The hours and closure dates are listed at this link: https://www.ChurchOfJesusChrist.org/temples/details/salt-lake-temple?lang=eng The current hours for the Temple Square North Visitors' Center are 9am - 9pm daily.
We were there for 2 days during the day .... I do not know exact opening hours, sorry ... but Google certainly knows that 🤔🤔
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