Operation Guide 2926
4
Reference
This section contains more detailed and technical information about watch oper ation.
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 .
Moon Phase
Indicator
Moon Age
Moon Phase
0, 1, 29 2 - 5 6 - 9 10 - 13 14 - 16 17 - 20 21 - 24 25 - 28
New
Moon
First
Quar ter
(Waxing)
Full
Moon
Last
Quarter
(W aning)
(part you cannot see)
Moon phase (part you can see)
• The Moon phase indicator shows the Moon as view ed at noon from a position in the
Norther n Hemisphere looking south. Note that at times the image shown by the
Moon phase indicator may diff er from that of the actual Moon in your area.
• The left-right orientation of the Moon phase is reversed when vie wing from the
Southern Hemisphere or from a point near the equator.
Moon Phases and Moon Age
The Moon goes through a regular cycle that av erages 29.53 days. During each cycle,
the Moon appears to wax and wane as the relativ e positioning of the Ear th, Moon, and
Sun changes. The greater the angular distance between the Moon and the Sun,
*
the
more we see illuminated.
*
The angle to the Moon in relation to the direction at which the Sun is visible from the
Earth.
This watch perf orms a rough calculation of the current Moon age star ting from da y 0
of the moon age cycle. Since this watch performs calculations using integer values
only (no fractions), the margin f or error of the displayed Moon age is ±3 da ys.
Tide Graph
The blac k bars on the watch’ s tide graph indicate the current tide.
Tidal Movements
Tides are the periodic rise and fall of the water of oceans, seas , bays, and other
bodies of water caused mainly by the g ravitational interactions between the Earth,
Moon and Sun. Tides rise and fall about ev ery six hours. The tide graph of this watch
indicates tidal movement based on the Moon’ s transit over a meridian and the lunitidal
interval. The lunitidal inter v al differs according to y our current location, so you must
specify a lunitidal interval in order to obtain the correct tide graph readings .
High
tide
Low
tide
• The tide graph displa yed by this watch is based on the current Moon age .
Remember that the margin for error of the Moon age displa yed b y this watch is ±3
days . The greater the error in a par ticular Moon age , the greater the error in the
resulting tide graph.
Lunitidal Interval
Theoretically , high tide is at the Moon’s transit o ver the meridian and low tide is about
six hours later . Actual high tide occurs some what later , due to factors such as
viscosity , friction, and underwater topography . Both the time differential between the
Moon’ s transit over the meridian until high tide and the time diff erential between the
Moon’ s transit over the meridian until low tide are kno wn as the “lunitidal interval. ”
When setting the lunitidal interval for this w atch, use the time differential between the
Moon’ s transit over the meridian until high tide.
Auto Return Feature
If you leav e a screen with flashing digits on the display for two or three minutes without
performing any operation, the w atch automatically saves an y settings you hav e made
up to that point and exits the setting screen.
Scrolling
The B and D buttons are used in v arious modes and setting screens to scroll
through data on the display . In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to 00 without changing the minutes.
• With the 12-hour format, the P (PM) indicator appears on the displa y for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
• With the 24-hour format, times are displa yed in the range of 0:00 to 23:59, without
any indicator .
• The year can be set in the range of 2000 to 2039.
• The watch’ s built-in full automatic calendar mak es allowances for diff erent month
lengths and leap years. Once you set the date, there should be no reason to change
it except after y ou have the w atch’s battery replaced.
Illumination Precautions
• Illumination may be hard to see when vie wed under direct sunlight.
• Illumination automatically turns off whenever an alarm sounds.
• Frequent use of illumination runs down the battery .
Aut o light s witch precautions
• Wearing the watch on the inside of your wrist, mov ement of your arm, or vibration of
your arm can cause frequent activation of the auto light s witch and illumination of the
display . T o avoid running down the battery , turn off the auto light switch whenev er
engaging in activities that might cause frequent illumination of the display .
More than 15 degrees
too high
• Illumination may not turn on if the face of the w atch is
more than 15 degrees abov e or below parallel. Make
sure that the back of your hand is par allel to the ground.
• Illumination turns off in about one second, even if y ou
keep the watch pointed towards y our face.
• Static electricity or magnetic force can interf ere with
proper operation of the auto light s witch. If illumination
does not turn on, tr y mo ving the watch back to the
starting position (parallel with the ground) and then tilt it
back tow ards you again. If this does not work, drop your
arm all the way down so it hangs at y our side, and then
bring it back up again.
• Under certain conditions, illumination may not turn on until about one second after
you turn the face of the w atch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• Yo u ma y notice a very faint clicking sound coming from the w atch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
Anchorage –9.0 –8.0 149°W 5:40
Bahamas –5.0 –4.0 77°W 7:30
Baja, California –7.0 –6.0 110°W 8:40
Bangkok +7.0 +8.0 101°E 4:40
Boston –5.0 –4.0 71°W 11:20
Buenos Aires –3.0 –2.0 58°W 6:00
Casablanca +0.0 +1.0 8°W 1:30
Christmas Island +14.0 +15.0
(
*
)
158°W 4:00
Dakar +0.0 +1.0 17°W 7:40
Gold Coast +10.0 +11.0 154°E 8:30
Great Barrier Reef, Cairns +10.0 +11.0 146°E 9:40
Guam +10.0 +11.0 145°E 7:40
Hamburg +1.0 +2.0 10°E 4:50
Hong Kong +8.0 +9.0 114°E 9:10
Honolulu –10.0 –9.0 158°W 3:40
Jakarta +7.0 +8.0 107°E 0:00
Jeddah +3.0 +4.0 39°E 6:30
Karachi +5.0 +6.0 67°E 10:10
Kona, Hawaii –10.0 –9.0 156°W 4:00
Lima –5.0 –4.0 77°W 5:20
Lisbon +0.0 +1.0 9°W 2:00
London +0.0 +1.0 0°E 1:10
Los Angeles –8.0 –7.0 118°W 9:20
Maldives +5.0 +6.0 74°E 0:10
Manila +8.0 +9.0 121°E 10:30
Mauritius +4.0 +5.0 57°E 0:50
Melbourne +10.0 +11.0 145°E 2:10
Miami –5.0 –4.0 80°W 7:30
Noumea +11.0 +12.0 166°E 8:30
Pago Pago –11.0 –10.0 171°W 6:40
Palau +9.0 +10.0 135°E 7:30
Panama City –5.0 –4.0 80°W 3:00
Papeete –10.0 –9.0 150°W 0:10
Rio De Janeiro –3.0 –2.0 43°W 3:10
Seattle –8.0 –7.0 122°W 4:20
Shanghai +8.0 +9.0 121°E 1:20
Singapore +8.0 +9.0 104°E 10:20
Sydney +10.0 +11.0 151°E 8:40
Tokyo +9.0 +10.0 140°E 5:20
Vancouver –8.0 –7.0 123°W 5:10
Wellington +12.0 +13.0 175°E 4:50
Site/Lunitidal Interval Data List
GMT Differential
Lunitidal
Site Standard DST/ Longitude
Interval
Time Summer Time
•
Based on data as of 2003.
*
This watch does not support a GMT differential of +15.0.