era. The preceding year is 1 BC; there is no year 0 in this numbering scheme. The Anno Domini dating system was devised in AD 525 by Dionysius Exiguus.

This article concerns the period between 9 BC and 1 BC, the last nine years of the before Christ era. It is one of the two "0-to-9" decade-like timespans that contain 9 years, and are not decades.

Year 525 (DXXV) was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Probus and Philoxenus. The denomination 525 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. In this year, the monk Dionysius Exiguus proposed a calendar starting with the birth of Jesus, so this was the first time the year was designated AD. However, the system was not used in general until the reign of Charlemagne in the 9th century.

The proleptic Julian calendar is produced by extending the Julian calendar backwards to dates preceding AD 8 when the quadrennial leap year stabilized. The leap years that were actually observed between the implementation of the Julian calendar in 45 BC and AD 8 were erratic: see the Julian calendar article for details.

An epoch, for the purposes of chronology and periodization, is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured.

Year 1 BC was a common year starting on Friday or Saturday of the Julian calendar and a leap year starting on Thursday of the Proleptic Julian calendar. It is also a leap year starting on Saturday, in the Proleptic Gregorian calendar. At the time, it was known as the Year of the Consulship of Lentulus and Piso. The denomination 1 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. The following year is 1 AD in the widely used Julian calendar, which does not have a "year zero".

Dionysius Exiguus Byzantine saint

Dionysius Exiguus was a 6th-century monk born in Scythia Minor. He was a member of a community of Scythian monks concentrated in Tomis, the major city of Scythia Minor. Dionysius is best known as the inventor of Anno Domini (AD) dating, which is used to number the years of both the Gregorian calendar and the (Christianised) Julian calendar. Almost all churches adopted his computus for the dates of Easter.

A calendar era is the period of time elapsed since one epoch of a calendar and, if it exists, before the next one. For example, the Gregorian calendar numbers its years in the Western Christian era.

Annianus of Alexandria was a monk who flourished in Alexandria during the bishopric of Theophilus of Alexandria around the beginning of the 5th century. He criticized the world history of his contemporary monk Panodorus of Alexandria for relying too much on secular sources rather than biblical sources for his dates.

Chronology of Jesus Timeline of the life of Jesus

A chronology of Jesus aims to establish a timeline for the events of the life of Jesus. Scholars have correlated Jewish and Greco-Roman documents and astronomical calendars with the New Testament accounts to estimate dates for the major events in Jesus's life.

The Ethiopian calendar is the principal calendar used in Ethiopia and also serves as the liturgical year for Christians in Ethiopia and Eritrea belonging to the Ethiopian Orthodox Tewahedo Church, Eritrean Orthodox Tewahedo Church, Eastern Catholic Churches, the Coptic Orthodox Church of Alexandria, and P'ent'ay Churches. The Ethiopian calendar is a solar calendar that has more in common with the coptic calendar, but like the Julian calendar, it adds a leap day every four years without exception, and begins the year on August 29 or August 30 in the Julian calendar. A gap of seven to eight years between the Ethiopian and Gregorian calendars results from an alternative calculation in determining the date of the Annunciation.

The Era of the Martyrs, also known as the Diocletian era, is a method of numbering years used by the Church of Alexandria beginning in the 4th century AD and by the Coptic Orthodox Church of Alexandria from the 5th century to the present. Western Christians were aware of it but did not use it. It was named for the Roman Emperor Diocletian who instigated the last major persecution against Christians in the Empire. Diocletian began his reign 20 November 284 during the Alexandrian year that began on 1 Thoth, the Egyptian New Year, or 29 August 284, so that date was used as the epoch: year one of the Diocletian era began on that date. This era was used to number the year in Easter tables produced by the Church of Alexandria.

Anno Mundi Calendar era

Anno Mundi, abbreviated as AM, or Year After Creation, is a calendar era based on the biblical accounts of the creation of the world and subsequent history. Two such calendar eras have seen notable use historically:

The term ante Christum natum, usually abbreviated to a. Chr. n., a.Ch.n., a.C.n., A.C.N., or ACN, denotes the years before the birth of Jesus Christ. It is a Latin equivalent to the English "BC". The phrase ante Christum natum is also seen shortened to ante Christum, similarly abbreviated to a. Chr., A. C. or AC. A related phrase, p. Chr. n., p. Ch. n., or post Christum natum complements a. Ch. n. and is equivalent to "Anno Domini" (AD).

