What is the time difference between Tokyo and Adelaide?

Adelaide is 30 minutes ahead of Tokyo. 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 Tokyo?

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

Does Tokyo observe daylight saving time?

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

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 Tokyo, what time is it in Adelaide?

It is 12:30 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 Tokyo and Adelaide use?

Tokyo uses Asia/Tokyo, currently UTC+9, 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 Tokyo time to Adelaide time

Adelaide is 30 minutes ahead of Tokyo right now, so midday in Tokyo lands in the afternoon in Adelaide.

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 Tokyo, across for Adelaide.

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

Daylight saving time

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

Tokyo

Does not observe daylight saving time

Standard: UTC+9

Adelaide

Observes daylight saving time

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

When you can actually talk

The window is 8 hours 30 minutes wide — 09:00–17:30 in Tokyo, 09:30–18:00 in Adelaide.

Tokyo 09:00–17:30Adelaide 09:30–18:00

Reference

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

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

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

Common questions

What is the time difference between Tokyo and Adelaide?: Adelaide is 30 minutes ahead of Tokyo. 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 Tokyo?: Between 09:00–17:30 in Tokyo, which is 09:30–18:00 in Adelaide. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Tokyo observe daylight saving time?: No. Tokyo stays on UTC+9 all year, so its clocks never move.
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 Tokyo, what time is it in Adelaide?: It is 12:30 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 Tokyo and Adelaide use?: Tokyo uses Asia/Tokyo, currently UTC+9, 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.