What is the normal time difference between London and Denver?

London is usually 7 hours ahead of Denver. London observes GMT (UTC+0) in winter and BST (UTC+1) in summer; Denver observes MST (UTC-7) in winter and MDT (UTC-6) in summer. Both cities shift clocks in spring and autumn, keeping the gap at 7 hours for most of the year.

When is the time difference only 6 hours?

There are brief windows each year when Denver has changed clocks but the UK has not, or the UK has returned to standard time before Denver. During those windows the usual 7-hour gap shrinks to 6 hours.

When does the UK change its clocks?

The UK moves clocks forward on the last Sunday in March at 01:00 GMT (becoming BST, UTC+1) and back on the last Sunday in October at 02:00 BST (returning to GMT, UTC+0).

When does Denver (US Mountain) change its clocks?

The US shifts clocks forward on the second Sunday in March at 02:00 MST (becoming MDT, UTC-6) and back on the first Sunday in November at 02:00 MDT (returning to MST, UTC-7).

What are good meeting times for both London and Denver?

The best overlap is 15:00–18:00 London time (08:00–11:00 Denver time during the standard 7-hour offset). The meeting overlap finder on this page highlights those windows automatically.

Is this tool accurate for scheduling?

Yes. It uses the IANA timezone database embedded in your browser — the same source used by operating systems and calendar apps worldwide. Accuracy depends on your device clock being synchronized via NTP, which most devices do automatically.

Time Difference: London to Denver

See the current time in London and Denver side by side, with the exact hour offset and a business-hours overlap finder, updated live every second.

London, United Kingdom

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GMT UTC+0

Denver, United States

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MST UTC-7

Current Offset

+7 hours

London is 7 hours ahead of Denver

Convert a Specific Time

Enter a time in one city to see the equivalent in the other

London Time

Denver Time

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Based on the current offset — updates automatically when DST changes.

Meeting Overlap Finder

Business hours (09:00–18:00) highlighted — best overlap shaded

London	Denver	Status

Convert London Time to Denver Time

Based on the current offset — updates automatically

London	Denver

Summary

This tool displays the live current time in both London (Europe/London — GMT in winter, BST in summer) and Denver (America/Denver — MST in winter, MDT in summer) side by side. The exact offset is calculated automatically and adjusts whenever either city transitions for Daylight Saving Time. Use it to schedule calls between the UK and US Mountain region, coordinate remote teams, or check whether a colleague in Denver is still at work.

How it works

Your browser reads the current moment from your device clock.
It converts that moment to Europe/London time using the IANA timezone database built into modern browsers.
The same moment is converted to America/Denver time.
The UTC offsets of both cities are compared to calculate the exact hour difference.
All three values — London time, Denver time, and the offset — refresh every second.
DST transitions for both cities are handled automatically, so the offset switches correctly each spring and autumn.

Use cases

Scheduling video calls between London and Denver offices.
Checking if a colleague in Denver is still at their desk.
Planning transatlantic travel and arrival time comparisons.
Remote teams coordinating daily standups across the UK and US Mountain time zone.
Finding overlapping business hours for London-Denver meetings.
Verifying whether both cities currently observe daylight saving time.
Journalists checking broadcast times for live Denver events.
Students and teachers arranging online lessons across the Atlantic.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu