GMT to ICT
+6hGMT
GMTSOURCEICT
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
GMT and ICT on the World Map
The map below highlights the GMT (Greenwich Mean Time) and ICT (Indochina Time) timezone regions across the globe.
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.
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.
Comparing Time Zones: GMT and ICT
GMT (Greenwich Mean Time) operates on the Greenwich Mean Time (UTC+00:00). ICT (Indochina Time) uses Indochina Time (UTC+07:00).
The time difference between GMT and ICT is 360 minutes (+6h). When it's noon in GMT, it's 06:00 PM in ICT.
Why Convert GMT to ICT Time?
Whether you're traveling from GMT to ICT or simply need to coordinate across time zones, understanding the 6-hour difference is key. Use this converter to quickly determine the current time in ICT and ensure your schedule aligns perfectly.
Best Practice: When proposing meeting times to someone in ICT, offer a few options in their local time to show consideration for the 6-hour difference.
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.
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.
Best Time to Call Between GMT and ICT
If you want to reach someone in ICT during standard business hours (9 AM – 5 PM ICT), the best time to call from GMT would be:
- ICT 9:00 AM = GMT 03:00 AM
- ICT 12:00 PM = GMT 06:00 AM
- ICT 5:00 PM = GMT 11:00 AM
Business Hours Overlap
GMT and ICT have a partial business hours overlap. The best window for meetings and calls is when both locations are in their working hours.
Ultimately, understanding the +6h difference between GMT and ICT empowers you to coordinate better. Whether for business or personal reasons, this tool ensures you're always on time.
🕐 Daylight Saving Time Info
GMT
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
ICT
Does not observe DST
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 GMT and ICT?
ICT is +6h from GMT.
What timezone is GMT in?
GMT operates on its local timezone.
What timezone is ICT in?
ICT operates on its local timezone.
Which countries use GMT (Greenwich Mean Time)?
GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.
Does GMT observe daylight saving time?
Yes, GMT switches to BST during summer months.
What are some interesting facts about GMT?
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.
Which cities are in the ICT timezone?
Major cities in the ICT timezone include Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
What is the UTC offset for ICT?
Indochina Time (ICT) is at UTC+07:00.
What should I know about the ICT timezone?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
When is it midnight in GMT, what time is it in ICT?
When it is 12:00 AM (midnight) in GMT (GMT), it is +6h later in ICT (ICT).
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