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

SYDNEY to IST Time Converter

Q: Where is sydney used?

SYDNEY (Sydney) (sydney) is used in Australia. The IANA timezone identifier is Australia/Sydney.

SYDNEY (Sydney) → India Standard Time

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

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

SYDNEY → Ireland Standard Time (Dublin) ↗SYDNEY → 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

Sydney ↔ IST (Mumbai) — time offset

Sydney is 4 hours 30 minutes ahead of IST (Mumbai). Midday in Sydney lines up with 07:00 in IST (Mumbai).

Sydney is in the Australia/Sydney timezone. IST (Mumbai) is in Asia/Kolkata. The difference is 4.5 hours 30 minutes.

Mutual working hours

There is a 3.5-hour window each day where both Sydney and IST (Mumbai) are within standard business hours (09:00–17:00).

00:0006:0012:0018:0024:00

Sydney

IST (Mumbai)

Overlap (3.5h)

When to schedule across time zones

Both Sydney and IST (Mumbai) are in standard hours simultaneously for 3.5h per day. 3 recommended slots shown below.

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

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

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

Based on standard 09:00–17:00 working hours in each location's local time.

Upcoming public holidays

Sydney7 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.

How to work with Sydney and IST (Mumbai) time zones

Working across Sydney (Australia) and IST (Mumbai) (India) involves a 4.5-hour gap. The good news: there is a 3.5-hour mutual window in standard business hours that lets both sides collaborate without anyone joining at an unreasonable hour.

💡 How to schedule across these time zones

✅

14:00–15:00 in Sydney = 09:00–10:00 in IST (Mumbai). Both sides are in standard business hours during this window.

✅

15:00–16:00 in Sydney = 10:00–11:00 in IST (Mumbai). Both sides are in standard business hours during this window.

✅

16:00–17:00 in Sydney = 11:00–12:00 in IST (Mumbai). Both sides are in standard business hours during this window.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in Sydney. The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

SYDNEY (Sydney) ↔ IST (Mumbai)

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

SYDNEY (Sydney)

IST (Mumbai)