Does timer 15071 automatically adjust for changing daylight length in addition to adjusting for daylight savings time?

Select "change time zone" and press to remove the "automatically adjust clock for daylight saving time" symbol to automatically update the clock when daylight saving time is applied.

1. Press the Windows key on your keyboard to display the taskbar if it isn't visible.The Windows key has the Windows logo on it.
2. Right-click the Date/Time display on the taskbar and then choose Adjust Date/Time from the shortcut menu.
   The Date and Time dialog box appears.
   
3. Click the Change Date and Time button.
   The Date and Time Settings dialog box appears.
4. Enter a new time in the Time field.
   You can also use the up and down arrows next to that field to change the time.
5. If you wish, click on a new date in the calendar display and then click OK.
   You can also change the time zone, if necessary.
6. Click the Change Time Zone button, choose another option from the Time Zone drop-down list, and click OK.
   If you don't want your computer to adjust for Daylight Saving Time, click Change Time Zone and click the Automatically Adjust Clock for Daylight Saving Time check box to turn this feature off.
7. Click the Change Date and Time button.
   The Date and Time Settings dialog box appears.
8. Enter a new time in the Time field.
   You can also use the up and down arrows next to that field to change the time.
9. If you wish, click on a new date in the calendar display and then click OK.
   You can also change the time zone, if necessary.
10. Click the Change Time Zone button, choose another option from the Time Zone drop-down list, and click OK.
    If you don't want your computer to adjust for Daylight Saving Time, click Change Time Zone and click the Automatically Adjust Clock for Daylight Saving Time check box to turn this feature off.

The DST is only based on GMT.

When daylight saving time (summer time) begins
The following models employ the Automatic Daylight Saving Time/Summer Time adjustment. The DST indicator in the display appears in the display at the beginning of the daylight saving time (summer time), and disappears at the end of it. Automatic DST/Summer Time adjustment is based on GMT (Greenwich Mean Time).
• Summer time begins at: 1:00 AM on the final Sunday of March.
• Standard time begins at: 2:00 AM on the final Sunday of October

To cancel the Automatic DST/ Summer Time adjustment and
to set DST display manually
The Automatic DST/Summer Time adjustment can be cancelled.
Press and hold DST for more than 3 seconds while the clock is displayed.
A beep sounds, and "Aut t OFF" appears in the display to show that the Automatic DST/Summer Time adjustment is cancelled. The display returns to the clock.
Notes
• The change timing of Automatic DST/Summer Time adjustment employed by the unit (see above) is subjected to variation by circumstances and the law in each country/region. In such a case, cancel the Automatic DST/Summer Time adjustment and
set DST display manually as necessary. The customer who lives in the country/region that has not introduced the daylight saving time (summer time) must cancel Automatic DST/Summer Time adjustment before using the set.
• To activate the Automatic DST/Summer Time adjustment again, press and hold DST for more than 3 seconds. A beep sounds, and "Aut t On" appears in the display to show that the Automatic DST/
Summer Time adjustment is activated. The display returns to the clock.
• To change the display to the daylight saving time (summer time) manually, see "To change the display to the daylight saving time (summer time) indication."

Sony ICF ICF C318 Operating Instructions Operating The Radio Setting The...

