Convert India Standard Time to Australian Western Standard Time
Instantly convert India Standard Time (IST) to Australian Western Standard Time (AWST) with our free online calculator.
India Standard Time
10:50:51 AM
Wed, Jun 24 (IST)
Australian Western Standard Time
01:20:51 PM
Wed, Jun 24 (AWST)
Convert a Specific Time
24-Hour Comparison
| IST | AWST |
|---|---|
| 12:00 AM | 2.5:00 AM |
| 1:00 AM | 3.5:00 AM |
| 2:00 AM | 4.5:00 AM |
| 3:00 AM | 5.5:00 AM |
| 4:00 AM | 6.5:00 AM |
| 5:00 AM | 7.5:00 AM |
| 6:00 AM | 8.5:00 AM |
| 7:00 AM | 9.5:00 AM |
| 8:00 AM | 10.5:00 AM |
| 9:00 AM | 11.5:00 AM |
| 10:00 AM | 0.5:00 PM |
| 11:00 AM | 1.5:00 PM |
| 12:00 PM | 2.5:00 PM |
| 1:00 PM | 3.5:00 PM |
| 2:00 PM | 4.5:00 PM |
| 3:00 PM | 5.5:00 PM |
| 4:00 PM | 6.5:00 PM |
| 5:00 PM | 7.5:00 PM |
| 6:00 PM | 8.5:00 PM |
| 7:00 PM | 9.5:00 PM |
| 8:00 PM | 10.5:00 PM |
| 9:00 PM | 11.5:00 PM |
| 10:00 PM | 0.5:00 AM(+1d) |
| 11:00 PM | 1.5:00 AM(+1d) |
How to Convert India Standard Time to Australian Western Standard Time
Formula
To convert India Standard Time (IST) to Australian Western Standard Time (AWST): Convert IST to AWST
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.
About Australian Western Standard Time (AWST)
Australian Western Standard Time (AWST, IANA: Australia/Perth) is the civil time of Western Australia (WA), set at UTC+8:00 year-round (no DST). Western Australia has rejected Daylight Saving Time in four separate referendums (1975, 1984, 1992, 2009 — each time defeated), so AWST is observed without seasonal change despite the rest of Australia (eastern states) observing AEDT in summer. The unusual situation creates a 3-hour offset between Perth (AWST = UTC+8) and Sydney (AEDT = UTC+11) in summer, vs. the standard 2-hour offset in winter (AWST UTC+8 vs AEST UTC+10). AWST is identical in offset to China Standard Time (CST), Singapore Time (SGT), Hong Kong Time (HKT), Philippine Time (PHT), Malaysia Time (MYT). AWST serves approximately 2.8 million Western Australian residents — the world's largest sub-national area on a single time zone (WA is 2.527 million km² = larger than Western Europe). Major AWST cities: Perth (2.1M metro — Australia's 4th-largest city), Mandurah (95K), Bunbury (75K), Geraldton (40K), Kalgoorlie-Boulder (30K — gold mining hub), Albany (35K — historic whaling port), Broome (15K — pearl industry + tourism), Karratha (15K — Pilbara iron-ore export hub). Affects: ASX (Australian Securities Exchange) operations from Perth offices, Rio Tinto / BHP Pilbara iron-ore shipping coordination.