Casio | WATCH 5163 | User's Manual | Casio WATCH 5163 User's Manual

MA1103-EA
Operation Guide 5163 (OC)
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure
to read this manual carefully.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by
you or any third party arising through the use of this product or its malfunction.
Keep the watch exposed to bright light
Bright Light
Solar cell
The electricity generated by the solar cell of the watch is stored by a built-in
battery. Leaving or using the watch where it is not exposed to light causes
the battery to run down. Make sure the watch is exposed to light as much as
possible.
x When you are not wearing the watch on your wrist, position the face so it is
pointed at a source of bright light.
x You should try to keep the watch outside of your sleeve as much as
possible. Charging is reduced significantly if the face is even only partially
covered.
E-1
x The watch continues to operate, even when it is not exposed to light. Leaving the watch in the dark can
cause the battery to run down, which will result in some watch functions to be disabled. If the battery
goes dead, you will have to re-configure watch settings after recharging. To ensure normal watch
operation, be sure to keep it exposed to light as much as possible.
Battery charges in the light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function has turned off the
display to conserve power.
x See “Power Saving Function” (page E-50) for more information.
Battery discharges in the dark.
Bright Light
Solar cell
(Converts light to
electrical power.)
Electrical
energy
LEVEL 1
LEVEL 2
Charge
LEVEL 1
All functions
enabled
LEVEL 3
LEVEL 4
LEVEL 2
Discharge
LEVEL 3
LEVEL 4
Some or all
functions
disabled
Rechargeable battery
x The actual level at which some functions are disabled depends on the watch model.
x Frequent display illumination can run down the battery quickly and require charging. The following
guidelines give an idea of the charging time required to recover from a single illumination operation.
− Approximately 5 minutes exposure to bright sunlight coming in through a window
− Approximately about 8 hours exposure to indoor fluorescent lighting
x Be sure to read “Power Supply” (page E-36) for important information you need to know when
exposing the watch to bright light.
E-2
E-3
About This Manual
x Depending on the model of your watch, display text appears either as
dark figures on a light background or light figures on a dark background.
All sample displays in this manual are shown using dark figures on a light
background.
x Button operations are indicated using the letters shown in the illustration.
x Each section of this manual provides you with the information you need to
perform operations in each mode. Further details and technical information
can be found in the “Reference” section.
Contents
E-1
Getting Acquainted
E-8
General Guide
E-10 Radio Controlled Atomic Timekeeping
E-11 To specify your Home City
E-20 To perform manual receive
E-22 To check the latest signal reception results
E-24 World Time
E-25 To view the current time in another time zone
E-25 To toggle a city code time between Standard Time and Daylight Saving Time
E-26 To swap your Home City and World Time City
E-27 Stopwatch
E-28 To measure times with the stopwatch
E-29 Countdown Timer
E-29 To configure countdown start time and auto-repeat settings
E-30 To use the countdown timer
E-31 Alarms
E-31 To set an alarm time
E-33 To turn an alarm on and off
E-33 To turn the Hourly Time Signal on and off
E-4
E-5
E-34 Illumination
E-34 To illuminate the display manually
E-35 To turn the auto light switch on and off
E-36 Power Supply
E-42 Timekeeping
E-43 To set the time and date manually
E-46 To change the Daylight Saving Time (summer time) setting
E-47 To specify the Dual Time City
E-48 Correction of Hand Home Positions
E-48 To trigger auto correction of hand home positions
E-49 To adjust the home positions manually
E-50 Reference
E-50 To recover from the sleep state
E-51 To turn Power Saving on and off
E-55 Specifications
E-6
E-7
Operation Guide 5163 (OC)
General Guide
x Press C to change from mode to mode.
x In any mode (except a setting mode), press B to illuminate the display for about one second.
World Time Mode (page E-24)
Stopwatch Mode (page E-27)
Alarm Mode (page E-31)
Countdown Timer Mode (page E-29)
Timekeeping Mode
Press C.
E-8
E-9
Radio Controlled Atomic Timekeeping
To specify your Home City
This watch receives a time calibration signal and updates its time setting accordingly.
x This watch is designed to pick up the time calibration signals transmitted in Germany (Mainflingen),
England (Anthorn), the United States (Fort Collins), China (Shangqiu), and Japan (Fukushima, Fukuoka/
Saga).
x See the information under “Signal Reception Troubleshooting” (page E-23) if you experience problems
with time calibration signal reception.
Left dial hand
1. In the Timekeeping Mode, hold down A for about five seconds until the
left dial hand points to T1 and the city code flashes on the upper display.
This is the setting mode.
City code
2. Press D (east) and B (west) to select the city code you want to use as
your Home City.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration signal. You also can
perform a manual procedure to set the time and date, when necessary.
x The first thing you should do after purchasing this watch is to specify your Home City (the city
where you normally will use the watch). For more information, see “To specify your Home City”
on page E-11.
x When using the watch outside the areas covered by the time signal transmitters, you will have to adjust
the current time setting manually as required. See “To set the time and date manually” (page E-43) for
more information about manual time settings.
x The North American time calibration signal can be picked up by the watch while in North America. The
term “North America” in this manual refers to the area that consists of Canada, the continental United
States, and Mexico.
x Using this watch in a country covered by a time calibration signal that is different from the countries it
supports may result in incorrect time indication due to local application of summer time, etc.