The year zero does not exist in the Anno Domini (AD) system commonly used to number years in the Gregorian calendar and in its predecessor, the Julian calendar. In this system, the year 1 BC is followed by AD 1. However, there is a year zero in astronomical year numbering and in ISO 8601:2004, as well as in all Buddhist and Hindu calendars.

Byzantine calendar The calendar used by the Eastern Orthodox Church from c. 691 to 1728

The Byzantine calendar, also called "Creation Era of Constantinople" or "Era of the World", was the calendar used by the Eastern Orthodox Church from c. 691 to 1728 in the Ecumenical Patriarchate. It was also the official calendar of the Byzantine Empire from 988 to 1453 and of Kievan Rus' and Russia from c. 988 to 1700, as well as being used in other areas of the Byzantine commonwealth such as in Serbia. Since Byzantine is a historiographical term, the original name uses the adjective "Roman" as it was what the Eastern Roman Empire continued calling itself.

Dionysius Exiguus's Easter table was constructed in the year 525 by Dionysius Exiguus for the years 532–626. He obtained it from an Easter table attributed to Patriarch Cyril of Alexandria for the years 437–531. The latter was constructed around the year 440 by means of extrapolation from an Alexandrian Easter table constructed around the year 390 by Patriarch Theophilus of Alexandria. The great historical importance of Dionysius' Easter table is twofold:

  1. From this Easter table Bede's Easter cycle would ultimately be developed by means of which all future Julian calendar dates of Easter Sunday were determined ;
  2. With his Easter table Dionysius introduced in passing the Christian era which would be developed into a full system for dating historical events by Bede two centuries later.
Feast of the Annunciation

The Feast of the Annunciation, contemporarily the Solemnity of the Annunciation, also known as Lady Day, the Feast of the Incarnation, Conceptio Christi, commemorates the visit of the archangel Gabriel to the Virgin Mary, during which he informed her that she would be the mother of Jesus Christ, the Son of God. It is celebrated on 25 March each year. In the Roman Catholic Church, when 25 March falls during the Paschal Triduum, it is transferred forward to the first suitable day during Eastertide. In Eastern Orthodoxy and Eastern Catholicism, it is never transferred, even if it falls on Pascha (Easter). The concurrence of these two feasts is called Kyriopascha.

