Daylight savings time

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.

GE 15071 sold at Home Depot and on-line has feature that adjusts for daylight savings time.
GE 15086 does not offer automatic adjustment for DST
http://waterheatertimer.org/GE-timers-and-manuals.html#15071

Daylight savings time (DST) is not same as dawn-to-dusk astronomical timer.
GE 15071 and 15086 single-pole timers do not have dawn to dusk astronomical feature.

For single-pole dusk-dawn astronomical with DST, Lowes sells Utilitec-0192773
http://waterheatertimer.org/Program-wire-Utilitec-0192773.html

For 3-way switching, 7-day DST -or- dawn-dusk astronomical:
http://waterheatertimer.org/Aube-timers.html

You posted this in January, which is not during daylight savings time. The SMT setting doesn't turn on automatic DST switching for a particular timezone; rather, it is a manual override to adjust timezones to DST when it is actually active. There is no automatic DST adjustment for this watch (according to their FAQ). Turn SMT to OF for all timezones during winter months, and ON for applicable timezones during SuMmer Time (SMT).

I read another response and found the FN Key and they held down the F10 (Set) Key to use the up and down arrows to adjust the date and time on my keyboard.

Thanks for your help!

Sorry it took so long to give you a answer to your problem. I hope this information help you with your problem. Thank you for using FixYa and have a nice day! Dear Emerson SmartSet® Clock/Clock Radio Owner: Your Emerson SmartSet® Clock or Clock Radio includes Emerson?s patentedAuto Time Setting System that automatically sets the clock to the correct year, month, date, day and time, the first time that you plug it in, and after every power interruption. It also includes a built-in long life lithium battery that can maintain the time and alarm settings for up to 5 years, or even longer. As an added benefit we have programmed the internal SmartSet® computer to automatically adjust for Standard/ Daylight Saving Time changes through the year 2097. TheDaylight Saving Time information programmed into all SmartSet® models was based on the United States Uniform TimeAct of 1966, which formalized theDaylight Saving Time period that we observe today. CurrentlyDaylight Saving Time begins on the first Sunday in April and ends on the last Sunday in October. The new Energy Bill that was signed into law by President Bush in August 2005 includes a provision to extend Daylight Saving Time. Beginning in 2007 Daylight Saving Time will begin on the second Sunday in March and end on the first Sunday in November. Of course this is a situation that is beyond the control of Emerson, or any other company that produces devices with an automaticDaylight Saving Time adjustment feature. For example most computers, PDA?s, and many other devices also have automatic DST adjustments. Manufacturers of these devices must now begin to make adjustments to the automatic DST software to agree with the new DST timing for 2007. Beginning in 2007 the current automatic DST default settings in this device would no longer be correct. It would then be necessary for you to manually adjust the TIME ZONE setting 4 times each year as follows: 1.) On the second Sunday in March you would have to set your clock to the next lower number time zone. For example if you lived in the Eastern Time zone (Zone 02) you would then change your clock to Zone 1 to move it ahead by one hour. 2.) On the first Sunday in April, this clock will automatically advance by one hour. You must then set the clock back to your correct time zone. For example if you lived in the Eastern Time zone you would set your clock back to Zone 02. 3.) On the last Sunday in October you would again set your clock to the next lower numbered time zone. 4.) On the first Sunday in November you would again set your clock back to your correct time zone. Instructions for changing the Time Zone setting are found in the Owner?s Manual. We apologize for any inconvenience this may cause due to circumstances that are beyond our control.

Directions for Resetting the Daylight Savings Time (DST) Start & End Dates on the Emerson Research Smartset Dual Alarm Clock Radio (cks5055s):

• This should work for all Smartsets, but I cannot make the guarantee (and no, I don't have any other directions, sorry)!
• Adjusting the DST Start Date on an Emerson Research Smartset:
  1. Depress & hold the MONTH/DATE and the ALARM1 buttons (at the same time). After 3 seconds the display will show the DST 'start' month, week, and date. It should be alternately showing "4 F" (April and first week week) and "4. 1".
  2. While still holding the MONT/DATE and the ALARM1 buttons, press the DOWN (or "-") button 3 times, until the display is showing "3" (March) and the week as "F2". It should alternately flash "3 F2" and "3. 11".
  3. After this is set, the clock should "automatically" reset itself
• Adjusting the DST End Date on an Emerson Research Smartset:
  1. Depress & hold the MONTH/DATE and the ALARM2 buttons (at the same time). After 3 seconds the display will show the DST 'end' month, week, and date. It should be alternately showing "10 L" (October and last week week) and "10. 28".
  2. While still holding the MONT/DATE and the ALARM1 buttons, press the UP (or "+") button 1 time, until the display is showing "11" (November) and the week as "F". It should alternately flash "11 F" and "11. 4".
  3. After this is set, the clock should "automatically" reset itself

One thing to note, if you ever have to change the lithium backup battery for the Smartset clocks, it will revert back to it's factory defaults and you'll have to go through his all over again.

Hello everyone,
I finally found a manual that I hope that it will help you as much as it helped me. It took long enough. Here goes; try this site:
http://www.emersonradio.com/owners/SmartSet%20Series/

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.