MST to IST
On Oct 23, 2026, India Standard Time is 11 hours 30 minutes ahead of Mountain Time: 9:00 AM MDT is 8:30 PM IST. The gap changes during the year because of daylight saving time; the dates are below.
IST vs MST over the next 12 months
| Period | IST is | Example |
|---|---|---|
| Oct 23, 2026 to Nov 1, 2026 | 11 hours 30 minutes ahead | 9:00 AM MDT = 8:30 PM IST |
| Nov 1, 2026 to Mar 14, 2027 | 12 hours 30 minutes ahead | 9:00 AM MST = 9:30 PM IST |
| Mar 14, 2027 onwards | 11 hours 30 minutes ahead | 9:00 AM MDT = 8:30 PM IST |
MST to IST conversion table
Every hour of a weekday around Oct 23, 2026, in both zones.
| Mountain Time | India Standard Time |
|---|---|
| 12:00 AM | 11:30 AM |
| 1:00 AM | 12:30 PM |
| 2:00 AM | 1:30 PM |
| 3:00 AM | 2:30 PM |
| 4:00 AM | 3:30 PM |
| 5:00 AM | 4:30 PM |
| 6:00 AM | 5:30 PM |
| 7:00 AM | 6:30 PM |
| 8:00 AM | 7:30 PM |
| 9:00 AM | 8:30 PM |
| 10:00 AM | 9:30 PM |
| 11:00 AM | 10:30 PM |
| 12:00 PM | 11:30 PM |
| 1:00 PM | 12:30 AM (next day) |
| 2:00 PM | 1:30 AM (next day) |
| 3:00 PM | 2:30 AM (next day) |
| 4:00 PM | 3:30 AM (next day) |
| 5:00 PM | 4:30 AM (next day) |
| 6:00 PM | 5:30 AM (next day) |
| 7:00 PM | 6:30 AM (next day) |
| 8:00 PM | 7:30 AM (next day) |
| 9:00 PM | 8:30 AM (next day) |
| 10:00 PM | 9:30 AM (next day) |
| 11:00 PM | 10:30 AM (next day) |
Best time for a meeting
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 30 minutes on a weekday: 8:00 AM–8:30 AM MDT, which is 7:30 PM–8:00 PM IST.
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Daylight saving time
Mountain Time (MST/MDT)
- Nov 1, 2026: clocks go back 1 hour at 2:00 AM (UTC−6 → UTC−7)
- Mar 14, 2027: clocks go forward 1 hour at 2:00 AM (UTC−7 → UTC−6)
Where these clocks are used
- Mountain Time (MST/MDT): Denver, Salt Lake City, Calgary. IANA zone
America/Denver. - India Standard Time (IST): all of India: Mumbai, Delhi, Bengaluru, Chennai. IANA zone
Asia/Kolkata.
Questions
What time is it in IST when it is 9 AM MST?
On Oct 23, 2026, 9:00 AM MDT is 8:30 PM IST. On other dates the answer can shift by an hour because of daylight saving time; the table of periods on this page gives each one.
How many hours ahead of MST is IST?
It depends on the date. Oct 23, 2026 to Nov 1, 2026: IST is 11 hours 30 minutes ahead. Nov 1, 2026 to Mar 14, 2027: IST is 12 hours 30 minutes ahead. Mar 14, 2027 onwards: IST is 11 hours 30 minutes ahead.
Do MST and IST observe daylight saving time?
Mountain Time switches to MDT (UTC−6) in summer and back to MST (UTC−7) in winter. India Standard Time stays on UTC+5:30 all year.
What is the best time for a meeting between MST and IST?
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 30 minutes on a weekday: 8:00 AM–8:30 AM MDT, which is 7:30 PM–8:00 PM IST.
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Related conversions
- IST to MST (reverse)
- EST to IST
- CST to IST
- MST to EST
- MST to CST
- MST to PST
- MST to UTC
- MST to GMT
- MST to CET
- MST to SGT
- MST to JST
- MST to AEST
- All time zones
Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.