Does Seoul observe daylight saving time?

No. Seoul stays on KST (UTC+9) all year, so its clocks don't change.

Does Tokyo observe daylight saving time?

No. Tokyo stays on JST (UTC+9) all year, so its clocks don't change.

What time is it in Tokyo when it's 9 AM in Seoul?

9:00 AM in Tokyo, on the same day.

Seoul to Tokyo Meeting Planner

Tokyo and Seoul are on the same time right now. Their working days overlap for 8 hours today.

Seoul · South Korea

11:42 PM

Sat, Oct 17 · KST

Tokyo · Japan

11:42 PM

Sat, Oct 17 · JST

Best Meeting Times Between Seoul and Tokyo

9:00 AM to 5:00 PM in Seoul (9:00 AM to 5:00 PM in Tokyo). That's when both cities are inside working hours, 9 AM to 5 PM, giving 8 hours of overlap today.

Who's meeting

2 of 4 places

SeoulOrganizerSouth Korea ·11:42PMnow
TokyoJapan ·11:42PMnow

Add a city

Add up to 4 places by city, country, time zone or abbreviation, like Tokyo, India or JST. Press "/" to jump here.

Date in Seoul

Working hours, everywhere

Best times to meet

Saturday, October 17, 2026, in Seoul time.

1:00PMBest · OptimalWorking hours in Seoul (13:00) and Tokyo (13:00).
12:00PMOption 2 · OptimalWorking hours in Seoul (12:00) and Tokyo (12:00).
2:00PMOption 3 · OptimalWorking hours in Seoul (14:00) and Tokyo (14:00).

The whole day

Pick any slot in the Fit row, or use the arrow keys there, to make it the meeting time.

Each column is a one-hour slot of the first place's day. The Fit row grades how well the slot suits everyone; each row shows the local time and whether it's working hours there.
Fit
SeoulUTC+9
TokyoUTC+9
UTC	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14

Working hours (09–17)Just outside (07–09, 17–20)Late evening (20–23)NightFit: optimal, good, possible, poor

Your meeting

Seoul1:00 PM UTC+9Sat, Oct 17
Tokyo1:00 PM UTC+9Sat, Oct 17
UTC2026-10-17 04:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Seoul and Tokyo

Tokyo and Seoul are on the same time right now: Tokyo is on JST (UTC+9) and Seoul on KST (UTC+9). Neither city changes its clocks, so the gap is the same all year.

Time difference between Seoul and Tokyo over the next 12 months
From	Difference	Why
Now	Same time	—

Seoul is on Korean Standard Time. Tokyo is on Japan Standard Time.

Frequently Asked Questions: Seoul & Tokyo Scheduling

What is the time difference between Seoul and Tokyo?: Tokyo and Seoul are on the same time right now: Tokyo is on JST (UTC+9) and Seoul on KST (UTC+9). Neither city changes its clocks, so the gap is the same all year.
What is the best time to schedule a meeting between Seoul and Tokyo?: 9:00 AM to 5:00 PM in Seoul (9:00 AM to 5:00 PM in Tokyo). That's when both cities are inside working hours, 9 AM to 5 PM, giving 8 hours of overlap today.
Does Seoul observe daylight saving time?: No. Seoul stays on KST (UTC+9) all year, so its clocks don't change.
Does Tokyo observe daylight saving time?: No. Tokyo stays on JST (UTC+9) all year, so its clocks don't change.
What time is it in Tokyo when it's 9 AM in Seoul?: 9:00 AM in Tokyo, on the same day.

Or see every city pair, or plan with more places in the meeting planner.