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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. List of time periods - Wikipedia

    en.wikipedia.org/wiki/List_of_time_periods

    This is a list of such named time periods as defined in various fields of study. ... (c. 10,000 BC) and continues to the present.

  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. Common Era - Wikipedia

    en.wikipedia.org/wiki/Common_Era

    In Estonian, "e.m.a." (enne meie ajaarvamist, before our time reckoning) and "m.a.j." (meie ajaarvamise järgi, according to our time reckoning) are used as BCE and CE, respectively. Also in use are terms "eKr" (enne Kristust, before Christ) and "pKr" (pärast Kristust, after Christ). In all cases, the abbreviation is written after the year number.

  6. Time in Canada - Wikipedia

    en.wikipedia.org/wiki/Time_in_Canada

    Atlin, an unincorporated community, is in a state of time flux, with many residents and the cell tower applying Mountain Standard Time year round, but RCMP and BC Services following Pacific Time [22] British Columbia, southeastern

  7. Year zero - Wikipedia

    en.wikipedia.org/wiki/Year_zero

    However, there is a year zero in both the astronomical year numbering system (where it coincides with the Julian year 1 BC), and the ISO 8601:2004 system, a data interchange standard for certain time and calendar information (where year zero coincides with the Gregorian year 1 BC; see conversion table).

  8. Before Present - Wikipedia

    en.wikipedia.org/wiki/Before_Present

    4714 BC: 6663 BP Epoch of the Julian day system: Julian day 0 starts at Greenwich noon on January 1, 4713 BC of the proleptic Julian calendar, which is November 24, 4714 BC in the proleptic Gregorian calendar [21]: 10 2251 BC: 4200 BP Beginning of the Meghalayan age, the current and latest of the three stages in the Holocene era. [22] [23] 45 ...

  9. 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.