BDST to MST
-13hBDST
BDSTSOURCEMST
MSTGreen rows indicate typical business hours (9 AM - 5 PM)
BDST and MST on the World Map
The map below highlights the BDST (Bangladesh Standard Time) and MST (Mountain Standard Time) timezone regions across the globe.
BDST – Bangladesh Standard Time
UTC+06:00Bangladesh Standard Time (BDST, UTC+06:00) is the time zone for Bangladesh, 6 hours ahead of UTC.
- •Bangladesh uses a single time zone, UTC+06:00, across the entire country.
- •Bangladesh does not observe daylight saving time, so the offset is fixed all year.
- •Dhaka is one of the most densely populated cities globally.
- •BDST is written here to distinguish it from British Summer Time (BST).
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
Comparing Time Zones: BDST and MST
BDST runs on Bangladesh Standard Time (BDST) at UTC+06:00. MST runs on Mountain Standard Time (MST) at UTC-07:00. That puts BDST 13 hours behind MST — a difference of -13h at the current offsets.
In practice, when it is 9:00 AM in BDST it is 8:00 PM in MST on the previous day. Midnight in BDST is 11:00 AM in MST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
BDST to MST time conversion table
| BDST (BDST) | MST (MST) | Day |
|---|---|---|
| 12:00 AM | 11:00 AM | previous day |
| 6:00 AM | 5:00 PM | previous day |
| 7:00 AM | 6:00 PM | previous day |
| 8:00 AM | 7:00 PM | previous day |
| 9:00 AM | 8:00 PM | previous day |
| 12:00 PM | 11:00 PM | previous day |
| 3:00 PM | 2:00 AM | same day |
| 5:00 PM | 4:00 AM | same day |
| 6:00 PM | 5:00 AM | same day |
| 9:00 PM | 8:00 AM | same day |
Why people convert BDST to MST time
- Scheduling a call from BDST to MST: a 10:00 AM start in BDST lands at 9:00 PM in MST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -13h gap: BDST and MST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in MST is 8:00 PM in BDST.
- Coordinating a BDST-based team with MST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM BDST" is unambiguous; "3 PM" across a -13h gap is not.
- With a -13h gap there is no shared 9-to-5 window, so alternate the early start: one week BDST takes the early slot, the next week MST does.
About BDST (Bangladesh Standard Time)
Bangladesh Standard Time (BDST) is the single time zone used across Bangladesh, fixed at UTC+06:00 all year. Bangladesh has not observed daylight saving time since a short-lived experiment in 2009, so the gap between Bangladesh and every other zone is constant. Dhaka, the capital, is one of the most densely populated cities in the world. Because the country sits close to the middle of the UTC+06:00 band, solar noon is near 12:00 for most of the year. BDST is listed separately from British Summer Time, which shares the BST abbreviation but is UTC+01:00.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
Best time to call between BDST and MST
With a -13h offset there is no overlap inside a normal 9 AM – 5 PM day. MST opens at 9:00 AM MST, which is 8:00 PM in BDST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
BDST and MST have no shared working hours because of the -13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
BDST is 13 hours behind MST (BDST UTC+06:00 → MST UTC-07:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
BDST
Does not observe DST
MST
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 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 BDST and MST?
BDST (BDST, UTC+06:00) is 13 hours behind MST (MST, UTC-07:00). The gap is currently -13h.
How do I convert BDST time to MST time?
Add -13h to BDST local time. For example, 9:00 AM in BDST is 8:00 PM in MST (previous day).
What time is it in MST right now?
MST uses MST at UTC-07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -13h offset from BDST.
What is the best time to call MST from BDST?
There is no shared working-hours window because of the -13h gap. The closest option is 1:00 PM in BDST, which is 12:00 AM in MST.
Which is behind, BDST or MST?
BDST is 13 hours behind MST. When it is 12:00 PM in BDST it is 11:00 PM in MST.
Does daylight saving time affect the BDST–MST difference?
Neither zone observes daylight saving time, so the -13h offset between BDST and MST is fixed all year.
Which other cities share BDST's time zone?
BDST also covers Dhaka, Chittagong, Khulna, Rajshahi, Sylhet.
Which countries use BDST, BDST's zone?
BDST is used in Bangladesh.
Is there a day difference between BDST and MST?
Sometimes. The -13h gap is large enough that 8:00 PM or later in BDST already falls on the in MST.
What is the time difference between BDST and MST?
MST is -13h from BDST.
What timezone is BDST in?
BDST operates on its local timezone.
What timezone is MST in?
MST operates on its local timezone.
Which countries use BDST (Bangladesh Standard Time)?
BDST is used in Bangladesh.
Does BDST observe daylight saving time?
No, BDST does not observe daylight saving time and remains at UTC+06:00 year-round.
What are some interesting facts about BDST?
Bangladesh uses a single time zone, UTC+06:00, across the entire country. Bangladesh does not observe daylight saving time, so the offset is fixed all year.
Which cities are in the MST timezone?
Major cities in the MST timezone include Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson.
What is the UTC offset for MST?
Mountain Standard Time (MST) is at UTC-07:00. During daylight saving time, it shifts to MDT.
What should I know about the MST timezone?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
When is it midnight in BDST, what time is it in MST?
When it is 12:00 AM (midnight) in BDST (BDST), it is -13h later in MST (MST).
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More BDST time conversions
- bdst to dhaka
- bdst to bangladesh
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- bdst to london
- bdst to dubai
- bdst to tokyo
- bdst to singapore
- bdst to sydney
- bdst to los angeles
- bdst to paris
- bdst to delhi
- bdst to mumbai
- bdst to berlin
- bdst to hong kong
- bdst to toronto
- bdst to kathmandu
- new york to bdst
- london to bdst
- dubai to bdst
- tokyo to bdst
- singapore to bdst
- sydney to bdst
- los angeles to bdst
- paris to bdst
- delhi to bdst
- mumbai to bdst
- berlin to bdst
- hong kong to bdst
- toronto to bdst
- kathmandu to bdst
See every conversion from BDST →·See every conversion from MST →