How do I set the time and date on the T6 Pro thermostat?
Press the Menu button, navigate to TIME using the arrow buttons, then press Select and adjust the hour and minutes. For the date, navigate to DATE in the menu and use the arrow buttons to set the year, month, and day, pressing Select after each to save. (Page 6)
From the official Honeywell Home T6 Pro Th6320u2008 manual, page 6
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