Press the XXX.GST (quick settings) button, then select [Settings] > [System] > [Date & Time]. Within this menu, you'll find the following options:
[Automatic date & time] – When enabled, the TV synchronizes its time to the incoming digital television signal. If connected to the internet, the clock will also be updated from here. When disabled, you can manually set the clock.
[Set date] – Displays information about the current date. If automatic time update is disabled, you can manually adjust the date.
[Set time] – Displays information about the current time. If automatic time update is disabled, you can manually adjust the time.
[Set time zone] – Lets you adjust the time offset for your time zone.
[Use 24-hour format] – Allows you to choose between a 12-hour and a 24-hour format for displaying the time.
•Ensure you have set correct date and time. Some apps will not work if you have incorrect date and/or time.