India to MST
-12h 30mIndia
ISTSOURCEMST
MSTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and MST on the World Map
The map below highlights the IST (India Standard Time) and MST (Mountain Standard Time) timezone regions across the globe.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
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.
Everything You Need to Know About India and MST Time
India runs on India Standard Time (IST) at UTC+05:30. MST runs on Mountain Standard Time (MST) at UTC-07:00. That puts India 12 hours 30 minutes behind MST — a difference of -12h 30m at the current offsets.
In practice, when it is 9:00 AM in India it is 8:30 PM in MST on the previous day. Midnight in India is 11:30 AM in MST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
India to MST time conversion table
| India (IST) | MST (MST) | Day |
|---|---|---|
| 12:00 AM | 11:30 AM | previous day |
| 6:00 AM | 5:30 PM | previous day |
| 7:00 AM | 6:30 PM | previous day |
| 8:00 AM | 7:30 PM | previous day |
| 9:00 AM | 8:30 PM | previous day |
| 12:00 PM | 11:30 PM | previous day |
| 3:00 PM | 2:30 AM | same day |
| 5:00 PM | 4:30 AM | same day |
| 6:00 PM | 5:30 AM | same day |
| 9:00 PM | 8:30 AM | same day |
Why people convert India to MST time
- Scheduling a call from India to MST: a 10:00 AM start in India lands at 9:30 PM in MST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -12h 30m gap: India 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 8:30 PM in India.
- Booking travel or deliveries: tracking MST local time against India keeps pickup windows and arrival estimates honest across the -12h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a -12h 30m gap is not.
- With a -12h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week India takes the early slot, the next week MST does.
About IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
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 India and MST
With a -12h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. MST opens at 9:00 AM MST, which is 8:30 PM in India, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
India and MST have no shared working hours because of the -12h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
India is 12 hours 30 minutes behind MST (IST UTC+05:30 → 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
India
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 India and MST?
India (IST, UTC+05:30) is 12 hours 30 minutes behind MST (MST, UTC-07:00). The gap is currently -12h 30m.
How do I convert India time to MST time?
Add -12h 30m to India local time. For example, 9:00 AM in India is 8:30 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 -12h 30m offset from India.
What is the best time to call MST from India?
There is no shared working-hours window because of the -12h 30m gap. The closest option is 1:00 PM in India, which is 12:30 AM in MST.
Which is behind, India or MST?
India is 12 hours 30 minutes behind MST. When it is 12:00 PM in India it is 11:30 PM in MST.
Do India and MST use different time zones?
India (India) uses IST at UTC+05:30, while MST uses MST at UTC-07:00. The IANA identifiers are Asia/Kolkata and America/Denver.
Does daylight saving time affect the India–MST difference?
Neither zone observes daylight saving time, so the -12h 30m offset between India and MST is fixed all year.
Which other cities share India's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, India's zone?
IST is used in India, Sri Lanka.
Is there a day difference between India and MST?
Sometimes. The -12h 30m gap is large enough that 8:00 PM or later in India already falls on the in MST.
What is the time difference between India and MST?
MST is -12h 30m from India.
What timezone is India in?
India operates on its local timezone.
What timezone is MST in?
MST operates on its local timezone.
Which countries use IST (India Standard Time)?
IST is used in India, Sri Lanka.
Does IST observe daylight saving time?
No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.
What are some interesting facts about IST?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
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 India, what time is it in MST?
When it is 12:00 AM (midnight) in India (IST), it is -12h 30m later in MST (MST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More India time conversions
- india to mumbai
- india to delhi
- india to bangalore
- india to ist
- india to new york
- india to london
- india to dubai
- india to tokyo
- india to singapore
- india to sydney
- india to los angeles
- india to paris
- india to berlin
- india to hong kong
- india to toronto
- india to kathmandu
- new york to india
- london to india
- dubai to india
- tokyo to india
- singapore to india
- sydney to india
- los angeles to india
- paris to india
- delhi to india
- mumbai to india
- berlin to india
- hong kong to india
- toronto to india
- kathmandu to india
See every conversion from India →·See every conversion from MST →