Seoul to Mumbai
-3h 30mSeoul
KSTSOURCEMumbai
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and IST on the World Map
The map below highlights the KST (Korea Standard Time) and IST (India Standard Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
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.
About Seoul
WikipediaSeoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
Seoul has the fastest average internet speed in the world.
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.
Seoul to Mumbai Time Difference – Complete Guide
Seoul runs on Korean Standard Time (KST) at UTC+09:00. Mumbai runs on India Standard Time (IST) at UTC+05:30. That puts Seoul 3 hours 30 minutes behind Mumbai — a difference of -3h 30m at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 5:30 AM in Mumbai. Midnight in Seoul is 8:30 PM in Mumbai. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Seoul to Mumbai time conversion table
| Seoul (KST) | Mumbai (IST) | Day |
|---|---|---|
| 12:00 AM | 8:30 PM | previous day |
| 6:00 AM | 2:30 AM | same day |
| 7:00 AM | 3:30 AM | same day |
| 8:00 AM | 4:30 AM | same day |
| 9:00 AM | 5:30 AM | same day |
| 12:00 PM | 8:30 AM | same day |
| 3:00 PM | 11:30 AM | same day |
| 5:00 PM | 1:30 PM | same day |
| 6:00 PM | 2:30 PM | same day |
| 9:00 PM | 5:30 PM | same day |
Why people convert Seoul to Mumbai time
- Scheduling a call from Seoul to Mumbai: a 10:00 AM start in Seoul lands at 6:30 AM in Mumbai, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Seoul and Mumbai are inside the 9-to-5 working day between 12:30 PM and 5:00 PM KST time (9:00 AM–1:30 PM IST). That is roughly 4 hours 30 minutes of usable overlap.
- Watching a live event or market open: Seoul viewers need 5:30 AM in Mumbai to catch a 9:00 AM start there, and 3:30 AM if the event is anchored to Seoul.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -3h 30m gap is not.
- Block 12:30 PM–5:00 PM KST as the recurring meeting window if you work primarily from Seoul and need Mumbai colleagues present.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
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.
Best time to call between Seoul and Mumbai
Both Seoul and Mumbai sit inside the 9 AM – 5 PM working day between 12:30 PM–5:00 PM KST, which is 9:00 AM–1:30 PM IST. That gives roughly 4 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Seoul and Mumbai overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Seoul is 3 hours 30 minutes behind Mumbai (KST UTC+09:00 → IST UTC+05:30). The shared working window is 12:30 PM–5:00 PM KST. 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 Seoul and Mumbai?
Seoul (KST, UTC+09:00) is 3 hours 30 minutes behind Mumbai (IST, UTC+05:30). The gap is currently -3h 30m.
How do I convert Seoul time to Mumbai time?
Add -3h 30m to Seoul local time. For example, 9:00 AM in Seoul is 5:30 AM in Mumbai.
What time is it in Mumbai right now?
Mumbai uses IST at UTC+05:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h 30m offset from Seoul.
What is the best time to call Mumbai from Seoul?
Call between 12:30 PM and 5:00 PM KST — that maps to 9:00 AM–1:30 PM IST and keeps both parties inside the working day.
Which is behind, Seoul or Mumbai?
Seoul is 3 hours 30 minutes behind Mumbai. When it is 12:00 PM in Seoul it is 8:30 AM in Mumbai.
Do Seoul and Mumbai use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while Mumbai (India) uses IST at UTC+05:30. The IANA identifiers are Asia/Seoul and Asia/Kolkata.
Does daylight saving time affect the Seoul–Mumbai difference?
Neither zone observes daylight saving time, so the -3h 30m offset between Seoul and Mumbai is fixed all year.
Which other cities share Seoul's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, Seoul's zone?
KST is used in South Korea, North Korea.
Is there a day difference between Seoul and Mumbai?
Not normally. The -3h 30m gap only pushes the date over the previous day.
What is the time difference between Seoul and Mumbai?
Mumbai is -3h 30m from Seoul.
What timezone is Seoul in?
Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
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 are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
What are the business hours in Mumbai?
Standard business hours in Mumbai are 9:30 AM - 5:30 PM IST.
What is the best time to schedule a call between Seoul and Mumbai?
The best overlap for a call is when both cities are in business hours. Seoul works 9:00 AM - 6:00 PM KST and Mumbai works 9:30 AM - 5:30 PM IST (-3h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Seoul and Mumbai?
Seoul uses KRW (₩) while Mumbai uses INR (₹). Check current exchange rates when planning travel or business between these cities.
How do Seoul and Mumbai compare in size?
Seoul has a population of approximately 9.7 million (metro: 25.5 million), while Mumbai has approximately 12.4 million (metro: 21.3 million).
What are the major landmarks in Seoul and Mumbai?
Seoul is known for Gyeongbokgung Palace, N Seoul Tower, Bukchon Hanok Village. Mumbai is famous for Gateway of India, Chhatrapati Shivaji Terminus, Marine Drive.
Do Seoul and Mumbai have stock exchanges?
Yes. Seoul has the KRX (Korea Exchange) and Mumbai has the BSE (Bombay Stock Exchange), NSE. The -3h 30m time difference affects trading hour overlaps between these exchanges.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the IST timezone?
Major cities in the IST timezone include Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad.
What is the UTC offset for IST?
India Standard Time (IST) is at UTC+05:30.
What should I know about the IST timezone?
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.
When is it midnight in Seoul, what time is it in Mumbai?
When it is 12:00 AM (midnight) in Seoul (KST), it is -3h 30m later in Mumbai (IST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Seoul time conversions
- seoul to kst
- seoul to south korea
- seoul to dubai
- seoul to delhi
- seoul to bangalore
- seoul to kathmandu
- seoul to bangkok
- seoul to singapore
- seoul to hong kong
- seoul to shanghai
- seoul to beijing
- seoul to tokyo
- seoul to osaka
- seoul to new york
- seoul to london
- seoul to sydney
- seoul to los angeles
- seoul to paris
- seoul to berlin
- seoul to toronto
- new york to seoul
- london to seoul
- dubai to seoul
- tokyo to seoul
- singapore to seoul
- sydney to seoul
- los angeles to seoul
- paris to seoul
- delhi to seoul
- mumbai to seoul
- berlin to seoul
- hong kong to seoul
- toronto to seoul
- kathmandu to seoul
See every conversion from Seoul →·See every conversion from Mumbai →