> HOW TO USE > How to use the rotating bezel with 24-hour scale (For models with rotating bezel having 24-hour scale)

How to use the rotating bezel with 24-hour scale (For models with rotating bezel having 24-hour scale)

By turning the rotating bezel, another time can be read at the 24-hour hand.

In the case of 24-hour hand being set to 24 hours of the hour and minute hands

<The direction and the amount to turn the rotating bezel can be determined by the following method>

[The direction and the amount to turn the rotating bezel] E
is calculated as,
[Time difference from UTC of 24-hour hand, C] - [Time difference from UTC of the region you wish to know, D]

E = C - D

In this example, the 24-hour hand indicates Japan time, and therefore, C = +9.

  1. As an example, if the time of a region you wish to know belongs to the time zone of UTC, the time difference from UTC is “0” and hence,
    D = 0
    E = C - D = (+9) - (0) = +9
    UTC can be read as “1:00” on the rotating bezel scale.

  2. If E is a positive number “+”, turn the rotating bezel clockwise. If it is a negative number “-”, turn it counterclockwise.

    4R34_How to use bezel with 24-hour-1 + How to use bezel with 24-hour-1

    24-hour hand

    1:00

  3. As another example, if you wish to know the time of the region “Los Angeles”, the time difference from UTC is “-8 hours”, so D = -8
    E = C - D = (+9) - (-8) = +17
    Turn the rotating bezel 17 hours clockwise. (Result: Same as the counterclockwise rotation of 7 hours)
    Los Angeles time can be read as “17:00”.

  4. When this intended usage is no longer needed, please return the original position “24” mark of rotating bezel to 12 o’clock position.

    4R34_How to use bezel with 24-hour-2 + How to use bezel with 24-hour-2

    24-hour hand

    17:00

In the case of 24-hour hand being set to different time zone

Three different time zones can be read by turning the rotating bezel.

【Example】 When displaying 10:08 AM Japan time with the hour and minute hands, and displaying Paris time with the 24-hour hand,

Time difference from UTC of “Paris” where the 24-hour hand is set, C = +1
Time difference from UTC of “Bangkok” that you wish know from now on, D = +7
E=C-D= (+1) - (+7) = -6
Turn the rotating bezel counterclockwise and set.

4R34_How to use bezel with 24-hour-3 + How to use bezel with 24-hour-3

24-hour hand

Bangkok
“8 AM”

Paris
“2 AM”

Turn counterclockwise for 6 gradations in
24-hour format:
6 hours minus

List of time zone differences in major regions of the world

City display

Name of the representing cities

Time difference from Japan

Time difference from GMT

Other cities

WLG

Wellingtonstar

+3 hours

+12 hours

Fiji islandsstar, Aucklandstar

NOU

Noumea

+2 hours

+11 hours

Solomon Islands

SYD

Sydneystar

+1 hour

+10 hours

Guam Island, Khabarovsk

TYO

Tokyo

±0 hour

+9 hours

Seoul, Pyongyang

HKG

Hong Kong

-1 hour

+8 hours

Manila, Beijing, Singapore

BKK

Bangkok

-2 hours

+7 hours

Jakarta

DAC

Dhaka

-3 hours

+6 hours

 

KHI

Karachi

-4 hours

+5 hours

Tashkent

DXB

Dubai

-5 hours

+4 hours

 

JED

Jeddah

-6 hours

+3 hours

Mecca, Nairobi, Istanbul

CAI

Cairo

-7 hours

+2 hours

Athensstar

PAR

Parisstar

-8 hours

+1 hour

Romestar, Amsterdamstar

GMT

Londonstar

-9 hours

±0 hour

 

PDL

Azores Islandsstar

-10 hours

-1 hour

 

RIO

Rio de Janeirostar

-12 hours

-3 hours

 

SDQ

Santo Domingo

-13 hours

-4 hours

 

NYC

New Yorkstar

-14 hours

-5 hours

Washingtonstar, Montrealstar

CHI

Chicagostar

-15 hours

-6 hours

Mexico Citystar

DEN

Denverstar

-16 hours

-7 hours

Edmontonstar

LAX

Los Angelesstar

-17 hours

-8 hours

San Franciscostar

ANC

Anchoragestar

-18 hours

-9 hours

 

HNL

Honolulu

-19 hours

-10 hours

 

MDY

Midway Island

-20 hours

-11 hours

 

In the regions marked with star, daylight saving time is introduced. (As of Oct, 2018)

Daylight saving time, being defined as time difference +1 hour, is a system that advances the time by 1 hour during summer time to prolong the daylight hours.

Time difference and daylight saving time are subject to change depending on the conditions of the respective countries or regions.