Casio g2310r-1 Guida Utente

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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
Saving Time.

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. Use D to cycle through the DST settings in the

sequence shown below.

DST off (            )

DST on (        )

4. When the setting you want is selected, press A to exit the setting screen.

• The DST indicator appears to indicate that Daylight Saving Time is turned on.

DST indicator

• 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 P (PM) indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is

applied in all other modes.

• The day of the week is displayed automatically in accordance with the date (year,

month and day) settings.

• Button operation tone on and off

• Illumination duration

• Power Saving on and off

World Time shows the current time in 48 cities (31 time
zones) around the world.

• The times kept in the World Time Mode are

synchronized with the time being kept in the
Timekeeping Mode. If you feel that there is an error in
any World Time Mode time, check to make sure you
have the correct city selected as your Home City. Also
check to make sure that the current time as shown in
the Timekeeping Mode is correct.

• Select a city code in the World Time Mode to display the

current time in any particular time zone around the
globe. See the “UTC Differential/City Code List” for
information about the UTC differential settings that are
supported.

• All of the operations in this section are performed in the World Time Mode, which

you enter by pressing C.

City code

Current time in
selected city

To view the time in another city
While in the World Time Mode, use the D (eastward) and B (westward) buttons to
scroll through the city codes (time zones). Holding down either button scrolls at high
speed.

• Pressing the D and B buttons at the same time will jump to the UTC time zone.

1. In the World Time Mode, use D and B to display the

city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.

2. Hold down A to toggle between Daylight Saving Time

(DST indicator displayed) and Standard Time (DST
indicator not displayed).

• The DST indicator is shown on the World Time Mode

screen while Daylight Saving Time is turned on.

• You can turn on DST individually for each city code, except UTC.

• Turning on DST for the city code that is currently selected as your Home City will

turn on DST for normal timekeeping.

DST indicator

You can set up to five independent daily alarms with hour
and minutes. When an alarm is turned on, the alarm tone
sounds when the alarm time is reached. One of the
alarms is a snooze alarm, while the other four are usual
daily alarms.
You also can turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.

• There are five alarm screens numbered 

, 

,

 and 

 for the daily alarm, and a snooze alarm

screen indicated by 

. The Hourly Time Signal

screen is indicated by 

.

• All of the operations in this section are performed in the

Alarm Mode, which you enter by pressing C.

Alarm number

Alarm time
(Hour : Minutes)

Current Time

1. In the Alarm Mode, use D to scroll through the alarm

screens until the one whose time you want to set is
displayed.

• To set a daily alarm, display alarm screen 

, 

, 

 and 

. To set the

snooze alarm, display the 

 screen.

• The snooze alarm repeats every five minutes.

2. After you select an alarm, hold down A until the hour setting of the alarm time

starts to flash, which indicates the setting screen.

• This operation turns on the alarm automatically.

4. Use D (+) and B (–) to change the hour and minutes.

• With the 12-hour format, set the time correctly as a.m. or p.m. (P indicator).

5. Press A to exit the setting screen.

Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, until you turn the alarm off.

• Alarm and Hourly Time Signal operations are performed in accordance with the

Timekeeping Mode time.

• To stop the alarm tone after it starts to sound, press any button.

• Performing any one of the operations below during a 5-minute interval between

snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen
Displaying the 

 

setting screen

To test the alarm
In the Alarm Mode, hold down D to sound the alarm.

1. In the Alarm Mode, use D to select an alarm.
2. Press B to toggle it on and off.

• Turning on a alarm (

, 

, 

 and 

 or 

)

displays the alarm on indicator (

) on its Alarm Mode

screen.

• In all modes, the alarm on indicator is shown for any

alarm that is currently turned on.

• The alarm on indicator flashes while the alarm is

sounding.

• The snooze alarm indicator (

) flashes while the

snooze alarm is sounding and during the 5-minute
intervals between alarms.

Snooze
alarm
indicator

Alarm on
indicator

on

Alarm number

Current time

1. In the Alarm Mode, use D to select the Hourly Time

Signal (

).

2. Press B to toggle it on and off.

• The Hourly Time Signal on indicator ( ) is shown on the

display in all modes while this function is turned on.

Hourly time signal on
indicator

The stopwatch lets you measure elapsed time, split times,
and two finishes.

• The display range of the stopwatch is 23 hours,

59 minutes, 59.99 seconds.

• The stopwatch continues to run, restarting from zero

after it reaches its limit, until you stop it.

• The stopwatch measurement operation continues even

if you exit the Stopwatch Mode.

• Exiting the Stopwatch Mode while a split time is frozen

on the display clears the split time and returns to
elapsed time measurement.

• All of the operations in this section are performed in the

Stopwatch Mode, which you enter by pressing C.

1/100 second

Hours

Minutes

Seconds

D

➤

D

➤

D

➤

D

➤

B

Split Time
D

Split
(SPL displayed)

➤

B

➤

B

➤

D

➤

B

Two Finishes
D

➤

B

➤

D

➤

B

➤

B

First runner finishes.
Display time of first
runner.

Second runner
finishes.

Display time of
second runner.

You can set the countdown timer within a range of one
minute to 24 hours. An alarm sounds when the countdown
reaches zero.

• All of the operations in this section are performed in the

Countdown Timer Mode, which you enter by pressing
C.

Hours

Minutes

Seconds

1. While the countdown start time is on the display in the

Countdown Timer Mode, hold down A until the current
countdown start time starts to flash, which indicates the
setting screen.

• If the countdown start time is not displayed, use the

procedure under “To use the countdown timer” to
display it.

2. Press C to move the flashing in the sequence shown below.

Hours

Minutes

3. Use D (+) and B (–) to change the Hours and Minutes.

• To specify a countdown start time of 24 hours, set 

.

4. Press A to exit the setting screen.

3. Press C to move the flashing in the sequence shown below.

Hours

Minutes