World Time; Signal Reception Precautions - Casio 5455 Operation Manual

Signal Reception
Precautions
When the watch is unable to adjust its time
●
in accordance with a calibration signal for
some reason, average timekeeping
accuracy is within ±15 seconds per month.
GPS signal and time calibration signal
●
reception will not be possible under any of
the watch conditions described below.
While battery power is low
ー
While the watch is in the Airplane Mode,
ー
Stopwatch Mode, Timer Mode, or Alarm
Mode
When power saving is at Level 2 (GPS
ー
signal reception also is not possible at
Level 1.)
While the crown is pulled out
ー
Timer countdown operation in progress
ー
While the temperature of the watch is less
ー
than approximately -10°C (14°F) or
greater than approximately 60°C (140°F)
Note that an internal decoding process the
●
watch performs after it receives a signal may
cause the time setting to be slightly off (by
less than one second).
If the receive operation is successful, the
●
time and day settings will be adjusted
automatically in accordance with the Home
City (time zone) and summer time settings.
Summer time will not be applied correctly in
the cases described below.
When the summer time start date and
ー
time, end date and time, or other rules are
changed by authorities
When position information cannot be
ー
acquired correctly
When position information can be
ー
acquired, but it is wrong because the
watch is located near a time zone
boundary, etc.
As of December 2014, China does not
●
observe summer time. If China starts to
observe summer time in the future, the time
displayed by the watch for China may not be
correct.
Operation Guide 5455
Using the Watch on an
Aircraft
Enter the Airplane Mode when in an aircraft or
anywhere else where GPS or time calibration
signal reception is restricted.
Entering the Watch Airplane
Mode
Holding down (C) for about four seconds to
enter the watch's Airplane Mode. The mode
hand will move to the Airplane mark.
Airplane mark
Each time (C) is held down for about four
●
seconds, the watch enters or exits the
Airplane Mode.

World Time

World Time lets you look up the current time
in any one of 27 cities and 40 time zones
around the globe.
Getting ready
Enter the Timekeeping Mode.
Navigating Between Modes
l
Selecting a Time Zone
Use the procedure in this section to select a
World Time city (time zone). If you are in an
area that observes summer time, you can also
enable or disable summer time.
Note
The initial factory default summer
●
time setting for all cities (time zones)
is "AT (AUTO)". In many cases, the
"AT (AUTO)" setting lets you use the
watch without switching between
summer time and standard time.
1.
Pull out the crown to the first click.
The hands of the watch will move to the
current time in the currently selected
World Time City.
Small 24-hour hand
Time zone
Small hour hand
Small minute hand
The mode hand indicates the acquisition
status for the currently selected World
Time location.
"P": Available
"N": Not available
2.
Rotate the crown to change the time zone.
The small hour hand and small minute
hand indicate the current time in the
selected time zone.
Hold down (B) for about one second to
●
display UTC (Coordinated Universal
Time) time.
World Time hour (24-hour)
World Time hour and minute
Mode
hand
Crown
Crown
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