What is the time difference between Delhi and Adelaide?

Adelaide is 4 hours ahead of Delhi. 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 Delhi?

Between 09:00–14:00 in Delhi, which is 13:00–18:00 in Adelaide. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Delhi observe daylight saving time?

No. Delhi stays on UTC+5:30 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 Delhi, what time is it in Adelaide?

It is 16:00 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 Delhi and Adelaide use?

Delhi uses Asia/Kolkata, currently UTC+5:30 (IST), 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 Delhi time to Adelaide time

Adelaide is 4 hours ahead of Delhi right now, so midday in Delhi lands in the afternoon in Adelaide.

Convert a time

From

Date

Time

Converted time

—

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

Every hour of a day in Delhi, and what the clock reads in Adelaide at that same moment.

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

Daylight saving time

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

Delhi

Does not observe daylight saving time

Standard: UTC+5:30

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 5 hours of shared working time: 09:00–14:00 in Delhi, which is 13:00–18:00 in Adelaide.

Delhi 09:00–14:00Adelaide 13:00–18:00

Reference

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

	Delhi	Adelaide
IANA zone	Asia/Kolkata	Australia/Adelaide
Abbreviation	IST	ACST
Standard offset	UTC+5:30	UTC+9:30
Daylight offset	—	UTC+10:30
Clock changes this year	0	2
Country	India	Australia

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

Common questions

What is the time difference between Delhi and Adelaide?: Adelaide is 4 hours ahead of Delhi. 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 Delhi?: Between 09:00–14:00 in Delhi, which is 13:00–18:00 in Adelaide. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Delhi observe daylight saving time?: No. Delhi stays on UTC+5:30 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 Delhi, what time is it in Adelaide?: It is 16:00 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 Delhi and Adelaide use?: Delhi uses Asia/Kolkata, currently UTC+5:30 (IST), 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.