Definition: Two wine festivals were celebrated each year by the ancient Romans. One, April 23, according to the William Smith Dictionary, on Lacus Curtius, was the urban Roman wine festival, Vinalia urbana, at which occasion wine casks were first opened and tasted, with a libation poured to Jupiter. Not just Rome, but all of Latium celebrated the 2nd wine festival, the Vinalia rustica on August 19, when the flamen dialis offered lambs to Jupiter and then opened the vintage for drinking.

