Seoul to Sydney Time
KST to AEST Converter — 9 AM KST is 10:00 AM AEST
Seoul is 1 hour behind Sydney. Convert any time between Seoul (KST) and Sydney (AEST/AEDT) instantly.
Seoul
South Korea
Sydney
Australia
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Time Zone Comparison
Seoul to Sydney Time Conversion Table
| Seoul (KST) | Sydney (AEST) |
|---|---|
| 12:00 AM | 2:00 AM |
| 2:00 AM | 3:00 AM |
| 4:00 AM | 5:00 AM |
| 6:00 AM | 7:00 AM |
| 8:00 AM | 9:00 AM |
| 10:00 AM | 11:00 AM |
| 12:00 PM | 1:00 PM |
| 2:00 PM | 3:00 PM |
| 4:00 PM | 5:00 PM |
| 6:00 PM | 7:00 PM |
| 8:00 PM | 9:00 PM |
| 10:00 PM | 11:00 PM |
Seoul & Sydney — Business & Scheduling Guide
Seoul (South Korea) is a technology-driven economy known for rapid innovation, with key industries in semiconductors, automotive, shipbuilding, and K-content. Sydney (Australia) is a stable, resource-rich economy in the Asia-Pacific region, known for mining, agriculture, finance, and tourism. With a 1-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Seoul and Sydney
With only a 1-hour gap, Seoul and Sydney have generous overlapping work hours. Morning calls in the later time zone align well with mid-day in the other. South Korean work culture is fast-paced with typical hours of 9 AM–6 PM, though recent reforms have reduced maximum weekly hours. Australian work culture values work-life balance, with typical hours of 9 AM–5 PM and flexible arrangements common. Most teams find that late morning to early afternoon offers the widest window for collaboration.
Daylight Saving Time Considerations
Sydney observes Daylight Saving Time (AEST/AEDT), while Seoul stays on KST year-round. When Sydney switches to daylight time, the effective time difference shifts by 1 hour. This typically happens in spring and fall, and the exact dates vary by country. If you have recurring cross-timezone meetings, recalculate the schedule after each DST transition.
KST to AEST — Quick Reference
KST (KST) stands for the timezone used in Seoul, South Korea (UTC+9). AEST (AEST/AEDT) is the timezone used in Sydney, Australia (UTC+10). Seoul is 1 hour behind Sydney.
To convert KST to AEST, add 1 hours to KST time. For example, KST 9:00 AM = AEST 10:00 AM.
Key Facts
- •Time difference: Seoul (UTC+9) is 1 hour behind Sydney (UTC+10).
- •Daylight Saving Time: Seoul does not observe DST (KST). Sydney observes DST (AEST/AEDT).
- •Regions: Seoul is located in South Korea and uses the KST time zone. Sydney is located in Australia and uses the AEST/AEDT time zone.
- •Best time to call: The best time to call between Seoul and Sydney is 9:00 AM to 3:00 PM in Seoul time, when both cities have overlapping standard working hours.
Frequently Asked Questions
What is the time difference between Seoul and Sydney?
Seoul is 1 hour behind Sydney.
What time is it in Sydney when it's 9 AM in Seoul?
When it's 9:00 AM in Seoul, it is 10:00 AM in Sydney.
What time is 9 PM KST in AEST?
9 PM KST (Seoul time) is 10:00 PM AEST (Sydney time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Seoul and Sydney?
The best time to schedule a meeting is between 9:00 AM to 3:00 PM in Seoul time, when both cities are within standard working hours (9 AM – 5 PM). This gives you the maximum overlap window for real-time collaboration.
How do I convert KST to AEST?
KST (KST) is the timezone for Seoul, South Korea (UTC+9). AEST (AEST/AEDT) is the timezone for Sydney, Australia (UTC+10). Seoul is 1 hour behind Sydney. Quick examples: 9 AM KST = 10:00 AM AEST, 12 PM KST = 1:00 PM AEST, 3 PM KST = 4:00 PM AEST, 6 PM KST = 7:00 PM AEST.
Is Seoul ahead of or behind Sydney?
Seoul is 1 hour behind Sydney. When it's noon in Seoul, it's 1:00 PM in Sydney.
Does Seoul or Sydney change clocks for Daylight Saving Time?
No, Seoul does not observe DST — it stays on KST year-round. Sydney observes DST and switches between AEST/AEDT. Because only one city observes DST, the time difference shifts by 1 hour during transition periods (typically March/April and October/November).
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