ante diem vi kalendas septembres

• Volturnalia — rites in honour of a divinity associated with fountains/waters
• 479 B.C. — Greek forces defeat Persian forces under Mardonius at Plataea (according to one reckoning)
• 413 B.C. — lunar eclipse which caused hesitation amongst  Athenian forces under Nikias in Sicily; the subsequent delay  ultimately led to their destruction