Seiko SSE089, Instructions Manual

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Time zone

  Time zone

Based on Coordinated Universal Time (UTC), the standard time commonly used is adopted by 

countries and regions around the world. The standard time is determined by each country or 

region, and the region where the same standard time is adopted is referred to as the time zone, 

and presently, the time zone is divided into 40 zones as of March 2015.

  DST (Daylight Saving Time)

Depending on the area, DST (Daylight Saving Time) is individually set. 
Daylight Saving Time, or summer time, is a system to lengthen daylight time by advancing 1 

hour when daylight time is longer during summer. Daylight saving time has been adopted in 

about 80 countries, mainly in Europe and North America. The adoption and duration of daylight 

saving time varies depending on the country. 



 Daylight Saving Time is subject to change due to circumstances of the country or region.

  Coordinated Universal Time (UTC)

UTC is the universal standard time coordinated through an international agreement. UTC is the 

primary time standard for recording time around the world.  The time obtained by adding a leap 

second to the “International Atomic Time (TAI)” is determined based on the atomic clock around 

the world. It is coordinated in order to compensate for deviations from universal time (UT) 

which is astronomically determined by the UTC.

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Time zone display and list of time zones around 

the world

The following list shows the relationship between displays of the bezel and dial ring and time 

difference from the UTC.
Please refer to the second hand positions below to set the time zone or to check the time zone 

setting.

DST (Daylight Saving Time) is used in time zones with a 



 mark. 

In the Lord Howe Island time zone in Australia with a   mark, the time is advanced by 30 

minutes while Daylight Saving Time (Summer Time) is in effect.
This watch corresponds to DST in the Lord Howe Island time zone.



 The time zone of each region and DST (Daylight Saving Time) are as of March 2015. 

 

The displays of city code and the time difference from UTC are subject to 

change depending on model. 

 

“·” between figures of the display of time difference shows that there is a 

time zone in that place.

Display of time zone

Display of time difference

Representative city names…28 cities among the total of 40 time zones 

around the world
Time diff14 hours ~ –12 hours