till all hours

till all hours (of the day and night)

Until a very late hour of the night or very early hour of the morning. Johnny keeps taking the car and staying out till all hours, and I just don't know what to do anymore! My boyfriend lives in another state, so to make up for the long distance, we stay up talking till all hours of the day and night.
See also: all, and, hour, till
Farlex Dictionary of Idioms.

till (or to) all hours

till very late. informal
See also: all, hour, till
Farlex Partner Idioms Dictionary

till/until ˈall hours

until very late at night or early next morning: She sat up till all hours trying to finish her essay.
See also: all, hour, till, until
Farlex Partner Idioms Dictionary
See also:
  • till all hours (of the day and night)
  • till/until all hours
  • until all hours
  • until all hours (of the day and night)
  • all hours
  • all hours (of the day and night)
  • on the hour
  • on the hour/half-hour
  • by the hour
  • the top of the hour
References in periodicals archive
They trawl the streets till all hours. The older generations tipped without thought.
Should you tip binmen?
One said: "The music is playing at all hours of the night." But a spokesman for Madge said: "Madonna does not stay up till all hours of the night.
the Razz: showbuzz
In fact, I'm starting to think that was what the SFA meant when they said football was going back to its roots - players out on the swally, having fun till all hours of the morning then sneaking back in.
CRAIG McGILL: Babes in the mood for fun
Yes, Freshers, you will get drunk and vomit in public places and stay up till all hours playing loud music and irritating the neighbours, but at the end of the day, do not forget that you are in the top two per cent of our population.
FRESHERS WEEK - HOW TO SURVIVE IT!; STUDENT FOCUS: Mel Taylor, the UWIC Student Union communications officer, offers her thoughts on surviving the hectic Freshers Week
Complaints include: Playing her gramophone till all hours of the night (mainly Jimmy Shand with a bit of Eminem thrown in).
Des Clarke: Gran from hell is a hit