About time is said when something overdue finally happens. About time too, and not before time.
It welcomes and complains in the same breath, which is why it is so satisfying to say. The fuller form adds too on the end.
1phraseabout timeSaid when something overdue finally happens.
“They resurfaced the lane at last, which is about time.”
about time is a phrase.
Practised in Small Talk & Everyday Phrases