Casio 3320, 3352 Reference, Site/Lunitidal Interval Data List, Moon Phase Indicator, Tide Graph, Graphic Area, Auto Return Feature, Scrolling, Timekeeping

More than 15 degrees too high

Operation Guide 3320/3352

Reference

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.

	Module 3320			Module 3352
			Moon phase
			indicator
		(part you cannot see)		Moon phase (part you can see)
Moon	Module
Phase	3320
Indicator Module
	3352
Moon Age		0, 1, 29 2 - 5	6 - 9 10 - 13	14 - 16	17 - 20 21 - 24 25 - 28
Moon Phase		New	First	Full	Last
		Moon	Quarter	Moon	Quarter
			(Waxing)		(Waning)

•The Moon phase indicator shows the Moon as viewed at noon from a position in the Northern Hemisphere looking south. Note that at times the image shown by the Moon phase indicator may differ from that of the actual Moon in your area.

•The left-right orientation of the Moon phase is reversed when viewing from the Southern Hemisphere or from a point near the equator.

Moon Phases and Moon Age

The Moon goes through a regular 29.53-day cycle during which it appears to wax and wane due to how the Sun illuminates the Moon and the relative positioning of the Earth, Moon, and Sun. 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 performs a rough calculation of the current Moon age starting from day 0 of the moon age cycle. The actual Moon age average cycle is 29.53 days, but this can vary anywhere from –1 day to +1 day for specific months. Since this watch performs calculations using integer values only (no fractions), the margin for error of the displayed Moon age is ± 2 days.

Tide Graph

The Tide Graph screen shows one of three different waveforms to indicate spring tide, intermediate tide, or neap tide as the current tide pattern. In addition, the current tide level is indicated within the displayed tide pattern as a column of flashing dots.

Spring Tide Intermediate Tide Neap Tide

High

Middle

Low

•Spring Tide: Tides occurring at new and full Moons, when the range between high and low tide is greatest.

•Neap Tide: Tides occurring at first and third Moon quarters, when the range between high tide and low tide is smallest.

•Intermediate Tide: Indicates tide at the midpoint between spring tide and neap 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 gravitational interactions between the Earth, Moon and Sun. Tides rise and fall about every 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 interval differs according to your current location, so you must specify a lunitidal interval in order to obtain the correct tide graph readings.

Lunitidal Interval

Theoretically, high tide is at the Moon’s transit over the meridian and low tide is about six hours later. Actual high tide occurs somewhat 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 differential between the Moon’s transit over the meridian until low tide are known as the “lunitidal interval”. When setting the lunitidal interval for this watch, use the time differential between the Moon’s transit over the meridian until high tide.

Graphic Area

The following describes the information indicated by the graphic area in each mode.

Graphic area	Mode	Graphic Area
	Timekeeping	Timekeeping Mode seconds
	Moon/Tide Data	No indication
	Countdown Timer	Countdown time minutes
	Stopwatch	Stopwatch time seconds
	Alarm	No indication
	Hand Setting	No indication

Auto Return Feature

If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen.

Scrolling

The B and Dbuttons are used in various 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 display 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 displayed 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 makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s batteries replaced.

Illumination Precautions

•The electro-luminescent panel that provides illumination loses power after very long use.

•Display illumination may be hard to see when viewed under direct sunlight.

•The watch may emit an audible sound whenever the display is illuminated. This is due to vibration of the EL panel used for illumination, and does not indicate malfunction.

•Illumination automatically turns off whenever an alarm sounds.

•Frequent use of the light shortens the battery life.

Auto light switch precautions

•Avoid wearing the watch on the inside of your wrist.

Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.

• Illumination may not turn on if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground.

•Illumination turns off in about one second or three seconds, even if you keep the watch pointed towards your face.

•Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back towards you again. If this does not work, drop your arm all the way down so it hangs at your 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 watch towards you. This does not necessarily indicate malfunction of the auto light switch.

•You may notice a very faint clicking sound coming from the watch 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.

Site/Lunitidal Interval Data List

	GMT Differential			Lunitidal
Site	Standard	DST/	Longitude	Interval
	Time	Summer Time
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

*Based on data as of 2003.

4