Ab urbe condita

AB VRBE CONDITA (Latin: [ab ˈʊrbɛ ˈkɔndɪtaː] 'from the founding of the City'), or ANNO VRBIS CONDITAE (Latin: [ˈan.no̯‿ʊrbɪs ˈkɔndɪtae̯]; 'in the year since the City's founding'), abbreviated as AUC or AVC, expresses a date in years since 753 BC. 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 1 AD would be AUC 754. The foundation of the Roman Empire in 27 BC would be AUC 727.

Ab urbe condita

AB VRBE CONDITA (Latin: [ab ˈʊrbɛ ˈkɔndɪtaː] 'from the founding of the City'), or ANNO VRBIS CONDITAE (Latin: [ˈan.no̯‿ʊrbɪs ˈkɔndɪtae̯]; 'in the year since the City's founding'), abbreviated as AUC or AVC, expresses a date in years since 753 BC. 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 1 AD would be AUC 754. The foundation of the Roman Empire in 27 BC would be AUC 727.