twenty-four hours a day

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Definition of twenty-four hours a day

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

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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 18 Jan. 2021.

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