tvOS 18.0
By default, Apple TV sets your time zone automatically based on your location. You can manually adjust the time zone in Settings.
Go to Settings on Apple TV.
Go to General, navigate down to the Date & Time section, then select Set Automatically to turn off automatic time zone detection.
Select Time Zone, then enter a location in the text field that appears.
Select a location to use it as your time zone.
To switch back to the time zone of your current location, select Set Automatically to turn it back on.