MST to IST Time Converter
Type a time in MST to see it in IST, with daylight saving handled for the date you pick. Every hour of the day is in the table below, and the meeting planner shows when both working days overlap.
In India
9:30 pmIST
9:00 am MST on Wed 14 Jan 2026 is 9:30 pm IST the same day. India is 12 h 30 min ahead of Denver.
- Date there
- Wednesday 14 January 2026
- Offsets
- MST UTC−7 · IST UTC+5:30
- Date used
- Example day: Wednesday 14 January 2026
How this works: Method, 3 sources,
How this works
Method
Here MST means Mountain Time, MST (UTC−7) in its winter and MDT (UTC−6) in its summer, as kept in Denver; IST means India Standard Time, UTC+5:30 all year. So IST is 12 h 30 min ahead of MST and 11 h 30 min ahead of MDT. Two 9-to-5 working days do not overlap at all, so one side has to start early or stay late. Full method
Sources
Changes
- 15 more conversion pages (IST to CST, BST to IST, SGT, GST, JST, MST and more); each conversion page shows all 24 hours with working hours shaded, and its best meeting times.
- The pickers find about a thousand more cities, states and countries (Seattle, Bangalore, Texas), and each conversion page names the next clock change on either side.
- The converter opens on the time now, live, with a Now choice beside the time, and the main converter starts from your own time zone.
- First published, with a world clock, pages for the time in 31 places and 15 common conversions such as PST to IST.
How to convert MST to IST
Here MST means Mountain Time, MST (UTC−7) in its winter and MDT (UTC−6) in its summer, as kept in Denver; IST means India Standard Time, UTC+5:30 all year. So IST is 12 h 30 min ahead of MST and 11 h 30 min ahead of MDT. Two 9-to-5 working days do not overlap at all, so one side has to start early or stay late.
Mountain Time covers Denver, Salt Lake City, Albuquerque, Boise and the whole of Arizona, and MST to IST is how people there reach colleagues and family in India. The gap is wide, 12 h 30 min in winter, so a Mountain morning lands in the Indian evening and a Mountain evening reaches the next Indian morning. The calls that work best start between 7:00 and 8:30 am in Denver.
The catch is that Mountain Time is two clocks. Colorado, Utah and New Mexico move to MDT (UTC−6) for summer, when India is 11 h 30 min ahead. Arizona does not: Phoenix and Tucson stay on MST (UTC−7) all year, so from Arizona the gap to India is always 12 h 30 min. This page follows Denver; if you are in Phoenix, read the January column of the table all year round. The Navajo Nation, in northeastern Arizona, does change its clocks, like Denver.
Rule of thumb: Add 12½ hours to MST or 11½ to MDT and move to the next day past midnight: 8:00 am in Denver is 8:30 pm (winter) or 7:30 pm (summer) in India.
IST = MST +12:30 · IST = MDT +11:30
- Daylight saving time is not observed in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands or the state of Arizona, except the Navajo Indian Reservation, which does observe it. Source: NIST, Daylight Saving Time (DST).
Meeting planner: best times for MST and IST
The MST and IST working days never overlap, so every meeting asks one side to start early or stay late. The shaded runs are the hours when both clocks are between 7 am and 9 pm; pick the end that suits whoever has the more flexible day, and swap it now and then.
January: MST and IST
- No hour is inside 9 to 5 on both clocks.
- Early or late for one side: 7:00 am to 8:30 am MST is 7:30 pm to 9:00 pm IST (1 h 30 min); 6:30 pm to 9:00 pm MST is 7:00 am to 9:30 am IST the next day (2 h 30 min).
July: MDT and IST
- No hour is inside 9 to 5 on both clocks.
- Early or late for one side: 7:00 am to 9:30 am MDT is 6:30 pm to 9:00 pm IST (2 h 30 min); 7:30 pm to 9:00 pm MDT is 7:00 am to 8:30 am IST the next day (1 h 30 min).
Both between 9 am and 5 pmBoth between 7 am and 9 pm
MST to IST time conversion table
Every hour of the MST day and the time in IST: the January column holds while the clocks are on MST and IST, the July column while they are on MDT and IST. The dates they switch are under the table.
| MST / MDT time | IST in January | IST in July |
|---|---|---|
| 12:00 am | 12:30 pm | 11:30 am |
| 1:00 am | 1:30 pm | 12:30 pm |
| 2:00 am | 2:30 pm | 1:30 pm |
| 3:00 am | 3:30 pm | 2:30 pm |
| 4:00 am | 4:30 pm | 3:30 pm |
| 5:00 am | 5:30 pm | 4:30 pm |
| 6:00 am | 6:30 pm | 5:30 pm |
| 7:00 am | 7:30 pm | 6:30 pm |
| 8:00 am | 8:30 pm | 7:30 pm |
| 9:00 am | 9:30 pm | 8:30 pm |
| 10:00 am | 10:30 pm | 9:30 pm |
| 11:00 am | 11:30 pm | 10:30 pm |
| 12:00 pm | 12:30 am (next day) | 11:30 pm |
| 1:00 pm | 1:30 am (next day) | 12:30 am (next day) |
| 2:00 pm | 2:30 am (next day) | 1:30 am (next day) |
| 3:00 pm | 3:30 am (next day) | 2:30 am (next day) |
| 4:00 pm | 4:30 am (next day) | 3:30 am (next day) |
| 5:00 pm | 5:30 am (next day) | 4:30 am (next day) |
| 6:00 pm | 6:30 am (next day) | 5:30 am (next day) |
| 7:00 pm | 7:30 am (next day) | 6:30 am (next day) |
| 8:00 pm | 8:30 am (next day) | 7:30 am (next day) |
| 9:00 pm | 9:30 am (next day) | 8:30 am (next day) |
| 10:00 pm | 10:30 am (next day) | 9:30 am (next day) |
| 11:00 pm | 11:30 am (next day) | 10:30 am (next day) |
Shaded: 9 am to 5 pm on that clock. Where a row is shaded on both sides, both are at work.
When the MST–IST difference changes next
| Date | What happens | Then |
|---|---|---|
| Sun 1 Nov 2026 | Denver falls back (MST) | IST is 12 h 30 min ahead of MST |
| Sun 14 Mar 2027 | Denver springs forward (MDT) | IST is 11 h 30 min ahead of MDT |
Frequently Asked Questions
What is 9 am MST in IST?
In January, 9:00 am MST is 9:30 pm IST. In July, 9:00 am MDT is 8:30 pm IST.
What time is 7 am MST in IST?
7:00 am MST is 7:30 pm IST the same day. In summer, 7:00 am MDT in Denver is 6:30 pm IST. In Arizona, which stays on MST, 7:00 am is 7:30 pm in India all year.
Is Arizona on Mountain or Pacific time?
Arizona keeps Mountain Standard Time all year. In winter it shows the same time as Denver; in summer, when Denver moves to MDT, Arizona shows the same time as Los Angeles on PDT.