ACST: Australian Central Standard Time

South Australia & NT

6:43:07am

06:43 on a 24-hour clock

Monday, 28th September 2026

UTC+9:30 Australia/Adelaide

What ACST actually is

UTC+9:30, or UTC+10:30 (ACDT) in the southern summer. The Northern Territory keeps ACST all year; South Australia does not.

Daylight saving

Clocks go forward 1 hour on Sunday, 4th October 2026, at 1:59 am local time (3:00 am after the change).

Cities on ACST

Adelaide South Australia, Australia 6:43am 🌅 Mon UTC+9:30 Darwin Northern Territory, Australia 6:43am 🌅 Mon UTC+9:30

Convert ACST

ACST to EST ACST to PST ACST to IST ACST to CET ACST to London ACST to New York Convert to anywhere

Looking for UTC and GMT developer tooling (epoch conversion, ISO 8601, a free time API)? That lives on our sibling site utctime.app.

Other abbreviations

All time zones → Everywhere at UTC+9:30

Questions people ask

What time is it in ACST right now?

6:43 am (06:43) on Monday, 28th September 2026, for South Australia & NT.

What does ACST stand for?

Australian Central Standard Time. UTC+9:30, or UTC+10:30 (ACDT) in the southern summer. The Northern Territory keeps ACST all year; South Australia does not.

What is the UTC offset of ACST?

South Australia & NT: UTC+9:30.