pridie idus octobres
- rites in honour of the Penates Dei — the Penates Dei were originally the penates who watched over the storehouse of the king (when Rome had such, obviously); at some point, the Penates Dei came to be identified with Castor and Pollux, but they still had a temple under their own name on the Velian hill which was apparently restored by Augustus.
- 223 A.D. — martyrdom of Calixtus
