User manual

ManualsBrandsCasio ManualsWatch2629

Operation Guide 2629

The watch adjusts the sunrise and sunset times that it displays in accordance with your current location. To ensure proper display of

sunrise and sunset times, you need to specify the name (city code), latitude, longitude, and GMT differential of your current location.

• Once you specify your current location, you do not need to change it unless you move to another relatively faraway location.

• The factory default configuration of the watch's location is: City: Tokyo; Latitude: North 35 degrees; Longitude: East 140 degrees;

GMT Differential: +9 hours.

Configuring Location Settings

❚

To specify the city

1. In the Timekeeping Mode

hold down the

A button

for about two seconds

until the current

transmitter mode setting

flashes on the display.

• This is the setting screen.

2. Press the

C button to

display the city code

selection screen.

• The currently selected city

code will be flashing on the

screen.

• The city code you select here

will also be used as your

Home City code in the

Timekeeping Mode.

3. Use the

C (+) and

B (–)

buttons to scroll

through the city codes

until the one you want is

displayed.

• Holding down either button

scrolls at high speed.

• See the “World Time City List”

for information about

the display sequence of the

city codes.

4. When the city code you

want is displayed, press

the

A button twice to exit

the setting screen.

• This stops the flashing and displays the current time and

date.

• The display also will exit the setting screen automatically if

you do not perform any operation for about two or three

minutes.

(Back)

(Forward)

❚

To specify the latitude, longitude, and

GMT differential

1. In the Timekeeping Mode,

press the

C button once

to enter the Sunrise/

Sunset Mode.

2. Hold down the

A button

for about two seconds

until the latitude and

longitude flash on the

display.

• This is the setting screen.

3. Use the

D (latitude) and

B (longitude) buttons

to scroll the latitude

values on the display until

they are configured the

way you want.

• Holding down either button

scrolls at high speed.

Latitude Range: 65S (South

65 degrees) – 0N – 65N

(North 65 degrees)

Longitude Range: 179W (West

179 degrees) – 0E – 180E

(East 180 degrees)

• Latitude and longitude values are rounded off to the

nearest degree.

• For more information about latitude and longitude, see

“Japanese Latitudes and Longitudes” and “GMT Differential,

Latitude, and Longitude”.

Longitude

Latitude

POS=Position

(Longitude)

(Latitude)

Sunrise/Sunset Mode

Sunrise/Sunset Mode Screen

❚

To view the sunrise and sunset times for

the current date

In the Timekeeping Mode,

press the

C button once

to enter the Sunrise/

Sunset Mode.

• This displays the sunrise and

sunset times for the current

date as kept in the

Timekeeping Mode.

Graphic Display

The graphic display in the upper right also indicates the sunrise

and sunset times.

Noon

Daytime

Nighttime

Sunset Time

Sunrise Time

Midnight

❚

To view the sunrise and sunset times for

a specific date

In the Sunrise/Sunset

Mode, use the

D (+) and

B (–) buttons to scroll

through dates until the

one whose times you

want to view is displayed.

• Holding down either button scrolls at high speed.

• You can select any date within the range of January 1,

2000 through December 31, 2099.

(Forward)

(Back)

Year

Month- day

Sunrise Time

Sunset Time

• The watch will automatically return to the Timekeeping

Mode if you do not perform any operation for two or three

minutes in the Sunrise/Sunset Mode.

❚

Sunrise and Sunset Times

• The sunrise and sunset times

displayed by this watch are

the times at sea level (0

meters). Sunrise and sunset

times are slightly different at

altitudes other than sea level.

As a general rule, sunrise is

earlier and sunset is later at

higher altitudes.

Sunrise/Sunset Time Calculation

Sunrise and sunset times are determined in accordance with

apparent right ascension, sidereal time, and apparent declination

(season-dependent solar altitude angle) based a particular

location’s GMT differential, latitude, and longitude. This watch

uses a simplified calculation algorithm that applies this data to

calculate reasonably accurate sunrise and sunset times.

Depending on your location, however, there may be slight error in

the sunrise and sunset times produced by this watch.

Sunrise/Sunset Time Calculation Error

Low to Mid Latitudes: Within about 5 minutes

High Latitudes: About 5 to 15 minutes

Sunrise

Sunset

Sea Level

❚

Japanese Latitudes and Longitudes

130° 132° 134° 136° 138°

140°142°144°

44°

42°

40°

38°

36°

34°

32°

(East Longitude)

(North Latitude)

Okinawa

Prefecture

Kagoshima

Prefecture

128°

26°

Sapporo

Hakodate

Tokyo

Nagoya

Shimizu

Osaka

Hakata

Hiroshima

Sasebo

Naha

4. Press the

C button so

the GMT differential

setting flashes.

5. Use the

D (+) and B (–)

buttons to change the

GMT differential setting in

0.5-hour (30-minute)

steps.

• Holding down either button

scrolls at high speed.

GMT Differential Range: –11.0

hours to +14.0 hours.

• For more details about the

GMT differential, see “GMT

Differential, Latitude, and

Longitude”.

6. When all the settings are

the way you want, press

the

A button.

• This displays the current year,

month, and day, following by

the sunrise and sunset times

for the current date and

location.

• The display also will exit the setting screen automatically if

you do not perform any operation for about two or three

minutes.

GMT Differential

GMT = Greenwich Mean Time

(Forward)

(Back)

Sunrise Time

Sunset Time