Wine o’clock is a real thing. Last year, the Oxford online dictionary officially added the word and defined it as “the appropriate time of day to start drinking wine.” It didn’t mention an exact time because wine o’clock is a fluid moment, changing depending on a wine drinker’s circumstances, mood and probably proximity to a bottle they really want to open.

For wine professionals like me, wine o’clock can be any time of day, morning, noon or night. For the average wine drinker, though, it’s that time of day when responsibilities are taken care of enough for the corkscrew to come out. Enolytics, a new firm that leverages big data for wine industry sales and marketing insights, has mined the data and determined peak wine o’clock: just about 6:30 p.m.