all hours

1. Irregular times, as in You can't come home at all hours and expect your supper to be ready. The expression can also mean “late at night,” as in College students like to stay up talking until all hours. It is sometimes amplified into all hours of the day and night. [c. 1930]

Example Sentences

Receivers in hand, they’re reaching out--at all hours of the day and night, from nearly every continent on the globe--to make contact with this forlorn desert outpost.

From Los Angeles Times

The union also criticized the airline’s refusal to fully compensate flight attendants for all hours worked.

From Salon

The white microbuses darting around the roads at all hours are one of the first things you notice when you arrive in Cairo, packed with travellers hopping on and hopping off.

From BBC

His mother, Blanche, worked all hours - struggling to keep the family in clothes and food.

From BBC

Californians clog their freeways up and down the state at nearly all hours.

From Los Angeles Times