What is the time difference between Adelaide and Tokyo?

Tokyo is 30 minutes behind Adelaide. 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 Tokyo from Adelaide?

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

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.

Does Tokyo observe daylight saving time?

No. Tokyo stays on UTC+9 all year, so its clocks never move.

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

It is 11:30 in Tokyo, 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 Adelaide and Tokyo use?

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

Convert Adelaide time to Tokyo time

Right now Tokyo runs 30 minutes behind Adelaide. 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 Adelaide, across for Tokyo.

Adelaide	Tokyo
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

Tokyo keeps one offset all year while Adelaide moves twice. That is the whole reason this difference is seasonal.

Adelaide

Observes daylight saving time

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

Tokyo

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

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

Adelaide 09:30–18:00Tokyo 09:00–17:30

Reference

The underlying data, in case you need to put it in a calendar invitation or a configuration file.

	Adelaide	Tokyo
IANA zone	Australia/Adelaide	Asia/Tokyo
Abbreviation	ACST	UTC+9
Standard offset	UTC+9:30	UTC+9
Daylight offset	UTC+10:30	—
Clock changes this year	2	0
Country	Australia	Japan

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

Common questions

What is the time difference between Adelaide and Tokyo?: Tokyo is 30 minutes behind Adelaide. 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 Tokyo from Adelaide?: Between 09:30–18:00 in Adelaide, which is 09:00–17:30 in Tokyo. That is the only stretch where both cities are inside a 09:00–18:00 day.
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.
Does Tokyo observe daylight saving time?: No. Tokyo stays on UTC+9 all year, so its clocks never move.
If it is midday in Adelaide, what time is it in Tokyo?: It is 11:30 in Tokyo, 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 Adelaide and Tokyo use?: Adelaide uses Australia/Adelaide, currently UTC+9:30 (ACST), and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.