Best Meeting Time: Seoul to Sydney
🕐 Live Timezone Overlap: Seoul & Sydney
Seoul and Sydney sit just one hour apart, with Sydney ahead. That is a surprisingly small gap for cities separated by thousands of kilometres, and it means the two working days overlap for a full 8 hours. The main scheduling consideration is not the clock but the calendar: Sydney observes daylight saving time and Seoul does not, so that comfortable one-hour difference can shift depending on the time of year.
Time Difference: Seoul and Sydney
Sydney is currently 1 hour ahead of Seoul. The live offsets are Seoul UTC+9 and Sydney UTC+10. Seoul does not observe daylight saving and Sydney observes daylight saving, so the offset shifts twice a year if both sides aren't already aligned.
Seoul runs UTC+9 all year. South Korea does not observe DST, so the offset never changes. Sydney alternates between UTC+10 (AEST) and UTC+11 (AEDT), moving to AEDT on the first Sunday in October and reverting on the first Sunday in April. When Sydney is on AEDT, the gap between Seoul and Sydney widens from 1 hour to 2 hours, with Sydney still ahead. Outside that southern-hemisphere summer window, the difference returns to 1 hour.
Best Times to Meet
The 8-hour overlap runs from 9am to 5pm in Seoul and 10am to 6pm in Sydney. That is a generous window by any standard. Inside that 8-hour window, the cleanest slot is typically 10am to 3pm Seoul time (11am to 4pm Sydney), avoiding the final hour when Sydney teams may be wrapping up. One cultural caveat: late Friday meetings are uncommon in Seoul, where Friday evenings often involve team social gatherings, so schedule Friday calls before mid-afternoon Seoul time.
Working Hours Overlap Explained
Seoul operates on Asia/Seoul (currently UTC+9). Sydney operates on Australia/Sydney (currently UTC+10). The table below maps a standard 9:00 AM–6:00 PM day in Seoul to Sydney's local time.
| Seoul time | Sydney time | Status |
|---|---|---|
| 9:00 AM | 10:00 AM | Sydney in business hours |
| 10:00 AM | 11:00 AM | Sydney in business hours |
| 11:00 AM | 12:00 PM | Sydney in business hours |
| 12:00 PM | 1:00 PM | Sydney in business hours |
| 1:00 PM | 2:00 PM | Sydney in business hours |
| 2:00 PM | 3:00 PM | Sydney in business hours |
| 3:00 PM | 4:00 PM | Sydney in business hours |
| 4:00 PM | 5:00 PM | Sydney in business hours |
| 5:00 PM | 6:00 PM | Sydney wrapping up |
| 6:00 PM | 7:00 PM | Sydney outside hours |
Tips for Scheduling Across Seoul and Sydney
- When Sydney shifts to AEDT in October, update recurring Seoul-Sydney invites: the gap widens to 2 hours.
- Avoid scheduling Seoul calls on Friday afternoons; team social obligations make late-Friday meetings uncommon there.
- Between Christmas and 26 January, Sydney offices are often understaffed. Confirm attendance before booking.
- Seollal and Chuseok each close Seoul for up to 4 days. Check the movable dates each year before planning.
- A 10am to 3pm Seoul slot (11am to 4pm Sydney) keeps both teams well within their core working hours.
Public Holidays and Working Weeks
Both Seoul and Sydney use a Monday-to-Friday working week, with 9am to 6pm as the standard pattern. Seoul's major closures are Seollal (Lunar New Year, January or February) and Chuseok (September or October), each lasting three to four days. Sydney-side, Christmas Day (25 December) and Australia Day (26 January) are key dates, and offices in Sydney run on skeleton staff between Christmas and Australia Day. Check both calendars before confirming any cross-city meeting.