Zenith clock radio manual ZG120M - Zenith Z166S Clock Radio

SOURCE: I have a Zenith ZG120M alarm clock radio. I can't set it.

Here is how I set my ZENITH ZG120M radio alarm clock.

1) PRESS AND HOLD DOWN the HOUR BUTTON and then PRESS the TIME BUTTON to set the correct hour.
2) PRESS AND HOLD DOWN the MINUTE BUTTON and then PRESS the TIME BUTTON to set the correct minute.
To Set The Wake Up Time
1) PRESS and HOLD DOWN the SNOOZE/ALARM SET BUTTON and then PRESS the HOUR BUTTON to set the desired hour.
2) Press and HOLD DOWN the SNOOZE/ALARM SET BUTTON and then PRESS the MINUTE BUTTON to set the desired minute.
There are two light indicators that light up on the left side of the LED display...the top light indicator will come
on once the time turns to PM. The bottom light indicates the alarm is set.

SOURCE: Zenith Redi_set clock radio Z230S

Describe your problem: Depress MONTH/DATE and ALARM1 for 3 seconds and display will show DST 'start' month,week,and date.
Display will show 4F 4.1, alternately flashing

4F = April First week. 4.1 = April 1.That is the old dates for change. What we want to do is to change to the new dates. Once it is done, it will change in the new dates as it did on the
old dates..

Hold down the MONTH/DATE button for 5 seconds, and while pressing the - or down button3 times, until the display shows '3'F2.
3 is month F2 is the week.
=March 2nd week.
You have successfully change the March changeover.

Now for the November change.
Depress and hold MONTH/DATE and ALARM2 after 3 second the display will show DST 'end' month,week, and date.
First digit will be 10 =month. second digit will be L=Last week, and date, will flash alternately.
While holding down the MONTH/DATE press the + or UP button once the display will show 11 (November) and F (first week) and 1 as date alternately flashing.
You have successfully set it for the next 100 years