all hours

Idioms  

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]

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Example Sentences

Yet here I am, stalking him on Instagram, up all hours flicking through interviews and career highlight clips.

From Los Angeles Times • Jul. 8, 2026

In May, the messaging app offered businesses in India the ability to use artificial intelligence for services including responding to customers at all hours or booking appointments.

From Barron's • Jun. 23, 2026

The probe follows other tension inside the office, where some staff objected to working all hours of the night to support colleagues across the Atlantic Ocean while earning less, the people said.

From The Wall Street Journal • May 5, 2026

Unpaid family and friends perform 75% to 80% of all hours of eldercare work in the U.S., according to research from the Urban Institute.

From MarketWatch • Apr. 14, 2026

He was required by Army regulations to show up for work at eight o’clock in the morning, but he usually drifted in around ten o’clock, and then worked until all hours of the night.

From "The Hot Zone" by Richard Preston