AEST to South Korea
-1hAEST
AESTSOURCESouth Korea
KSTGreen rows indicate typical business hours (9 AM - 5 PM)
AEST and KST on the World Map
The map below highlights the AEST (Australian Eastern Standard Time) and KST (Korea Standard Time) timezone regions across the globe.
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •Queensland does not observe daylight saving time, staying on AEST year-round.
- •Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
- •The Australian Securities Exchange (ASX) operates on AEST/AEDT.
- •AEST is 15 hours ahead of EST during winter.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
Comparing Time Zones: AEST and South Korea
AEST runs on Australian Eastern Standard Time (AEST) at UTC+10:00. South Korea runs on Korean Standard Time (KST) at UTC+09:00. That puts AEST 1 hour behind South Korea — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in AEST it is 8:00 AM in South Korea. Midnight in AEST is 11:00 PM in South Korea. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AEST to South Korea time conversion table
| AEST (AEST) | South Korea (KST) | Day |
|---|---|---|
| 12:00 AM | 11:00 PM | previous day |
| 6:00 AM | 5:00 AM | same day |
| 7:00 AM | 6:00 AM | same day |
| 8:00 AM | 7:00 AM | same day |
| 9:00 AM | 8:00 AM | same day |
| 12:00 PM | 11:00 AM | same day |
| 3:00 PM | 2:00 PM | same day |
| 5:00 PM | 4:00 PM | same day |
| 6:00 PM | 5:00 PM | same day |
| 9:00 PM | 8:00 PM | same day |
Why people convert AEST to South Korea time
- Scheduling a call from AEST to South Korea: a 10:00 AM start in AEST lands at 9:00 AM in South Korea, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both AEST and South Korea are inside the 9-to-5 working day between 10:00 AM and 5:00 PM AEST time (9:00 AM–4:00 PM KST). That is roughly 7 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in AEST is 7:00 PM in South Korea makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEST" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM AEST as the recurring meeting window if you work primarily from AEST and need South Korea colleagues present.
About AEST (Australian Eastern Standard Time)
Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
Best time to call between AEST and South Korea
Both AEST and South Korea sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM AEST, which is 9:00 AM–4:00 PM KST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
AEST and South Korea share 7 hours of working-hours overlap (10:00 AM–5:00 PM AEST), so scheduling a live meeting is straightforward.
AEST is 1 hour behind South Korea (AEST UTC+10:00 → KST UTC+09:00). The shared working window is 10:00 AM–5:00 PM AEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AEST
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
South Korea
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between AEST and South Korea?
AEST (AEST, UTC+10:00) is 1 hour behind South Korea (KST, UTC+09:00). The gap is currently -1h.
How do I convert AEST time to South Korea time?
Add -1h to AEST local time. For example, 9:00 AM in AEST is 8:00 AM in South Korea.
What time is it in South Korea right now?
South Korea uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from AEST.
What is the best time to call South Korea from AEST?
Call between 10:00 AM and 5:00 PM AEST — that maps to 9:00 AM–4:00 PM KST and keeps both parties inside the working day.
Which is behind, AEST or South Korea?
AEST is 1 hour behind South Korea. When it is 12:00 PM in AEST it is 11:00 AM in South Korea.
Do AEST and South Korea use different time zones?
AEST uses AEST at UTC+10:00, while South Korea (South Korea) uses KST at UTC+09:00. The IANA identifiers are Australia/Sydney and Asia/Seoul.
Does daylight saving time affect the AEST–South Korea difference?
Neither zone observes daylight saving time, so the -1h offset between AEST and South Korea is fixed all year.
Which other cities share AEST's time zone?
AEST also covers Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
Which countries use AEST, AEST's zone?
AEST is used in Australia (NSW, VIC, QLD, TAS, ACT), Papua New Guinea.
Is there a day difference between AEST and South Korea?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between AEST and South Korea?
South Korea is -1h from AEST.
What timezone is AEST in?
AEST operates on its local timezone.
What timezone is South Korea in?
South Korea operates on its local timezone.
Which countries use AEST (Australian Eastern Standard Time)?
AEST is used in Australia (NSW, VIC, QLD, TAS, ACT), Papua New Guinea.
Does AEST observe daylight saving time?
Yes, AEST switches to AEDT during summer months.
What are some interesting facts about AEST?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
Which cities are in the KST timezone?
Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
What is the UTC offset for KST?
Korea Standard Time (KST) is at UTC+09:00.
What should I know about the KST timezone?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
When is it midnight in AEST, what time is it in South Korea?
When it is 12:00 AM (midnight) in AEST (AEST), it is -1h later in South Korea (KST).
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See every conversion from AEST →·See every conversion from South Korea →