Adjusting the clock time - Kenwood KDC-MP235 CD Player

See if this works for your item. It was posted in 2009:
Setting the Clock
1) Press and hold in the BAND button [4] then press the DISP button [9] to toggle the display to the clock mode.

2) Press and hold in the BAND button [4] then press and hold in the DISP button [9] for at least 2 seconds.

3) Select left or right to adjust the time using the a-selector

~Adjusting minutes
Each time you select right >> using the a-selector [3], the minutes increment up by one digit (0 to 59).

~Adjusting hours
Each time you select left << using the a-selector [3], the hours increment up by one digit (1 to 12).
*The clock only displays time in a 12-hour format.
There is no way to toggle the clock to a 24-hour format.

4) Press the BAND button [4] to set the clock into memory. This also resets the seconds counter to zero.

Note:
*The clock can only be set by turning power on to the unit and switching to the clock display mode. You cannot set the clock when it is displayed with only the igntion on. If you drain or remove the car's battery, the clock must be reset. While setting the clock, if another button or operation is selected, the clock set mode is canceled.

adjusting the pendulum only works if it is part of the clock mechanism
with electric clocks you adjust the time by an adjuster on the back

You can speed up or slow down the clock by adjusting the length of the pendulum. This link will walk you through the process.

http://usedclockparts.com/9-clock-case-repairs/31-how-to-speed-up-or-slow-down-your-clock-using-it-s-pendulum

You can speed up or slow down the clock by adjusting the length of the pendulum. This link will walk you through the process.

http://usedclockparts.com/9-clock-case-repairs/31-how-to-speed-up-or-slow-down-your-clock-using-it-s-pendulum

Setting the Clock
1) Press and hold in the BAND button [4] then press the DISP button [9] to toggle the display to the clock mode.

2) Press and hold in the BAND button [4] then press and hold in the DISP button [9] for at least 2 seconds.

3) Select left or right to adjust the time using the a-selector

~Adjusting minutes
Each time you select right >> using the a-selector [3], the minutes increment up by one digit (0 to 59).

~Adjusting hours
Each time you select left << using the a-selector [3], the hours increment up by one digit (1 to 12).
*The clock only displays time in a 12-hour format.
There is no way to toggle the clock to a 24-hour format.

4) Press the BAND button [4] to set the clock into memory. This also resets the seconds counter to zero.

Note:
*The clock can only be set by turning power on to the unit and switching to the clock display mode. You cannot set the clock when it is displayed with only the igntion on. If you drain or remove the car's battery, the clock must be reset. While setting the clock, if another button or operation is selected, the clock set mode is canceled.

On most clock radios, there is a Time button. Usually, just hold it down while adjusting the Hr. or Min. I have not seen too many clock radios that do not use that kind of setup.

Adjusting initial settings
1 Press SRC/OFF and hold until the unit
turns off.
2 Press MULTI-CONTROL and hold until
CLOCK SET appears in the display.
3 Turn MULTI-CONTROL to select one of
the initial settings.
CLOCK SET (clock)—AUX (auxiliary input)
# To return to the previous display, press
DISP/BACK/SCRL.
# To return to the main menu, press and hold
DISP/BACK/SCRL.
# To cancel initial settings, press BAND/ESC.
Setting the clock
Use these instructions to set the clock.
1 Use MULTI-CONTROL to select
CLOCK SET in the initial setting menu.
Refer to Adjusting initial settings on this page.
2 Press MULTI-CONTROL to display the
setting mode.
3 Press MULTI-CONTROL to select the segment
of the clock display you wish to set.
Each time you press MULTI-CONTROL, one
segment of the clock display is selected.
Hour—Minute
As you select segments of the clock display,
the selected segment blinks.
4 Turn MULTI-CONTROL to put a clock
right.

It has to be set to do that. Daylight savings time is not universal, even in the U.S.

I have a sharp atomic clock that once set for the exact time, after a day loses 3 hours.