ante diem xv kalendas sextilias

• Mercatus
• 477 B.C. — 300 members of the gens Fabia die in the battle of the Cremera
• 390 (or 387) B.C. — Gauls defeat the Romans at Allia
• 64 A.D. — the Great Fire of Rome begins
• 69 A.D. — Vitellius is given the titles of Augustus and pontifex maximus
• 1374 — death of Petrarch

ante diem xvi kalendas sextilias

• Mercatus
• rites in honour of Victory on the Capitoline
• ?? B.C. — dedication of a Temple to Honor and Virtue (and associated rites thereafter)
• 180 — some sort of persecution under Saturninus (details?)

ante diem xvii kalendas sextilias

• Mercatus — as is often the case in the Roman calendar, a lengthy festival is followed by an opportunity to restock the cupboards (or cash in on the tourist traffic?)
• 217 B.C. — birth of the philosopher Carneades (by one reckoning)

idus quinctilias

• Mercatus — gotta stock the cupboards!
• probatio/transvectio equitum Romanorum — the semi-annual parade of the horsey set

pridie idus quinctilias

• Mercatus — as often, a lengthy festival was followed by a few market days
• 218 A.D. — the emperor Elagabalus is coopted into all the priestly colleges