Thailand to GMT
-7hThailand
ICTSOURCEGMT
GMTGreen rows indicate typical business hours (9 AM - 5 PM)
ICT and GMT on the World Map
The map below highlights the ICT (Indochina Time) and GMT (Greenwich Mean Time) timezone regions across the globe.
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •Bangkok is one of the most visited cities in the world.
- •ICT is 12 hours ahead of EST.
- •Thailand, Vietnam, and Cambodia all share ICT.
GMT – Greenwich Mean Time
UTC+00:00Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.
- •GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
- •The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
- •GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
- •Iceland uses GMT year-round and never observes daylight saving time.
- •The UK switches from GMT to BST (British Summer Time) in late March each year.
Everything You Need to Know About Thailand and GMT Time
Thailand runs on Indochina Time (ICT) at UTC+07:00. GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. That puts Thailand 7 hours behind GMT — a difference of -7h at the current offsets.
In practice, when it is 9:00 AM in Thailand it is 2:00 AM in GMT. Midnight in Thailand is 5:00 PM in GMT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Thailand to GMT time conversion table
| Thailand (ICT) | GMT (GMT) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | previous day |
| 6:00 AM | 11:00 PM | previous day |
| 7:00 AM | 12:00 AM | same day |
| 8:00 AM | 1:00 AM | same day |
| 9:00 AM | 2:00 AM | same day |
| 12:00 PM | 5:00 AM | same day |
| 3:00 PM | 8:00 AM | same day |
| 5:00 PM | 10:00 AM | same day |
| 6:00 PM | 11:00 AM | same day |
| 9:00 PM | 2:00 PM | same day |
Why people convert Thailand to GMT time
- Scheduling a call from Thailand to GMT: a 10:00 AM start in Thailand lands at 3:00 AM in GMT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Thailand and GMT are inside the 9-to-5 working day between 4:00 PM and 5:00 PM ICT time (9:00 AM–10:00 AM GMT). That is roughly 1 hours of usable overlap.
- Booking travel or deliveries: tracking GMT local time against Thailand keeps pickup windows and arrival estimates honest across the -7h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a -7h gap is not.
- Block 4:00 PM–5:00 PM ICT as the recurring meeting window if you work primarily from Thailand and need GMT colleagues present.
About ICT (Indochina Time)
Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.
About GMT (Greenwich Mean Time)
Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.
Best time to call between Thailand and GMT
Both Thailand and GMT sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM ICT, which is 9:00 AM–10:00 AM GMT. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Thailand and GMT overlap for only 60 minutes (4:00 PM–5:00 PM ICT), so meetings have to be booked precisely.
Thailand is 7 hours behind GMT (ICT UTC+07:00 → GMT UTC+00:00). The shared working window is 4:00 PM–5:00 PM ICT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Thailand
Does not observe DST
GMT
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Thailand and GMT?
Thailand (ICT, UTC+07:00) is 7 hours behind GMT (GMT, UTC+00:00). The gap is currently -7h.
How do I convert Thailand time to GMT time?
Add -7h to Thailand local time. For example, 9:00 AM in Thailand is 2:00 AM in GMT.
What time is it in GMT right now?
GMT uses GMT at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from Thailand.
What is the best time to call GMT from Thailand?
Call between 4:00 PM and 5:00 PM ICT — that maps to 9:00 AM–10:00 AM GMT and keeps both parties inside the working day.
Which is behind, Thailand or GMT?
Thailand is 7 hours behind GMT. When it is 12:00 PM in Thailand it is 5:00 AM in GMT.
Do Thailand and GMT use different time zones?
Thailand (Thailand) uses ICT at UTC+07:00, while GMT uses GMT at UTC+00:00. The IANA identifiers are Asia/Bangkok and Europe/London.
Does daylight saving time affect the Thailand–GMT difference?
Neither zone observes daylight saving time, so the -7h offset between Thailand and GMT is fixed all year.
Which other cities share Thailand's time zone?
ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
Which countries use ICT, Thailand's zone?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Is there a day difference between Thailand and GMT?
Not normally. The -7h gap only pushes the date over the previous day.
What is the time difference between Thailand and GMT?
GMT is -7h from Thailand.
What timezone is Thailand in?
Thailand operates on its local timezone.
What timezone is GMT in?
GMT operates on its local timezone.
Which countries use ICT (Indochina Time)?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Does ICT observe daylight saving time?
No, ICT does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting facts about ICT?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
Which cities are in the GMT timezone?
Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.
What is the UTC offset for GMT?
Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.
What should I know about the GMT timezone?
GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
When is it midnight in Thailand, what time is it in GMT?
When it is 12:00 AM (midnight) in Thailand (ICT), it is -7h later in GMT (GMT).
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