My over the air channel list program times are 1 hour behind.

Press the menu key on the remote. Find setup in the list that appears on the screen. Within setup, there is likely a time and date function. If not, you might call your cable service provider who just might walk you through the procedure. Does your cable box show the correct time (if you have such)? You may have some daylight savings time setting in effect.

Turn off the daylight savings.

Use your remote...
1) Hit "Menu", use the buttons to select "Time," then press "Enter" 2) Select "Clock," then hit "Enter" 3) Select "Manual"
If your clock is exactly 1 hour behind
4) Go to "Daylight Savings" and select "On" 5) Hit "Back" to go to the previous menu 6) Select "Exit"

Try AUTO.
When Daylight Saving takes effect you can go into setup CLOCK and click DST on.
When Daylight Saving ends you can go into setup CLOCK and click DST off.

It's most likely because of Daylight Saving Time. Your clock receives a signal through the air once a day from the actual atomic clock, much like a cell phone receives the time from your cell phone service provider, and it automatically resets itself to the exact time each time it receives this signal. Remember that the middle of the year (the second Sunday in March until the first Sunday in November in the US) is Daylight Saving Time for much of the United States. The clock has an option that allows you to set whether you are observing Daylight Saving Time or not. If this is set to "off", the time will be one hour behind until Daylight Saving Time ends (November 7th). Make sure this is set properly, and your problem will be solved.

To change the time on a prostar 816 you first need to be at a display set (doesn't matter what the extension number is).
with the handset down, enter #20 the screen should say MMC DISABLED
1) enter in 1 2 3 4 1 # (that enables programming)
2) enter in #55 the screen should say YYMMDDWHHMM
3) enter in the year, month, day, day of the week, hours and minutes(the day of the week values are 1= mon. 2= tues. etc.)
press # when finished.

The clock program for Daylight savings Time is programmed for the old "third Sunday in October" changeover. The new changeover is the first Sunday in November. The program probably cannot be updated. If there is no button or setting to disable automatic change to Daylight Savings Time you can set the time manually and then change it manually to Daylight Savings on November 1 for the time to be correct.

Hi!

Please follow the instructions given below... =)

Setting the clock

The clock is set to the correct time automatically, but it
can also be set manually. The clock can be set for
daylight saving time and time zone.
Preparation:
• Turn ON the TV and set it to the video input mode.
• Select “CLOCK” from “SYSTEM SETUP”. For the
procedure, see steps 1 to 3 in “Using the SETUP
MENU”

1 Press SETUP while the DVD and video tape is
stopped.
The SETUP MENU screen will appear.
TIMER REC SET
SYSTEM SETUP
AV SETUP
REC SETUP
CH SETUP
OTHER
SETUP MENU
ENTER/
SELECT ENTER RETURN BACK SETUP END
SELECT
2 Press
or  to select the desired menu and
press ENTER.
The submenu screen of the selected menu will appear.
TIMER REC SET
SYSTEM SETUP
AV SETUP
REC SETUP
CH SETUP
OTHER
LANGUAGE
PARENTAL
CLOCK
DISC SETUP
OTHER
SETUP MENU
3 Press
or  to select the desired submenu and
press ENTER.
The screen for the selected submenu will appear.




CLOCK (manually)
You can manually set the date, year and present time
with the remote control.
Ex.: Setting the clock to “10:20AM” October, 30th, 2004.
1 Select “CLOCK” and press ENTER.
01/01/04 12:00AM
2 Select the desired items using  or  (month,
date, year, hour, minute and AM/PM) then press
ENTER.
3 Press
or  to set the value of the selected
item.
• For the minutes, press
or  once to set the time
minute by minute, or hold down either of buttons
for several seconds to set the time in 10-minute
intervals.
10/30/04 10:200AM
4 Repeat steps 2 and 3 to set the date, year and
present time, and press ENTER. The SETUP MENU
will close.
This completes clock time setting.
AUTO CLOCK
You can automatically set the clock by turning “ON” the
AUTO CLOCK function.
When you want to set the auto clock function to “OFF”,
select “AUTO CLOCK”, press ENTER and select “OFF”
from the list.

Auto clock setting
Preparation:
You must connect the antenna or cable before connecting
the AC cord to the power source.
Wait 30 minutes with the power turned off, after the
antenna or cable is connected, for the auto clock
feature to activate.
After the clock is set automatically, you may have to set
the time zone and daylight saving time. (See page 26.)
Press STANDBY/ON to turn on the DVD/VCR after the
auto clock operation completed.
• When shipped from the factory, the “AUTO CLOCK”
option is set to “ON” position.
• If you turn the DVD/VCR on during auto clock
setting, the clock is not set.
• After a power failure or disconnection of the power
plug, the clock setting will be lost. In this case, wait
30 minutes before turning the DVD/VCR on.
• With cable box connection, if the auto clock setting
is unsuccessful, select the PBS channel carrying
the XDS information, then turn the DVD/VCR off.
After 30 minutes, turn the DVD/VCR on.
• If the clock is not set automatically, set the clock
manually.


STANDARD TIME (Time zone)
In the rare event that you live within the broadcast range
of two stations in two different time zones, the DVD/VCR
may recognize the wrong station for the auto clock set.
To correct the situation:
Select “STANDARD TIME” and select the time zone from
the list below.
Selectable time zones and correction times
ATLANTIC: GMT – 4 hours
(GMT: Greenwich Mean Time)
EASTERN: GMT – 5 hours
CENTRAL: GMT – 6 hours
MOUNTAIN: GMT – 7 hours
PACIFIC: GMT – 8 hours
ALASKA: GMT – 9 hours
HAWAII: GMT – 10 hours
AUTOMATIC: AUTO SET
Note
• When shipped from the factory, the “TIME ZONE” is
set to “AUTOMATIC”.
• After making the auto clock setting, in some cases
the clock may display another time zone. You can
correct the clock by selecting your time zone
setting above.
• When the clock is not set or you set the clock
manually, the time zone setting is not available.
DAYLIGHT SAVING TIME
You can set the clock to daylight saving time automatically
or manually.
To select daylight saving time, select “DAYLIGHT
SAVING TIME” and select “ON”, while to cancel the
daylight saving time, select “OFF”.
ON: For manual setting (forward 1 hour)
OFF: For manual setting (back 1 hour)
AUTOMATIC: For automatic setting (read XDS in
the signal)
Note
• When you want to set daylight saving time, on the
first Sunday in April you set it to “ON”, and on the
last Sunday in October you set it to “OFF”.
• When shipped from the factory, the “DAYLIGHT
SAVING TIME” option is set to “AUTOMATIC”.
• When the clock is not set, the daylight saving time
setting is not available.
• When there is no daylight saving time in your area,
always select “OFF”.

go to your local pbs channel then turn off tv turn back on and wait for auto time set to kick in.

Click on SETTINGS, GENERAL, scroll down one, TIME, select time zone, and select AUTO for DAYLIGHT SAVINGS.