PM indicator
Seconds
Hour : Minutes
LIS, LON
MAD, PAR, ROM, BER, STO
ATH
MOW
HKG, BJS, TPE
SEL, TYO
: Lisbon, London
: Madrid, Paris, Rome, Berlin, Stockholm
: Athens
: Moscow
: Hong Kong, Beijing, Taipei
: Seoul, Tokyo
HNL
: Honolulu
ANC
YVR, LAX
YEA, DEN
MEX, CHI
MIA, YTO, NYC
YHZ
YYT
: Anchorage
: Vancouver, Los Angeles
: Edmonton, Denver
: Mexico City, Chicago
: Miami, Toronto, New York
: Halifax
: St. Johns
E-11
E-10
3. Press A twice to exit the setting mode.
x Normally, your watch should show the correct time as soon as you select your Home City code. If
it does not, it should adjust automatically after the next auto receive operation (in the middle of the
night). You also can perform manual receive (page E-20) or you can set the time manually (page
E-43).
x The watch will receive the time calibration signal automatically from the applicable transmitter (in
the middle of the night) and update its settings accordingly. For information about the relationship
between city codes and transmitters, see page E-15 and “Transmitters” (page E-52).
x See the maps under “Approximate Reception Ranges” (page E-16) for information about the
reception ranges of the watch.
Important!
x When getting ready to receive the time calibration signal, position the watch as shown in the nearby
illustration, with its 12 o’clock side pointing towards a window. This watch is designed to receive a time
calibration signal late at night. Because of this, you should place the watch near a window as shown in
the illustration when you take it off at night. Make sure there are no metal objects nearby.
12 o’clock
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal: auto receive and
manual receive.
x Auto Receive
With auto receive, the watch receives the time calibration signal automatically up to six times a day (five
times for the China signal). When any auto receive is successful, remaining auto receive operations are
not performed. For more information, see “About Auto Receive” (page E-18).
or
x Make sure the watch is facing the right way.
x Manual Receive
Manual receive lets you start a time calibration receive operation with the press of a button. For more
information, see “To perform manual receive” (page E-20).
E-12
E-13
x Proper signal reception can be difficult or even impossible under the conditions listed below.
x The time calibration signal the watch will attempt to pick up depends on its current Home City code
setting as shown below.
Home City Code
Inside or among
buildings
Inside a vehicle
Near household
appliances,
office equipment,
or a mobile
phone
Near a
construction
site, airport, or
other sources of
electrical noise
Near
high-tension
power lines
Among or behind
mountains
x Signal reception normally is better at night than during the day.
x Time calibration signal reception takes from two to seven minutes, but in some cases it can take as
long as 14 minutes. Take care that you do not perform any button operations or move the watch during
this time.
E-14
Transmitter
Frequency
LON, PAR, BER, ATH, LIS, MAD,
ROM, STO, MOW*
Anthorn (England)
60.0 kHz
Mainflingen (Germany)
77.5 kHz
HKG, BJS
Shangqiu City (China)
68.5 kHz
TPE, SEL, TYO
Fukushima (Japan)
40.0 kHz
Fukuoka/Saga (Japan)
60.0 kHz
HNL*, ANC*, LAX, DEN, CHI, NYC,
YVR, YEA, MEX, MIA, YTO, YHZ, YYT Fort Collins, Colorado (the United States)
60.0 kHz
* The areas covered by the HNL, ANC, and MOW city codes are quite far from the time calibration signal
transmitters, and so certain conditions may cause problems with signal reception.
x Calibration signal reception is disabled while a countdown timer operation is in progress.
E-15
Operation Guide 5163 (OC)
x Signal reception may not be possible at the distances that are further than those noted below during
certain times of the year or day. Radio interference also may cause problems with reception.
− Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles)
− Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
− Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
− Shangqiu (China) transmitter: 1,500 kilometers (910 miles)
x Even when the watch is within the reception range of the transmitter, signal reception will be impossible
if the signal is blocked by mountains or other geological formations between the watch and signal
source.
x Signal reception is affected by weather, atmospheric conditions, and seasonal changes.
x As of September 2009, China does not use Daylight Saving Time (DST). If China does go to the
Daylight Saving Time system in the future, some functions of this watch may no longer operate
correctly.
Approximate Reception Ranges
UK and German Signals
North American Signal
2,000 miles
(3,000 kilometers)
Anthorn
500 kilometers
600 miles
(1,000 kilometers)
1,500 kilometers
Fort Collins
The Anthorn signal is
receivable within this area.
Mainflingen
Japanese Signals
Fukushima
Chinese Signal
500 kilometers
Changchun
500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
Fukuoka/Saga
1,000 kilometers
Signals are receivable in the Taiwan area when
reception conditions are good.
1,500 kilometers
E-16
E-17
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day (five times for the China
signal). When any auto receive is successful, remaining auto receive operations are not performed.
The reception schedule (calibration times) depends on your currently selected Home City, and whether
standard time or Daylight Saving Time is selected for your Home City.
Auto Receive Start Times
Your Home City
1
2
3
4
5
6
LON
LIS
Standard Time
Daylight Saving Time
1:00 am
2:00 am
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
PAR
BER
MAD
ROM
STO
Standard Time
Daylight Saving Time
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
ATH
Standard Time
Daylight Saving Time
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
Time
MOW Standard
Daylight Saving Time
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
3:00 am*
4:00 am*
HKG
BJS
Standard Time
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
TYO
TPE
SEL
Standard Time
Midnight
1:00 am
2:00 am
3:00 am
4:00 am
Auto Receive Start Times
Your Home City
HNL
ANC
LAX
DEN
CHI
NYC
YVR
YEA
MEX
MIA
YTO
YHZ
YYT
Standard Time and
Daylight Saving Time
1
2
3
4
5
6
Midnight
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
*Next day
5:00 am
Note
x When a calibration time is reached, the watch will receive the calibration signal only if it is in either the
Timekeeping Mode or World Time Mode. Reception is not performed if a calibration time is reached
while you are configuring settings.
x Auto receive of the calibration signal is designed to be performed early in the morning, while you sleep
(provided that the Timekeeping Mode time is set correctly). Before going to bed for the night, remove
the watch from your wrist, and put it in a location where it can receive the signal easily.
x The watch receives the calibration signal for two to 14 minutes everyday when the time in the
Timekeeping Mode reaches a calibration time. Do not perform any button operation within 14 minutes
before or after the calibration times. Doing so can interfere with correct calibration.
x Remember that reception of the calibration signal depends on the current time in your Home City, as
kept in the Timekeeping Mode.
