I got the clock from my daughter and have no manual. I keep setting the time, and it keeps changing to 2 hours earlier. I think I've pretty much figured out everything else, though this is NOT intuitive.

Follow these directions:
1) Wait for the clock to strike the next hour and count the hour. (no matter where the hands are located)
2) Stop your pendulum at this time. (Keep in mind, the clock is right, the hands are wrong)
3) Remove the hand nut in front of the minute hand by turning the nut about a 1/4 turn with a pair of needle nose pliers counterclockwise just enough to loosen, then remove by turning it by hand.
4) Remove the minute hand by pulling it straight out with no left to right movement to the hand.
5) Place the minute hand back pointing to the 12:00 hour that just struck on the chimes.
6) Re-install the nut by hand, hand tighten while holding the end of the minute hand keeping it from moving.
7) Firming hold the minute hand and tighten with pliers an additional 1/8 - 1/4 turn beyond hand tight.
8) Re-set the time and you are done

Thank you for very clear question, and timer identification.
1) I don't have repair for defective timer.
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#DT300
http://waterheatertimer.org/pdf/DT300-series-manual.pdf

2) Choose DT300 format
#3 says to press-and-hold CLOCK button until display shows 24H or 12H
Then release CLOCK button.
Next press HOUR button to select either 12H or 24H
This lets you choose am-pm format -or- choose military-time format where 11pm is 23

3) Set current time
Press-and-hold CLOCK button throughout whole current time setting.
Do not release CLOCK button until current time settings are finished.
Next, press HOUR button, and then MINUTE button, and then DAYS button until current hour, minute and day display.
Then release CLOCK button.
If this step does not work, then timer has gone bad.
Replace with locally available Utilitec 155671 from Lowes or Westek TE06WHB from Target
http://waterheatertimer.org/Woods-timers-and-manuals.html#59377

4) How to set DT300 timer program for full week of operation.
Each program requires you to set program 1 ON time and program 1 OFF time
Be careful to avoid program conflicts and overlaps so timer works as expected.

For program 1 ON time, you press PROGRAM button until 1 and ON display.
Release Program button.
Then select hour, minute and days. In this case you want all days of week, so you keep pressing DAYs button until whole week displays: Mo Tu We Th Fr Sa Su

Then you set program 1 OFF time, you press PROGRAM button again until 1 and OFF display.
Release Program button.
Then select hour, minute and days. In this case you want all days of week, so you keep pressing DAYs button until whole week displays: Mo Tu We Th Fr Sa Su

If you set ON time for all days of week, and OFF time for Tu Tuesday, then timer will not work correctly.

5) Read manual and add a comment for additional help

press

Hi there,

Just in case you didn't manage to set the time / date on your tocuh screen thermo clock, I'll try to help you from my experience (no available manual at the moment!).

1. To set the time, touch the clock icon on the upper left corner;
2. Keep touching the screen for longer than 5 seconds, on the hour area;
3. Touch the hour area until you get what you want (if you prefer the 24 hour display style, touch repeatedly until you get the right hour without the AM / PM indicator next to it);
4. Touch the clock icon again to start the clock;
5. Repeat steps 1 to 4 to set up the minutes (the hour area will be replaced by the minutes area);
6. To set the date, tocuh the calendar icon on the left hand side;
7. Keep touching the screen for longer than 5 seconds, on the year area;
8. Touch the year area until you get what you want;
9. Touch the month area until you get what you want;
10. Touch the day area until you get what you want;
11. The screen will reverse to the time display after 5 seconds if no touch.
12. The TEMP (temperature) area, if touched, is toggling between C and Fahrenheit degrees.

P.S. I don't know if it is possible to set an earlier time / date, except touching. I mean, if 2009 is on the screen and you want 2007, you'll keep touching up to 2030 and then from 1901 up to 2007.

Hope it helped.

There are three buttons, let's call them 1, 2, and 3, from left to right.


Clock
Time setting

A. 12 AM, PM or 24.00 h
With the clock in the time readout mode, keep
button (2) depressed for 4 seconds -12 AM, PM
or 24.00 flashing. After pushing button (1), either
a 12-hour (AM + PM) or a 24-hour setting
program can be selected. If you only want to
change the display mode, push button (3). The
clock then returns to its normal timekeeping
function.

B. Hours
Push button (2) a second time - hour display
flashes. Set hour by pushing button (1). After
pushing button (3)*, the clock returns to the time
readout mode with new hour setting.

C. Minutes
Push button (2) once more - minute display
flashes. Set minute by pushing button (1). Upon
pushing button (3)*, the clock is started -
accurate to within 1 second.

Stop watch function
The stop watch can only be set in motion if the
clock is in its normal timekeeping mode and not
during setting operations.
A. Push button (3) - 00:00 display appears;
B. Push button (1) - stop watch is on;
C. Push button (1) a second time - watch stops.
(Additional times can be added by pushing button
(1) again - stop watch keeps running. Push button
(1) once more to stop timing.)
D. Push button (2) - 00:00 display appears;
E. Push button (3) - normal timekeeping mode.

If button (3) is pushed during operation A and
B, the setting procedure must be restarted
(push button (2)).

Turn off radio and hold mode button to see if you can set clock that way. I know you have to do that on some older radios like pioneer and sony. If you give me the Xtreme web site you have I will try to help you more.


Good Luck

Check on the general set up/ clock, what zone is set and put east, mis or west deppending where are you located, turn on the automatic clock or select a news channel where the decices will check the update time.

Keep pushing the set button until dst shows on the date window then see the clock window it will read on or off press the + button for on or off.

See http://www.lacrossetechnology.com/3143a/manual.pdf Press the unmarked button for 1 second. That turns DST on and off.

If you hold the D button in for 3 seconds then a menu appears. Press the button until the clock setting comes up. Now you use the dial button to set the time. Turn one direction to set the minute and turn the dial in the other direction to set the hour. Hope this helps!