List of time zone differences in major regions of the world

Refer to the table below to set the time difference area in the Time Difference Adjustment mode.

When setting a time difference for a region where no receivable official standard frequency is mentioned in the table below, the radio signal reception function will not work.

To use Daylight Saving Time (DST) where this is observed, select the time zones with a △ mark in the Reception frequency columns.

(As of August 2020)

Time difference setting seconds hand position	Time difference from UTC	Time zone representative city	Reception frequency
0 seconds	±0 hours	London	DCF77
1 second	+1 hour	Paris / Berlin	DCF77
2 seconds	+2 hours	Cairo	DCF77 △
3 seconds	+3 hours	Jeddah	-
4 seconds	+4 hours	Dubai	-
5 seconds	+5 hours	Karachi	-
6 seconds	+6 hours	Dhaka	-
7 seconds	+7 hours	Bangkok	-
8 seconds	+8 hours	Beijing/Hongkong	BPC
9 seconds	+9 hours	Tokyo	JJY
10 seconds	+10 hours	Sydney	JJY △
11 seconds	+11 hours	Noumea	-
12 seconds	+12 hours	Wellington	-
13 seconds	+13 hours	Nuku’alofa (Tongatapu)	-
49 seconds	-11 hours	Midway Island	-
50 seconds	-10 hours	Honolulu	-
51 seconds	-9 hours	Anchorage	-
52 seconds	-8 hours	Los Angeles	WWVB
53 seconds	-7 hours	Denver	WWVB
54 seconds	-6 hours	Chicago	WWVB
55 seconds	-5 hours	New York	WWVB
56 seconds	-4 hours	Santo Domingo	WWVB △
57 seconds	-3 hours	Rio de Janeiro	-
58 seconds	-2 hours	Fernando de Noronha	-
59 seconds	-1 hour	Azores Islands	-

Time zones and time differences

There are time differences around the world based on “Coordinated Universal Time (UTC).”

There are 24 regions (Time Zones) around the world with a time difference of one hour. This system has been adopted internationally by setting the total time difference around the world as 24 hours.

Further, Daylight Saving Time (DST) is individually adopted in countries and regions.

[What is UTC (Coordinated Universal Time)?]

UTC is the universal standard time coordinated through international agreement. It is used as the official time around the world. UTC is a time coordinated by adding leap seconds to the “International Atomic Time (TAI)” determined from atomic clocks in the world, in order to correct the deviation from the astronomically defined universal time (UT).

[What is summer time (DST)?]

Summer time is Daylight Saving Time (DST).

Advance the watch one hour to prolong daytime during longer daylight hours in 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 (DST) vary depending on the country.

Time differences between regions and daylight saving time may change due to circumstances of a country or region.

In some regions, time zones that differ from UTC by half- or quarter-hour time differences are established. (For example, some parts of India)

Each indication may differ depending on the model (design) of the watch.

Time difference adjustment Q&A

When returning to Japan from overseas, is the time automatically set to Japan time?

Just moving does not adjust your watch to Japanese local time.

When wearing a watch in Japan, set to Japan time by use of the time difference adjustment function.

The hands stop during operation of time difference setting, therefore, does time lag occur?

The internal circuit stores the time, therefore, no time lag occurs.

When a time difference for regions out of the radio signal reception range is set, the watch will not receive a radio signal. How is the accuracy of the watch at that time?

The watch has an accuracy of a normal quartz watch in that case. (Monthly rate: ±15 seconds)

How is adjustment made to a local time with a time difference of 15 minutes or 30 minutes?

The time can be adjusted on a 1 hour basis by use of the time difference adjustment function. When adjusting to a local time with a time difference of 15 minutes or 30 minutes, refer to
How to manually set the time (1B21: non date-displaying model)
How to manually set the time (1B22 / 1B32: date-displaying models)