E-18
E-19
To perform manual receive
1. Place the watch on a stable surface so its 12 o’clock side is facing towards
Receiving
a window (page E-13).
Receive successful
2. In the Timekeeping Mode, hold down A for about two seconds until the
watch beeps.
R (READY)
W (WORK)
3. The digital display will go blank, and the left dial hand will move to
R (READY). This indicates that the watch is getting ready for time calibration
signal reception.
x See the information under “Signal Reception Troubleshooting” (page
E-23) if you experience problems.
x The left dial hand will move to W (WORK) and stay there while actual
reception is in progress.
x If signal reception is unstable during reception, the left dial hand may
move between W (WORK) and R (READY).
x The hour and minute hands continue to keep time normally.
Receive failed
x Time calibration signal reception takes from two to seven minutes, but in
some cases it can take as long as 14 minutes. Take care that you do not
perform any button operations or move the watch during this time.
x When a signal receive operation is successful, GET appears on the upper
display and the lower display shows the time and date of the successful
operation. The watch will adjust its time setting in accordance with the
information provided by the signal.
x The watch will return to the Timekeeping Mode if you press A or if you do
not perform any operation for about one or two minutes.
x ERR will appear on the upper display if the receive operation is not
successful. The watch will not adjust its time setting in this case. Press A
to return to the Timekeeping Mode.
Note
x To interrupt a receive operation and return to the Timekeeping Mode, press
any button.
E-20
E-21
To check the latest signal reception results
In the Timekeeping Mode, press A to view the last successful receive time and date.
Press A again to return to the previous screen.
Date
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Probable Cause
What you should do
I can’t receive a time
calibration signal.
x You performed some button operation
during auto receive.
x The watch is not in the Timekeeping Mode
or World Time Mode.
x The watch is in a location where the signal
cannot be received for some reason.
x A countdown timer operation is in
progress.
x Radio interference is often present during
the day time, which can interfere with
signal reception.
x Perform manual receive at night or wait
until the next auto receive operation is
performed.
x Enter the Timekeeping Mode or World
Time Mode and try again.
x Enter the Countdown Timer Mode and
stop the countdown (page E-29).
x Check to make sure the watch is in a
location where it can receive the signal
(page E-13).
The time setting is
incorrect following
signal reception.
x If the time is one hour off, the DST setting
may be incorrect.
x The Home City code setting is not correct
for the area where you are using the
watch.
x The home positions of the hands are off.
x Change the DST setting to Auto DST
(page E-46).
x Select the correct Home City code
(page E-11).
x Enter the home position adjustment
mode and adjust the home positions
(page E-48).
Hour : Minutes
x For further information, see “Important!” (page E-13) and “Radio-controlled Atomic Timekeeping
Precautions” (page E-51).
E-22
E-23
Operation Guide 5163 (OC)
World Time
Currently selected
World Time City
World Time hour
World Time digitally displays the current time in one of 48 cities (29 time zones)
around the world. A simple operation swaps your Home City with the currently
selected World Time City.
x 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.
x Times in the World Time Mode are based on UTC offsets. See the “City
Code Table” at the back of this manual for information about the UTC offsets
that are supported.
x All of the operations in this section are performed in the World Time Mode,
which you enter by pressing C (page E-9).
Right Dial Hand
Current time in
World Time City
The right dial hand shows the current hour in the World Time City in all modes.
x The right dial hand moves once every 12 minutes, and completes one
revolution every 12 hours.
x Between noon and midnight in the World Time Mode, a PM indicator (PM )
appears above the right dial hand.
PM indicator
To view the current time in another time zone
In the World Time Mode, use D to scroll through available city codes (time zones).
Holding down the button scrolls at high speed.
x When the city code (time zone) you want is selected, you can press A to display the date. After about
one second, the watch will resume regular timekeeping.
Press A.
One second
Hour : Minutes Seconds
Date
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, press D to display the city code (time zone)
whose Standard Time/Daylight Saving Time setting you want to change.
2. Hold down A for about three seconds to toggle between Daylight Saving
Time (DST indicator displayed) and Standard Time (DST indicator not
displayed).
DST indicator
E-25
E-24
Swapping your Home City and World Time City
Stopwatch
You can use the procedure below to swap your Home City and World Time City. This changes your Home
City to your World Time City, and your World Time City to your Home City. This capability can come in
handy when you frequently travel between two cities in different time zones.
x If your current World Time City supports receipt of a time calibration signal, making it your Home City
enables calibration signal reception.
x For information about which cities support time calibration signal reception, see “To specify your Home
City” (page E-11).
Hours
To swap your Home City and World Time City
1. In the World Time Mode, use D to select the World Time City you want.
2. Hold down A and B until the watch beeps.
x This will make the World Time City you selected in step 1 your new Home City, and cause the hour and
minute hands to move to the current time in that city. At the same time, the Home City you had selected
prior to step 2 will become your new World Time City. The content of the upper and lower displays will
change accordingly.
x After swapping the Home City and World Time City, the watch stays in the World Time Mode with the
city that was selected as the Home City prior to step 2 now displayed as the World Time City.
