IST to Busan Time Converter
KST is 3 hours 30 minutes ahead of IST. 9:00 AM IST = 12:30 PM KST.
KST is 3 hours 30 minutes ahead of IST. To convert IST to Busan Time, add 3 hours 30 minutes to the IST time: 9:00 AM IST = 12:30 PM KST.
IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Busan Time (Busan time) is used in Busan, South Korea.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Busan Time time conversion table
IST to Busan Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Busan Time | Day |
|---|---|---|
| 12:00 AM IST | 3:30 AM KST | night |
| 1:00 AM IST | 4:30 AM KST | night |
| 2:00 AM IST | 5:30 AM KST | night |
| 3:00 AM IST | 6:30 AM KST | — |
| 4:00 AM IST | 7:30 AM KST | — |
| 5:00 AM IST | 8:30 AM KST | — |
| 6:00 AM IST | 9:30 AM KST | — |
| 7:00 AM IST | 10:30 AM KST | — |
| 8:00 AM IST | 11:30 AM KST | — |
| 9:00 AM IST | 12:30 PM KST | work hours |
| 10:00 AM IST | 1:30 PM KST | work hours |
| 11:00 AM IST | 2:30 PM KST | work hours |
| 12:00 PM IST | 3:30 PM KST | work hours |
| 1:00 PM IST | 4:30 PM KST | work hours |
| 2:00 PM IST | 5:30 PM KST | — |
| 3:00 PM IST | 6:30 PM KST | — |
| 4:00 PM IST | 7:30 PM KST | — |
| 5:00 PM IST | 8:30 PM KST | — |
| 6:00 PM IST | 9:30 PM KST | — |
| 7:00 PM IST | 10:30 PM KST | night |
| 8:00 PM IST | 11:30 PM KST | night |
| 9:00 PM IST | 12:30 AM KST | next day |
| 10:00 PM IST | 1:30 AM KST | next day |
| 11:00 PM IST | 2:30 AM KST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert IST to Busan Time
Add 3 hours 30 minutes to the IST time to get Busan Time.
Example: 9:00 AM IST = 12:30 PM KST.
Across midnight: 10:00 PM IST = 1:30 AM KST (next day). The date changes, so always check the day as well as the hour.
Time difference between IST and Busan Time
The time difference between IST and Busan Time is 3 hours 30 minutes all year – KST is ahead of IST.
IST and Busan Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Busan Time does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between IST and Busan Time
IST and Busan Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM KST, inside working hours for both.
IST to Busan Time FAQ
What is the time difference between IST and Busan Time?
KST is 3 hours 30 minutes ahead of IST all year. 9:00 AM IST = 12:30 PM KST.
What is 9 AM IST in Busan Time?
9:00 AM IST is 12:30 PM KST.
What is 12 PM (noon) IST in Busan Time?
12:00 PM IST is 3:30 PM KST.
Is Busan Time ahead of or behind IST?
KST is 3 hours 30 minutes ahead of IST, so it is later in Busan Time than in IST.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
Does Busan Time change for daylight saving time?
No. Busan Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between IST and Busan Time?
IST and Busan Time share 4 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:30 PM IST lands between 12:30 PM and 5:00 PM KST, inside working hours for both.
Related conversions
Convert Busan Time to IST
Convert IST to other time zones
Convert other time zones to Busan Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.