Does Seoul observe daylight saving time?

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

Does Sydney observe daylight saving time?

Yes. Sydney is on AEDT (UTC+11) now, and its clocks go back 1 hour on Sun, Apr 4, 2027, to AEST (UTC+10).

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

11:00 AM in Sydney, on the same day.

Seoul to Sydney Meeting Planner

Sydney is 2 hours ahead of Seoul right now. Their working days overlap for 6 hours today.

Seoul · South Korea

6:22 AM

Sun, Oct 18 · KST

Sydney · Australia

8:22 AM

Sun, Oct 18 · AEDT · summer time

Best Meeting Times Between Seoul and Sydney

9:00 AM to 3:00 PM in Seoul (11:00 AM to 5:00 PM in Sydney). That's when both cities are inside working hours, 9 AM to 5 PM, giving 6 hours of overlap today.

Who's meeting

2 of 4 places

SeoulOrganizerSouth Korea ·6:22AMnow
SydneyAustralia ·· summer time8:22AMnow

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

Sunday, October 18, 2026, in Seoul time.

1:00PMBest · OptimalWorking hours in Seoul (13:00) and Sydney (15:00).
12:00PMOption 2 · OptimalWorking hours in Seoul (12:00) and Sydney (14:00).
2:00PMOption 3 · OptimalWorking hours in Seoul (14:00) and Sydney (16:00).

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
SydneyAEDT
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+9Sun, Oct 18
Sydney3:00 PM AEDTSun, Oct 18
UTC2026-10-18 04:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Seoul and Sydney

Sydney is 2 hours ahead of Seoul right now: Sydney is on AEDT (UTC+11) and Seoul on KST (UTC+9). That changes on Sun, Apr 4, 2027, when clocks go back in Sydney: then Sydney is 1 hour ahead of Seoul.

Time difference between Seoul and Sydney over the next 12 months
From	Difference	Why
Now	Sydney 2 hours ahead	—
Sun, Apr 4, 2027	Sydney 1 hour ahead	Clocks go back in Sydney
Sun, Oct 3, 2027	Sydney 2 hours ahead	Clocks go forward in Sydney

Seoul is on Korean Standard Time. Sydney is on Australian Eastern Standard Time.

Frequently Asked Questions: Seoul & Sydney Scheduling

What is the time difference between Seoul and Sydney?: Sydney is 2 hours ahead of Seoul right now: Sydney is on AEDT (UTC+11) and Seoul on KST (UTC+9). That changes on Sun, Apr 4, 2027, when clocks go back in Sydney: then Sydney is 1 hour ahead of Seoul.
What is the best time to schedule a meeting between Seoul and Sydney?: 9:00 AM to 3:00 PM in Seoul (11:00 AM to 5:00 PM in Sydney). That's when both cities are inside working hours, 9 AM to 5 PM, giving 6 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 Sydney observe daylight saving time?: Yes. Sydney is on AEDT (UTC+11) now, and its clocks go back 1 hour on Sun, Apr 4, 2027, to AEST (UTC+10).
What time is it in Sydney when it's 9 AM in Seoul?: 11:00 AM in Sydney, on the same day.

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