Live Synchronized Time Difference
SeoultoChennaiTime Difference
🇰🇷
Seoul
South Korea (GMT+9)00:10:23UTC+9:00
🇮🇳
Chennai
India (GMT+5:30)20:40:23UTC+5:30
Direct Distance5,352 km (3,326 miles)
Estimated Flight Time~6.8 hours
Business Overlap4 overlapping hours (9am–5pm)
Mutual Working Window: 4 Overlapping Hours
Recommended calling window between Seoul and Chennai
Off-Peak Calling Window
Seoul Time
1:00 PM – 5:00 PM
Chennai Time
9:00 AM – 1:00 PM
Both locations share 4 overlapping standard business hours (9:00 AM – 5:00 PM). This is the premier window for real-time video conferences, corporate calls, and instant collaboration without outside-hours disruption.
24-Hour Schedule Conversion Matrix
Compare every hour of the day between Seoul and Chennai.
Work (9am-5pm)ShoulderSleep / Off
| Seoul Time (South Korea) | Chennai Time (India) | Status & Recommendation |
|---|---|---|
| 00:00AM | 20:00PM-1 day | ⚪ Outside Work Hours |
| 01:00AM | 21:00PM-1 day | ⚪ Outside Work Hours |
| 02:00AM | 22:00PM-1 day | ⚪ Outside Work Hours |
| 03:00AM | 23:00PM-1 day | ⚪ Outside Work Hours |
| 04:00AM | 00:00AM | ⚪ Outside Work Hours |
| 05:00AM | 01:00AM | ⚪ Outside Work Hours |
| 06:00AM | 02:00AM | ⚪ Outside Work Hours |
| 07:00AM | 03:00AM | ⚪ Outside Work Hours |
| 08:00AM | 04:00AM | ⚪ Outside Work Hours |
| 09:00AM | 05:00AM | ⚪ Outside Work Hours |
| 10:00AM | 06:00AM | ⚪ Outside Work Hours |
| 11:00AM | 07:00AM | 🟡 Feasible (Shoulder Hour) |
| 12:00PM | 08:00AM | 🟡 Feasible (Shoulder Hour) |
| 13:00PM | 09:00AM | 🟢 Ideal Meeting Window |
| 14:00PM | 10:00AM | 🟢 Ideal Meeting Window |
| 15:00PM | 11:00AM | 🟢 Ideal Meeting Window |
| 16:00PM | 12:00PM | 🟢 Ideal Meeting Window |
| 17:00PM | 13:00PM | ⚪ Outside Work Hours |
| 18:00PM | 14:00PM | ⚪ Outside Work Hours |
| 19:00PM | 15:00PM | ⚪ Outside Work Hours |
| 20:00PM | 16:00PM | ⚪ Outside Work Hours |
| 21:00PM | 17:00PM | ⚪ Outside Work Hours |
| 22:00PM | 18:00PM | ⚪ Outside Work Hours |
| 23:00PM | 19:00PM | ⚪ Outside Work Hours |
Frequently Asked Questions
What is the time difference between Seoul and Chennai?
Chennai is 3 hours 30 minutes behind Seoul.
What is the best time to schedule a cross-border meeting between Seoul and Chennai?
There are 4 overlapping standard business hours (09:00 - 17:00) between Seoul and Chennai. The optimal window is when both parties are in their core working shifts.
Does daylight saving time (DST) affect the time difference between Seoul and Chennai?
Yes. If either South Korea or India observes seasonal Daylight Saving Time transitions, the offset difference shifts by one hour on scheduled transition dates.