Time Difference Between Mountain Time and United Kingdom
As of 31 August 2026, United Kingdom is 7 hours ahead of Mountain Time. That number is not constant. Over the course of a year, because of daylight saving changes, London, United Kingdom ranges from 6 hours ahead to 7 hours ahead relative to Mountain Time, United States. The calculator below is always up to date.
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Mountain Time, United States
16:34
Mon, Aug 31, 2026
UTC-6 · MDT · America/Denver
London, United Kingdom
+7h23:34
Mon, Aug 31, 2026
UTC+1 · Europe/London
United Kingdom is 7 hours ahead of Mountain Time.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Mountain Time | Monday, August 31, 2026 | MDTAmerica/Denver | UTC-6 | Active now |
| United Kingdom | Monday, August 31, 2026 | Europe/London | UTC+1 | Active now |
Mountain Time: Covers Denver and most of the Rocky Mountain states. Switches between MST (UTC-7) and MDT (UTC-6) with daylight saving — unlike Arizona, which stays on MST year-round.
Hour by hour: Mountain Time to United Kingdom
Every hour of today in Mountain Time and what it is in United Kingdom. Highlighted rows fall inside United Kingdom working hours (09:00–18:00).
| Mountain Time | United Kingdom |
|---|---|
| 00:00 | 07:00 |
| 01:00 | 08:00 |
| 02:00 | 09:00 |
| 03:00 | 10:00 |
| 04:00 | 11:00 |
| 05:00 | 12:00 |
| 06:00 | 13:00 |
| 07:00 | 14:00 |
| 08:00 | 15:00 |
| 09:00 | 16:00 |
| 10:00 | 17:00 |
| 11:00 | 18:00 |
| Mountain Time | United Kingdom |
|---|---|
| 12:00 | 19:00 |
| 13:00 | 20:00 |
| 14:00 | 21:00 |
| 15:00 | 22:00 |
| 16:00 | 23:00 |
| 17:00 | 00:00next day |
| 18:00 | 01:00next day |
| 19:00 | 02:00next day |
| 20:00 | 03:00next day |
| 21:00 | 04:00next day |
| 22:00 | 05:00next day |
| 23:00 | 06:00next day |
Best time to call or meet
Overlapping working hours
09:00–11:00 in Mountain Time (16:00–18:00 in United Kingdom)
Both places are inside 09:00–18:00 for 2 hours a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
08:00–14:00 in Mountain Time (15:00–21:00 in United Kingdom)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
United Kingdom puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, United Kingdom is 6 hours ahead of Mountain Time — instead of 7 hours ahead, as it is today.
Mountain Time puts its clocks back on Sunday, November 1, 2026
The local offset moves from UTC-6 to UTC-7. The gap between Mountain Time and United Kingdom stays at 7 hours because both places change at the same time.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Mountain Time and United Kingdom: common questions
What is the time difference between Mountain Time and United Kingdom?
As of 31 August 2026, United Kingdom is 7 hours ahead of Mountain Time. The gap is not fixed: across the year, United Kingdom ranges from 6 hours ahead to 7 hours ahead relative to Mountain Time, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Mountain Time, what time is it in United Kingdom?
It is 04:00 PM in London, United Kingdom. Use the time field in the calculator above to check any other hour.
Is United Kingdom ahead of or behind Mountain Time?
United Kingdom is ahead of Mountain Time by 7 hours at the moment. In practical terms, the working day in United Kingdom starts and ends earlier in Mountain Time terms.
Do Mountain Time and United Kingdom observe daylight saving time?
Both Mountain Time and United Kingdom change their clocks, but not on the same dates. That is why the gap is not fixed: across the year, United Kingdom ranges from 6 hours ahead to 7 hours ahead relative to Mountain Time.
What is the best time to call United Kingdom from Mountain Time?
Working hours overlap between 09:00 and 11:00 Mountain Time time, which is 16:00 to 18:00 in United Kingdom. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Mountain Time, United States (UTC-6) and London, United Kingdom (UTC+1) were generated on Monday, August 31, 2026 UTC and refresh in your browser.