MDT to BST
+7hMDT
MDTSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
MDT and BST on the World Map
The map below highlights the MDT (Mountain Daylight Time) and BST (British Summer Time) timezone regions across the globe.
MDT – Mountain Daylight Time
UTC-06:00Mountain Daylight Time (MDT) is the daylight saving offset in the Mountain Time Zone, 6 hours behind UTC.
- •MDT shares the same offset as CST (UTC-06:00).
- •Arizona does not switch to MDT, remaining on MST.
BST – British Summer Time
UTC+01:00British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.
- •BST runs from the last Sunday in March to the last Sunday in October.
- •BST is exactly one hour ahead of GMT, the UK's standard time.
- •During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
- •The Isle of Man and the Channel Islands also observe BST.
Understanding the +7h Gap: MDT vs BST
MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts MDT 7 hours ahead of BST — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in MDT it is 4:00 PM in BST. Midnight in MDT is 7:00 AM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
MDT to BST time conversion table
| MDT (MDT) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | same day |
| 6:00 AM | 1:00 PM | same day |
| 7:00 AM | 2:00 PM | same day |
| 8:00 AM | 3:00 PM | same day |
| 9:00 AM | 4:00 PM | same day |
| 12:00 PM | 7:00 PM | same day |
| 3:00 PM | 10:00 PM | same day |
| 5:00 PM | 12:00 AM | next day |
| 6:00 PM | 1:00 AM | next day |
| 9:00 PM | 4:00 AM | next day |
Why people convert MDT to BST time
- Scheduling a call from MDT to BST: a 10:00 AM start in MDT lands at 5:00 PM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both MDT and BST are inside the 9-to-5 working day between 9:00 AM and 10:00 AM MDT time (4:00 PM–5:00 PM BST). That is roughly 1 hours of usable overlap.
- Booking travel or deliveries: tracking BST local time against MDT keeps pickup windows and arrival estimates honest across the +7h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM MDT" is unambiguous; "3 PM" across a +7h gap is not.
- Block 9:00 AM–10:00 AM MDT as the recurring meeting window if you work primarily from MDT and need BST colleagues present.
About MDT (Mountain Daylight Time)
Mountain Daylight Time (MDT) is observed during summer months in the Mountain Time Zone, except in Arizona which stays on MST year-round. MDT aligns with Central Standard Time (CST) at UTC-06:00.
About BST (British Summer Time)
British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.
Best time to call between MDT and BST
Both MDT and BST sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM MDT, which is 4:00 PM–5:00 PM BST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
MDT and BST overlap for only 60 minutes (9:00 AM–10:00 AM MDT), so meetings have to be booked precisely.
MDT is 7 hours ahead of BST (MDT UTC-06:00 → BST UTC+01:00). The shared working window is 9:00 AM–10:00 AM MDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
MDT
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
BST
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
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 MDT and BST?
MDT (MDT, UTC-06:00) is 7 hours ahead of BST (BST, UTC+01:00). The gap is currently +7h.
How do I convert MDT time to BST time?
Add +7h to MDT local time. For example, 9:00 AM in MDT is 4:00 PM in BST.
What time is it in BST right now?
BST uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from MDT.
What is the best time to call BST from MDT?
Call between 9:00 AM and 10:00 AM MDT — that maps to 4:00 PM–5:00 PM BST and keeps both parties inside the working day.
Which is ahead, MDT or BST?
MDT is 7 hours ahead of BST. When it is 12:00 PM in MDT it is 7:00 PM in BST.
Does daylight saving time affect the MDT–BST difference?
Neither zone observes daylight saving time, so the +7h offset between MDT and BST is fixed all year.
Which other cities share MDT's time zone?
MDT also covers Denver, Calgary, Edmonton, Salt Lake City, Boise.
Which countries use MDT, MDT's zone?
MDT is used in United States (Mountain), Canada (Alberta).
Is there a day difference between MDT and BST?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between MDT and BST?
BST is +7h from MDT.
What timezone is MDT in?
MDT operates on its local timezone.
What timezone is BST in?
BST operates on its local timezone.
Which countries use MDT (Mountain Daylight Time)?
MDT is used in United States (Mountain), Canada (Alberta).
Does MDT observe daylight saving time?
Yes, MDT switches to MST during summer months.
What are some interesting facts about MDT?
MDT shares the same offset as CST (UTC-06:00). Arizona does not switch to MDT, remaining on MST.
Which cities are in the BST timezone?
Major cities in the BST timezone include London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool.
What is the UTC offset for BST?
British Summer Time (BST) is at UTC+01:00. During daylight saving time, it shifts to BST.
What should I know about the BST timezone?
BST runs from the last Sunday in March to the last Sunday in October. BST is exactly one hour ahead of GMT, the UK's standard time.
When is it midnight in MDT, what time is it in BST?
When it is 12:00 AM (midnight) in MDT (MDT), it is +7h later in BST (BST).
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- new york to mdt
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- kathmandu to mdt
See every conversion from MDT →·See every conversion from BST →