SPL indicator
1/100 second
Seconds
The stopwatch lets you measure elapsed time, split times, and two
finishes.
x The digital display range of the stopwatch is 23 hours, 59 minutes,
59.99 seconds.
x The stopwatch continues to run, restarting from zero after it
reaches its limit, until you stop it.
x The stopwatch measurement operation continues even if you exit
the Stopwatch Mode.
x Exiting the Stopwatch Mode while a split time is frozen on
the display clears the split time and returns to elapsed time
measurement.
x All of the operations in this section are performed in the Stopwatch
Mode, which you enter by pressing C (page E-9).
Minutes
E-26
E-27
To measure times with the stopwatch
Countdown Timer
Elapsed Time
D
D
Start
Stop
D
Re-start
D
Stop
A
Clear
Split Time
D
A
Start
Split
(SPL indicator
displayed)
A
Split release
D
Stop
A
Clear
Two Finishes
D
A
Start
Split
First runner finishes.
Display time of first
runner.
D
Stop
Second runner
finishes.
A
Split release
Display time of
second runner.
You can set the countdown timer start time within a range of one minute to 60 minutes. An alarm sounds
when the countdown reaches zero.
x You also can select auto-repeat, which automatically restarts the countdown from the original value you
set whenever zero is reached.
x All of the operations in this section are performed in the Countdown Timer Mode, which you enter by
pressing C (page E-9).
To configure countdown start time and auto-repeat settings
1. While the countdown start time is on the display in the Countdown Timer
Mode, hold down A for about three seconds until the minute setting of the
countdown start time starts to flash. This is the setting mode.
x If the countdown start time is not displayed, use the procedure under “To
use the countdown timer” (page E-30) to display it.
A
2. Press C to move the flashing in the sequence shown below, and select the
setting you want to change.
Clear
C
Start time (minutes)
Start Time (Minutes)
Auto-Repeat On/Off
3. Perform the following operations, depending on which setting currently is selected on the display.
x While the start time setting is flashing, use D (+) and B (–) to change it.
x While the auto-repeat on/off setting (0N or 0FF) is flashing on the display, press D to toggle
auto-repeat on (0N) and off (0FF).
E-29
E-28
4. Press A to exit the setting mode.
x The auto-repeat on indicator ( ) will appear in the upper display while this function is turned on.
x Frequent use of auto-repeat and the alarm can run down battery power.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
auto-repeat on indicator
x When the end of the countdown is reached and auto-repeat is turned off, the
alarm will sound for 10 seconds or until you stop it by pressing any button.
Start time (minutes)
The countdown time is reset to its starting value automatically after the alarm
stops.
x When auto-repeat is turned on, the countdown will restart automatically
without pausing when it reaches zero. The alarm sounds to signal when the
countdown reaches zero. The countdown is repeated up to eight times, and
then stops.
x The number of the current repeat (1 to 8) is shown in the lower display.
x The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
x To stop a countdown timer operation completely, first pause it (by pressing
Minutes
D), and then press A. This returns the countdown time to its starting value.
Alarms
Alarm number
Alarm time
(Hour : Minutes)
When an alarm is turned on, the alarm tone will sound when its alarm time
is reached. One of the alarms is a snooze alarm, while the other four are
one-time alarms.
You also can turn on an Hourly Time Signal that causes the watch to beep
twice every hour on the hour.
x There are five alarm screens numbered AL1, AL2, AL3 and AL4
for the one-time alarm, and a snooze alarm screen indicated by SNZ. The
Hourly Time Signal screen is indicated by SIG.
x All of the operations in this section are performed in the Alarm Mode, which
you enter by pressing C (page E-9).
To set an alarm 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.
Seconds
Number of the current
repeat
E-30
x To set a one-time alarm, display alarm screen AL1, AL2, AL3 or
AL4. To set the snooze alarm, display the SNZ screen.
x SIG is the hourly time signal setting (page E-33).
x The snooze alarm repeats every five minutes.
E-31
Operation Guide 5163 (OC)
2. After you select an alarm, hold down A for about three seconds until the hour setting of the alarm time
starts to flash. This is the setting mode.
x This operation turns on the alarm automatically.
3. Press C to move the flashing between the hour and minute settings.
To turn an alarm on and off
1. In the Alarm Mode, use D to select an alarm.
Alarm on indicator
Snooze alarm indicator
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting mode.
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, or
until you turn the alarm off (page E-33).
x Alarm and Hourly Time Signal operations are performed in accordance with the current time in your
Home City, as kept in the Timekeeping Mode.
x To stop the alarm tone after it starts to sound, press any button.
x Performing any one of the following operations during a 5-minute interval between snooze alarms
cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen (page E-43)
Displaying the SNZ setting screen (page E-31)
2. Press A to toggle it on (on) and off (- -).
x Turning on an alarm (AL1, AL2, AL3, AL4 or SNZ)
displays the alarm on indicator on its Alarm Mode screen.
x In all modes, the alarm on indicator is shown for any alarm that
currently is turned on.
x The alarm on indicator flashes while the alarm is sounding.
x The snooze alarm indicator flashes while the snooze alarm is
sounding and during the 5-minute intervals between alarms.
ON
To turn the Hourly Time Signal on and off
Hourly time signal on indicator 1. In the Alarm Mode, use D to select the Hourly Time Signal ( SIG )
(page E-31).
2. Press A to toggle it on (on) and off (- -).
x The Hourly Time Signal on indicator is shown on the display in all
modes while this function is turned on.
