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Données des villes par GeoNames (CC BY 4.0). Données de fuseaux horaires de la base de données des fuseaux horaires de l'IANA.

  1. WorldClockTools
  2. Convertisseur de Fuseau Horaire
  3. AEDT -> IST

Timezone converter

Convertisseur AEDT vers IST.

AEDT → ISTGap: -4h 30m3.5h 9-5 overlap

AEDT to IST currently uses Australian Eastern Time in Australia/Sydney and India Time in Asia/Kolkata as the live reference pair, with a -4h 30m live gap. AEDT to IST matters whenever Sydney and Mumbai need to coordinate across a -4h 30m gap. The AEDT side covers Australia, while IST covers India and Israel — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

Last updated Apr 26, 2026. Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.

How this is calculated

How we calculate this
The current offset for each abbreviation is resolved against the live IANA timezone rules. Conversion accounts for DST transitions on both sides, so the gap between AEDT and IST can change by an hour twice a year.
Data sources
IANA Time Zone Database (offsets, DST). City attribution from GeoNames (CC BY 4.0).
Update cadence
Page regenerates daily; live offset values reflect the moment the page is rendered.
Reverse: IST → AEDT

Ambiguity note

IST is ambiguous in this dataset, so the live converter uses Asia/Kolkata as the busiest reference zone while the city list below shows the wider label family.

From

AEDT

Australian Eastern Time

Australia/Sydney · GMT+10 +10:00

--:--:--

Major markets in this grouping include Sydney, Brisbane, Gold Coast, Newcastle.

To

IST

India Time

Asia/Kolkata · GMT+5:30 +05:30

--:--:--

Major markets in this grouping include Mumbai, Delhi, Bengaluru, Hyderabad.

Scheduling snapshot

Current gap

-4h 30m

AEDT +10:00 vs IST +05:30

9-to-5 overlap

3.5h

AEDT 1:30 PM previous day to 5:00 PM previous day

Representative countries

Australia / India, Israel, and Sri Lanka

Based on the busiest city and zone usage found in the current dataset.

Pair context

AEDT (Sydney, +10:00) to IST (Mumbai, +05:30) is currently a -4h 30m conversion. Live coverage on the AEDT side is anchored by Sydney, Brisbane, Gold Coast, and Newcastle; the IST side draws from Mumbai, Delhi, Bengaluru, and Hyderabad.

AEDT to IST matters whenever Sydney and Mumbai need to coordinate across a -4h 30m gap. The AEDT side covers Australia, while IST covers India and Israel — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

The pair sits -4h 30m apart across Oceania and Asia, which usually allows a meaningful shared workday on at least one end.

AEDT follows seasonal clock changes through Australia/Sydney, while IST stays on a fixed offset year-round. That asymmetry is the real differentiator on this page: the gap widens or narrows by an hour twice a year, so calendar invites scheduled in one season often look wrong in the other.

AEDT and IST sit 4h 30m apart, with about 3.5h of shared 9-to-5 time. That is enough room for one daily standup plus one focused working session, which is what most cross-region teams actually use this overlap for.

Market coverage on both sides

AEDT coverage on this page is led by Sydney, Australia, Brisbane, Australia, Gold Coast, Australia, and Newcastle, Australia, with 2 more in the live dataset. That mix is what makes AEDT feel anchored to Oceania and Pacific business activity in practice rather than just an abbreviation on a chart.

IST coverage is led by Mumbai, India, Delhi, India, Bengaluru, India, and Hyderabad, India, with 2 more anchoring the wider label family. Combined with the AEDT side, this conversion ends up describing cross-region coordination that uses the morning-on-one-side, afternoon-on-the-other window for live work.

Digit-Roll Converter

Adjust the time — digits roll like an odometer. Swap button flips the zones.

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Common meeting times

AEDT to IST meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

AEDTISTDay relation
9:00 AM4:30 AMMon, Apr 27same day
12:00 PM7:30 AMMon, Apr 27same day
3:00 PM10:30 AMMon, Apr 27same day
6:00 PM1:30 PMMon, Apr 27same day
9:00 PM4:30 PMMon, Apr 27same day

IST to AEDT meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

ISTAEDTDay relation
9:00 AM1:30 PMMon, Apr 27same day
12:00 PM4:30 PMMon, Apr 27same day
3:00 PM7:30 PMMon, Apr 27same day
6:00 PM10:30 PMMon, Apr 27same day
9:00 PM1:30 AMTue, Apr 28next day

Operational notes

AEDT to IST ranges from AEDT 9:00 AM (which lands at IST 4:30 AM) through AEDT 9:00 PM (IST 4:30 PM). Across this -4h 30m gap, the middle of the AEDT range usually lands in the IST afternoon — the reliable window for live calls between the two — while the early and late edges drift into IST morning or evening.

