KST to AEST: KST is 1 hour behind AEST
Korea Standard Time is 1 hour behind Australian Eastern Time right now. It is 3:18 pm KST in Korea and 4:18 pm AEST in Australian Eastern.
Convert a specific time from KST to AEST
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between KST and AEST?
Australian Eastern Time is 1 hour ahead of Korea Standard Time. To go from KST to AEST you add 1 hour. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from 1 hour to 2 hours, because Australian Eastern moves its clocks and Korea does not. This page recomputes it rather than assuming.
KST to AEST conversion table
Every hour of Friday, September 25, 2026 in Korea, with the matching reading in Australian Eastern. 1 of the 24 hours land on a different calendar date in Australian Eastern, which is the part people get wrong when they schedule across this pair.
| KST | KST 24h | AEST | AEST 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 1:00 am | 01:00 | same day |
| 1:00 am | 01:00 | 2:00 am | 02:00 | same day |
| 2:00 am | 02:00 | 3:00 am | 03:00 | same day |
| 3:00 am | 03:00 | 4:00 am | 04:00 | same day |
| 4:00 am | 04:00 | 5:00 am | 05:00 | same day |
| 5:00 am | 05:00 | 6:00 am | 06:00 | same day |
| 6:00 am | 06:00 | 7:00 am | 07:00 | same day |
| 7:00 am | 07:00 | 8:00 am | 08:00 | same day |
| 8:00 am | 08:00 | 9:00 am | 09:00 | same day |
| 9:00 am | 09:00 | 10:00 am | 10:00 | same day |
| 10:00 am | 10:00 | 11:00 am | 11:00 | same day |
| 11:00 am | 11:00 | 12:00 pm | 12:00 | same day |
| 12:00 pm | 12:00 | 1:00 pm | 13:00 | same day |
| 1:00 pm | 13:00 | 2:00 pm | 14:00 | same day |
| 2:00 pm | 14:00 | 3:00 pm | 15:00 | same day |
| 3:00 pm | 15:00 | 4:00 pm | 16:00 | same day |
| 4:00 pm | 16:00 | 5:00 pm | 17:00 | same day |
| 5:00 pm | 17:00 | 6:00 pm | 18:00 | same day |
| 6:00 pm | 18:00 | 7:00 pm | 19:00 | same day |
| 7:00 pm | 19:00 | 8:00 pm | 20:00 | same day |
| 8:00 pm | 20:00 | 9:00 pm | 21:00 | same day |
| 9:00 pm | 21:00 | 10:00 pm | 22:00 | same day |
| 10:00 pm | 22:00 | 11:00 pm | 23:00 | same day |
| 11:00 pm | 23:00 | 12:00 am | 00:00 | the next day |
What are the best hours to schedule a call between KST and AEST?
7 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 9:00 am KST to 4:00 pm KST. In Australian Eastern that window reads 10:00 am to 5:00 pm. Outside it, one side is either not yet at their desk or already gone.
| KST | AEST | Working hours | Note |
|---|---|---|---|
| 9:00 am | 10:00 am | both sides | mid morning in Korea, mid morning in Australian Eastern |
| 10:00 am | 11:00 am | both sides | mid morning in Korea, mid morning in Australian Eastern |
| 11:00 am | 12:00 pm | both sides | mid morning in Korea, noon in Australian Eastern |
| 12:00 pm | 1:00 pm | both sides | noon in Korea, afternoon in Australian Eastern |
| 1:00 pm | 2:00 pm | both sides | afternoon in Korea, afternoon in Australian Eastern |
| 2:00 pm | 3:00 pm | both sides | afternoon in Korea, afternoon in Australian Eastern |
| 3:00 pm | 4:00 pm | both sides | afternoon in Korea, afternoon in Australian Eastern |
Does daylight saving change KST to AEST?
Korea Standard Time does not move its clocks at all, so its UTC+9 offset holds every day of the year.
Australian Eastern Time is currently on AEST and changes next on Sunday, October 4, 2026, when the clock jumps forward from 1:59 am to 3:00 am and the offset moves from UTC+10 to UTC+11.
Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is 1 hour and for the rest it is 2 hours. The table above is built for today, not for an average day.
Is KST ahead of or behind AEST?
KST is behind AEST by 1 hour: when it is 12:00 pm in Korea, it is 1:00 pm in Australian Eastern. One wrinkle worth knowing: AEST and AEDT are two names for the same zone, not two zones. Australian Eastern Time reads AEST in winter and AEDT in summer. When somebody types "kst to aest" they nearly always mean the zone rather than the literal winter offset, so this page resolves KST to Asia/Seoul and AEST to Australia/Sydney and applies whichever offset is genuinely in force on the day.
Korea Standard Time covers Seoul and South Korea. Australian Eastern Time covers Sydney, Melbourne and Canberra, where summer falls in December. The identifiers behind them are Asia/Seoul and Australia/Sydney, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is KST in AEST?
- KST is 1 hour behind AEST. 9:00 am KST is 10:00 am AEST.
- How many hours ahead is AEST of KST?
- AEST is 1 hour ahead of KST. That varies across the year, between 1 hour and 2 hours.
- What time is it in Australian Eastern right now?
- 4:18 pm AEST on Friday, September 25, 2026.
- When can Korea and Australian Eastern meet during working hours?
- Between 9:00 am and 4:00 pm KST, which is 10:00 am to 5:00 pm AEST.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so KST and AEST are the abbreviations genuinely in force today rather than a fixed assumption.
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