TimezoneToolbox

IST to MST converter

MST is usually 11 h 30 min behind IST. It is 12 h 30 min behind IST 1 Jan–8 Mar and 1 Nov–31 Dec 2026, because of daylight saving time.

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IST to MST table

For 5 July 2026, when MST is 11 h 30 min behind IST. Other dates: see the table on the right.

ISTMST24-hour
12:00 AM12:30 PM prev. day0:00 → 12:30
1:00 AM1:30 PM prev. day1:00 → 13:30
2:00 AM2:30 PM prev. day2:00 → 14:30
3:00 AM3:30 PM prev. day3:00 → 15:30
4:00 AM4:30 PM prev. day4:00 → 16:30
5:00 AM5:30 PM prev. day5:00 → 17:30
6:00 AM6:30 PM prev. day6:00 → 18:30
7:00 AM7:30 PM prev. day7:00 → 19:30
8:00 AM8:30 PM prev. day8:00 → 20:30
9:00 AM9:30 PM prev. day9:00 → 21:30
10:00 AM10:30 PM prev. day10:00 → 22:30
11:00 AM11:30 PM prev. day11:00 → 23:30
12:00 PM12:30 AM 12:00 → 0:30
1:00 PM1:30 AM 13:00 → 1:30
2:00 PM2:30 AM 14:00 → 2:30
3:00 PM3:30 AM 15:00 → 3:30
4:00 PM4:30 AM 16:00 → 4:30
5:00 PM5:30 AM 17:00 → 5:30
6:00 PM6:30 AM 18:00 → 6:30
7:00 PM7:30 AM 19:00 → 7:30
8:00 PM8:30 AM 20:00 → 8:30
9:00 PM9:30 AM 21:00 → 9:30
10:00 PM10:30 AM 22:00 → 10:30
11:00 PM11:30 AM 23:00 → 11:30

When the difference changes

Computed from the IANA tz database (release 2026c). Governments can change these rules; the live converter uses your browser’s own copy of the database.

2026: from (UTC)until (UTC)MST vs IST
1 January 20268 March 202612 h 30 min behind
8 March 20261 November 202611 h 30 min behind
1 November 202631 December 202612 h 30 min behind
2027: from (UTC)until (UTC)MST vs IST
1 January 202714 March 202712 h 30 min behind
14 March 20277 November 202711 h 30 min behind
7 November 202731 December 202712 h 30 min behind

IST: India Standard Time · IST time now
IST can also mean Irish Standard Time or Israel Standard Time. This page means India (Asia/Kolkata), which has one zone and no daylight saving time.

MST: Mountain Time · MST time now
Arizona (America/Phoenix) stays on MST all year, so for part of the year it matches Pacific Time instead of Denver.

Related converters

Questions

What is the time difference between IST and MST?

MST is usually 11 h 30 min behind IST. It is 12 h 30 min behind IST 1 Jan–8 Mar and 1 Nov–31 Dec 2026, because of daylight saving time.

What is 9 am IST in MST?

9:00 am IST is 9:30 PM MST the previous day, on dates when the usual difference applies. Use the converter above for any specific date.

Which IST does this page use?

IST can also mean Irish Standard Time or Israel Standard Time. This page means India (Asia/Kolkata), which has one zone and no daylight saving time.

Which MST does this page use?

Arizona (America/Phoenix) stays on MST all year, so for part of the year it matches Pacific Time instead of Denver.