BST to MST Time — Convert British Summer Time to Mountain Standard Time (US)

MST is currently 7 hours behind BST.

On Clockjumper, BST refers to British Summer Time (UTC+1), the UK's daylight-saving offset. The same letters are also used locally for Bangladesh Standard Time (UTC+6) — check the city or UTC offset to be sure which is meant.

MST is Mountain Standard Time (UTC−7). Most of the US Mountain zone switches to MDT (UTC−6) in summer, but Arizona (except the Navajo Nation) stays on MST year-round.

MST is 7 hours behind BST for most of the year. British Summer Time and Mountain Standard Time (US) both observe daylight saving, but they change their clocks on different dates, so for a short period each spring and each autumn the gap differs by an hour — the converter above always reflects the correct offset for the date you pick.

Is MST ahead of or behind BST right now?

MST is currently 7 hours behind BST.

What is the current BST to MST time difference?

Right now the gap is 7 hours — MST is 7 hours behind BST.

Does the BST → MST offset change during the year?

Yes, briefly. For most of the year MST is 7 hours behind BST, but British Summer Time and Mountain Standard Time (US) change their clocks on different dates, so for a short period each spring and each autumn the gap differs by an hour. The converter above always reflects the correct offset for the date you pick.

Does BST observe daylight saving time?

BST is itself the daylight-saving form. British Summer Time is in force at UTC+1 through the summer months; outside that window the same zone is on GMT (UTC+0).

Does MST observe daylight saving time?

MST is itself the standard-time form. Mountain Standard Time (US) is in force at UTC-7 through the winter months; outside that window the same zone is on MDT (UTC-6).

What time is 3 AM BST in MST?

3:00 AM BST is 8:00 PM (previous day) MST.

What time is 8 AM BST in MST?

8:00 AM BST is 1:00 AM MST.

What time is 9 AM BST in MST?

9:00 AM BST is 2:00 AM MST.

What time is 10 AM BST in MST?

10:00 AM BST is 3:00 AM MST.

What time is 11 AM BST in MST?

11:00 AM BST is 4:00 AM MST.

What time is 12 PM (noon) BST in MST?

12:00 PM BST is 5:00 AM MST.

What time is 2 PM BST in MST?

2:00 PM BST is 7:00 AM MST.

What time is 3 PM BST in MST?

3:00 PM BST is 8:00 AM MST.

What time is 4 PM BST in MST?

4:00 PM BST is 9:00 AM MST.

What time is 5 PM BST in MST?

5:00 PM BST is 10:00 AM MST.

What time is 9 PM BST in MST?

9:00 PM BST is 2:00 PM MST.

What time is 10 PM BST in MST?

10:00 PM BST is 3:00 PM MST.

When is the best time to schedule a call between BST and MST?

The working-hours overlap (09:00–17:00 in both zones) runs roughly 4:00 PM – 5:00 PM BST (≈ 1 hour). The midpoint of that window — 4:30 PM BST, 9:30 AM MST — is the safest single slot to propose for a live call.

What time zone does BST refer to?

BST refers to British Summer Time (IANA: Europe/London).

What time zone does MST refer to?

MST refers to Mountain Standard Time (US) (IANA: America/Denver).

Is BST on this page the same as other zones that share the letters "BST"?

On Clockjumper, BST refers to British Summer Time (UTC+1), the UK's daylight-saving offset. The same letters are also used locally for Bangladesh Standard Time (UTC+6) — check the city or UTC offset to be sure which is meant.

Is MST on this page the same as other zones that share the letters "MST"?

MST is Mountain Standard Time (UTC−7). Most of the US Mountain zone switches to MDT (UTC−6) in summer, but Arizona (except the Navajo Nation) stays on MST year-round.

• MST to BST
• BST to CDT
• AEST to MST
• BST to CET
• CDT to MST
• BST to CST
• CET to MST
• BST to EDT
• CST to MST
• BST to EST
• EDT to MST
• BST to GMT
• EST to MST
• BST to HKT
• GMT to MST

• About BST (British Summer Time) →
• About MST (Mountain Standard Time (US)) →
• All timezone conversion pages →
• Research: how daylight saving shifts workday overlap →