1
Plug in the unit.
First, the month and date appear, then the
year, and then the current Eastern Standard/
Daylight Time appears in the display.
2
Press
TIME ZONE
.
Area number "2" appears in the display.
If you live in the Eastern Time zone, you do
not need to adjust the area setting.
Area number
Time zone
1
Atlantic Standard/
Daylight Time
2
(default)
Eastern Standard/
Daylight Time
3
Central Standard/
Daylight Time
4
Mountain Standard/
Daylight Time
5
Pacific Standard/Daylight
Time
6
Yukon Standard/Daylight
Time
7
Hawaiian Standard/
Daylight Time
3
Press
TIME ZONE
repeatedly until the
desired number appears.
The display returns to the clock about 4
seconds after the operation is complete.
Note
During the shipment and your first use, a clock
error may occur. In this case, refer to "Setting the
clock and date" to set the correct time.
When daylight saving time
(summer time) begins
This unit employs Automatic Daylight Saving
Time/Summer Time adjustment. The DST
indicator appears in the display at the beginning
of the daylight saving time (summer time), and
disappears at the end of it.
?
Daylight saving time begins at: 2:00 AM on the
second Sunday of March.
?
Standard time begins at: 2:00 AM on the first
Sunday of November.
To cancel the automatic DST/summer
time adjustment and to set DST display
manually
The automatic DST/summer time adjustment can
be cancelled.
Press and hold
DST
for at least 3 seconds while
the clock is displayed.
A beep sounds, and "Aut
?
OFF" appears in the
display to show that the automatic DST/summer
time adjustment is cancelled. The display returns
to the clock.
Notes
?
Daylight Saving Time depends on the law in
each country/region, and your area may not use
it. In such a case, cancel the automatic DST/
summer time adjustment before using the set
and set the time manually as necessary.
?
To activate the automatic DST/summer time
adjustment again, press and hold
DST
for at
least 3 seconds. A beep sounds, and "Aut
?
On" appears in the display to show that the
automatic DST/summer time adjustment is
activated. The display returns to the clock.
?
To change the display to the daylight saving
time (summer time) manually, see "To change
the display to the daylight saving time (summer
time) indication."
Setting the clock and
date
To change the setting manually, follow the
procedure from step
1
.
1
Press
CLOCK
for at least 2 seconds.
You will hear a beep and the year will start to
flash in the display.
2
Press
+
or
-
until the correct year
appears in the display.
3
Press
CLOCK
.
4
Repeat steps
2
and
3
to set the month,
day and time.
After setting the time, two short beeps sound
and the clock starts from 0 seconds.
?
Pressing and holding
+
or
-
changes the year,
month or day rapidly.
When setting the current time, time changes
rapidly by 1 minute-increments up to 10
minutes, and then by 10 minute-increments.
?
While setting the clock, you must perform each
step within 65 seconds, or the clock setting
mode will be cancelled.
To display the year and date
Press
SNOOZE/DATE/SLEEP OFF
once for the
date, and within about 3 seconds press it again for
the year.
The display shows the date or year for about 3
seconds and then changes back to the current
time.
If you connect the AC plug to an AC outlet while
this unit is powered from the backup power
source, the current date and time appears in the
following order (the same as when the unit is
powered on after a power interruption).
"month and date" (about 1 second)
?
"year"
(about 1 second)
?
"current time"
To change the display to the daylight
saving time (summer time) indication
Change the daylight saving time (summer time)
adjustment setting according to the following
procedures if you have cancelled the automatic
DST/summer time adjustment.
Press
DST
.
The DST indicator appears in the display and the
time indication changes to the daylight saving
time (summer time).
To deactivate the daylight saving time (summer
time) adjustment, press
DST
again.

There is option in date and time settings. On the right side corner of your screen where date and time are displayed. Doubleclick to open

Click on Time Zone Tab and select your time zone and tick the option "Automatically adjust clock for daylight saving change"

Like the one in link

http://www.microsoft.com/library/media/1033/windowsxp/images/using/setup/tips/67446-select-automatically-adjust-clock.gif

Hope this helps

There was a sheet of paper that came with my clock explaining how to adjust the daylight savings time settings, but I lost it.  Anyone have theirs?  All i know is it requires that you press an awkward combination of buttons simultaneously, but that's it.

If DST is *already* set to "on" when you reset the time zone to Z-07 (Hawaii), my very recent experience is that the time *still gets adjusted back* by one hour.  Now that daylight savings time is over (at least according to the clock's pre-programmed and outdated schedule) I'm hoping that setting the time zone to Z-07 (Hawaii) will completely cancel the automatic time changes from now on.  Otherwise, I need to purchase another clock, and it won't be a Timex.

Same Problem

This is an intermittent issue with Microsoft Handheld PC 2000. There is no fix at this time. Please adjust the time manually if your MobilePro does not automatically adjust the time for Daylight Saving Time.