ante diem xii kalendas junias

Agonalia -- the rex sacrificulus would offer a ram to various deities

rites in honour of Vediovis

429 B.C. -- birth of Plato (by one reckoning)

70 A.D. -- Roman forces break through Jerusalem's middle wall

194 A.D.(?) -- Septimius Severus acclaimed as Imperator

293 A.D. (?) -- elevation of Galerius to the rank of Caesar by Diocletian

1920 -- birth of John Chadwick (The Decipherment of Linear B)

1929 -- death of Rodolfo Lanciani (perhaps May 22)

1953 -- birth of Don Fowler