What is the time difference between Sydney and Adelaide?

Adelaide is 30 minutes behind Sydney. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Adelaide from Sydney?

Between 10:00–18:00 in Sydney, which is 09:30–17:30 in Adelaide. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Sydney observe daylight saving time?

Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.

Does Adelaide observe daylight saving time?

Yes. Adelaide runs on UTC+9:30 in winter and UTC+10:30 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.

If it is midday in Sydney, what time is it in Adelaide?

It is 11:30 in Adelaide, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Sydney and Adelaide use?

Sydney uses Australia/Sydney, currently UTC+10 (AEST), and Adelaide uses Australia/Adelaide, currently UTC+9:30 (ACST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Sydney time to Adelaide time

Right now Adelaide runs 30 minutes behind Sydney. That gap is not fixed: it moves when either city changes its clocks.

Convert a time

From

Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

The whole day mapped across: read down the left for Sydney, across for Adelaide.

Sydney	Adelaide
00:00	23:30previous day
01:00	00:30
02:00	01:30
03:00	02:30
04:00	03:30
05:00	04:30
06:00	05:30
07:00	06:30
08:00	07:30
09:00	08:30
10:00	09:30
11:00	10:30
12:00	11:30
13:00	12:30
14:00	13:30
15:00	14:30
16:00	15:30
17:00	16:30
18:00	17:30
19:00	18:30
20:00	19:30
21:00	20:30
22:00	21:30
23:00	22:30

Daylight saving time

Sydney and Adelaide both observe daylight saving. Where their change dates differ, so does the gap between them for the weeks in between.

Sydney

Observes daylight saving time

Standard: UTC+10
Daylight: UTC+11
Next change: 2026-10-04 +60m

Adelaide

Observes daylight saving time

Standard: UTC+9:30
Daylight: UTC+10:30
Next change: 2026-10-04 +60m

When you can actually talk

You have 8 hours of shared working time: 10:00–18:00 in Sydney, which is 09:30–17:30 in Adelaide.

Sydney 10:00–18:00Adelaide 09:30–17:30
Sydney 09:30–10:00Adelaide 09:00–09:30

Reference

The zone identifiers and offsets behind everything above.

	Sydney	Adelaide
IANA zone	Australia/Sydney	Australia/Adelaide
Abbreviation	AEST	ACST
Standard offset	UTC+10	UTC+9:30
Daylight offset	UTC+11	UTC+10:30
Clock changes this year	2	2
Country	Australia	Australia

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between Sydney and Adelaide?: Adelaide is 30 minutes behind Sydney. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Adelaide from Sydney?: Between 10:00–18:00 in Sydney, which is 09:30–17:30 in Adelaide. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Sydney observe daylight saving time?: Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.
Does Adelaide observe daylight saving time?: Yes. Adelaide runs on UTC+9:30 in winter and UTC+10:30 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.
If it is midday in Sydney, what time is it in Adelaide?: It is 11:30 in Adelaide, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Sydney and Adelaide use?: Sydney uses Australia/Sydney, currently UTC+10 (AEST), and Adelaide uses Australia/Adelaide, currently UTC+9:30 (ACST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.