AWST to IST Converter & Meeting Planner
Quick answer: 9:00 AM AWST = 6:30 AM IST (fixed +08:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Australian Western Standard Time (AWST) and Indian Standard Time (IST)? You need to account for the standard time difference. Indian Standard Time is normally 2.5 hours behind Australian Western Standard Time. Whether you are coordinating between teams in Perth and Bunbury and Mumbai and New Delhi, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM AWST = 9:30 PM IST. The full 24-hour AWST to IST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM AWST = 12:30 PM IST.
| AWST Time | IST Time |
|---|---|
| 12:00 AM (00:00) | 9:30 PM (21:30)-1 day |
| 1:00 AM (01:00) | 10:30 PM (22:30)-1 day |
| 2:00 AM (02:00) | 11:30 PM (23:30)-1 day |
| 3:00 AM (03:00) | 12:30 AM (00:30) |
| 4:00 AM (04:00) | 1:30 AM (01:30) |
| 5:00 AM (05:00) | 2:30 AM (02:30) |
| 6:00 AM (06:00) | 3:30 AM (03:30) |
| 7:00 AM (07:00) | 4:30 AM (04:30) |
| 8:00 AM (08:00) | 5:30 AM (05:30) |
| 9:00 AM (09:00) | 6:30 AM (06:30) |
| 10:00 AM (10:00) | 7:30 AM (07:30) |
| 11:00 AM (11:00) | 8:30 AM (08:30) |
| 12:00 PM (12:00) | 9:30 AM (09:30) |
| 1:00 PM (13:00) | 10:30 AM (10:30) |
| 2:00 PM (14:00) | 11:30 AM (11:30) |
| 3:00 PM (15:00) | 12:30 PM (12:30) |
| 4:00 PM (16:00) | 1:30 PM (13:30) |
| 5:00 PM (17:00) | 2:30 PM (14:30) |
| 6:00 PM (18:00) | 3:30 PM (15:30) |
| 7:00 PM (19:00) | 4:30 PM (16:30) |
| 8:00 PM (20:00) | 5:30 PM (17:30) |
| 9:00 PM (21:00) | 6:30 PM (18:30) |
| 10:00 PM (22:00) | 7:30 PM (19:30) |
| 11:00 PM (23:00) | 8:30 PM (20:30) |
Best time to call Mumbai from Perth
For most work calls, compare the normal business day in Perth (AWST) with the business day in Mumbai (IST). AWST commonly covers Oceania, Australia, while IST is mainly associated with South Asia.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 12:00 PM - 5:00 PM AWST, which corresponds to 9:30 AM - 2:30 PM IST. This window sits inside the typical AWST workday (8:30 AM - 5:00 PM) and the IST workday (9:30 AM - 6:30 PM).
- DST Safety: Neither AWST nor IST uses Daylight Saving Time in our dataset, making business-hour relationships stable year-round.
- Australian Securities Exchange (ASX) - Local Perth Hours: 08:00-14:00 local time in Perth.
- Bombay Stock Exchange (BSE): 09:15-15:30 local time in Mumbai.
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Frequently Asked Questions
What is the time difference between AWST and IST?
During standard time, Indian Standard Time is 2.5 hours behind Australian Western Standard Time.
Does Perth observe Daylight Saving Time?
Perth and the rest of Western Australia do not observe Daylight Saving Time. Western Australians have voted against DST in multiple state referendums — most recently in 2009 — and AWST remains permanently fixed at UTC+08:00 throughout the year.
Are AWST and China Standard Time the same?
AWST and China Standard Time (CST) share the exact same UTC+08:00 offset, meaning Perth and Beijing operate on an identical clock. The same applies to Singapore Time (SGT) and Malaysia Time (MYT) — all three are perfectly synchronized with AWST, eliminating offset calculations entirely for the resource and commodity trade flows that connect Perth to these major Asian markets.
Does India observe Daylight Saving Time (DST)?
India does not observe Daylight Saving Time and has not done so since 1945. IST remains fixed at UTC+5:30 every day of the year, meaning the offset between India and any DST-observing country shifts by one hour twice annually when those countries change their clocks.
Why does IST have a 30-minute offset?
India chose the 82.5° East meridian — which passes through Mirzapur in Uttar Pradesh — as its central reference longitude, as it bisects the subcontinent geographically. That meridian sits exactly 5 hours and 30 minutes ahead of the Prime Meridian in Greenwich, producing the UTC+5:30 offset that has defined IST since 1906.