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  2. Anniversary - Wikipedia

    en.wikipedia.org/wiki/Anniversary

    An anniversary is the date on which an event took place or an institution was founded in a previous year, ... expressed with Latin words or Roman numerals.

  3. Ab urbe condita - Wikipedia

    en.wikipedia.org/wiki/Ab_urbe_condita

    Approximate birth date of Jesus, approximated by Dionysius Exiguus in AD 525 (AUC 1278) 1000: AD 247: 1,000th Anniversary of the City of Rome 1037: AD 284: Diocletian became Roman emperor, starting the Dominate: 1229: AD 476: Fall of the Western Roman Empire to the armies of Odoacer: 1246: AD 493: Establishment of the Ostrogothic Kingdom: 1306 ...

  4. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    Mixed Roman and Arabic numerals are sometimes used in numeric representations of dates (especially in formal letters and official documents, but also on tombstones). The month is written in Roman numerals, while the day is in Arabic numerals: "4.

  5. Wikipedia:Manual of Style/Dates and numbers - Wikipedia

    en.wikipedia.org/.../Dates_and_numbers

    Dates for Roman history before 45 BC are given in the Roman calendar, which was neither Julian nor Gregorian. When (rarely) the Julian equivalent is certain, it may be included. For dates in early Egyptian and Mesopotamian history, Julian or Gregorian equivalents are often uncertain.

  6. History of ancient numeral systems - Wikipedia

    en.wikipedia.org/wiki/History_of_ancient_numeral...

    The Roman numerals developed from Etruscan symbols around the middle of the 1st millennium BCE. [34] In the Etruscan system, the symbol 1 was a single vertical mark ...

  7. List of date formats by country - Wikipedia

    en.wikipedia.org/wiki/List_of_date_formats_by...

    All examples use example date 2021-03-31 / 2021 March 31 / 31 March 2021 / March 31, 2021 – except where a single-digit day is illustrated. Basic components of a calendar date for the most common calendar systems: D – day; M – month; Y – year; Specific formats for the basic components: yy – two-digit year, e.g. 24; yyyy – four-digit ...

  8. Timeline of numerals and arithmetic - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_numerals_and...

    12th century — Indian numerals have been modified by Persian mathematicians al-Khwārizmī to form the modern Arabic numerals (used universally in the modern world.) 12th century — the Arabic numerals reach Europe through the Arabs. 1202 — Leonardo Fibonacci demonstrates the utility of Hindu–Arabic numeral system in his Book of the Abacus.

  9. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    The Latin numerals are the words used to denote numbers within the Latin language. They are essentially based on their Proto-Indo-European ancestors, and the Latin cardinal numbers are largely sustained in the Romance languages. In Antiquity and during the Middle Ages they were usually represented by Roman numerals in writing.