raz na ruski rokPolishPronunciationraz na ruski rokLiteral Translation once in a Russian yearEquivalentsThis is how you express this idiom across languages and locales.ListMapChinese千載難逢not occurring once in a thousand yearsEnglishOnce in a blue moonFrenchtous les trente-six du moisevery thirty-six of the monthItalianOgni morte di PapaOnce every Pope’s deathSpanishcada muerte de obispoeach death of a bishopLogin to correlate with other idioms