By default, automatic daylight-saving time is turned on. To use the manual daylight saving time setting:
Select Information.
The time and date settings of the unit are shown in the Time and date area.
Select Edit in the right top corner of the area:
The time and date settings will open in editing mode:
Turn the automatic daylight saving time on or off using the On/Off button on the right side of the Daylight saving time text.
When the value is On, the automatic daylight saving time is turned on.
When the value is Off, the manual daylight saving time is turned on.
Select OK: