ad kalendas Graecas

Meaning

never at all; never in a month of Sundays.

Concepts

when pigs fly

Greek calends

Translations

alle calende greche

met sint-juttemis

aux calendes grecques

quan les vaques volin

am Sankt-Nimmerleins-Tag

του αγίου ποτέ

quand les poules auront des dents

à la Saint Glinglin

mai

quando gli asini voleranno

wanneer Pasen en Pinksteren op één dag vallen

no Dia de São Nunca

Quando a vaca tussa

quando os porcos voarem

Pronounced as (IPA)

[ˈad kaˈɫɛn.daːs ˈɡrae̯.kaːs]

Etymology

Attributed by Suetonius in Lives of the Twelve Caesars to Caesar Augustus. The kalends (also written calends) were specific days of the Roman calendar (the first of the month), not of the Greek, and so the “Greek Kalends” would never occur.