ICT to AEST Converter & Meeting Planner
Quick answer: 9:00 AM ICT = 12:00 PM AEST (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 Australian Eastern Standard Time (AEST)? You need to account for the standard time difference. Australian Eastern Standard Time is normally 3 hours ahead of Indochina Time. Whether you are coordinating between teams in Bangkok and Ho Chi Minh City and Sydney and Melbourne, 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 = 3:00 AM AEST. The full 24-hour ICT to AEST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM ICT = 6:00 PM AEST.
| ICT Time | AEST Time |
|---|---|
| 12:00 AM (00:00) | 3:00 AM (03:00) |
| 1:00 AM (01:00) | 4:00 AM (04:00) |
| 2:00 AM (02:00) | 5:00 AM (05:00) |
| 3:00 AM (03:00) | 6:00 AM (06:00) |
| 4:00 AM (04:00) | 7:00 AM (07:00) |
| 5:00 AM (05:00) | 8:00 AM (08:00) |
| 6:00 AM (06:00) | 9:00 AM (09:00) |
| 7:00 AM (07:00) | 10:00 AM (10:00) |
| 8:00 AM (08:00) | 11:00 AM (11:00) |
| 9:00 AM (09:00) | 12:00 PM (12:00) |
| 10:00 AM (10:00) | 1:00 PM (13:00) |
| 11:00 AM (11:00) | 2:00 PM (14:00) |
| 12:00 PM (12:00) | 3:00 PM (15:00) |
| 1:00 PM (13:00) | 4:00 PM (16:00) |
| 2:00 PM (14:00) | 5:00 PM (17:00) |
| 3:00 PM (15:00) | 6:00 PM (18:00) |
| 4:00 PM (16:00) | 7:00 PM (19:00) |
| 5:00 PM (17:00) | 8:00 PM (20:00) |
| 6:00 PM (18:00) | 9:00 PM (21:00) |
| 7:00 PM (19:00) | 10:00 PM (22:00) |
| 8:00 PM (20:00) | 11:00 PM (23:00) |
| 9:00 PM (21:00) | 12:00 AM (00:00)+1 day |
| 10:00 PM (22:00) | 1:00 AM (01:00)+1 day |
| 11:00 PM (23:00) | 2:00 AM (02:00)+1 day |
Best time to call Sydney from Bangkok
For most work calls, compare the normal business day in Bangkok (ICT) with the business day in Sydney (AEST). ICT commonly covers Southeast Asia, Indochina Peninsula, while AEST is mainly associated with Oceania, Australia.
⚠️ 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 - 2:00 PM ICT, which corresponds to 12:00 PM - 5:00 PM AEST. This window sits inside the typical ICT workday (9:00 AM - 5:00 PM) and the AEST workday (9:00 AM - 5:00 PM).
- DST Safety: ICT or AEST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Stock Exchange of Thailand (SET): 10:00-16:30 local time in Bangkok.
- Australian Securities Exchange (ASX): 10:00-16:00 local time in Sydney.
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Frequently Asked Questions
What is the time difference between ICT and AEST?
During standard time, Australian Eastern Standard Time is 3 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 all of eastern Australia observe Daylight Saving Time?
No — eastern Australia is split on DST. New South Wales (Sydney), Victoria (Melbourne), Tasmania (Hobart), and the ACT (Canberra) advance their clocks to AEDT (UTC+11) each October, while Queensland (Brisbane) opts out entirely and remains on AEST (UTC+10) year-round. This means Sydney and Brisbane run on the same clock for only part of the year.
What is the difference between AEST and AEDT?
AEST (Australian Eastern Standard Time) is the UTC+10:00 offset observed during the Southern Hemisphere winter months, roughly April through October. AEDT (Australian Eastern Daylight Time) is the UTC+11:00 offset applied during the Southern Hemisphere summer when clocks spring forward in October, observed by New South Wales, Victoria, Tasmania, and the ACT.