ante diem xv kalendas apriles
- Festival of Mars (Day 19)
- Quinquatrus (Day 1) — a festival celebrating Minerva’s birthday (maybe)
- rites in honour of Minerva (obviously connected to the above)
- 11 B.C.E. — Herod dedicates his renovated Temple in Jerusalem
- 303 A.D. — Martyrdom of Pancharius of Nicomedia
- 363 A.D. — fire destroys the Temple of Apollo on the Palatine
