ACST TokyoTime Converter
ACST (UTC+9:30) is currently 30 minutes ahead of Tokyo (JST, UTC+9). Compare live clocks, convert any hour, and find times to meet.
Quick answer
When it's in ACST, it's the same day in Tokyo.
ACST runs 30 minutes ahead of Tokyo (JST). Both sides keep standard office hours with a real 9–6 overlap — the highlighted window below works for everyone.
- Time difference
- −0h 30m
- ACST
- UTC+9:30
- Tokyo
- UTC+9
- Best call window
- 10:00 AM ACST
ACST to Tokyo conversion table
The next 12 hours in ACST and the matching local time in Tokyo. The current hour is highlighted; drag the converter's slider and the table follows.
| ACST | Tokyo · JST |
|---|---|
| NOW Mon, Jun 22 |
Mon, Jun 22 |
Tue, Jun 23 |
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 |
Best time to meet between ACST & Tokyo
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 ACST and Tokyo swings between 1.5 and 0.5 hours across the year as each side starts or ends daylight saving. Regions on ACST switch to ACDT (UTC+10:30) during daylight saving time. Tokyo does not observe daylight saving time. 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 ACST
To Tokyo
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 ACST time in Tokyo?", 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": "ACST → Tokyo",
"url": "https://worldclock.pro/en/convert/acst-to-tokyo",
"from": {
"name": "ACST",
"type": "timezone",
"abbreviation": "ACST",
"daylightAbbreviation": "ACDT",
"iana": "Australia/Adelaide",
"standardUtcOffset": "+09:30",
"daylightUtcOffset": "+10:30",
"referenceCity": "Adelaide"
},
"to": {
"name": "Tokyo",
"type": "city",
"abbreviation": "JST",
"daylightAbbreviation": null,
"iana": "Asia/Tokyo",
"standardUtcOffset": "+09:00",
"daylightUtcOffset": null,
"referenceCity": "Tokyo"
},
"currentDifferenceMinutes": -30,
"possibleDifferencesMinutes": [
-90,
-30
],
"note": "Between the regions that use these zones the difference is 1.5 and 0.5 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 ACST and Tokyo?
ACST is currently 30 minutes ahead of Tokyo. ACST is on ACST (UTC+9:30) and Tokyo is on JST (UTC+9). The difference can change when either side starts or ends daylight saving time.
Is Tokyo ahead of or behind ACST?
Tokyo is currently 30 minutes behind ACST.
When it is 9:00 AM in ACST, what time is it in Tokyo?
When it is 9:00 AM on a Monday in ACST, it is 8:30 AM in Tokyo.
Do ACST and Tokyo observe daylight saving time?
Regions on ACST switch to ACDT (UTC+10:30) during daylight saving time. Tokyo does not observe daylight saving time.
How do I convert ACST time to Tokyo time?
Subtract 30 minutes from any time in ACST to get the time in Tokyo. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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