Til all hours - Idioms by The Free Dictionary
till/until all hours (redirected from til all hours)
until all hours
Fig. until very late. Mary is out until all hours, night after night. If I'm up until all hours two nights in a row, I'm just exhausted.
till (or to) all hours till very late. informal
till/until ˈall hours until very late at night or early next morning: She sat up till all hours trying to finish her essay.