ICT to JST Converter & Meeting Planner
Quick answer: 9:00 AM ICT = 11:00 AM JST (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 Japan Standard Time (JST)? You need to account for the standard time difference. Japan Standard Time is normally 2 hours ahead of Indochina Time. Whether you are coordinating between teams in Bangkok and Ho Chi Minh City and Tokyo and Osaka, 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 JST. The full 24-hour ICT to JST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM ICT = 5:00 PM JST.
| ICT Time | JST 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 Tokyo from Bangkok
For most work calls, compare the normal business day in Bangkok (ICT) with the business day in Tokyo (JST). ICT commonly covers Southeast Asia, Indochina Peninsula, while JST 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 JST. This window sits inside the typical ICT workday (9:00 AM - 5:00 PM) and the JST workday (9:00 AM - 6:00 PM).
- DST Safety: Neither ICT nor JST 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.
- Tokyo Stock Exchange (TSE): 09:00-15:00 local time in Tokyo.
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Frequently Asked Questions
What is the time difference between ICT and JST?
During standard time, Japan 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 Japan observe Daylight Saving Time?
Japan has not observed Daylight Saving Time since 1951, when the practice introduced during the Allied occupation was abolished by the Japanese government. JST has remained fixed at UTC+9:00 ever since, and there is no current legislation to reintroduce DST in Japan.
Is JST the same as Korean Standard Time (KST)?
Yes, South Korea's Korean Standard Time (KST) operates at the same UTC+9:00 offset as JST, and South Korea also does not observe Daylight Saving Time. The two countries share an identical clock year-round, which simplifies scheduling for the significant trade, technology, and cultural exchange between Tokyo and Seoul.