What is KST in AEST?

Australian Eastern Time is 1 hour ahead

Korea Standard Time is on UTC+9:00 and Australian Eastern Time is on UTC+10:00 right now. The gap changes during the year — see below.

Time in Seoul: 9:03:55 PM
Time in Sydney: 10:03:55 PM
Difference: +1 h
Next clock change: October 4, 2026

Convert a time

KST — Korea Standard Time

AEST — Australian Eastern Time

10:00 pm

AEST, Fri

When the difference changes

Korea Standard Time and Australian Eastern Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

Now – October 4, 2026Australian Eastern Time is 1 hour ahead
October 4, 2026 – April 4, 2027Australian Eastern Time is 2 hours ahead
April 4, 2027 – October 3, 2027Australian Eastern Time is 1 hour ahead
October 3, 2027 – onwardsAustralian Eastern Time is 2 hours ahead

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Korea Standard Time

No clock changes

Korea Standard Time stays on KST all year, so its offset from UTC never moves.

Australian Eastern Time

Sunday, October 4, 2026

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on AEDT after that.

KST to AEST conversion table

Every hour of Friday, September 25, 2026, converted from Korea Standard Time to Australian Eastern Time. 1 of the 24 hours fall on a different calendar day in Sydney, which is marked.

12:00 am KST: 1:00 am AEST
1:00 am KST: 2:00 am AEST
2:00 am KST: 3:00 am AEST
3:00 am KST: 4:00 am AEST
4:00 am KST: 5:00 am AEST
5:00 am KST: 6:00 am AEST
6:00 am KST: 7:00 am AEST
7:00 am KST: 8:00 am AEST
8:00 am KST: 9:00 am AEST
9:00 am KST: 10:00 am AEST
10:00 am KST: 11:00 am AEST
11:00 am KST: 12:00 pm AEST

12:00 pm KST: 1:00 pm AEST
1:00 pm KST: 2:00 pm AEST
2:00 pm KST: 3:00 pm AEST
3:00 pm KST: 4:00 pm AEST
4:00 pm KST: 5:00 pm AEST
5:00 pm KST: 6:00 pm AEST
6:00 pm KST: 7:00 pm AEST
7:00 pm KST: 8:00 pm AEST
8:00 pm KST: 9:00 pm AEST
9:00 pm KST: 10:00 pm AEST
10:00 pm KST: 11:00 pm AEST
11:00 pm KST: 12:00 am AEST+1 day

Scheduling between the two

Working hours overlap from 9:00 am to 5:00 pm KST, which is 10:00 am to 6:00 pm AEST. Anything inside that window falls in the normal working day at both ends.

Australian Eastern Time (AEST) is used in Melbourne, Canberra and Brisbane. Queensland stays on AEST all year while the southern states move to AEDT.