ante diem x kalendas septembres

Vulcanalia -- a festival in honour of Vulcan, which included games in the Circus Maximus

rites in honour of Maia and the Nymphs

rites in honour of Ops Opifera and Hora Quirini

93 A.D. -- death of Gnaeus Julius Agricola, father-in-law of the historian Tacitus, and subject of the latter's biography

303 A.D. -- martyrdom of Asterius and companions