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  2. 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.

  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. Calendar era - Wikipedia

    en.wikipedia.org/wiki/Calendar_era

    A calendar era is the period of time elapsed since one epoch of a calendar and, if it exists, before the next one. [1] For example, the current year is numbered 2025 in the Gregorian calendar, which numbers its years in the Western Christian era (the Coptic Orthodox and Ethiopian Orthodox churches have their own Christian eras).

  5. List of time periods - Wikipedia

    en.wikipedia.org/wiki/List_of_time_periods

    Early Iron Age (c. 1050 BC – 776 BC) – part of the Greek Dark Ages; Classical antiquity (776 BC – 476 AD) Archaic Greece (776 BC – 480 BC) – begins with the First Olympiad, traditionally dated 776 BC; Classical Greece (480 BC – 338 BC) Macedonian era (338 BC – 323 BC) Hellenistic Greece (323 BC – 146 BC) Late Roman Republic (147 ...

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

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

    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 4th millennium BC · 4000–3001 BC 40th century BC: 39th century BC: 38th century BC ...

  7. Wikipedia talk : Manual of Style/Dates and numbers/Archive 9

    en.wikipedia.org/wiki/Wikipedia_talk:Manual_of...

    This debate was moved here from Wikipedia:Village pump.. There's a debate over on Talk:Centuries about the use of BCE/CE in place of BC/AD. While not as well known among the general public (especially outside the USA), the "Common Era" nomenclature has basically become the international standard in academic circles.

  8. Timeline of computing hardware before 1950 - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_computing...

    A multiplying calculator more compact than the Arithmometer entered mass production. [42] [43] The design was the independent, and more or less simultaneous, invention of Frank S. Baldwin, of the United States, and Willgodt Theophil Odhner, a Swede living in Russia. Fluted drums were replaced by a "variable-toothed gear" design: a disk with ...

  9. Time series database - Wikipedia

    en.wikipedia.org/wiki/Time_series_database

    A time series database is a software system that is optimized for storing and serving time series through associated pairs of time(s) and value(s). [1] In some fields, time series may be called profiles, curves, traces or trends. [ 2 ]