Firstly, make sure it is in the Timekeeping Mode.
DST Setting Module : 3495
Day of week
Date
<Timekeeping Mode Screen>
Current DST setting will appear.
Current Time
To return to the Timekeeping Mode,
hold down Ⓒfor two seconds.
Press Ⓒonce to display the
DST setting mode.
Home City
In the Timekeeping Mode,
hold down Ⓐfor two seconds
until the home city appears.