utc now / zones / utc-to-acst

UTC to ACST converter

ACST is 9.5 hours ahead of UTC right now. Live clocks on both sides, a direct time input, the full 24-hour table with a permalink per hour, and the real daylight-saving state — computed from the IANA tz database on every request, never from a stored offset.

Coordinated Universal Time · UTC
00:26:00
Thursday, 13 August 2026 · UTC · UTC+00:00
⇄
Australian Central Standard Time · Australia/Adelaide
09:56:00
Thursday, 13 August 2026 · ACST · UTC+09:30

Convert an exact time type it — no sliders

09:56
swap

Conversion runs in your browser against the same IANA rules the server uses, so it keeps working offline and nothing you type is sent anywhere.

Daylight saving right now

Australian Central Standard Time

Australia/Adelaide is currently on ACST (UTC+09:30).

next change: Sun, 4 Oct 2026 03:00 local → ACDT (51 days, clocks go forward)

ACST is UTC+9:30, one of the handful of half-hour offsets still in daily use. Adelaide moves to ACDT (UTC+10:30) in the southern summer; Darwin stays on ACST.

Coordinated Universal Time

UTC is on UTC (UTC+00:00).

no clock change scheduled — fixed at UTC+00:00

UTC is the reference clock every other offset is quoted against. It has no daylight saving and never shifts.

Best time to call green = 09:00–18:00 on both sides

No overlap inside a 09:00–18:00 day on both sides. Someone has to take an early or late slot — the table below shows exactly which hours are least bad.

Google Calendar Outlook download .ics

UTC to ACST, hour by hour 13 August 2026 · every row is a permalink

UTC ACST 12-hour Day Permalink
00:00 09:30 ACST 9:30 AM same day 00:00 →
01:00 10:30 ACST 10:30 AM same day 01:00 →
02:00 11:30 ACST 11:30 AM same day 02:00 →
03:00 12:30 ACST 12:30 PM same day 03:00 →
04:00 13:30 ACST 1:30 PM same day 04:00 →
05:00 14:30 ACST 2:30 PM same day 05:00 →
06:00 15:30 ACST 3:30 PM same day 06:00 →
07:00 16:30 ACST 4:30 PM same day 07:00 →
08:00 17:30 ACST 5:30 PM same day 08:00 →
09:00 18:30 ACST 6:30 PM same day 09:00 →
10:00 19:30 ACST 7:30 PM same day 10:00 →
11:00 20:30 ACST 8:30 PM same day 11:00 →
12:00 21:30 ACST 9:30 PM same day 12:00 →
13:00 22:30 ACST 10:30 PM same day 13:00 →
14:00 23:30 ACST 11:30 PM same day 14:00 →
15:00 00:30 ACST 12:30 AM next day 15:00 →
16:00 01:30 ACST 1:30 AM next day 16:00 →
17:00 02:30 ACST 2:30 AM next day 17:00 →
18:00 03:30 ACST 3:30 AM next day 18:00 →
19:00 04:30 ACST 4:30 AM next day 19:00 →
20:00 05:30 ACST 5:30 AM next day 20:00 →
21:00 06:30 ACST 6:30 AM next day 21:00 →
22:00 07:30 ACST 7:30 AM next day 22:00 →
23:00 08:30 ACST 8:30 AM next day 23:00 →

Every hour as its own page

00:00 UTC 01:00 UTC 02:00 UTC 03:00 UTC 04:00 UTC 05:00 UTC 06:00 UTC 07:00 UTC 08:00 UTC 09:00 UTC 10:00 UTC 11:00 UTC 12:00 UTC 13:00 UTC 14:00 UTC 15:00 UTC 16:00 UTC 17:00 UTC 18:00 UTC 19:00 UTC 20:00 UTC 21:00 UTC 22:00 UTC 23:00 UTC

UTC to ACST — questions

What time is it in ACST when it is UTC now?
ACST is currently 09:56 on Thursday, 13 August 2026 (ACST, UTC+09:30), while UTC is 00:26 (UTC+00:00). That is 9.5 hours ahead of the source clock right now.
How many hours ahead is ACST of UTC?
9.5 hours at this moment. The gap is not constant across the year: Coordinated Universal Time and Australian Central Standard Time change clocks on different dates (or one of them not at all), so a difference you hard-code in summer can be an hour wrong in winter. The table on this page is computed from the current tzdata rules, not from a fixed offset.
Is ACST on daylight saving time right now?
No. Australia/Adelaide is on ACST (UTC+09:30) at the moment.
When does ACST next change its clocks?
Australia/Adelaide next changes on Sunday, 04 October 2026 at 03:00 local time, when it moves forward 60 minutes and the abbreviation becomes ACDT (UTC+10:30). That is 51 days away. This date comes from the IANA tzdata rules currently in force, so it updates if a government changes the law.
Is there any working-hours overlap between UTC and ACST?
Not inside a normal 09:00-18:00 day on both sides — the 9.5-hour gap is too wide. One party has to take an early or late slot; the hour table above shows exactly which hours land where so you can pick the least painful one.
Which IANA timezone name should I use for ACST in code?
Use Australia/Adelaide. Abbreviations like ACST are ambiguous and not resolvable by most libraries — Python's ZoneInfo, Java's ZoneId, Go's time.LoadLocation and JavaScript's Intl all expect the IANA name. Hard-coding UTC+09:30 instead will be wrong the moment the rules change.

Keyboard shortcuts

cCopy the ISO 8601 timestamp
uCopy the Unix timestamp
/Focus the timezone search
tToggle light and dark
?This help
EscClose