Convert Mountain Daylight Time to India Standard Time
Instantly convert Mountain Daylight Time (MDT) to India Standard Time (IST) with our free online calculator.
Mountain Daylight Time
11:20:54 PM
Tue, Jun 23 (MDT)
India Standard Time
10:50:54 AM
Wed, Jun 24 (IST)
Convert a Specific Time
24-Hour Comparison
| MDT | IST |
|---|---|
| 12:00 AM | 11.5:00 AM |
| 1:00 AM | 0.5:00 PM |
| 2:00 AM | 1.5:00 PM |
| 3:00 AM | 2.5:00 PM |
| 4:00 AM | 3.5:00 PM |
| 5:00 AM | 4.5:00 PM |
| 6:00 AM | 5.5:00 PM |
| 7:00 AM | 6.5:00 PM |
| 8:00 AM | 7.5:00 PM |
| 9:00 AM | 8.5:00 PM |
| 10:00 AM | 9.5:00 PM |
| 11:00 AM | 10.5:00 PM |
| 12:00 PM | 11.5:00 PM |
| 1:00 PM | 0.5:00 AM(+1d) |
| 2:00 PM | 1.5:00 AM(+1d) |
| 3:00 PM | 2.5:00 AM(+1d) |
| 4:00 PM | 3.5:00 AM(+1d) |
| 5:00 PM | 4.5:00 AM(+1d) |
| 6:00 PM | 5.5:00 AM(+1d) |
| 7:00 PM | 6.5:00 AM(+1d) |
| 8:00 PM | 7.5:00 AM(+1d) |
| 9:00 PM | 8.5:00 AM(+1d) |
| 10:00 PM | 9.5:00 AM(+1d) |
| 11:00 PM | 10.5:00 AM(+1d) |
How to Convert Mountain Daylight Time to India Standard Time
Formula
To convert Mountain Daylight Time (MDT) to India Standard Time (IST): Convert MDT to IST
About Mountain Daylight Time (MDT)
Mountain Daylight Time (MDT, IANA: America/Denver during DST window) is the summer-time variant of MST, set at UTC-6:00 — observed from the second Sunday in March to the first Sunday in November per the Energy Policy Act of 2005. MDT shares the same UTC offset as Central Standard Time (CST), which can cause cross-time-zone scheduling confusion during the DST transition windows in March and November. The Navajo Nation in northeastern Arizona does observe MDT (unlike the rest of Arizona), creating one of the rare US sub-state time-zone exceptions per the Navajo Nation Council's 1968 resolution. MDT applies in Colorado, Utah, Wyoming, Montana, Idaho east, New Mexico, parts of Texas, and Canadian Rocky Mountain provinces (Alberta, eastern BC). Used in coordination of: Denver International Airport flight operations, ski-area lift hours during shoulder-season DST window, Yellowstone National Park ranger schedules, US National Renewable Energy Lab operations, and FAA Albuquerque ARTCC ATC operations.
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.