pridie nonas apriles
- 357 B.C. — Aristotle observes the transit of the moon past Mars (source?)
- ludi Megalesia (day 1 … associated with the next item, obviously)
- 204 B.C. — the image and cult of the Mater Magna (a.k.a. Cybele) is brought to Rome during the conflict with Hannibal on the advice of the Sybilline books
- 37 A.D. — the ashes of Tiberius are placed in the Mausoleum of Augustus
- 186 (or 188) A.D. — birth of the future emperor Septimius Bassianus (later known as M. Aurelius Antoninus Caesar; better known as Caracalla)
