Denver to London
+6hDenver
MSTSOURCELondon
GMTGreen rows indicate typical business hours (9 AM - 5 PM)
MST and GMT on the World Map
The map below highlights the MST (Mountain Standard Time) and GMT (Greenwich Mean Time) timezone regions across the globe.
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
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 Denver
WikipediaDenver operates on Mountain Time (MST/MDT), 2 hours behind New York. As a tech and aerospace hub, Denver bridges West Coast and Central US business hours.
Denver is exactly one mile above sea level, earning its 'Mile High City' nickname.
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.
Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.
Denver to London Time Difference – Complete Guide
Denver, USA operates on the Mountain Standard Time (UTC-07:00). London, UK uses Greenwich Mean Time (UTC+00:00).
The time difference between Denver and London is 360 minutes (+6h). When it's noon in Denver, it's 06:00 PM in London.
Why Convert Denver to London Time?
When planning a meeting or scheduling a call between Denver and London, it's crucial to account for the 6-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 Denver to London. This ensures everyone sees the correct time for their location.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
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 Denver 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 Denver would be:
- London 9:00 AM = Denver 03:00 AM
- London 12:00 PM = Denver 06:00 AM
- London 5:00 PM = Denver 11:00 AM
Business Hours Overlap
Denver and London have a partial business hours overlap. The best window for meetings and calls is when both locations are in their working hours.
In summary, the +6h time difference between Denver and London means you need to plan carefully. Use this page as your go-to reference for quick and accurate time conversions.
🕐 Daylight Saving Time Info
Denver
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
London
❄ Currently in Standard Time
Standard: UTC+00:00 · DST: UTC+01:00
Clocks spring forward on Sun, Mar 29, 2026
⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.
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 Denver and London?
London is +6h from Denver.
What timezone is Denver in?
Denver operates on Mountain Time (MST/MDT), 2 hours behind New York. As a tech and aerospace hub, Denver bridges West Coast and Central US 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 Denver?
Standard business hours in Denver are 8:00 AM - 5:00 PM MST.
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 Denver and London?
The best overlap for a call is when both cities are in business hours. Denver works 8:00 AM - 5:00 PM MST and London works 9:00 AM - 5:00 PM GMT (+6h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Denver and London?
Denver uses USD ($) while London uses GBP (£). Check current exchange rates when planning travel or business between these cities.
How do Denver and London compare in size?
Denver has a population of approximately 715,000 (metro: 2.9 million), while London has approximately 8.8 million (metro: 14.8 million).
What are the major landmarks in Denver and London?
Denver is known for Red Rocks Amphitheatre, Denver Art Museum, Union Station. London is famous for Big Ben, Tower Bridge, Buckingham Palace.
Do Denver and London have stock exchanges?
Yes. Denver has the N/A (Uses NYSE/NASDAQ) and London has the LSE (London Stock Exchange). The +6h time difference affects trading hour overlaps between these exchanges.
Which countries use MST (Mountain Standard Time)?
MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).
Does MST observe daylight saving time?
Yes, MST switches to MDT during summer months.
What are some interesting facts about MST?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
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 Denver, what time is it in London?
When it is 12:00 AM (midnight) in Denver (MST), it is +6h later in London (GMT).
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