References

Citations

  1. "Anno Domini". Merriam Webster Online Dictionary. Merriam-Webster. 2003. Retrieved 4 October 2011. Etymology: Medieval Latin, in the year of the Lord
  2. "Online Etymology Dictionary" . Retrieved 4 October 2011.
  3. Blackburn & Holford-Strevens 2003 , p. 782 "since AD stands for anno Domini, 'in the year of (Our) Lord'"
  4. 1 2 Teresi, Dick (July 1997). "Zero". The Atlantic .
  5. 1 2 Blackburn & Holford-Strevens 2003, pp. 778–9.
  6. Eastman, Allan. "A Month of Sundays". Date and time. Archived from the original on 6 May 2010. Retrieved 4 May 2010.
  7. Chicago Manual of Style 2010, pp. 476–7; Goldstein 2007, p. 6.
  8. Chicago Manual of Style, 1993, p. 304.
  9. Donald P. Ryan, (2000), 15.
  10. Blackburn & Holford-Strevens 2003, p. 767.
  11. Nineteen year cycle of Dionysius Introduction and First Argumentum.
  12. Blackburn & Holford-Strevens 2003, p. 778.
  13. Teres, Gustav (October 1984). "Time computations and Dionysius Exiguus". Journal for the History of Astronomy. 15 (3): 177–188. Bibcode:1984JHA....15..177T. doi:10.1177/002182868401500302. S2CID   117094612.
  14. Tøndering, Claus, The Calendar FAQ: Counting years
  15. Mosshammer, Alden A (2009). The Easter Computus and the Origins of the Christian Era. Oxford. pp. 345–347. ISBN   9780191562365.
  16. Declercq, Georges, "Anno Domini. The Origins of the Christian Era" Turnhout, Belgium, 2000
  17. Wallraff, Martin: Julius Africanus und die Christliche Weltchronik. Walter de Gruyter, 2006
  18. Mosshammer, Alden A.: The Easter Computus and the Origins of the Christian Era. Oxford University Press, 2009, p. 254, p. 270, p. 328
  19. Declercq, Georges: Anno Domini. The Origins of the Christian Era. Turnhout Belgium. 2000
  20. Bede 731, Book 1, Chapter 2, first sentence.
  21. Blackburn & Holford-Strevens 2003, p. 881.
  22. 1 2 Patrick, 1908
  23. "General Chronology". New Advent Catholic Encyclopedia. Vol III. New York: Robert Appleton Company. 1908. Retrieved 25 October 2011.
  24. Steel, Duncan (2000). Marking time: the epic quest to invent the perfect calendar. p. 114. ISBN   978-0-471-29827-4 . Retrieved 1 June 2010.
  25. Hunt, Lynn Avery (2008). Measuring time, making history. p. 33. ISBN   978-963-9776-14-2 . Retrieved 1 June 2010.
  26. Petau, Denis (1758). search for "ante Christum" in a 1748 reprint of a 1633 abridgement entitled Rationarium temporum by Denis Petau . Retrieved 1 June 2010.
  27. C. R. Cheney, A Handbook of Dates, for students of British history, Cambridge University Press, 1945–2000, pp. 8–14.
  28. Dunn, James DG (2003). "Jesus Remembered" . Eerdmans Publishing: 324.Cite journal requires |journal= (help)
  29. Doggett 1992, p579: "Although scholars generally believe that Christ was born some years before AD 1, the historical evidence is too sketchy to allow a definitive dating".
  30. Paul L. Maier "The Date of the Nativity and Chronology of Jesus" in Chronos, kairos, Christos: nativity and chronological studies by Jerry Vardaman, Edwin M. Yamauchi 1989 ISBN   0-931464-50-1 pp. 113–129
  31. New Testament History by Richard L. Niswonger 1992 ISBN   0-310-31201-9 pp. 121–124
  32. Roger S. Bagnall and Klaas A. Worp, Chronological Systems of Byzantine Egypt , Leiden, Brill, 2004.
  33. Alfred von Gutschmid, Kleine Schriften, F. Ruehl, Leipzig, 1889, p. 433.
  34. Johannes Kepler (1615). Joannis Keppleri Eclogae chronicae: ex epistolis doctissimorum aliquot virorum & suis mutuis, quibus examinantur tempora nobilissima: 1. Herodis Herodiadumque, 2. baptismi & ministerii Christi annorum non plus 2 1/4, 3. passionis, mortis et resurrectionis Dn. N. Iesu Christi, anno aerae nostrae vulgaris 31. non, ut vulgo 33., 4. belli Iudaici, quo funerata fuit cum Ierosolymis & Templo Synagoga Iudaica, sublatumque Vetus Testamentum. Inter alia & commentarius in locum Epiphanii obscurissimum de cyclo veteri Iudaeorum (in Latin). Francofurti : Tampach. OCLC   62188677. anno aerae nostrae vulgaris
  35. Kepler, Johann; Vlacq, Adriaan (1635). Ephemerides of the Celestiall Motions, for the Yeers of the Vulgar Era 1633... Retrieved 18 May 2011.
  36. Sliter, Robert (1652). A celestiall glasse, or, Ephemeris for the year of the Christian era 1652 being the bissextile or leap-year: contayning the lunations, planetary motions, configurations & ecclipses for this present year ... : with many other things very delightfull and necessary for most sorts of men: calculated exactly and composed for ... Rochester. London: Printed for the Company of Stationers.
  37. The History of the Works of the Learned. 10. London: Printed for H. Rhodes. January 1708. p. 513. Retrieved 18 May 2011.
  38. "History of Judaism 63BCE–1086CE". BBC Team. BBC. 8 February 2005. Archived from the original on 13 May 2011. Retrieved 18 May 2011. Year 1: CE – What is nowadays called the 'Current Era' traditionally begins with the birth of a Jewish teacher called Jesus. His followers came to believe he was the promised Messiah and later split away from Judaism to found Christianity
  39. Raphall, Morris Jacob (1856). Post-Biblical History of The Jews. Moss & Brother. Retrieved 18 May 2011. CE BCE. The term common era does not appear in this book; the term Christian era [lowercase] does appear a number of times. Nowhere in the book is the abbreviation explained or expanded directly.
  40. Robinson, B.A. (20 April 2009). "Justification of the use of "CE" & "BCE" to identify dates. Trends". ReligiousTolerance.org.
  41. Safire, William (17 August 1997). "On Language: B.C./A.D. or B.C.E./C.E.?". The New York Times Magazine .
  42. Cunningham, Philip A., ed. (2004). Pondering the Passion : what's at stake for Christians and Jews?. Lanham, Md. [u.a.]: Rowman & Littlefield. p. 193. ISBN   978-0742532182.
  43. Doggett, 1992, p. 579

Sources