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  2. Anno Domini - Wikipedia

    en.wikipedia.org/wiki/Anno_Domini

    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. [c] 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 ...

  3. Common Era - Wikipedia

    en.wikipedia.org/wiki/Common_Era

    As of October 2019, the BBC News style guide has entries for AD and BC, but not for CE or BCE. [57] 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". [58]

  4. Timeline of ancient history - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_ancient_history

    The date used as the end of the ancient era is arbitrary. The transition period from Classical Antiquity to the Early Middle Ages is known as Late Antiquity.Late Antiquity is a periodization used by historians to describe the transitional centuries from Classical Antiquity to the Middle Ages, in both mainland Europe and the Mediterranean world: generally from the end of the Roman Empire's ...

  5. 1st century BC - Wikipedia

    en.wikipedia.org/wiki/1st_century_BC

    The 1st century BC, also known as the last century BC and the last century BCE, started on the first day of 100 BC and ended on the last day of 1 BC. The AD/BC notation does not use a year zero; however, astronomical year numbering does use a zero, as well as a minus sign, so "2 BC" is equal to "year –1". 1st century AD (Anno Domini) follows.

  6. Dionysius Exiguus - Wikipedia

    en.wikipedia.org/wiki/Dionysius_Exiguus

    Consequently, one year since the Incarnation would have meant 25 March AD 1, meaning that Dionysius placed the Incarnation on 25 March 1 BC. Because the birth of Jesus was nine calendar months later, Dionysius implied, but never stated, that Jesus was born 25 December 1 BC.

  7. Calendar era - Wikipedia

    en.wikipedia.org/wiki/Calendar_era

    The Seleucid era was used in much of the Middle East from the 4th century BC to the 6th century AD, and continued until the 10th century AD among Oriental Christians. The era is computed from the epoch 312 BC: in August of that year Seleucus I Nicator captured Babylon and began his reign over the Asian portions of Alexander the Great 's empire.

  8. Timeline of North American prehistory - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_North_American...

    100 BC–500 AD: The Hopewell tradition begins flourishing in much of the East, with copper mining centered in the Great Lakes region. 1 BC: Some central and eastern prairie peoples learned to raise crops and shape pottery from the mound builders to their east. 500 BC–700 AD: Old Bering Sea culture thrives in the western Arctic

  9. List of decades, centuries, and millennia - Wikipedia

    en.wikipedia.org/wiki/List_of_decades,_centuries...

    13th millennium BC · 13,000–12,001 BC 12th millennium BC · 12,000–11,001 BC 11th millennium BC · 11,000–10,001 BC 10th millennium BC · 10,000–9001 BC 9th millennium BC · 9000–8001 BC 8th millennium BC · 8000–7001 BC 7th millennium BC · 7000–6001 BC 6th millennium BC · 6000–5001 BC 5th millennium BC · 5000–4001 BC