Era comum | ver também
English: Common Era

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  1. Dois sistemas separados que também não utilizam títulos religiosos, o sistema astronômico e o padrão ISO 8601 utilizam um ano zero. O ano 1 BCE (idêntico ao ano 1 BC) é representado como 0 no sistema astronômico, e como ano 0000 no padrão ISO 8601. No entanto, atualmente o sistema de datas ISO 8601 exige o uso do calendário Gregoriano para todas as datas; por outro lado, o sistema astronômico e da Era comum permitem o uso do calendário Juliano para as datas anteriores a 1582 CE.


  1. Blackburn, Bonnie; Leofranc Holford-Strevens (2003). The Oxford companion to the Year: An exploration of calendar customs and time reckoning. Oxford: Oxford University Press. ISBN 0-19-214231-3. (reprinted & corrected, originally published 1999) p. 782
  2. American Anthropological Society (Janeiro, 2003). AAA Style Guide. Retirado em 15 de Abril de 2007.
  3. (1884) The Popular Encyclopedia, volume V, p. 307: "the common era of the Jews places the creation in BC 3760"
  4. Rev. Bourchier Wrey Savile, MA (1858). The first and second Advent: or, The past and the future with reference to the Jew, the Gentile, and the Church of God. London: Wertheim, Macintosh and Hunt. , p. 176: "Hence the present year, 1858, in the common era of the Jews, is AM 5618-5619, a difference of more than 200 years from our commonly-received chronology."
  5. Johannes von Gumpach (1856). Practical tables for the reduction of Mahometan dates to the Christian calendar. p. 2: "The common era of the Mahometans, as has already been stated, is that of the flight of Mahomet."
  6. Alexander Fraser Tytler, Lord Woodhouselee (1854). Universal History: From the Creation of the World to the Beginning of the Eighteenth Century. Boston: Fetridge and Company. , p. 284
  7. James Henthorn Todd (1864). St. Patrick, Apostle of Ireland, A Memoir of his Life and Mission. Dublin: Hodges, Smith & Co, Publishers to the University. , p. 497: "It should be observed, however, that these years correspond to 492 and 493, a portion of the annals of Ulster being counted from the Incarnation, and being, therefore, one year before the common era of the Nativity of our Lord."
  8. William Smith (1870). A smaller Scripture history. London: John Albemarle. , "common%20era%20of%20the"&pgis=1 p. 216, ""
  9. «What is Thelema?». Consultado em 18 Janeiro de 2010