twenty-four hours a day

idiom

: all day and night
The store is open twenty-four hours a day.

Examples of twenty-four hours a day in a Sentence

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Data centers must operate twenty-four hours a day to be economically viable. Stephen Witt, New Yorker, 27 Oct. 2025 Both of us were together all the time, twenty-four hours a day. Angela Andaloro, PEOPLE, 25 Sep. 2025 Their Countdown To Christmas, filling their networks with festive films twenty-four hours a day is celebrating 15 years this season. Rebecca Angel Baer, Southern Living, 13 Dec. 2024 Classical music, which was thought to be calming for the wines and the workers, played twenty-four hours a day. Boris Fishman, The New Yorker, 25 Nov. 2024

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“Twenty-four hours a day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/twenty-four%20hours%20a%20day. Accessed 15 Nov. 2025.

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