Mumbai to Sydney
+4h 30mMumbai
ISTSOURCESydney
AESTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and AEST on the World Map
The map below highlights the IST (India Standard Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •Queensland does not observe daylight saving time, staying on AEST year-round.
- •Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
- •The Australian Securities Exchange (ASX) operates on AEST/AEDT.
- •AEST is 15 hours ahead of EST during winter.
About Mumbai
WikipediaMumbai operates on India Standard Time (IST), UTC+5:30. As India's financial capital and home to BSE (Asia's oldest stock exchange), Mumbai timing is crucial for Asia markets.
The Mumbai local trains carry over 7.5 million passengers daily.
About Sydney
WikipediaSydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
Sydney is one of the first major cities to welcome the New Year.
Everything You Need to Know About Mumbai and Sydney Time
Mumbai runs on India Standard Time (IST) at UTC+05:30. Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts Mumbai 4 hours 30 minutes ahead of Sydney — a difference of +4h 30m at the current offsets.
In practice, when it is 9:00 AM in Mumbai it is 1:30 PM in Sydney. Midnight in Mumbai is 4:30 AM in Sydney. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Mumbai to Sydney time conversion table
| Mumbai (IST) | Sydney (AEST) | Day |
|---|---|---|
| 12:00 AM | 4:30 AM | same day |
| 6:00 AM | 10:30 AM | same day |
| 7:00 AM | 11:30 AM | same day |
| 8:00 AM | 12:30 PM | same day |
| 9:00 AM | 1:30 PM | same day |
| 12:00 PM | 4:30 PM | same day |
| 3:00 PM | 7:30 PM | same day |
| 5:00 PM | 9:30 PM | same day |
| 6:00 PM | 10:30 PM | same day |
| 9:00 PM | 1:30 AM | next day |
Why people convert Mumbai to Sydney time
- Scheduling a call from Mumbai to Sydney: a 10:00 AM start in Mumbai lands at 2:30 PM in Sydney, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Mumbai and Sydney are inside the 9-to-5 working day between 9:00 AM and 12:30 PM IST time (1:30 PM–5:00 PM AEST). That is roughly 3 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Mumbai is 12:30 AM in Sydney makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a +4h 30m gap is not.
- Block 9:00 AM–12:30 PM IST as the recurring meeting window if you work primarily from Mumbai and need Sydney colleagues present.
- Sydney: Clocks spring forward on Sat, Oct 3, 2026. Any meeting series spanning that date will shift by an hour in local time.
About IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
About AEST (Australian Eastern Standard Time)
Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.
Best time to call between Mumbai and Sydney
Both Mumbai and Sydney sit inside the 9 AM – 5 PM working day between 9:00 AM–12:30 PM IST, which is 1:30 PM–5:00 PM AEST. That gives roughly 3 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Mumbai and Sydney overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
Mumbai is 4 hours 30 minutes ahead of Sydney (IST UTC+05:30 → AEST UTC+10:00). The shared working window is 9:00 AM–12:30 PM IST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Mumbai
Does not observe DST
Sydney
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Mumbai and Sydney?
Mumbai (IST, UTC+05:30) is 4 hours 30 minutes ahead of Sydney (AEST, UTC+10:00). The gap is currently +4h 30m.
How do I convert Mumbai time to Sydney time?
Add +4h 30m to Mumbai local time. For example, 9:00 AM in Mumbai is 1:30 PM in Sydney.
What time is it in Sydney right now?
Sydney uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h 30m offset from Mumbai.
What is the best time to call Sydney from Mumbai?
Call between 9:00 AM and 12:30 PM IST — that maps to 1:30 PM–5:00 PM AEST and keeps both parties inside the working day.
Which is ahead, Mumbai or Sydney?
Mumbai is 4 hours 30 minutes ahead of Sydney. When it is 12:00 PM in Mumbai it is 4:30 PM in Sydney.
Do Mumbai and Sydney use different time zones?
Mumbai (India) uses IST at UTC+05:30, while Sydney (Australia) uses AEST at UTC+10:00. The IANA identifiers are Asia/Kolkata and Australia/Sydney.
Does daylight saving time affect the Mumbai–Sydney difference?
Neither zone observes daylight saving time, so the +4h 30m offset between Mumbai and Sydney is fixed all year.
Which other cities share Mumbai's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, Mumbai's zone?
IST is used in India, Sri Lanka.
Is there a day difference between Mumbai and Sydney?
Not normally. The +4h 30m gap only pushes the date over for late-evening times.
What is the time difference between Mumbai and Sydney?
Sydney is +4h 30m from Mumbai.
What timezone is Mumbai in?
Mumbai operates on India Standard Time (IST), UTC+5:30. As India's financial capital and home to BSE (Asia's oldest stock exchange), Mumbai timing is crucial for Asia markets.
What timezone is Sydney in?
Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
What are the business hours in Mumbai?
Standard business hours in Mumbai are 9:30 AM - 5:30 PM IST.
What are the business hours in Sydney?
Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.
What is the best time to schedule a call between Mumbai and Sydney?
The best overlap for a call is when both cities are in business hours. Mumbai works 9:30 AM - 5:30 PM IST and Sydney works 9:00 AM - 5:00 PM AEST (+4h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Mumbai and Sydney?
Mumbai uses INR (₹) while Sydney uses AUD (A$). Check current exchange rates when planning travel or business between these cities.
How do Mumbai and Sydney compare in size?
Mumbai has a population of approximately 12.4 million (metro: 21.3 million), while Sydney has approximately 5.4 million (metro: 5.4 million).
What are the major landmarks in Mumbai and Sydney?
Mumbai is known for Gateway of India, Chhatrapati Shivaji Terminus, Marine Drive. Sydney is famous for Sydney Opera House, Sydney Harbour Bridge, Bondi Beach.
Do Mumbai and Sydney have stock exchanges?
Yes. Mumbai has the BSE (Bombay Stock Exchange), NSE and Sydney has the ASX (Australian Securities Exchange). The +4h 30m time difference affects trading hour overlaps between these exchanges.
Which countries use IST (India Standard Time)?
IST is used in India, Sri Lanka.
Does IST observe daylight saving time?
No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.
What are some interesting facts about IST?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
Which cities are in the AEST timezone?
Major cities in the AEST timezone include Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
What is the UTC offset for AEST?
Australian Eastern Standard Time (AEST) is at UTC+10:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEST timezone?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
When is it midnight in Mumbai, what time is it in Sydney?
When it is 12:00 AM (midnight) in Mumbai (IST), it is +4h 30m later in Sydney (AEST).
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