Hong Kong to London
-8hHong Kong
HKTSOURCELondon
GMTGreen rows indicate typical business hours (9 AM - 5 PM)
HKT and GMT on the World Map
The map below highlights the HKT (HKT) and GMT (Greenwich Mean 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.
About Hong Kong
WikipediaHong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
The city has one of the world's most efficient and affordable public transit systems.
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.
London was the first city to have an underground railway, opening in 1863.
Everything You Need to Know About Hong Kong and London Time
Hong Kong, Hong Kong operates on the Asia/Hong_Kong (UTC+08:00). London, UK uses Greenwich Mean Time (UTC+00:00).
The time difference between Hong Kong and London is 480 minutes (+8h). When it's noon in Hong Kong, it's 04:00 AM in London.
Why Convert Hong Kong to London Time?
Whether you're traveling from Hong Kong to London or simply need to coordinate across time zones, understanding the 8-hour difference is key. Use this converter to quickly determine the current time in London and ensure your schedule aligns perfectly.
Quick Tip: Use calendar apps that automatically adjust for time zones when sending invites from Hong Kong to London. This ensures everyone sees the correct time for their location.
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 Hong Kong 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 Hong Kong would be:
- London 9:00 AM = Hong Kong 05:00 PM
- London 12:00 PM = Hong Kong 08:00 PM
- London 5:00 PM = Hong Kong 01:00 AM
Business Hours Overlap
Hong Kong and London 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 -8h difference between Hong Kong and London empowers you to coordinate better. Whether for business or personal reasons, this tool ensures you're always on time.
🕐 Daylight Saving Time Info
Hong Kong
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 Hong Kong and London?
London is -8h from Hong Kong.
What timezone is Hong Kong in?
Hong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
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 Hong Kong?
Standard business hours in Hong Kong are 9:00 AM - 6:00 PM HKT.
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 Hong Kong and London?
The best overlap for a call is when both cities are in business hours. Hong Kong works 9:00 AM - 6:00 PM HKT and London works 9:00 AM - 5:00 PM GMT (-8h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Hong Kong and London?
Hong Kong uses HKD (HK$) while London uses GBP (£). Check current exchange rates when planning travel or business between these cities.
How do Hong Kong and London compare in size?
Hong Kong has a population of approximately 7.5 million (metro: 7.5 million), while London has approximately 8.8 million (metro: 14.8 million).
What are the major landmarks in Hong Kong and London?
Hong Kong is known for Victoria Peak, Tian Tan Buddha, Victoria Harbour. London is famous for Big Ben, Tower Bridge, Buckingham Palace.
Do Hong Kong and London have stock exchanges?
Yes. Hong Kong has the HKEX (Hong Kong Stock Exchange) and London has the LSE (London Stock Exchange). The -8h time difference affects trading hour overlaps between these exchanges.
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.
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