
Operation Guide 5605
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x If you need to advance the analog time setting a long way, hold down D
until the time starts advancing at high speed, and then press B. This locks
the highspeed hand movement, so you can release the two buttons. High-
speed hand movement continues until you press any button. It will also stop
automatically after the time advances 12 hours or if an alarm (multi-function
alarm, Hourly Time Signal, or countdown beeper) starts to sound.
4. Press A to exit the setting mode.
x The watch will automatically adjust the minute hand slightly to match its internal
second count when you exit the setting mode.
x To return to the Timekeeping Mode, press C.
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Setting the Analog Time
Perform the procedure below when the time indicated by the analog hands does
not match the time of the digital display.
To adjust the analog time
1. In the Timekeeping Mode, press C six times to enter
the Hand Setting Mode (page E-7).
2. Hold down A until the current digital time starts to
flash, which indicates the analog setting mode.
3. Press D to advance the analog time setting by
20seconds.
x Holding down D advances the analog time setting
at high speed.
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To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and
24-hour timekeeping.
x With 12-hour format, a P (PM) indicator is displayed near the hour digits between
the hours of noon to 11:59 p.m.
x With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
x The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
x The P indicator is not displayed with the Timekeeping Mode time on the
Countdown Timer Mode and Dual Time Mode screens.
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4. When the setting you want to change is flashing, use D and B to change it as
described below.
Setting Screen Button Operations
UTC Differential
Use D (+) and B (–) to change the setting.
x You can specify a value in the range of –12.0 to
+14.0, in 0.5-hour units.
Longitude Value
Use D (+) and B (–) to change the setting.
x You can specify a value in the range of 0° to 180°,
in 1-degree units.
East Longitude/
West Longitude
Use D to switch between east longitude (E) and
west longitude (W).
Lunitidal Interval Hours,
Minutes
Use D (+) and B (–) to change the setting.
x When the digital time DST setting is on, the UTC differential can be set in a
range of –11.0 to +15.0 in 0.5-hour units.
5. Press A to exit the setting screen.
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To configure Home Site data
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press A again to display the UTC differential setting
screen.
3. Press C to move the flashing in the sequence shown
below to select other settings.
UTC Differential
East Longitude/
West Longitude
Longitude Value
C
C
C
C
Lunitidal Interval Minutes Lunitidal Interval Hours
C
UTC differential
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x The following is the initial factory default Home Site data (Tokyo, Japan) when you
first purchase the watch, and whenever you have the battery replaced. Change
these settings to match the area where you normally use the watch.
UTC differential (+9.0); Longitude (East 140 degrees); Lunitidal interval (5 hours,
20 minutes)
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Home Site Data
Moon phase, tide graph data, and Moon/Tide Data Mode data will not be displayed
properly unless Home Site data (UTC differential, longitude, and lunitidal interval) is
configured correctly.
x The UTC differential is a value that indicates the time difference between a
reference point in Greenwich, England and the time zone where a city is located.
x The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the
world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the
Earth’s rotation.
x The lunitidal interval is the time elapsing between the Moon’s transit over a
meridian and the next high tide at that meridian. See “Lunitidal Interval” (page
E-47) for more information.
x This watch displays lunitidal intervals in terms of hours and minutes.
x The “Site/Lunitidal Interval Data List” at the back of this manual provides UTC
differential and longitude information around the world.
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To toggle the Timekeeping Mode digital time between DST and Standard Time
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press C once to display the DST setting screen.
3. Press D to toggle between Daylight Saving Time (On
displayed) and Standard Time (OF displayed).
4. Press A twice to exit the setting screen.
x The DST indicator appears on the Timekeeping,
Moon/Tide Data, Alarm, and Hand Setting Mode
screens to indicate that Daylight Saving Time is turned
on. In the case of the Moon/Tide Data Mode, the DST
indicator appears on the tide data screen only.
DST indicator
On/Off status
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x See “Digital Time Daylight Saving Time (DST) Setting” below for details about
the DST setting.
x The day of the week is displayed automatically in accordance with the date
(year, month, and day) settings.
Digital Time Daylight Saving Time (DST) Setting
Daylight Saving Time (summer time) advances the digital time setting by one hour
from Standard Time. Remember that not all countries or even local areas use
Daylight Saving Time.
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3. When the setting you want to change is flashing, use B and D to change it as
described below.
Screen To do this: Do this:
Reset the seconds to 00
Press D.
Toggle between Daylight Saving Time (On) and
Standard Time (OF)
Press D.
Change the hour or minutes
Use D (+) and B (–).
Change the year
Change the month or day
4. Press A twice to exit the setting screen.
x The first press of A displays the UTC differential setting screen. Pressing A
again exits the setting screen.
x Resetting the seconds only (without changing the DST, hour, or minute setting)
causes the analog minute hand setting to be adjusted automatically.