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Convert Australian Eastern Standard Time to India Standard Time

Instantly convert Australian Eastern Standard Time (AEST) to India Standard Time (IST) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Australian Eastern Standard Time

03:20:55 PM

Wed, Jun 24 (AEST)

India Standard Time

10:50:55 AM

Wed, Jun 24 (IST)

IST is -4.5 hours from AEST

Convert a Specific Time

AEST

24-Hour Comparison

AESTIST
12:00 AM7.5:00 PM(-1d)
1:00 AM8.5:00 PM(-1d)
2:00 AM9.5:00 PM(-1d)
3:00 AM10.5:00 PM(-1d)
4:00 AM11.5:00 PM(-1d)
5:00 AM0.5:00 AM
6:00 AM1.5:00 AM
7:00 AM2.5:00 AM
8:00 AM3.5:00 AM
9:00 AM4.5:00 AM
10:00 AM5.5:00 AM
11:00 AM6.5:00 AM
12:00 PM7.5:00 AM
1:00 PM8.5:00 AM
2:00 PM9.5:00 AM
3:00 PM10.5:00 AM
4:00 PM11.5:00 AM
5:00 PM0.5:00 PM
6:00 PM1.5:00 PM
7:00 PM2.5:00 PM
8:00 PM3.5:00 PM
9:00 PM4.5:00 PM
10:00 PM5.5:00 PM
11:00 PM6.5:00 PM

How to Convert Australian Eastern Standard Time to India Standard Time

Formula

To convert Australian Eastern Standard Time (AEST) to India Standard Time (IST): Convert AEST to IST

About Australian Eastern Standard Time (AEST)

Australian Eastern Standard Time (AEST, IANA: Australia/Sydney) is the civil time of Australia's most populous eastern states — New South Wales (NSW), Victoria (VIC), Queensland (QLD), Tasmania (TAS), Australian Capital Territory (ACT) — set at UTC+10:00. AEST is observed in winter; NSW + VIC + TAS + ACT switch to Australian Eastern Daylight Time (AEDT = UTC+11) from the first Sunday of October to the first Sunday of April. Queensland does NOT observe DST (stays on AEST year-round) — a state-level decision affirmed by referendums in 1992. AEST serves approximately 21 million Australians — about 80% of the country's population. AEST is identical in offset to Vladivostok Time (Russia), Papua New Guinea Time (PGT), Guam-Chamorro Time (CHST), and the US-territory Northern Mariana Islands. Major AEST cities: Sydney NSW (5.4M metro — largest Australian city + ASX home), Melbourne VIC (5.1M metro — 2nd-largest), Brisbane QLD (2.6M metro — 3rd-largest, on AEST year-round), Gold Coast QLD (725K — tourist coastline), Newcastle NSW (475K), Canberra ACT (450K — federal capital), Hobart TAS (250K — Tasmanian capital). Affects: ASX trading hours 10:00-16:00 AEST, Australian Cricket / AFL game scheduling, Great Barrier Reef + Sydney Opera House tourism operating hours.

About India Standard Time (IST)

India Standard Time (IST, IANA: Asia/Kolkata) is the civil time of the Republic of India and Sri Lanka, set at UTC+5:30 — one of the world's most populous 30-minute-offset time zones. India does not observe Daylight Saving Time per the Government of India directive (a brief DST trial in 1942-1945 during WWII was discontinued; subsequent proposals from 2010-2017 were rejected by the Indian Government citing minimal energy savings + agricultural sector disruption). IST is defined as the local mean solar time at 82.5°E longitude (passing through Shankargarh fort in Uttar Pradesh, with the reference clock at the National Physical Laboratory in New Delhi per the Indian Institute of Astrophysics). The 30-minute offset is preserved because India's east-west extent (68°E to 97°E) spans ~28° of longitude — approximately 2 hours of solar time — and the central meridian is most representative for a single unified zone. IST serves approximately 1.4 billion people in India + 22 million in Sri Lanka (Sri Lanka observes SLST = UTC+5:30, identical to IST). Major cities: Mumbai (12.5M), Delhi (16.8M, NCR 29M), Bengaluru (8.4M), Hyderabad (10M), Chennai (7M), Kolkata (4.5M), Ahmedabad (5.5M), Pune (3.1M). Affects: BSE/NSE stock exchanges, IPL Indian Premier League cricket schedules.

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