Timezone conversion
IST to MST Time — Convert India Standard Time to Mountain Standard Time (US)
MST is currently 11 hours and 30 minutes behind IST. The gap shifts across the year: around January MST is 12 hours and 30 minutes behind IST, and around July it is 11 hours and 30 minutes behind IST, because one or both zones observe daylight saving.
MST is currently 11 hours and 30 minutes behind IST.
Abbreviation disambiguation
On Clockjumper, IST refers to India Standard Time (UTC+5:30). The same three letters are also used for Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1) — check the city or UTC offset to be sure which is meant.
MST is Mountain Standard Time (UTC−7). Most of the US Mountain zone switches to MDT (UTC−6) in summer, but Arizona (except the Navajo Nation) stays on MST year-round.
Interactive converter
12:00PM
Select both cities to see the converted time.
Full IST to MST conversion table
| IST | MST |
|---|---|
| 12:00 AM | 12:30 PM(previous day) |
| 1:00 AM | 1:30 PM(previous day) |
| 2:00 AM | 2:30 PM(previous day) |
| 3:00 AM | 3:30 PM(previous day) |
| 4:00 AM | 4:30 PM(previous day) |
| 5:00 AM | 5:30 PM(previous day) |
| 6:00 AM | 6:30 PM(previous day) |
| 7:00 AM | 7:30 PM(previous day) |
| 8:00 AM | 8:30 PM(previous day) |
| 9:00 AM | 9:30 PM(previous day) |
| 10:00 AM | 10:30 PM(previous day) |
| 11:00 AM | 11:30 PM(previous day) |
| 12:00 PM | 12:30 AM |
| 1:00 PM | 1:30 AM |
| 2:00 PM | 2:30 AM |
| 3:00 PM | 3:30 AM |
| 4:00 PM | 4:30 AM |
| 5:00 PM | 5:30 AM |
| 6:00 PM | 6:30 AM |
| 7:00 PM | 7:30 AM |
| 8:00 PM | 8:30 AM |
| 9:00 PM | 9:30 AM |
| 10:00 PM | 10:30 AM |
| 11:00 PM | 11:30 AM |
Daylight saving and how the gap changes
Around January MST is 12 hours and 30 minutes behind IST. Around July it is 11 hours and 30 minutes behind IST. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.
Frequently asked questions
- Is MST ahead of or behind IST right now?
- MST is currently 11 hours and 30 minutes behind IST.
- What is the current IST to MST time difference?
- Right now the gap is 11 hours and 30 minutes — MST is 11 hours and 30 minutes behind IST.
- Does the IST → MST offset change during the year?
- Yes. Around January MST is 12 hours and 30 minutes behind IST; around July it is 11 hours and 30 minutes behind IST. The converter above always reflects the correct offset for the date you pick.
- Does IST observe daylight saving time?
- No — India Standard Time stays at a fixed UTC offset year-round.
- Does MST observe daylight saving time?
- MST is itself the standard-time form. Mountain Standard Time (US) is in force at UTC-7 through the winter months; outside that window the same zone is on MDT (UTC-6).
- What time is 3 AM IST in MST?
- 3:00 AM IST is 3:30 PM (previous day) MST.
- What time is 8 AM IST in MST?
- 8:00 AM IST is 8:30 PM (previous day) MST.
- What time is 9 AM IST in MST?
- 9:00 AM IST is 9:30 PM (previous day) MST.
- What time is 10 AM IST in MST?
- 10:00 AM IST is 10:30 PM (previous day) MST.
- What time is 11 AM IST in MST?
- 11:00 AM IST is 11:30 PM (previous day) MST.
- What time is 12 PM (noon) IST in MST?
- 12:00 PM IST is 12:30 AM MST.
- What time is 2 PM IST in MST?
- 2:00 PM IST is 2:30 AM MST.
- What time is 3 PM IST in MST?
- 3:00 PM IST is 3:30 AM MST.
- What time is 4 PM IST in MST?
- 4:00 PM IST is 4:30 AM MST.
- What time is 5 PM IST in MST?
- 5:00 PM IST is 5:30 AM MST.
- What time is 9 PM IST in MST?
- 9:00 PM IST is 9:30 AM MST.
- What time is 10 PM IST in MST?
- 10:00 PM IST is 10:30 AM MST.
- When is the best time to schedule a call between IST and MST?
- IST and MST have no direct 09:00–17:00 overlap on the same calendar day. Consider early-morning or late-evening slots on one side, or an asynchronous handoff.
- What time zone does IST refer to?
- IST refers to India Standard Time (IANA: Asia/Kolkata).
- What time zone does MST refer to?
- MST refers to Mountain Standard Time (US) (IANA: America/Denver).
- Is IST on this page the same as other zones that share the letters "IST"?
- On Clockjumper, IST refers to India Standard Time (UTC+5:30). The same three letters are also used for Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1) — check the city or UTC offset to be sure which is meant.
- Is MST on this page the same as other zones that share the letters "MST"?
- MST is Mountain Standard Time (UTC−7). Most of the US Mountain zone switches to MDT (UTC−6) in summer, but Arizona (except the Navajo Nation) stays on MST year-round.