Mumbai to Japan
+3h 30mMumbai
ISTSOURCEJapan
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and JST on the World Map
The map below highlights the IST (India Standard Time) and JST (Japan 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.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
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.
Comparing Time Zones: Mumbai and Japan
Mumbai runs on India Standard Time (IST) at UTC+05:30. Japan runs on Japan Standard Time (JST) at UTC+09:00. That puts Mumbai 3 hours 30 minutes ahead of Japan — a difference of +3h 30m at the current offsets.
In practice, when it is 9:00 AM in Mumbai it is 12:30 PM in Japan. Midnight in Mumbai is 3:30 AM in Japan. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Mumbai to Japan time conversion table
| Mumbai (IST) | Japan (JST) | Day |
|---|---|---|
| 12:00 AM | 3:30 AM | same day |
| 6:00 AM | 9:30 AM | same day |
| 7:00 AM | 10:30 AM | same day |
| 8:00 AM | 11:30 AM | same day |
| 9:00 AM | 12:30 PM | same day |
| 12:00 PM | 3:30 PM | same day |
| 3:00 PM | 6:30 PM | same day |
| 5:00 PM | 8:30 PM | same day |
| 6:00 PM | 9:30 PM | same day |
| 9:00 PM | 12:30 AM | next day |
Why people convert Mumbai to Japan time
- Scheduling a call from Mumbai to Japan: a 10:00 AM start in Mumbai lands at 1:30 PM in Japan, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Mumbai and Japan are inside the 9-to-5 working day between 9:00 AM and 1:30 PM IST time (12:30 PM–5:00 PM JST). That is roughly 4 hours 30 minutes of usable overlap.
- Booking travel or deliveries: tracking Japan local time against Mumbai keeps pickup windows and arrival estimates honest across the +3h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a +3h 30m gap is not.
- Block 9:00 AM–1:30 PM IST as the recurring meeting window if you work primarily from Mumbai and need Japan colleagues present.
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 JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between Mumbai and Japan
Both Mumbai and Japan sit inside the 9 AM – 5 PM working day between 9:00 AM–1:30 PM IST, which is 12:30 PM–5:00 PM JST. That gives roughly 4 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Mumbai and Japan overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Mumbai is 3 hours 30 minutes ahead of Japan (IST UTC+05:30 → JST UTC+09:00). The shared working window is 9:00 AM–1:30 PM IST. Remember to re-check around daylight-saving transitions.
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 Japan?
Mumbai (IST, UTC+05:30) is 3 hours 30 minutes ahead of Japan (JST, UTC+09:00). The gap is currently +3h 30m.
How do I convert Mumbai time to Japan time?
Add +3h 30m to Mumbai local time. For example, 9:00 AM in Mumbai is 12:30 PM in Japan.
What time is it in Japan right now?
Japan uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h 30m offset from Mumbai.
What is the best time to call Japan from Mumbai?
Call between 9:00 AM and 1:30 PM IST — that maps to 12:30 PM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, Mumbai or Japan?
Mumbai is 3 hours 30 minutes ahead of Japan. When it is 12:00 PM in Mumbai it is 3:30 PM in Japan.
Do Mumbai and Japan use different time zones?
Mumbai (India) uses IST at UTC+05:30, while Japan (Japan) uses JST at UTC+09:00. The IANA identifiers are Asia/Kolkata and Asia/Tokyo.
Does daylight saving time affect the Mumbai–Japan difference?
Neither zone observes daylight saving time, so the +3h 30m offset between Mumbai and Japan 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 Japan?
Not normally. The +3h 30m gap only pushes the date over for late-evening times.
What is the time difference between Mumbai and Japan?
Japan is +3h 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 Japan in?
Japan operates on its local timezone.
What are the business hours in Mumbai?
Standard business hours in Mumbai are 9:30 AM - 5:30 PM IST.
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 JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in Mumbai, what time is it in Japan?
When it is 12:00 AM (midnight) in Mumbai (IST), it is +3h 30m later in Japan (JST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Mumbai time conversions
- mumbai to delhi
- mumbai to bangalore
- mumbai to ist
- mumbai to india
- mumbai to dubai
- mumbai to kathmandu
- mumbai to bangkok
- mumbai to singapore
- mumbai to hong kong
- mumbai to shanghai
- mumbai to beijing
- mumbai to tokyo
- mumbai to osaka
- mumbai to seoul
- mumbai to new york
- mumbai to london
- mumbai to sydney
- mumbai to los angeles
- mumbai to paris
- mumbai to berlin
- mumbai to toronto
- new york to mumbai
- london to mumbai
- dubai to mumbai
- tokyo to mumbai
- singapore to mumbai
- sydney to mumbai
- los angeles to mumbai
- paris to mumbai
- delhi to mumbai
- berlin to mumbai
- hong kong to mumbai
- toronto to mumbai
- kathmandu to mumbai
See every conversion from Mumbai →·See every conversion from Japan →