Bangkok to London
-7hBangkok
ICTSOURCELondon
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.
About Bangkok
WikipediaBangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.
Thailand does not observe daylight saving time.
About London
WikipediaLondon, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
Greenwich Mean Time (GMT) is defined by the Prime Meridian at the Royal Observatory in Greenwich, London.
Bangkok to London Time Difference – Complete Guide
Bangkok, Thailand operates on the Indochina Time (UTC+07:00). London, UK uses Greenwich Mean Time (UTC+00:00).
The time difference between Bangkok and London is 420 minutes (+7h). When it's noon in Bangkok, it's 05:00 AM in London.
Why Convert Bangkok to London Time?
When planning a meeting or scheduling a call between Bangkok and London, it's crucial to account for the 7-hour time difference. Whether you're coordinating with remote teams, calling family, or setting up an international conference, knowing the exact time in London helps avoid missed connections.
Quick Tip: Use calendar apps that automatically adjust for time zones when sending invites from Bangkok to London. This ensures everyone sees the correct time for their location.
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 Bangkok and London
If you want to reach someone in London during standard business hours (9 AM – 5 PM GMT), the best time to call from Bangkok would be:
- London 9:00 AM = Bangkok 04:00 PM
- London 12:00 PM = Bangkok 07:00 PM
- London 5:00 PM = Bangkok 12:00 AM
Business Hours Overlap
Bangkok and London have a partial business hours overlap. The best window for meetings and calls is when both locations are in their working hours.
To wrap up, keeping track of the -7h gap between Bangkok and London is essential for seamless communication. Bookmark this converter to stay on top of your schedule.
🕐 Daylight Saving Time Info
Bangkok
Does not observe DST
London
❄ Currently in Standard Time
Standard: UTC+00:00 · DST: UTC+01:00
Clocks spring forward on Sun, Mar 29, 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 Bangkok and London?
London is -7h from Bangkok.
What timezone is Bangkok in?
Bangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.
What timezone is London in?
London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
What are the business hours in Bangkok?
Standard business hours in Bangkok are 8:30 AM - 5:30 PM ICT.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
What is the best time to schedule a call between Bangkok and London?
The best overlap for a call is when both cities are in business hours. Bangkok works 8:30 AM - 5:30 PM ICT and London works 9:00 AM - 5:00 PM GMT (-7h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Bangkok and London?
Bangkok uses THB (฿) while London uses GBP (£). Check current exchange rates when planning travel or business between these cities.
How do Bangkok and London compare in size?
Bangkok has a population of approximately 8.3 million (metro: 14.6 million), while London has approximately 8.8 million (metro: 14.8 million).
What are the major landmarks in Bangkok and London?
Bangkok is known for Grand Palace, Wat Arun, Wat Pho. London is famous for Big Ben, Tower Bridge, Buckingham Palace.
Do Bangkok and London have stock exchanges?
Yes. Bangkok has the SET (Stock Exchange of Thailand) and London has the LSE (London Stock Exchange). The -7h time difference affects trading hour overlaps between these exchanges.
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 Bangkok, what time is it in London?
When it is 12:00 AM (midnight) in Bangkok (ICT), it is -7h later in London (GMT).
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