ante diem xvi kalendas apriles

• Festival of Mars continues (day 17)
• Liberalia — a festival of general merriment and wine drinking in honour of Liber Pater (another name for Bacchus)
• Agonalia — the rex sacrificulus would offer a ram to various deities
• 45 B.C. — Julius Caesar defeats Pompey’s sons and Labienus at Munda
• 136 A.D. — the future emperor Marcus Aurelius dons the toga virilis
• 180 A.D. — death of Marcus Aurelius at Bononia
• 461 A.D. — death of Saint Patrick (traditional)