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  2. Common Era - Wikipedia

    en.wikipedia.org/wiki/Common_Era

    [30] [31] In 1835, in his book Living Oracles, Alexander Campbell, wrote: "The vulgar Era, or Anno Domini; the fourth year of Jesus Christ, the first of which was but eight days", [32] 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 ...

  3. 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.

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

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

    See calendar and list of calendars for other groupings of years. See history , history by period , and periodization for different organizations of historical events. For earlier time periods, see Timeline of the Big Bang , Geologic time scale , Timeline of evolution , and Logarithmic timeline .

  5. 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 ...

  6. List of archaeological periods - Wikipedia

    en.wikipedia.org/wiki/List_of_archaeological_periods

    4) Chalcolithic (c. 4000 – 2000 BCE). 5) Bronze Age (c. 3100 – 1100 BCE) see Indus Valley civilization. 6) Iron Age (c. 1100 - 500 BCE). i) Proto-history (c.1500 - 500 BCE) known as Vedic period. ii) Historical period after 500 BCE. East Asia East Asia Periods: Neolithic c. 7500 BCE Pengtoushan culture: North Asia North Asia Periods: Korea ...

  7. 4th century BC - Wikipedia

    en.wikipedia.org/wiki/4th_century_BC

    A Han dynasty Chinese crossbow from the 2nd century BCE. Oldest Brahmi script dates from this period. Brāhmī is the ancestor of Brahmic scripts, used in much of India and Southeast Asia. Romans build their first aqueduct. Chinese use the handheld trigger crossbow for the first time. The first crossbow, the gastraphetes, is invented at ...

  8. Astronomical year numbering - Wikipedia

    en.wikipedia.org/wiki/Astronomical_year_numbering

    The year 1 BC/BCE is numbered 0, the year 2 BC is numbered −1, and in general the year n BC/BCE is numbered "−(n − 1)" [1] (a negative number equal to 1 − n). The numbers of AD/CE years are not changed and are written with either no sign or a positive sign; thus in general n AD/CE is simply n or +n. [1]

  9. Wikipedia:WikiProject Detectable BC/BCE dates - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    All of this applies to spaces and BC/BCE labels in all of the patterns. Examples: 100 BC, 100 B.C, 100 BCE, 100 BC, etc. Year ranges If there is a range of years BC, convertors should recognise both numbers as years BC. The range may have different kinds of dashes in the middle. On either side of the dash there may be up to one space.