KST SydneyTime Converter
KST (UTC+9) is currently 1 hour behind Sydney (AEST, UTC+10). Compare live clocks, convert any hour, and find times to meet.
Best time to meet between KST and Sydney
Best meeting times:
KST: 9:00 AM – 5:00 PM
Sydney: 10:00 AM – 6:00 PM
Quick answer
When it's in KST, it's the same day in Sydney.
KST runs 1 hour behind Sydney (AEST/AEDT). Both sides keep standard office hours with a real 9–6 overlap: the highlighted window above works for everyone.
- Time difference
- +1h 00m
- KST
- UTC+9
- Sydney
- UTC+10
- Best call window
- 9:00 AM KST
KST to Sydney conversion table
The next 12 hours in KST and the matching local time in Sydney. The current hour is highlighted; drag the converter's slider and the table follows.
| KST | Sydney · AEST |
|---|---|
| NOW Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Daylight saving shifts this gap by up to 1 hour
The difference between KST and Sydney swings between 1 and 2 hours across the year as each side starts or ends daylight saving. Clocks in Sydney move forward 1 hour to AEDT (UTC+11) on Sunday, October 4, 2026. This page always shows the live, DST-aware difference.
Related time zone conversions
Jump straight to another pair: every combination is a live tool, not an article.
From KST
To Sydney
One source of truth, for you and your AI
This page exposes the same answer as structured data, so when you ask an assistant "what's 9am KST time in Sydney?", it can cite the exact, DST-aware result, not a stale blog post.
- Schema.org JSON-LD on every converter page
- A machine-readable facts island with time zone identifiers and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "KST → Sydney",
"url": "https://worldclock.pro/en/convert/kst-to-sydney",
"from": {
"name": "KST",
"type": "timezone",
"abbreviation": "KST",
"daylightAbbreviation": null,
"iana": "Asia/Seoul",
"standardUtcOffset": "+09:00",
"daylightUtcOffset": null,
"referenceCity": "Seoul"
},
"to": {
"name": "Sydney",
"type": "city",
"abbreviation": "AEST",
"daylightAbbreviation": "AEDT",
"iana": "Australia/Sydney",
"standardUtcOffset": "+10:00",
"daylightUtcOffset": "+11:00",
"referenceCity": "Sydney"
},
"currentDifferenceMinutes": 60,
"possibleDifferencesMinutes": [
60,
120
],
"note": "Between the regions that use these zones the difference is 1 and 2 hours across the year, depending on daylight saving on each side. The clocks on this page show the named zones themselves, which are fixed."
}
Frequently asked questions
What is the time difference between KST and Sydney?
KST is currently 1 hour behind Sydney. KST is on KST (UTC+9) and Sydney is on AEST (UTC+10). The difference can change when either side starts or ends daylight saving time.
Is Sydney ahead of or behind KST?
Sydney is currently 1 hour ahead of KST.
When it is 9:00 AM in KST, what time is it in Sydney?
When it is 9:00 AM on a Friday in KST, it is 10:00 AM in Sydney.
Do KST and Sydney observe daylight saving time?
KST does not observe daylight saving time. Clocks in Sydney move forward 1 hour to AEDT (UTC+11) on Sunday, October 4, 2026.
How do I convert KST time to Sydney time?
Add 1 hour to any time in KST to get the time in Sydney. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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