E-32
E-33
Illumination
Auto light switch
on indicator
An LED (light-emitting diode) illuminates the face of the watch for easy reading
in the dark. The watch’s auto light switch turns on illumination automatically
when you angle the watch towards your face.
x The auto light switch must be turned on (indicated by the auto light switch
on indicator) for it to operate.
x See “Illumination Precautions” (page E-54) for other important information
about using illumination.
To illuminate the display manually
In any mode (except a setting mode), press B to turn on the illumination for
about one second.
x The above operation turns on illumination regardless of the current auto light
switch setting.
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as
described below in any mode.
Note that this watch features a “Full Auto LED Light”, so the auto light switch operates only when available
light is below a certain level. It does not illuminate the display under bright light.
x The auto light switch is always disabled, regardless of its on/off setting, when any one of the following
conditions exists.
− While an alarm is sounding
− While a signal receive operation is in progress
Moving the watch to a position that is parallel to the ground and then tilting it towards you more than
40 degrees causes illumination to turn on.
x Wear the watch on the outside of your wrist.
Parallel to
ground
Warning!
x Always make sure you are in a safe place whenever you are reading the display of the watch
using the auto light switch. Be especially careful when running or engaged in any other activity
that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not startle or distract
others around you.
x When you are wearing the watch, make sure that its auto light switch is turned off before riding a
bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation
of the auto light switch can create a distraction, which can result in a traffic accident and serious
personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down B for about three seconds to toggle the auto light switch on (auto
light switch on indicator displayed) and off (auto light switch on indicator not displayed).
x The auto light switch on indicator is on the display in all modes while the auto light switch is turned on.
E-34
E-35
Power Supply
This watch is equipped with a solar cell and a special rechargeable battery (secondary battery) that is
charged by the electrical power produced by the solar cell. The illustration shown below shows how you
should position the watch for charging.
Example:
Solar cell
Orient the watch so its face is pointing at a light source.
x The illustration shows how to position a watch with a
resin band.
x Note that charging efficiency drops when any part of the
solar cell is blocked by clothing, etc.
x You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly
if the face is even only partially covered.
Important!
x Storing the watch for long periods in an area where there is no light or wearing it in such a way that it
is blocked from exposure to light can cause rechargeable battery power to run down. Be sure that the
watch is exposed to bright light whenever possible.
x This watch uses a special rechargeable battery to store power produced by the solar cell, so regular
battery replacement is not required. However, after very long use, the rechargeable battery may lose
its ability to achieve a full charge. If you experience problems getting the special rechargeable battery
to charge fully, contact your dealer or CASIO distributor about having it replaced.
x Never try to remove or replace the watch’s special battery yourself. Use of the wrong type of battery
can damage the watch.
x All data stored in memory is deleted, and the current time and all other settings return to their initial
factory defaults whenever battery power drops to Level 5 (C: Charge) (page E-38) and when you have
the battery replaced.
x Turn on the watch’s Power Saving function (page E-51) and keep it in an area normally exposed to
bright light when storing it for long periods. This helps to keep the rechargeable battery from going
dead.
E-36
E-37
Battery Power Indicator and Power Recovery Mode indicator
The battery power indicator indicates you the current status of the rechargeable battery’s power.
Battery Power indicator
Level
Battery Power Indicator
Function Status
1 (H)
All functions enabled
2 (M)
All functions enabled
3 (L)
Auto and manual receive,
illumination, and beeper disabled
(Charge Soon Alert)
E-38
More than 40°
4 (C: Charge)
Except for timekeeping, all
functions and display indicators
disabled
5 (C: Charge)
All functions disabled
x The flashing LOW indicator at Level 3 (L) tells you that battery power is very low, and that exposure
to bright light for charging is required as soon as possible.
x At Level 5 (C: Charge), all functions are disabled and settings return to their initial factory defaults.
Once the battery reaches Level 2 (M) after falling to Level 5 (C: Charge), reconfigure the current time,
date, and other settings.
x Display indicators reappear as soon as the battery is charged from Level 5 (C: Charge) to Level 2 (M).
x The watch’s Home City code setting will change automatically to TYO (Tokyo) whenever the battery
drops to Level 5 (C: Charge). With this Home City code setting, the watch is configured to receive the
time calibration signals of Japan. If you are using the watch in North America or Europe, or China you
will need to change the Home City code setting to match your location whenever the battery drops to
Level 5 (C: Charge).
x Leaving the watch exposed to direct sunlight or some other very strong light source can cause the
battery power indicator to show a reading temporarily that is higher than the actual battery level. The
correct battery level should be indicated after a few minutes.
Power recovery
mode indicator
x Overuse of display illumination or the beeper can cause the RECOV
(Recover) indicator to appear in the upper display, which indicates that
the watch is in the battery power recovery mode. Face illumination, the
alarm, the countdown timer alarm, time signals, and all hand operations are
disabled in the power recovery mode.
The watch continues to keep time internally, so regular timekeeping and
function will resume as soon as battery power recovers to normal levels,
which is indicated when the RECOV indicator disappears.
x If RECOV appears frequently, it probably means that remaining battery
power is low. Leave the watch in bright light for some time to allow it to
charge.
E-39
Operation Guide 5163 (OC)
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving the watch in the areas
described below whenever charging its rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid crystal display to black out. The
appearance of the LCD should become normal again when the watch returns to a lower temperature.
Warning!
Leaving the watch in bright light to charge its rechargeable battery can cause it to become quite
hot. Take care when handling the watch to avoid burn injury.
The watch can become particularly hot when exposed to the following conditions for long periods.
On the dashboard of a car parked in direct sunlight
Too close to an incandescent lamp
Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled for up to about six months.
x The following table shows the amount of time the watch needs to be exposed to light each day in order
to generate enough power for normal daily operations.
