Ancient Greek Alternative forms Νωναί (Nōnaí) Etymology From Latin nones (“nones; 8th ['9th'] day before the ides of a month”). Noun νωναί • (nōnaí) f (historical) The nones, used in reckoning Roman dates: the 7th day of March, May, Quintilis or July, and October and the 5th day of all other months. References Solin, Heikki, "Observations sur la Forme Grecque des Indications Calendaires Romaines à Rome à l'Époque Impériale" in Bilinguisme Gréco-Latin et Épigraphie (2008), Lyon: Maison de l'Orient Méditerranéen, pp. 259–272. Wikiwand - on Seamless Wikipedia browsing. On steroids.