What month is Cetus?

Excuse me, but I'm a bit confused. Are you referring to Cetus as a specific month in the Gregorian calendar? As far as I'm aware, Cetus is actually the name of a constellation in astronomy, not a month. Could you perhaps be thinking of a different term or phrase? If there's a specific context or reason why you're asking about Cetus as a month, I'd be happy to help clarify or provide further information.