September is the "magical" seventh month (after
Martius).

Ludi Romani are the circus games that are celebrated in honor of  Jupiter. It lasts until a.d. XIII Kalendas
Octobres.

Augustus was born in 63 BCE during the consulship of Cicero and Antonius. Through the political group the second triumvirate, he gained power and became the first emperor of Rome.

Eleusinian Mysteries are the celebrations of the cult of Demeter and Kore.  Being a member of the mysteries offers the guarantee of a better fate after death, but it also promises prosperity  in life, brought by Plutus.

Mercatus is a four day long fair that follows the Ludi Romani.