Exposure Level (Brightness)
Approximate Exposure Time
Outdoor sunlight (50,000 lux)
8 minutes
Sunlight through a window (10,000 lux)
30 minutes
Daylight through a window on a cloudy day (5,000 lux)
48 minutes
Indoor fluorescent lighting (500 lux)
8 hours
x For details about the battery operating time and daily operating conditions, see the “Power Supply”
section of the Specifications (page E-56).
x Stable operation is promoted by frequent exposure to light.
Recovery Times
The table below shows the amount exposure that is required to take the battery from one level to the next.
Approximate Exposure Time
Exposure Level (Brightness)
Level 5
Level 4
Level 3
Level 2
Level 1
Outdoor sunlight (50,000 lux)
2 hours
21 hours
6 hours
Sunlight through a window
(10,000 lux)
6 hours
78 hours
21 hours
Daylight through a window on a
cloudy day (5,000 lux)
10 hours
126 hours
34 hours
Indoor fluorescent lighting (500 lux)
106 hours
–––
–––
x The above exposure time values are all for reference only. Actual required exposure times depend on
lighting conditions.
E-40
E-41
Timekeeping
Read This Before You Set the Time and Date!
You can adjust the Home City time and date in the Timekeeping Mode manually.
You also can simultaneously display the current time in one other time zone, by specifying a Dual Time
City.
x For information about selecting a Dual Time City, see “To specify the Dual Time City” (page E-47).
x Pressing D in the Timekeeping Mode will cycle the lower display between the screens shown below.
This watch is preset with a number of city codes, each of which represents the time zone where that city is
located. When setting the time, it is important that you first select the correct city code for your Home City
(the city where you normally use the watch). If your location is not included in the preset city codes, select
the preset city code that is in the same time zone as your location.
x Note that all of the times for the World Time City codes (page E-24) and Dual Time City (page E-47) are
displayed in accordance with the time and date settings you configure for the Timekeeping Mode.
Home City Date
Home City Time
Dual Time
D
D
To set the time and date manually
1. In the Timekeeping Mode, hold down A for about five seconds until the left
dial hand points to T1 and the city code flashes on the upper display. This is
the setting mode.
2. Use D and B to select the city code you want.
x Make sure you select your Home City code before changing any other
setting.
x For full information on city codes, see the “City Code Table” at the back
of this manual.
3. Press C to change the flashing screen content in the sequence shown below to select the other
settings.
D
City Code
DST
12/24-Hour Format
Seconds
Hour
Power Saving
Day
Month
Year
Minutes
E-42
E-43
4. When the timekeeping setting you want to change is flashing, use D or B to change it as described
below.
Screen:
To do this:
Do this:
Change the city code.
Use D (east) and B (west).
Cycle between Auto DST (
), Daylight Saving
Time (
) and Standard Time (
).
Toggle between 12-hour (
timekeeping.
Reset the seconds to
Press D.
) and 24-hour (
)
12-hour and 24-hour timekeeping
x With the 12-hour format, the PM (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 for times in the range of midnight to 11:59 a.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.
Press D.
Press D.
.
Change the hour and minutes.
Use D (+) and B (–).
Daylight Saving Time (DST)
Change the year, month, or day.
Toggle between Power Saving on (
) and off (
).
x Auto DST (
) can be selected only while LIS, LON, MAD, PAR, ROM, BER,
STO, ATH, MOW, TPE, SEL, TYO, HNL, ANC, YVR, LAX, YEA, DEN,
MEX, CHI, MIA, YTO, NYC, YHZ, or YYT is selected as the Home City code. For
more information, see “Daylight Saving Time (DST)” below.
x The day of the week is displayed automatically in accordance with the date (year, month, and day)
settings.
Press D.
5. Press A twice to exit the setting mode.
x For details about the Daylight Saving Time setting, see “To change the Daylight Saving Time
(summer time) setting” (page E-46). For information about Power Saving, see “To turn Power Saving
on and off” (page E-51).
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.
The time calibration signals transmitted from Mainflingen (Germany), Anthorn (England), and Fort Collins
(the United States) include both Standard Time and DST data. When the Auto DST setting is turned on,
the watch switches between Standard Time and DST (Daylight Saving Time) automatically in accordance
with the signals.
x Though the time calibration signals transmitted by the Fukushima and Fukuoka/Saga, Japan
transmitters include summer time data, summer time currently is not implemented in Japan (as of
2010).
E-44
E-45
x The default DST setting is Auto DST (
) whenever you select LIS, LON, MAD, PAR,
ROM, BER, STO, ATH, MOW, TYO, ANC, YVR, LAX, YEA, DEN, MEX,
CHI, MIA, YTO, NYC, YHZ, or YYT as your Home City code.
x If you experience problems receiving the time calibration signal in your area, it probably is best to
switch between Standard Time and Daylight Saving Time (summer time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A for about five seconds until the left
dial hand points to T1 and the city code flashes on the upper display. This is
the setting mode.
2. Press C. This will display the DST setting screen.
Dual Time
Dual Time lets you display the current time in another time zone called your “Dual Time City”, in addition
to your Home City’s current time. This feature is very handy for business professionals and others who
need to keep track of the current time in two different time zones.
x For information about how to display the current time in the Dual Time City in the lower display, see
page E-42.
To specify the Dual Time City
1. In the Timekeeping Mode, hold down A for about five seconds until the left
Currently selected
dial hand points to T1 and the city code flashes on the upper display. This is
Dual Time City
the setting mode.
2. Press A again. The left dial hand will move to T2 and the current Dual Time
City code will start to flash on the upper display. This is the Dual Time City
selection screen.
