Operation Guide 3278/3279
To do this:
Change the year, month, or day
Toggle the button operation tone between
Toggle the illumination duration between
(approximately 1.5 seconds) and
(approximately 3 seconds).
Toggle between Power Saving on (
5. Press A twice to exit the setting screen.
For details about the Button Operation Tone, see "To turn the button operation tone
on and off" (page E-84). For details about the Illumination duration, see "To specify
the illumination duration" (page E-56). For details about the Power Saving setting,
see "To turn Power Saving on and off" (page E-86).
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
The time calibration signals transmitted from Mainflingen (Germany), Anthorn
(England), or Fort Collins (the United States) include both Standard Time and DST
data. When the Auto DST setting is turned on, the watch switches between Standard
Time and DST (summer time) automatically in accordance with the signals.
Though the time calibration signals transmitted by the Fukushima and Fukuoka/
Saga, Japan transmitters include summer time data, summer time currently is not
implemented in Japan (as of 2010).
The default DST setting is Auto DST (
PAR, ROM, BER, STO, ATH, MOW, TYO, ANC, YVR, LAX, YEA, DEN, MEX, CHI,
NYC, YHZ, or YYT as your Home City code.
If you experience problems receiving the time calibration signal in your area, it
probably is best to switch between Standard Time and Daylight Saving Time
(summer time) manually.
Covered City Codes
TPE, SEL, TYO
HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT
Europe (U.K., Germany)
LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW
All other city codes
4. When the setting you want is selected, press A twice to exit the setting screen.
The DST indicator appears to indicate that Daylight Saving Time is turned on.
2. Press A once to display the tide site name selection screen.
The current tide site name will be on the display and
SET will flash.
3. Press D (forward) and B (back) to scroll through the
tide site names until the one you want is displayed.
If the tide site name is longer than four characters, the
name will scroll from right to left on the display.
A tide site that does not have any data assigned to it
displays the name "USER".
4. When all of the settings are the way you want, press A
to exit the setting screen.
The tide graph in the Timekeeping Mode shows
information for the site you select here.
The tide site candidates are those with the same UTC
differential as the current Home City. If you cannot find
the site you want, you can select "USER".
Only "USER" sites may be available for some city codes.
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Moon Phase Indicator
The Moon phase indicator of this watch indicates the
current phase of the Moon as shown below. It is based on
the view of the left side of the moon at meridian transit
from the northern hemisphere of the Earth. If the
appearance of the Moon phase indicator is reversed from
the actual Moon as viewed from your location, you can
use the procedure under "To reverse the displayed Moon
Moon Phase indicator
phase" (page E-40) to change the indicator.
Press D (+) and B (–).
) whenever you select LIS, LON, MAD,
Auto DST (
) can be selected only while LIS, LON, MAD, PAR, ROM, BER,
STO, ATH, MOW, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI,
NYC, YHZ, or YYT is selected as the Home City code. For more information, see
"Daylight Saving Time (DST)" (page E-72).
The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
12-hour and 24-hour timekeeping
With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for
times in the range of noon to 11:59 p.m. and no indicator appears to the left of the
hour digits for times in the range of midnight to 11:59 a.m.
With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press C and the DST setting screen appears.
3. Press D to cycle through the DST settings in the
sequence shown below.
Auto DST (
If you change your Home City to one that is within the same transmitter area, the
current DST setting will be retained. If you change to a city that is outside your
current transmitter area, DST will be turned off automatically.
Tide Site Name
Selecting a Tide Site Name
The tide site names you can select depend on your current Home City setting.
Select the tide site name in the Timekeeping Mode.
After configuring the settings for your Home City, press A once to display the tide
site name selection screen.
Note that the tide sites you can select are those located in the same time zone as
your Home City. They are not necessarily located near your Home City.
To configure tide site settings
1. In the Timekeeping Mode, hold down A for about two
seconds until the city code starts to flash. This is the
The watch will exit the setting screen automatically if
you do not perform any operation for about two or
Setting an accurate high tide time will allow the watch to produce accurate tide
readings. Especially when "USER" is selected as the site, make sure that you input
an accurate high tide time (page E-38).
Only a "USER" site can be selected while UTC is selected as the Home City.
(part you cannot see)
1.0-2.7 2.8-4.6 4.7-6.4 6.5-8.3 8.4-10.1 10.2-12.0 12.1-13.8
DST off (
DST on (
Moon phase (part you can see)