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Convert Mountain Standard Time to India Standard Time

Instantly convert Mountain Standard Time (MST) to India Standard Time (IST) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Mountain Standard Time

10:20:53 PM

Tue, Jun 23 (MST)

India Standard Time

10:50:53 AM

Wed, Jun 24 (IST)

IST is +12.5 hours from MST

Convert a Specific Time

MST

24-Hour Comparison

MSTIST
12:00 AM0.5:00 PM
1:00 AM1.5:00 PM
2:00 AM2.5:00 PM
3:00 AM3.5:00 PM
4:00 AM4.5:00 PM
5:00 AM5.5:00 PM
6:00 AM6.5:00 PM
7:00 AM7.5:00 PM
8:00 AM8.5:00 PM
9:00 AM9.5:00 PM
10:00 AM10.5:00 PM
11:00 AM11.5:00 PM
12:00 PM0.5:00 AM(+1d)
1:00 PM1.5:00 AM(+1d)
2:00 PM2.5:00 AM(+1d)
3:00 PM3.5:00 AM(+1d)
4:00 PM4.5:00 AM(+1d)
5:00 PM5.5:00 AM(+1d)
6:00 PM6.5:00 AM(+1d)
7:00 PM7.5:00 AM(+1d)
8:00 PM8.5:00 AM(+1d)
9:00 PM9.5:00 AM(+1d)
10:00 PM10.5:00 AM(+1d)
11:00 PM11.5:00 AM(+1d)

How to Convert Mountain Standard Time to India Standard Time

Formula

To convert Mountain Standard Time (MST) to India Standard Time (IST): Convert MST to IST

About Mountain Standard Time (MST)

Mountain Standard Time (MST, IANA: America/Denver and America/Phoenix) is the time zone for the US Mountain region and most of Canada's Rocky Mountain provinces, set at UTC-7:00. MST is observed from the first Sunday in November to the second Sunday in March; the region switches to Mountain Daylight Time (MDT = UTC-6:00) for the remainder of the year — EXCEPT for the State of Arizona (excluding Navajo Nation), which stays on MST year-round per Arizona Revised Statutes §1-242. Major MST cities: Denver, Phoenix, Salt Lake City, Albuquerque, El Paso, Tucson, Calgary, Edmonton. MST covers Colorado, Utah, Wyoming, Montana, Idaho (most), New Mexico, Arizona, parts of Texas + Mexico (Sonora). Population ~17 million in the time zone. Affects: NORAD Cheyenne Mountain operations, Denver Mile-High Stadium NFL game scheduling, Colorado ski-resort lift-operating hours, US Bureau of Land Management permit operations, and the Mormon Tabernacle Choir broadcast schedule from Salt Lake City.

About India Standard Time (IST)

India Standard Time (IST, IANA: Asia/Kolkata) is the civil time of the Republic of India and Sri Lanka, set at UTC+5:30 — one of the world's most populous 30-minute-offset time zones. India does not observe Daylight Saving Time per the Government of India directive (a brief DST trial in 1942-1945 during WWII was discontinued; subsequent proposals from 2010-2017 were rejected by the Indian Government citing minimal energy savings + agricultural sector disruption). IST is defined as the local mean solar time at 82.5°E longitude (passing through Shankargarh fort in Uttar Pradesh, with the reference clock at the National Physical Laboratory in New Delhi per the Indian Institute of Astrophysics). The 30-minute offset is preserved because India's east-west extent (68°E to 97°E) spans ~28° of longitude — approximately 2 hours of solar time — and the central meridian is most representative for a single unified zone. IST serves approximately 1.4 billion people in India + 22 million in Sri Lanka (Sri Lanka observes SLST = UTC+5:30, identical to IST). Major cities: Mumbai (12.5M), Delhi (16.8M, NCR 29M), Bengaluru (8.4M), Hyderabad (10M), Chennai (7M), Kolkata (4.5M), Ahmedabad (5.5M), Pune (3.1M). Affects: BSE/NSE stock exchanges, IPL Indian Premier League cricket schedules.

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