Firstly, make sure it is in the Timekeeping Mode.
Rotate the rotary switch to toggle
between "ON" and "OFF".
2.
Press Ⓒonce to display
the DST Setting Mode.
SET NYC
DST Setting / Module : 5398
<Timekeeping Mode Screen>
To return to the Timekeeping Mode,
hold down Ⓒfor two seconds.
In the Timekeeping Mode, hold
down Ⓐuntil the city code
appears on the upper display.
SET NYC City Code
OFF
ON or OFF