for days
Da giorni volevo chiamarti, spero che mi capirai.
I've been wanting to call you for days, I hope you'll understand.
— Volver - Tornare (2006)
Pensava di avere ancora tempo ma la scadenza era già passata da giorni.
He thought he still had time, but the deadline had already passed days ago.
He hasn't been seen for days.
— La caduta - Gli ultimi giorni di Hitler (2004)
I haven't seen her for days.