IST to AEDT ranges from IST 9:00 AM (which lands at AEDT 1:30 PM) through IST 9:00 PM (AEDT 1:30 AM). Across this -4h 30m gap, the middle of the IST range usually lands in the AEDT afternoon — the reliable window for live calls between the two — while the early and late edges drift into AEDT morning or evening.

Popular hour answers

These direct answers are here for the exact-intent searches people actually use, like “10 AM AEDT to IST” or “4 PM AEDT in IST”.

8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM9 PM

What is 8 AM AEDT in IST?

8 AM AEDT = 3:30 AM IST (03:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 AM AEDT in IST?

9 AM AEDT = 4:30 AM IST (04:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 10 AM AEDT in IST?

10 AM AEDT = 5:30 AM IST (05:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 11 AM AEDT in IST?

11 AM AEDT = 6:30 AM IST (06:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 12 PM AEDT in IST?

12 PM AEDT = 7:30 AM IST (07:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 1 PM AEDT in IST?

1 PM AEDT = 8:30 AM IST (08:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 2 PM AEDT in IST?

2 PM AEDT = 9:30 AM IST (09:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 3 PM AEDT in IST?

3 PM AEDT = 10:30 AM IST (10:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 4 PM AEDT in IST?

4 PM AEDT = 11:30 AM IST (11:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 5 PM AEDT in IST?

5 PM AEDT = 12:30 PM IST (12:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 6 PM AEDT in IST?

6 PM AEDT = 1:30 PM IST (13:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 PM AEDT in IST?

9 PM AEDT = 4:30 PM IST (16:30). On today's live calendar that lands on Mon, Apr 27 in IST, which means the answer is a same day conversion rather than a static offset lookup.

Overlap window and DST radar

The live gap is -4h 30m right now, based on Australia/Sydney at +10:00 and Asia/Kolkata at +05:30. Australia/Sydney changes offset on October 4, 2026, so the gap moves to -5h 30m after that transition.

The most usable workday block right now is about 3.5 hours: AEDT 1:30 PM previous day to 5:00 PM previous day, which lines up with IST 9:00 AM previous day to 12:30 PM previous day.

Australia/Sydney changes from +11:00 (GMT+11) to +11:00 (GMT+11) on October 4, 2026 at about 3:10 AM.

Reference zones

Australia/Sydney

GMT+10 · +10:00

Asia/Kolkata

GMT+5:30 · +05:30

These are the busiest live references selected from the abbreviation families on this page.

Tableau de Conversion

AEDTIST
10:0005:30
11:0006:30
12:0007:30
13:0008:30
14:0009:30
15:0010:30
16:0011:30
17:0012:30
18:0013:30
19:0014:30
20:0015:30
21:0016:30
22:0017:30
23:0018:30
00:0019:30
01:0020:30
02:0021:30
03:0022:30
04:0023:30
05:0000:30
06:0001:30
07:0002:30
08:0003:30
09:0004:30

Top cities using AEDT

Countries represented here include Australia.

SydneyAustraliaBrisbaneAustraliaGold CoastAustraliaNewcastleAustraliaCanberraAustraliaCentral CoastAustraliaSunshine CoastAustraliaLogan CityAustraliaWollongongAustraliaTownsvilleAustralia

Top cities using IST

Countries represented here include India, Israel, and Sri Lanka.

MumbaiIndiaDelhiIndiaBengaluruIndiaHyderabadIndiaAhmedabadIndiaChennaiIndiaKolkataIndiaSuratIndiaPuneIndiaJaipurIndia

FAQ

How many hours is IST ahead of AEDT?
IST is currently -4h 30m relative to AEDT, using Australia/Sydney and Asia/Kolkata as the live reference zones on this page.
What is the best workday overlap between AEDT and IST?
The current 9-to-5 overlap is about 3.5 hours: AEDT 1:30 PM previous day to 5:00 PM previous day, which matches IST 9:00 AM previous day to 12:30 PM previous day.
Does the AEDT-IST time difference change during DST?
The live gap is -4h 30m right now, based on Australia/Sydney at +10:00 and Asia/Kolkata at +05:30. Australia/Sydney changes offset on October 4, 2026, so the gap moves to -5h 30m after that transition.
Which cities commonly use AEDT and IST?
AEDT commonly covers cities such as Sydney, Brisbane, Gold Coast, and Newcastle, while IST commonly covers cities such as Mumbai, Delhi, Bengaluru, and Hyderabad.
Should I use AEDT/IST or exact IANA zones?
Use the abbreviations for a quick read, but use exact IANA zones such as Australia/Sydney and Asia/Kolkata when you need something precise in software, travel plans, or long-range scheduling.
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Conversions Associées

EST → ISTEST → AEDTPST → ISTPST → AEDTCST → ISTCST → AEDTMST → ISTMST → AEDTGMT → ISTGMT → AEDTUTC → ISTUTC → AEDT

Related planning pages

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Interactive converter

Move from this static pair into the full timezone converter with more cities and abbreviations.

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Use compare pages when the practical question is overlap, not just offset arithmetic.

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Browse city pages

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