KST to AEDT
+2hKST
KSTSOURCEAEDT
AEDTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and AEDT on the World Map
The map below highlights the KST (Korea Standard Time) and AEDT (Australian Eastern Daylight Time) timezone regions across the globe.
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).
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •AEDT runs from the first Sunday in October to the first Sunday in April.
- •AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
- •Queensland does not observe daylight saving, so Brisbane stays on AEST.
- •During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.
Understanding the +2h Gap: KST vs AEDT
KST runs on Korea Standard Time (KST) at UTC+09:00. AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. That puts KST 2 hours ahead of AEDT — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in KST it is 11:00 AM in AEDT. Midnight in KST is 2:00 AM in AEDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
KST to AEDT time conversion table
| KST (KST) | AEDT (AEDT) | Day |
|---|---|---|
| 12:00 AM | 2:00 AM | same day |
| 6:00 AM | 8:00 AM | same day |
| 7:00 AM | 9:00 AM | same day |
| 8:00 AM | 10:00 AM | same day |
| 9:00 AM | 11:00 AM | same day |
| 12:00 PM | 2:00 PM | same day |
| 3:00 PM | 5:00 PM | same day |
| 5:00 PM | 7:00 PM | same day |
| 6:00 PM | 8:00 PM | same day |
| 9:00 PM | 11:00 PM | same day |
Why people convert KST to AEDT time
- Scheduling a call from KST to AEDT: a 10:00 AM start in KST lands at 12:00 PM in AEDT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both KST and AEDT are inside the 9-to-5 working day between 9:00 AM and 3:00 PM KST time (11:00 AM–5:00 PM AEDT). That is roughly 6 hours of usable overlap.
- Coordinating a KST-based team with AEDT contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a +2h gap is not.
- Block 9:00 AM–3:00 PM KST as the recurring meeting window if you work primarily from KST and need AEDT colleagues present.
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.
About AEDT (Australian Eastern Daylight Time)
Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.
Best time to call between KST and AEDT
Both KST and AEDT sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM KST, which is 11:00 AM–5:00 PM AEDT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
KST and AEDT share 6 hours of working-hours overlap (9:00 AM–3:00 PM KST), so scheduling a live meeting is straightforward.
KST is 2 hours ahead of AEDT (KST UTC+09:00 → AEDT UTC+11:00). The shared working window is 9:00 AM–3:00 PM KST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
KST
Does not observe DST
AEDT
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
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 KST and AEDT?
KST (KST, UTC+09:00) is 2 hours ahead of AEDT (AEDT, UTC+11:00). The gap is currently +2h.
How do I convert KST time to AEDT time?
Add +2h to KST local time. For example, 9:00 AM in KST is 11:00 AM in AEDT.
What time is it in AEDT right now?
AEDT uses AEDT at UTC+11:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from KST.
What is the best time to call AEDT from KST?
Call between 9:00 AM and 3:00 PM KST — that maps to 11:00 AM–5:00 PM AEDT and keeps both parties inside the working day.
Which is ahead, KST or AEDT?
KST is 2 hours ahead of AEDT. When it is 12:00 PM in KST it is 2:00 PM in AEDT.
Does daylight saving time affect the KST–AEDT difference?
Neither zone observes daylight saving time, so the +2h offset between KST and AEDT is fixed all year.
Which other cities share KST's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, KST's zone?
KST is used in South Korea, North Korea.
Is there a day difference between KST and AEDT?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between KST and AEDT?
AEDT is +2h from KST.
What timezone is KST in?
KST operates on its local timezone.
What timezone is AEDT in?
AEDT operates on its local timezone.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the AEDT timezone?
Major cities in the AEDT timezone include Sydney, Melbourne, Canberra, Hobart, Newcastle.
What is the UTC offset for AEDT?
Australian Eastern Daylight Time (AEDT) is at UTC+11:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEDT timezone?
AEDT runs from the first Sunday in October to the first Sunday in April. AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
When is it midnight in KST, what time is it in AEDT?
When it is 12:00 AM (midnight) in KST (KST), it is +2h later in AEDT (AEDT).
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