ante diem xiii kalendas apriles
- Festival of Mars (day 20)
- Quinquatrus (day 2) — second day of a five-day festival (although the name originally came from the fact that it came five days after the Ides, apparently) sacred to Mars but also somehow connected to Minerva; it was also apparently a ‘school holiday’, so no doubt we’ll soon be reading about how the Romans invented Spring Break [I've written that for three or four years now; no one's taken the bait!]
- 43 B.C. — Birth of Ovid (by one reckoning)
- 268 A.D. — assassination of Gallienus