3. Use D to cycle through the DST settings in the sequence shown below.
Auto DST (
)
DST off (
)
DST on (
)
3. Use D (east) and B (west) to scroll through the available city codes.
x See the “City Code Table” at the back of this manual for information about
city codes.
DST indicator
4. When the setting you want is selected, press A twice to exit the setting mode.
x The DST indicator appears to indicate that Daylight Saving Time is turned on.
E-46
4. Press A to exit the setting mode.
Left dial hand
E-47
Operation Guide 5163 (OC)
Correction of Hand Home Positions
The hour and minute hands of the watch can be thrown off by exposure to strong magnetism or impact.
The watch is designed to perform hour and minute hand correction automatically every hour in order to
correct variation within the range of –55 minutes to +5 minutes.
x You can trigger auto hour and minute hand position correction manually, if you want (page E-48).
x If the variation is greater than –55 minutes to +5 minutes, you can trigger auto hand position correction
manually or perform correction of the hour and minute hand home positions manually (page E-49).
x If the dial hands are off, you will need to correct their home positions manually (page E-49).
To trigger auto correction of hand home positions
In the Timekeeping Mode, hold down D for about six seconds, until H-SET
starts flashing on the upper display.
x Note that H-SET will appear on the upper display about three seconds after
you depress D, but you should not release the button until H-SET starts
flashing. The flashing H-SET indicates that auto hour and minute hand home
position correction has started.
x Auto hour and minute hand home position correction takes about three and
a half minutes to complete. Do not perform any other watch operation during
that time.
To adjust the home positions manually
1. In the Timekeeping Mode, hold down D for about three seconds, until
Correct dial hand
H-SET appears on the upper display and Sub starts to flash on the lower
positions
display.
x The dial hands are in their correct home positions when the long left dial
hand moves to C (Charge) and the right dial hand moves to 12. If they
don’t, use B to adjust the left dial hand position and D to adjust the right
dial hand position.
Correct hour and minute
hand positions
2. After confirming that both dial hands are in their correct home positions,
press C.
x This will change to hour hand and minute hand home position manual
correction.
x The hour and minute hands are in their correct home positions if they
are at 12 o’clock. If they are not, use D (+) and B (–) to adjust their
positions as required.
x Pressing C here will return to the setting at the beginning of step 2.
3. After everything is the way you want, press A to return to the Timekeeping
Mode.
x After you complete the home position adjustment procedure, place the
watch in a location that allows for good time calibration signal reception,
and then perform a manual receive operation. See “To perform manual
receive” (page E-20) for more information.
x The watch will return to the Timekeeping Mode automatically after auto correction is complete.
x You will not be able to trigger auto correction while the watch is in the Countdown Timer Mode or while
a countdown timer operation is in progress.
x To interrupt an ongoing auto correction, press D. This will return to the Timekeeping Mode.
E-48
E-49
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.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A for about five seconds until the left
dial hand points to T1 and the city code flashes on the upper display. This is
the setting mode.
2. Press C nine times until PS appears in the upper display and a flashing or
appears in the lower display. This is the Power Saving
/
screen.
Power Saving Function
When turned on, the Power Saving function enters a sleep state automatically
whenever the watch is left in an area for a certain period where it is dark. The
table below shows how watch functions are affected by the Power Saving
function.
Elapsed Time in Dark
60 to 70 minutes
6 or 7 days
Hands and Display
Left dial hand: PS; Right dial
hand: “12”; Other hands:
Normal; Display: Blank
Left dial hand: PS; Other
hands: Stopped at 12 o’clock;
Display: Blank
Operation
All functions enabled,
except for displays
Auto receive, beeper tone,
illumination, and display
disabled
x Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
x The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch is already in the
sleep state when 6:00 AM arrives, however, it will remain in the sleep state.
To recover from the sleep state
Perform any one of the following operations.
x Move the watch to a well-lit area.
x Press any button.
x Angle the watch towards your face for reading (page E-35).
3. Press D to toggle Power Saving on (
Transmitters
The time calibration signal received by this watch depends on the currently selected Home City (page
E-11).
x When a U.S. time zone is selected, the watch receives the time calibration signal transmitted from the
United States (Fort Collins).
x When a Japanese time zone is selected, the watch receives the time calibration signals transmitted
from Japan (Fukushima and Fukuoka/Saga).
x When a European time zone is selected, the watch receives the time calibration signals transmitted
from Germany (Mainflingen) and England (Anthorn).
x When a China time zone is selected, the watch receives the time calibration signal transmitted from
China (Shangqiu City).
x When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW (which can receive
both the Anthorn and Mainflingen signals), the watch first tries to pick up the signal it last received
successfully. If that fails, it tries the other signal. For the first receive after you select your Home City,
the watch tries the nearest signal first (Anthorn for LIS, LON, Mainflingen for MAD, PAR, ROM, BER,
STO, ATH, and MOW).
On/Off status
x Strong electrostatic charge can cause the time setting to be thrown off.
x The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in
the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to
seasonal atmospheric changes or the time of day may change the reception range of the signal and
make reception temporarily impossible.
x Even if the time calibration signal is received properly, certain conditions can cause the time setting to
be off by up to one second.
x The current time setting in accordance with the time calibration signal takes priority over any time
settings you make manually.
x The watch is designed to update the date and day of the week automatically for the period January 1,
2000 to December 31, 2099. Setting of the date by the time calibration signal cannot be performed
starting from January 1, 2100.
x This watch can receive signals that differentiate between leap years and non-leap years.
