ICT to KST Converter & Meeting Planner
Quick answer: 9:00 AM ICT = 11:00 AM KST (fixed +07:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Indochina Time (ICT) and Korea Standard Time (KST)? You need to account for the standard time difference. Korea Standard Time is normally 2 hours ahead of Indochina Time. Whether you are coordinating between teams in Bangkok and Ho Chi Minh City and Seoul and Busan, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM ICT = 2:00 AM KST. The full 24-hour ICT to KST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM ICT = 5:00 PM KST.
| ICT Time | KST Time |
|---|---|
| 12:00 AM (00:00) | 2:00 AM (02:00) |
| 1:00 AM (01:00) | 3:00 AM (03:00) |
| 2:00 AM (02:00) | 4:00 AM (04:00) |
| 3:00 AM (03:00) | 5:00 AM (05:00) |
| 4:00 AM (04:00) | 6:00 AM (06:00) |
| 5:00 AM (05:00) | 7:00 AM (07:00) |
| 6:00 AM (06:00) | 8:00 AM (08:00) |
| 7:00 AM (07:00) | 9:00 AM (09:00) |
| 8:00 AM (08:00) | 10:00 AM (10:00) |
| 9:00 AM (09:00) | 11:00 AM (11:00) |
| 10:00 AM (10:00) | 12:00 PM (12:00) |
| 11:00 AM (11:00) | 1:00 PM (13:00) |
| 12:00 PM (12:00) | 2:00 PM (14:00) |
| 1:00 PM (13:00) | 3:00 PM (15:00) |
| 2:00 PM (14:00) | 4:00 PM (16:00) |
| 3:00 PM (15:00) | 5:00 PM (17:00) |
| 4:00 PM (16:00) | 6:00 PM (18:00) |
| 5:00 PM (17:00) | 7:00 PM (19:00) |
| 6:00 PM (18:00) | 8:00 PM (20:00) |
| 7:00 PM (19:00) | 9:00 PM (21:00) |
| 8:00 PM (20:00) | 10:00 PM (22:00) |
| 9:00 PM (21:00) | 11:00 PM (23:00) |
| 10:00 PM (22:00) | 12:00 AM (00:00)+1 day |
| 11:00 PM (23:00) | 1:00 AM (01:00)+1 day |
Best time to call Seoul from Bangkok
For most work calls, compare the normal business day in Bangkok (ICT) with the business day in Seoul (KST). ICT commonly covers Southeast Asia, Indochina Peninsula, while KST is mainly associated with East Asia.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 9:00 AM - 4:00 PM ICT, which corresponds to 11:00 AM - 6:00 PM KST. This window sits inside the typical ICT workday (9:00 AM - 5:00 PM) and the KST workday (9:00 AM - 6:00 PM).
- DST Safety: Neither ICT nor KST uses Daylight Saving Time in our dataset, making business-hour relationships stable year-round.
- Stock Exchange of Thailand (SET): 10:00-16:30 local time in Bangkok.
- Korea Exchange (KRX): 09:00-15:30 local time in Seoul.
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Frequently Asked Questions
What is the time difference between ICT and KST?
During standard time, Korea Standard Time is 2 hours ahead of Indochina Time.
Which countries use Indochina Time (ICT)?
Indochina Time is the official standard time for four Southeast Asian nations: Thailand, Vietnam, Cambodia, and Laos. All four countries observe a single, unified UTC+07:00 offset with no regional subdivisions.
Do Thailand and Vietnam observe Daylight Saving Time?
Neither Thailand nor Vietnam observes Daylight Saving Time, and neither do Cambodia or Laos. ICT remains fixed at UTC+07:00 throughout the entire year, with no seasonal clock changes.
Does South Korea observe Daylight Saving Time?
South Korea does not observe Daylight Saving Time and has not done so since 1988, when DST was discontinued following the Seoul Summer Olympics. KST remains fixed at UTC+9:00 every day of the year, meaning the offset between Seoul and any DST-observing country shifts by one hour twice annually when those countries change their clocks.
Are KST and JST the same?
Yes, Korea Standard Time (KST) and Japan Standard Time (JST) share the identical UTC+9:00 offset, and neither country observes Daylight Saving Time. Seoul and Tokyo run on exactly the same clock year-round, which directly supports the deep semiconductor, automotive, and consumer electronics supply chain integration between the two economies.