What is the time difference between Tokyo and Seoul?

Seoul is 0 minutes behind Tokyo. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Seoul from Tokyo?

Between 09:00–18:00 in Tokyo, which is 09:00–18:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Tokyo observe daylight saving time?

No. Tokyo stays on UTC+9 all year, so its clocks never move.

Does Seoul observe daylight saving time?

No. Seoul stays on UTC+9 all year, so its clocks never move.

If it is midday in Tokyo, what time is it in Seoul?

It is 12:00 in Seoul, on the same calendar date. That holds for the current offsets; it does not change through the year, because neither city moves its clocks.

Which time zones do Tokyo and Seoul use?

Tokyo uses Asia/Tokyo, currently UTC+9, and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Tokyo time to Seoul time

Seoul is 0 minutes behind Tokyo right now, so midday in Tokyo lands in the afternoon in Seoul.

Convert a time

From

Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Every hour of a day in Tokyo, and what the clock reads in Seoul at that same moment.

Tokyo	Seoul
00:00	00:00
01:00	01:00
02:00	02:00
03:00	03:00
04:00	04:00
05:00	05:00
06:00	06:00
07:00	07:00
08:00	08:00
09:00	09:00
10:00	10:00
11:00	11:00
12:00	12:00
13:00	13:00
14:00	14:00
15:00	15:00
16:00	16:00
17:00	17:00
18:00	18:00
19:00	19:00
20:00	20:00
21:00	21:00
22:00	22:00
23:00	23:00

Daylight saving time

Both cities keep one offset all year. Whatever difference holds today still holds in six months.

Tokyo

Does not observe daylight saving time

Standard: UTC+9

Seoul

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

You have 9 hours of shared working time: 09:00–18:00 in Tokyo, which is 09:00–18:00 in Seoul.

Tokyo 09:00–18:00Seoul 09:00–18:00

Reference

The underlying data, in case you need to put it in a calendar invitation or a configuration file.

	Tokyo	Seoul
IANA zone	Asia/Tokyo	Asia/Seoul
Abbreviation	UTC+9	UTC+9
Standard offset	UTC+9	UTC+9
Daylight offset	—	—
Clock changes this year	0	0
Country	Japan	South Korea

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between Tokyo and Seoul?: Seoul is 0 minutes behind Tokyo. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Seoul from Tokyo?: Between 09:00–18:00 in Tokyo, which is 09:00–18:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Tokyo observe daylight saving time?: No. Tokyo stays on UTC+9 all year, so its clocks never move.
Does Seoul observe daylight saving time?: No. Seoul stays on UTC+9 all year, so its clocks never move.
If it is midday in Tokyo, what time is it in Seoul?: It is 12:00 in Seoul, on the same calendar date. That holds for the current offsets; it does not change through the year, because neither city moves its clocks.
Which time zones do Tokyo and Seoul use?: Tokyo uses Asia/Tokyo, currently UTC+9, and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.