Mountain Daylight Time (mdt) is used in USA. The IANA timezone identifier is America/Denver.

Greenwich Mean Time (gmt) is used in United Kingdom. The IANA timezone identifier is Europe/London.

MDT to GMT Time Converter

Mountain Daylight Time → Greenwich Mean Time

MDT = UTC-6GMT = UTC+1

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

GMT (London)

United Kingdom · +7h🔔 Public Holiday in 3d — World Cup Bank Holiday

16:00

New York

USA · +2h

11:00

Tokyo

Japan · +15h

00:00+1 day

Dubai

United Arab Emirates · +10h

19:00

Sydney

Australia · +16h

01:00+1 day

Time difference: MDT (Denver) and GMT (London)

MDT (Denver) is 7 hours behind GMT (London). When it's noon in MDT (Denver), it's 19:00 in GMT (London).

MDT (Denver) runs on America/Denver; GMT (London) runs on Europe/London. Together they are 7 hours apart.

Business hours comparison

Both MDT (Denver) and GMT (London) are simultaneously in business hours for 1 hour per day (assuming standard 9:00–17:00 working hours).

00:0006:0012:0018:0024:00

MDT (Denver)

GMT (London)

Overlap (1h)

Best call times between these locations

There is a 1-hour daily window where both locations are in business hours.

09:00 Denver / 16:00 London✓ Both working

Working hours defined as 09:00–17:00 local time for each location.

Public holidays this year

⚡ Upcoming holidays in both locations, confirm with your contact before booking.

MDT (Denver)8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

GMT (London)7 holidays

Jun 15World Cup Bank HolidaySOON

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

MDT (Denver) and GMT (London) — practical scheduling

MDT (Denver) (USA) and GMT (London) (United Kingdom) are 7 hours apart. With a 1-hour daily overlap in standard business hours, both teams can connect in real time without either side stretching beyond their normal workday.

💡 Practical scheduling guidelines

✅

If you are in MDT (Denver), aim for 09:00–10:00, which corresponds to 16:00–17:00 in GMT (London) — both teams are within working hours.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am MDT (Denver)".

MDT (Denver) ↔ GMT (London)

1h of business hours overlap daily (09:00–17:00)

MDT (Denver)

GMT (London)

00:00

07:00

01:00

08:00