Casio 5208 User manual

Firstly, make sure it is in the Timekeeping Mode.
3.
NYC
Press (C) button once.
One of above display format.
City Code
2.
NYC
City code will be flashing
on the screen.
DST Setting Module : 5208
1.
In the Timekeeping Mode, hold
down (A) button for about two
seconds.
To return to the Timekeeping Mode,
press (C) button several times.
<Timekeeping Mode Screen>
-Date/Second
-Time/Second
-Day of week/Second
4.

6.
Press (A) button to exit the
setting screen.
ON
OFF
OFF ON
Press (D) button to toggle ON and OFF.
4.
OFF
DST setting (ON or OFF) will be
flashing on the screen.
5.