ab urbe condita
Also known as Anno Urbis conditae, AUC, AVC, since the founding of Rome, years since the founding of Rome
year-numbering system
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"Ab urbe condita" is a Latin phrase meaning "from the founding of the city," referring to an ancient Roman system of numbering years based on the traditional date of Rome's founding in 753 BCE. This system was used by Roman historians like Livy to organize and date historical events, though it eventually gave way to other dating methods as the Roman Empire expanded and changed over time.
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Antoninianus of Pacatian, usurper of Roman emperor Philip in 248. It reads ROMAE AETER[NAE] AN[NO] MIL[LESIMO] ET PRIMO, 'To eternal Rome, in its one thousand and first year.' Anno ab urbe condita, rubricated and with a decorated initial, from the medieval Chronicle of Saint Pantaleon Ab urbe condita ( Latin: [ab ˈʊrbɛ ˈkɔndɪtaː]; 'from the founding of the City'), or anno urbis conditae (Latin: [ˈannoː ˈʊrbɪs ˈkɔndɪtae̯]; 'in the year since the city's founding'), abbreviated as AUC or AVC in Classical Latin inscriptions, expresses a date in years since 753 BC, the traditional founding of Rome. It is an expression used in antiquity and by classical historians to refer to a given year in Ancient Rome. In reference to the traditional year of the foundation of Rome, the year 1 BC would be written AUC 753, whereas AD 1 would be AUC 754. The foundation of the Roman Empire in 27 BC would be AUC 727. The current year AD 2026 would be AUC 2779.