Ab urbe condita (AUC) was Latin for "From the Foundation of the City". It was the basis of the Roman calendar.
The traditional date of the foundation of Rome was 1 AUC (753 BC). The Battle of Actium took place in 723 AUC (31 BC). (PROSE: State of Change)
Parallel universes
In Roma I, eleven Golden Emperors ruled in the 10th and 11th century AUC (1st and 2nd century BC). (PROSE: Warlords of Utopia)
In the parallel universe Terra Nova, the calendar was changed in 725 AUC (29 BC) to Dominion Year One. (PROSE: State of Change)