Convert Mountain Daylight Time to Greenwich Mean Time - Quick & Accurate
Updates live every second
Hover over any hour to see corresponding time in both zones
To schedule a meeting between MDT and GMT:
Pro Tip: Schedule calls during the overlap window for optimal convenience for both time zones
| MDT Time | GMT Time | Context |
|---|---|---|
| 12:00 AM | 06:00 AM | Midnight MDT |
| 01:00 AM | 07:00 AM | Late Night |
| 02:00 AM | 08:00 AM | Late Night |
| 03:00 AM | 09:00 AM | Late Night |
| 04:00 AM | 10:00 AM | Late Night |
| 05:00 AM | 11:00 AM | Late Night |
| 06:00 AM | 12:00 PM | Early Morning MDT |
| 07:00 AM | 01:00 PM | Night Time |
| 08:00 AM | 02:00 PM | Night Time |
| 09:00 AM | 03:00 PM | Work Starts MDT |
| 10:00 AM | 04:00 PM | Night Time |
| 11:00 AM | 05:00 PM | Night Time |
Denver
America/Denver
London
Europe/London
GMT (Greenwich Mean Time) is 6 hours ahead of MDT (Mountain Daylight Time). This means when it's 12:00 PM in Denver (MDT), it's 6:00 PM in London (GMT).
The best time to call from MDT to GMT is during overlapping business hours. For MDT callers, schedule between 9:00 AM - 12:00 PM MDT to ensure both parties are within standard business hours.
The time difference may change during daylight saving transitions if one region observes DST while the other doesn't. Mountain Daylight Time (UTC-6) and Greenwich Mean Time (UTC+0 (GMT) / UTC+1 (BST)) may have different DST schedules.
MDT includes cities like Denver. GMT includes cities like London. Both time zones cover important business and cultural centers.
In 2025, DST in North America starts on March 9 at 2:00 AM and ends on November 2 at 2:00 AM. Other regions may have different DST schedules or not observe DST at all.