when Hell freezes over in Italian — Translation

alle calende greche

adv

(idiom, slang, informal, hyperbolic) Never; not in this lifetime or a time in the unforeseeably distant future; not a chance.

mai

adv

(idiom, slang, informal, hyperbolic) Never; not in this lifetime or a time in the unforeseeably distant future; not a chance.

quando gli asini voleranno

adv

(idiom, slang, informal, hyperbolic) Never; not in this lifetime or a time in the unforeseeably distant future; not a chance.