JST SydneyTime Converter
JST (UTC+9) is currently 1 hour behind Sydney (AEST, UTC+10). Compare live clocks, convert any hour, and find times to meet.
Quick answer
When it's in JST, it's the same day in Sydney.
JST runs 1 hour behind Sydney (AEST/AEDT). Both sides keep standard office hours with a real 9–6 overlap — the highlighted window below works for everyone.
- Time difference
- +1h 00m
- JST
- UTC+9
- Sydney
- UTC+10
- Best call window
- 9:00 AM JST
JST to Sydney conversion table
The next 12 hours in JST and the matching local time in Sydney. The current hour is highlighted; drag the converter's slider and the table follows.
| JST | Sydney · AEST |
|---|---|
| NOW Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Tue, Jun 23 |
Best time to meet between JST & Sydney
Working hours are 9am–6pm in each city. The bright band is where they overlap — when both sides are at their desks.
Daylight saving shifts this gap by up to 1 hour
The difference between JST 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 JST
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 JST 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 IANA zones and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "JST → Sydney",
"url": "https://worldclock.pro/en/convert/jst-to-sydney",
"from": {
"name": "JST",
"type": "timezone",
"abbreviation": "JST",
"daylightAbbreviation": null,
"iana": "Asia/Tokyo",
"standardUtcOffset": "+09:00",
"daylightUtcOffset": null,
"referenceCity": "Tokyo"
},
"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 JST and Sydney?
JST is currently 1 hour behind Sydney. JST is on JST (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 JST?
Sydney is currently 1 hour ahead of JST.
When it is 9:00 AM in JST, what time is it in Sydney?
When it is 9:00 AM on a Monday in JST, it is 10:00 AM in Sydney.
Do JST and Sydney observe daylight saving time?
JST 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 JST time to Sydney time?
Add 1 hour to any time in JST 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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