IST to KST Time Converter
Compare IST and KST instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both India and Seoul.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| IST (India) | KST (Seoul) |
|---|---|
| 12:00 AM | 03:30 AM |
| 01:00 AM | 04:30 AM |
| 02:00 AM | 05:30 AM |
| 03:00 AM | 06:30 AM |
| 04:00 AM | 07:30 AM |
| 05:00 AM | 08:30 AM |
| 06:00 AM | 09:30 AM |
| 07:00 AM | 10:30 AM |
| 08:00 AM | 11:30 AM |
| 09:00 AM | 12:30 PM |
| 10:00 AM | 01:30 PM |
| 11:00 AM | 02:30 PM |
| 12:00 PM | 03:30 PM |
| 01:00 PM | 04:30 PM |
| 02:00 PM | 05:30 PM |
| 03:00 PM | 06:30 PM |
| 04:00 PM | 07:30 PM |
| 05:00 PM | 08:30 PM |
| 06:00 PM | 09:30 PM |
| 07:00 PM | 10:30 PM |
| 08:00 PM | 11:30 PM |
| 09:00 PM | 12:30 AM(Sat, Oct 3) |
| 10:00 PM | 01:30 AM(Sat, Oct 3) |
| 11:00 PM | 02:30 AM(Sat, Oct 3) |
Daylight saving time
Neither India nor Seoul observes daylight saving time — the offset between IST and KST is fixed year-round.
Working-hours overlap
9 AM–2 PM IST (12 PM–5 PM KST) — the shared 9-to-5 window for meetings.
Frequently asked questions
What is the time difference between IST and KST?+
KST (UTC+09:00) is currently 3 hours 30 minutes ahead of IST (UTC+05:30). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does IST or KST observe daylight saving time?+
Neither India nor Seoul observes daylight saving time, so the offset stays fixed all year. Times on this page always reflect the current local rules.
What are the best meeting hours between India and Seoul?+
Standard 9–5 working hours in India and Seoul overlap from 9 AM to 2 PM IST (12 PM–5 PM KST). Schedule calls inside this window to keep both sides in normal business hours.
How do I quickly convert IST to KST?+
Use the live clocks and 24-hour reference table above. Pick any hour on the IST row to see the matching KST time. The Event Planner also lets you pick a specific date and share it with attendees.