ante diem vi kalendas quinctilias

ludi Taurei quinquennales (day 2) -- horse races held every five years to appease the divinities of the underworld

23 B.C. (and several years after) -- the emperor Augustus is given tribunicia potestas

4 A.D. -- the emperor Augustus adopts Tiberius (son of his wife Livia) and Agrippa Postumus (son of Augustus' daughter Julia and Marcus Vipsanius Agrippa)

221 A.D. -- the emperor Elagabalus adopts the future emperor Severus Alexander and gives him the rank of Caesar (?)

363 A.D. -- death of the emperor Julian