ACST Time Now — Australian Central Standard Time

ACST (Australian Central Standard Time) is a fixed offset of UTC+9:30 — it never changes for daylight saving.

Live •Updates every second
UTC+9:30 Monday, June 22, 2026
21:45:56

Compare with

It is in ACST (Australian Central Standard Time, UTC+9:30) right now. ACST (Australian Central Standard Time) is a fixed offset of UTC+9:30 — it never changes for daylight saving. The Northern Territory (Darwin) stays on ACST all year; South Australia (Adelaide) switches to ACDT in summer.
Daylight saving

Is it ACST or ACDT right now?

ACST (UTC+9:30) is in effect right now. Clocks spring forward to ACDT (UTC+10:30) on October 4, 2026 — in 103 days.
Apr 5Oct 4
ACDT · daylight (UTC+10:30) ACST · standard (UTC+9:30) Today
Clock changes

ACST / ACDT daylight-saving dates

2026

↓ Back Sunday, April 5 → ACST
↑ Forward Sunday, October 4 → ACDT

2027

↓ Back Sunday, April 4 → ACST
↑ Forward Sunday, October 3 → ACDT

Clocks change at 2:00 AM local time. Dates shift by a week or so each year; these are computed live from the IANA time-zone database.

What the letters mean

ACST, ACDT and Australian Central Time

Standard time (winter)
ACST — Australian Central Standard Time
UTC+9:30
Daylight time (summer)
ACDT — Australian Central Daylight Time
UTC+10:30
When you're not sure
Write Australian Central Time — it refers to whichever of ACST or ACDT is currently in effect, so it's always correct.
Time differences

ACST vs other time zones right now

UTC Coordinated Universal Time −9:30 → GMT Greenwich Mean Time −9:30 → EST Eastern Standard Time −14:30 → PST Pacific Standard Time −17:30 → CST Central Standard Time −15:30 → CET Central European Time −8:30 → IST India Standard Time −4h → SGT Singapore Time −1:30 →

Tap a row for the full conversion page with a 24-hour table and the best hours to schedule across both zones.

Reference

About ACST

Full name
Australian Central Standard Time
UTC offset
UTC+9:30
Type
Standard time (fixed offset)
Daylight counterpart
ACDT — Australian Central Daylight Time
Where it is used
South Australia and the Northern Territory — a UTC+9:30 half-hour offset.

Regions on ACST switch to ACDT (UTC+10:30) during daylight saving time.

Cities on ACST right now

Adelaide

Convert ACST to other time zones

ACST → UTC ACST → GMT ACST → EST ACST → PST ACST → CST ACST → CET ACST → IST ACST → SGT

Convert ACST to major cities

ACST → New York ACST → London ACST → Tokyo ACST → Sydney ACST → Los Angeles ACST → Dubai ACST → Singapore ACST → Mumbai

Frequently asked questions

What does ACST stand for?

ACST stands for Australian Central Standard Time, a UTC offset of UTC+9:30. The Northern Territory (Darwin) stays on ACST all year; South Australia (Adelaide) switches to ACDT in summer.

Is ACST the same as ACDT?

No. ACST (UTC+9:30) is standard (winter) time; ACDT (UTC+10:30) is daylight (summer) time, one hour ahead. The umbrella term “Australian Central Time” refers to whichever is in effect, so it is always safe to write Australian Central Time when you are unsure.

When do the clocks change for ACST?

In 2026, clocks go forward into ACDT on Sunday, October 4 and back into ACST on Sunday, April 5. The dates shift by a week or so each year; this page always shows the live, correct schedule.

What time is it in ACST right now?

It is currently 9:45 PM on Monday, June 22, 2026 in ACST (UTC+9:30).

Where is ACST used?

South Australia and the Northern Territory — a UTC+9:30 half-hour offset. Cities currently on this time include Adelaide.

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