India Standard Time
IST means UTC+05:30 throughout the year.
Other meanings: Israel Standard Time · Irish Standard Time.
TIME ZONE CONVERTER
Seoul to IST
Time Converter
Convert Seoul, South Korea to India Standard Time. Compare dates, seasonal differences and meeting hours.
Seoul is 3h 30m ahead of IST in 2026.
9 AM Seoul = 5:30 AM IST
Selected date: November 10, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVSeoul to IST conversion table
November 10, 2026 · Date changes are marked.
View the full 24-hour table
| Seoul | IST |
|---|---|
| 12:00 AM | 8:30 PM -1 day |
| 1:00 AM | 9:30 PM -1 day |
| 2:00 AM | 10:30 PM -1 day |
| 3:00 AM | 11:30 PM -1 day |
| 4:00 AM | 12:30 AM |
| 5:00 AM | 1:30 AM |
| 6:00 AM | 2:30 AM |
| 7:00 AM | 3:30 AM |
| 8:00 AM | 4:30 AM |
| 9:00 AM | 5:30 AM |
| 10:00 AM | 6:30 AM |
| 11:00 AM | 7:30 AM |
| Seoul | IST |
|---|---|
| 12:00 PM | 8:30 AM |
| 1:00 PM | 9:30 AM |
| 2:00 PM | 10:30 AM |
| 3:00 PM | 11:30 AM |
| 4:00 PM | 12:30 PM |
| 5:00 PM | 1:30 PM |
| 6:00 PM | 2:30 PM |
| 7:00 PM | 3:30 PM |
| 8:00 PM | 4:30 PM |
| 9:00 PM | 5:30 PM |
| 10:00 PM | 6:30 PM |
| 11:00 PM | 7:30 PM |
Starting with the IST working day
These examples start on 2026-11-10 in IST.
09:00 IST12:30 →Seoul · 2026-11-10
17:00 IST20:30 →Seoul · 2026-11-10
Which time-zone meaning are we using?
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 Seoul to IST throughout 2026
09:00 in Seoul converts to 05:30 in IST on every date in 2026. The destination has the same calendar date.
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does Seoul time become a different date in IST?
Your complete source day: 2026-11-10. Each range shows which destination date to use.
Seoul · 2026-11-1000:00–03:30UTC+09:00
IST · 2026-11-0920:30–24:00UTC+05:30 Previous day
Seoul · 2026-11-1003:30–24:00UTC+09:00
IST · 2026-11-1000:00–20:30UTC+05:30 Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026Some things stay in sync.
The difference between Seoul and IST stays the same throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−3h 30m
Neither selected clock changes its UTC offset during 2026.
CLOCK CHANGES
No upcoming clock adjustment
No clock change is published for either selected time zone in the next 400 days within our supported range.
PLAN BEYOND A SINGLE DAY
Daily CSVSeoul–IST working hours through 2026
Every date calculated with your working windows. 261 selected Seoul workdays; public holidays are not applied.
Least shared time4h 30m
Most common4h 30m
Most shared time4h 30m
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in Seoul 12:30–16:00.
These starts fit both working windows on every selected Seoul workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
Seoul: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. IST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
Seoul to IST: useful answers
Does the Seoul–IST time difference change in 2026?
The difference stays constant throughout 2026: IST is 3h 30m behind compared with Seoul.
Does this conversion change the calendar date?
09:00 in Seoul on 2026-11-10 is 05:30 in IST on 2026-11-10. This selected time stays on the same date in both places. Other times can cross midnight.
Can Seoul and IST meet during working hours?
Your selected working windows share 4h 30m on 2026-11-10. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology