Manual Casio 5445 - GST-S100 (page 3 of 8) (English)

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Operation Guide 5445

E-29

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A for about

two seconds until ADJ appears in the right digital dial.

When you release A, the city code and city name will

scroll across the right digital dial. This is the setting

mode.

x Whenever you enter a setting mode, the analog hands

will automatically move to positions that allow easier

viewing of the digital dials. This is the setting mode.

2. Press C to enter the DST setting mode.

3. Press D to toggle the DST setting between Daylight

Saving Time (ON) and Standard Time (OFF).

DST indicator

E-28

5. After the setting is the way you want, press A to return to the Timekeeping

Mode.

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

x Exiting a setting mode will normally cause the hands to return to regular

timekeeping automatically. However, if you manually move the hands (page

E-61) and then enter a setting mode, they will not return to regular timekeeping

automatically when you exit the setting mode. In this case, you will need to

return the hands to their normal positions manually (page E-62).

Note

x After you specify a city code, the watch will use UTC* offsets in the World Time

Mode to calculate the current time for other time zones based on the current time

in your Home City.

* Coordinated Universal Time, the world-wide scientiﬁ c standard of timekeeping.

The reference point for UTC is Greenwich, England.

E-27

2. Use D (East) and B (West) to scroll through the city

codes in the right digital dial until the one you want to

use as your Home City is displayed.

3. Press C so the DST indicator is ﬂ ashing in the left

digital dial, which indicates the DST setting mode.

4. Press D to toggle the DST setting between Daylight

Saving Time (ON) and Standard Time (OFF) in the right

digital dial.

x Note that you cannot switch between standard time

and daylight saving time (DST) while UTC is selected

as your Home City.

DST indicator

E-26

Conﬁ guring Home City Settings

There are two Home City settings: actually selecting the Home City, and selecting

either standard time or daylight saving time (DST).

To conﬁ gure Home City settings

1. In the Timekeeping Mode, hold down A for about

two seconds until ADJ appears in the right digital dial.

When you release A, the city code and city name will

scroll across the right digital dial. This is the setting

mode.

x The watch will exit the setting mode automatically if

you do not perform any operation for about two or

three minutes.

x For details about city codes, see the “City Code Table” at the back of this

manual.

x Whenever you enter a setting mode, the analog hands will automatically move to

positions that allow easier viewing of the digital dials.

City code

E-25

Timekeeping

Use the Timekeeping Mode to set and view the current

time and date.

x If you have an alarm time set, the right digital dial will

change to show a countdown of the ﬁ nal 60minutes

until the alarm time is reached.

x When viewing a digital dial, you can move the analog

hands for an unobstructed view.

x Press A to toggle the left digital dial between month/

day and hour/minutes.

Hour

Minutes

Day of week

Seconds

Month Day

E-24

General Functions (All Modes)

The functions and operations described in this section can be used in all of the

modes.

Auto Return Features

x The watch returns to the Timekeeping Mode automatically if you do not perform

any button operation for two or three minutes in the Alarm Mode.

x If you leave the watch in a setting mode (with ﬂ ashing digits) for two or three

minutes without performing any operation, the watch will exit the setting mode

automatically.

Initial Screens

When you enter the World Time or Alarm Mode, the data you were viewing when

you last exited the mode appears ﬁ rst.

Scrolling

The B and D buttons are used in the setting mode to scroll through data. In most

cases, holding down these buttons during a scroll operation scrolls through the

data at high speed.

E-23

Countdown Timer Mode

Alarm Mode Stopwatch Mode

E-22

Selecting a Mode

x The illustration below shows which buttons you need to press to navigate between

modes.

x To return to the Timekeeping Mode from any other mode, hold down C for at

least four seconds.

Timekeeping Mode World Time Mode

C C

E-21

Mode Reference Guide

Your watch has “ﬁ ve modes”. The mode you should select depends on what you

want to do.

To do this: Enter this mode: See:

x View the current date in the Home City

x Conﬁ gure Home City and daylight saving time (DST)

settings

x Conﬁ gure time and date settings

x Switch between 12-hour and 24-hour timekeeping

x Display an alarm countdown

Timekeeping Mode E-25

View the current time in one of 48 cities (31 time zones)

around the globe

World Time Mode E-36

Use the stopwatch to measure elapsed time Stopwatch Mode E-39

Use the countdown timer Countdown Timer Mode E-42

Set an alarm time Alarm Mode E-45

E-20

x The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch

is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep

state.

x The watch will not enter a sleep state while it is in the Stopwatch Mode or

Countdown Timer Mode.

To recover from the sleep state

Move the watch to a well-lit area or press any button.

I cant get the hands to agree with the digital reading. Yes I have the correct city
When I adjust the hands manually they randomly move back when I try to set them Submitted on 5-4-2023 at 01:35
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Casio 5445 - GST-S100 Manual

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