Convert MST to IST
IST is 12.5 hours ahead of MST. MST is UTC−7 and IST is UTC+5:30.
Right now: MST · IST
Best time to schedule a meeting
Standard 9–5 working hours do not overlap at all between MST and IST. Someone has to take an early or late call — or use asynchronous communication instead.
| MST | IST | Suitable? |
|---|---|---|
| 9:00 AM | 9:30 PM | outside 9–5 |
| 10:00 AM | 10:30 PM | outside 9–5 |
| 11:00 AM | 11:30 PM | outside 9–5 |
| 12:00 PM | 12:30 AM (next day) | outside 9–5 |
| 1:00 PM | 1:30 AM (next day) | outside 9–5 |
| 2:00 PM | 2:30 AM (next day) | outside 9–5 |
| 3:00 PM | 3:30 AM (next day) | outside 9–5 |
| 4:00 PM | 4:30 AM (next day) | outside 9–5 |
| 5:00 PM | 5:30 AM (next day) | outside 9–5 |
MST to IST conversion table
| MST | IST |
|---|---|
| 12:00 AM | 12:30 PM |
| 1:00 AM | 1:30 PM |
| 2:00 AM | 2:30 PM |
| 3:00 AM | 3:30 PM |
| 4:00 AM | 4:30 PM |
| 5:00 AM | 5:30 PM |
| 6:00 AM | 6:30 PM |
| 7:00 AM | 7:30 PM |
| 8:00 AM | 8:30 PM |
| 9:00 AM | 9:30 PM |
| 10:00 AM | 10:30 PM |
| 11:00 AM | 11:30 PM |
| 12:00 PM | 12:30 AM (next day) |
| 1:00 PM | 1:30 AM (next day) |
| 2:00 PM | 2:30 AM (next day) |
| 3:00 PM | 3:30 AM (next day) |
| 4:00 PM | 4:30 AM (next day) |
| 5:00 PM | 5:30 AM (next day) |
| 6:00 PM | 6:30 AM (next day) |
| 7:00 PM | 7:30 AM (next day) |
| 8:00 PM | 8:30 AM (next day) |
| 9:00 PM | 9:30 AM (next day) |
| 10:00 PM | 10:30 AM (next day) |
| 11:00 PM | 11:30 AM (next day) |
About MST
Mountain Standard Time (MST) is UTC−7. It is used in Denver and Salt Lake City in winter, and Phoenix all year.
About IST
India Standard Time (IST) is UTC+5:30. It is used in all of India and Sri Lanka, on a half-hour offset.
A warning about daylight saving
The abbreviations on this page each denote a single fixed offset, so every figure here is exact. What changes is which abbreviation a place uses. New York is on EST in January and EDT in July, so "New York time" moves by an hour twice a year while EST and EDT themselves never move. When you schedule across zones, name the city rather than the abbreviation, or use UTC — that is what calendar software does internally.
Frequently asked questions
What time is 9:00 AM MST in IST?
9:00 AM MST is 9:30 PM IST.
Is IST ahead of MST?
IST is 12.5 hours ahead of MST.
Which time zone does this use?
MST is UTC−7 and IST is UTC+5:30. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.