E-51
Auto Return Features
x If you leave the watch with a flashing setting on the display for two or three minutes without performing
any operation, the watch will exit the setting mode automatically.
x The watch will return to the Timekeeping Mode automatically if you do not perform any operation for
two or three minutes in the Alarm Mode.
High-Speed Movement
x The D and B buttons are used to change the hand setting in various setting modes. In most cases,
holding down these buttons will start high-speed movement of the applicable hand(s).
Initial Screens
When you enter the World Time Mode or Alarm Mode, the data you were viewing when you last exited the
screen will appear first.
Timekeeping
x Resetting the seconds to
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
without changing the minutes.
x The year can be set in the range of 2000 to 2099.
x 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 when battery power drops
to Level 5 (C: Charge) (page E-38).
x The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in
accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time
setting.
E-52
Illumination Precautions
x Illumination may be hard to see when viewed under direct sunlight.
x Illumination turns off automatically whenever an alarm sounds.
x Frequent use of illumination runs down the battery.
Auto light switch precautions
x 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.
More than 15 degrees x 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
too high
ground.
x Illumination turns off in about one second, even if you keep the watch pointed
towards your face.
x 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 toward 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.
x 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.
x 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.
E-54
).
Radio-controlled Atomic Timekeeping Precautions
E-50
x Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year,
month, day), certain signal conditions can limit reception to time data only.
x If you are in an area where proper time calibration signal reception is impossible, the watch keeps the
time with the precision noted in “Specifications”.
x If you have problems with proper time calibration signal reception or if the time setting is wrong after
signal reception, check your current city code, and DST (Daylight Saving Time) settings (page E-46).
x The Home City setting reverts to the initial default of TYO (Tokyo) whenever the battery power drops
to Level 5 (C: Charge) or when you have the rechargeable battery replaced. If this happens, change
the Home City to the setting you want (page E-11).
) and off (
4. Press A twice to exit the setting mode.
E-53
Specifications
Accuracy at normal temperature: ±15 seconds a month (with no signal calibration)
Digital Timekeeping: Hour, minutes, seconds, p.m. (PM), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 48 city codes); Standard Time/Daylight Saving Time
(summer time); Simultaneous Home Time City/Dual Time City indication
Analog Timekeeping: Hour, minutes (hand moves every 10 seconds)
Time Calibration Signal Reception: Auto receive 6 times a day (Remaining auto receives cancelled as
soon as one is successful) (five times for the China signal); Manual
receive
Receivable Time Calibration Signals: Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz);
Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz);
Fort Collins, Colorado, the United States (Call Sign: WWVB,
Frequency: 60.0 kHz); Fukushima, Japan (Call Sign: JJY,
Frequency: 40.0 kHz); Fukuoka/Saga, Japan (Call Sign: JJY,
Frequency: 60.0 kHz); Shangqiu City, Henan Province, China
(Call Sign: BPC, Frequency: 68.5 kHz)
World Time: 48 cities (29 time zones)/and Coordinated Universal Time
Other: Daylight Saving Time/Standard Time; Home City/World Time City Swapping
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99"
Measuring modes: Elapsed time, split time, two finishes
E-55
Operation Guide 5163 (OC)
Countdown Timer:
Measuring unit: 1 second
Input range: 1 minute to 60 minutes (1-minute increments)
Other: Auto-repeat timing
Alarms: Four one-time alarms; one snooze alarm; Hourly Time Signal
Illumination: LED (light-emitting diode); Auto Light Switch (Full Auto LED Light operates only in the dark)
Other: Power Saving; Auto hour and minute hand home position correction each hour
Power Supply: Solar cell and one rechargeable battery
Approximate battery operating time: 6 months (from full charge to Level 5 (C: Charge)) under the
following conditions:
– Watch not exposed to light
– Internal timekeeping
– Display on 18 hours per day, sleep state 6 hours per day
– 1 illumination operation (1.5 seconds) per day
– 10 seconds of alarm operation per day
– 4 minutes of signal reception per day
City Code Table
Frequent use of illumination runs down the battery. Particular care is required when using the auto light
switch (page E-55).
E-56
L-1
City Code Table
City Code
City
UTC Offset/
GMT Differential
City Code
PPG
Pago Pago
–11
UTC
HNL
Honolulu
–10
ANC
Anchorage
–9
L-2
YVR
Vancouver
LAX
Los Angeles
YEA
Edmonton
DEN
Denver
MEX
Mexico City
CHI
Chicago
MIA
Miami
YTO
Toronto
NYC
New York
SCL
Santiago
YHZ
Halifax
–8
–7
–6
–5
–4
City
UTC Offset/
GMT Differential
City Code
LIS
Lisbon
0
LON
London
RGN
MAD
Madrid
PAR
Paris
ROM
Rome
City
UTC Offset/
GMT Differential
DEL
Delhi
+5.5
DAC
Dhaka
+6
Yangon
+6.5
Bangkok
+7
BKK
+1
SIN
Singapore
HKG
Hong Kong
BER
Berlin
BJS
Beijing
STO
Stockholm
TPE
Taipei
ATH
Athens
CAI
Cairo
JRS
Jerusalem
MOW
Moscow
JED
Jeddah
THR
Tehran
+2
SEL
Seoul
TYO
Tokyo
ADL
Adelaide
+8
+9
+9.5
GUM
Guam
SYD
Sydney
+3.5
NOU
Noumea
+11
WLG
Wellington
+12
+3
YYT
St. Johns
–3.5
DXB
Dubai
+4
RIO
Rio De Janeiro
–3
KBL
Kabul
+4.5
RAI
Praia
–1
KHI
Karachi
+5
x Based
on data as of July 2010.
x The
rules governing global times (UTC offset
and GMT differential) and summer time are
determined by each individual country.
+10
L-3
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