Tokyo to SeoulTime Converter

Tokyo to Seoul: the time difference

On 2026-10-05 at 9:00 AM in Tokyo, it is 9:00 AM in Seoul (Monday, October 5, 2026). Seoul is the same time as Tokyo.

Tokyo keeps Japan Standard Time throughout the year. A repeating call with a city that changes clocks can still move by one hour in Tokyo even though Tokyo itself does not change. Seoul and Tokyo currently share the same UTC offset. Calls with North America commonly cross midnight, so include the weekday when sharing a Seoul meeting time.

24-hour conversion table

Source date: 2026-10-05 in Tokyo. Each row is a real instant; the destination date is shown explicitly. Repeated hours appear twice and nonexistent hours are labeled.

Does the time difference change during 2026?

The calculated difference remains the same time throughout the sampled year. This does not necessarily mean neither city changes its clocks: their changes may stay synchronized.

Ranges sample each date at 12:00 UTC. A transition can occur partway through the first or last date. Use the converter for the precise instant. Calculated from this build’s Intl time-zone rules; future legislation may change them.

Tokyo: No UTC offset change is found in the 2026 reference data. The offset is UTC+09:00.

Seoul: No UTC offset change is found in the 2026 reference data. The offset is UTC+09:00.

Best time to call Seoul from Tokyo

For a one-hour call on 2026-10-05, these example start times fit a 9 AM–6 PM workday in both cities. A shared workday is not a guarantee that a person is free.

Customize working hours for Tokyo and Seoul.

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