Australian Eastern Standard Time (aest) is used in Australia. The IANA timezone identifier is Australia/Brisbane.

India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

AEST to IST Time Converter

Australian Eastern Standard Time → India Standard Time

AEST = UTC+10IST = UTC+5:30

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

AEST → Ireland Standard Time (Dublin) ↗AEST → Israel Standard Time (Jerusalem) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

IST (Mumbai)

India · -4.5h

04:30

London

United Kingdom · -9h

00:00

New York

USA · -14h

19:00-1 day

Tokyo

Japan · -1h

08:00

Dubai

United Arab Emirates · -6h

03:00

How far apart are AEST (Brisbane) and IST (Mumbai)?

AEST (Brisbane) is 4 hours 30 minutes ahead of IST (Mumbai). When it's noon in AEST (Brisbane), it's 07:00 in IST (Mumbai).

AEST (Brisbane) observes Australia/Brisbane and IST (Mumbai) observes Asia/Kolkata — a 4.5 hours 30 minutes gap between them.

Daily overlap window

Both AEST (Brisbane) and IST (Mumbai) are simultaneously in business hours for 3.5 hours per day (assuming standard 9:00–17:00 working hours).

00:0006:0012:0018:0024:00

AEST (Brisbane)

IST (Mumbai)

Overlap (3.5h)

Meeting time recommendations

AEST (Brisbane) and IST (Mumbai) share 3.5 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.

14:00 Brisbane / 09:00 Mumbai✓ Both working

15:00 Brisbane / 10:00 Mumbai✓ Both working

16:00 Brisbane / 11:00 Mumbai✓ Both working

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Public holidays this year

AEST (Brisbane)7 holidays

Aug 3Picnic Day

Sep 28King's Birthday

Oct 5Labour Day

Oct 5King's Birthday

Nov 3Melbourne Cup

IST (Mumbai)

No upcoming public holidays this year.

AEST (Brisbane) and IST (Mumbai) — practical scheduling

Teams in AEST (Brisbane) (Australia) and IST (Mumbai) (India) face a 4.5-hour time difference day to day. A 3.5-hour shared business hours window makes real-time meetings feasible for both sides within their normal working day.

💡 Practical scheduling guidelines

✅

Schedule at 14:00–15:00 (AEST (Brisbane)) for a 09:00–10:00 slot in IST (Mumbai) — the sweet spot where both teams are working.

✅

Schedule at 15:00–16:00 (AEST (Brisbane)) for a 10:00–11:00 slot in IST (Mumbai) — the sweet spot where both teams are working.

✅

Schedule at 16:00–17:00 (AEST (Brisbane)) for a 11:00–12:00 slot in IST (Mumbai) — the sweet spot where both teams are working.

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any AEST (Brisbane) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

AEST (Brisbane) ↔ IST (Mumbai)

3h of business hours overlap daily (09:00–17:00)

AEST (Brisbane)

IST (Mumbai)