Italian Phrase
Quando è successo?
Meaning
Literally “When is it happened?”, this question asks for the exact moment a past event took place. It is neutral in register and works in both casual conversation and more formal settings.
When to use
Use this phrase whenever you need to know the timing of something that already occurred – a news story, a personal anecdote, a mistake, or any event you’re discussing in the past.
✦Grammar Breakdown
Quandoèsuccesso?
Quando
Interrogative adverb meaning “when”, used to ask about the time of an event.
è (essere)
Third‑person singular of the verb *essere*; in the passato prossimo it works as the auxiliary for verbs that take *essere*.
successo
Past participle of *succedere* (to happen). With *essere* it stays in the masculine singular form because the verb is impersonal.
Passato prossimo with *essere*
Verbs of movement, change, or occurrence use *essere* as the auxiliary; the participle must agree with the subject’s gender and number.
🗨In Conversation
Quando è successo?
When did it happen?
È successo ieri sera, verso le otto.
It happened last night, around eight.
✕Common Mistakes
Quando è succeduto?
The past participle of *succedere* is *successo*; *succeduto* is the participle of *succedere* used with *avere*, which is incorrect.
Quando ha successo?
*Succedere* never uses *avere* as its auxiliary; the correct form is *è successo*.
↔Alternatives
Quando è avvenuto?
When did it occur?
Che giorno è stato?
What day was it?
In che data è successo?
On what date did it happen?
Cultural Tip
In Italian the verb *succedere* is preferred for neutral, factual events (e.g., news, accidents). For more emotional or dramatic incidents speakers often choose *accadere* or *avvenire*. Remember that *succedere* always takes *essere* as its auxiliary, so you’ll never hear *ha successo* in standard Italian. In some Southern dialects you might hear *quanno è succeduto*, but the standard form is *quando è successo*.