Convert Mountain Daylight Time to Newfoundland Standard Time
Instantly convert Mountain Daylight Time (MDT) to Newfoundland Standard Time (NST) with our free online calculator.
Mountain Daylight Time
11:20:54 PM
Tue, Jun 23 (MDT)
Newfoundland Standard Time
01:50:54 AM
Wed, Jun 24 (NST)
Convert a Specific Time
24-Hour Comparison
| MDT | NST |
|---|---|
| 12:00 AM | 2.5:00 AM |
| 1:00 AM | 3.5:00 AM |
| 2:00 AM | 4.5:00 AM |
| 3:00 AM | 5.5:00 AM |
| 4:00 AM | 6.5:00 AM |
| 5:00 AM | 7.5:00 AM |
| 6:00 AM | 8.5:00 AM |
| 7:00 AM | 9.5:00 AM |
| 8:00 AM | 10.5:00 AM |
| 9:00 AM | 11.5:00 AM |
| 10:00 AM | 0.5:00 PM |
| 11:00 AM | 1.5:00 PM |
| 12:00 PM | 2.5:00 PM |
| 1:00 PM | 3.5:00 PM |
| 2:00 PM | 4.5:00 PM |
| 3:00 PM | 5.5:00 PM |
| 4:00 PM | 6.5:00 PM |
| 5:00 PM | 7.5:00 PM |
| 6:00 PM | 8.5:00 PM |
| 7:00 PM | 9.5:00 PM |
| 8:00 PM | 10.5:00 PM |
| 9:00 PM | 11.5:00 PM |
| 10:00 PM | 0.5:00 AM(+1d) |
| 11:00 PM | 1.5:00 AM(+1d) |
How to Convert Mountain Daylight Time to Newfoundland Standard Time
Formula
To convert Mountain Daylight Time (MDT) to Newfoundland Standard Time (NST): Convert MDT to NST
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 Newfoundland Standard Time (NST)
Newfoundland Standard Time (NST, IANA: America/St_Johns) is one of the world's few time zones with a 30-minute offset, set at UTC-3:30. NST is observed exclusively in the Canadian province of Newfoundland and Labrador (the island portion of the province and southeastern Labrador), serving approximately 500,000 residents. The 30-minute offset is preserved from the 1884 International Meridian Conference compromise that established time zones — Newfoundland Time was chosen because the island's longitudinal position (52.7°W central meridian for St. John's) falls between Atlantic and Eastern time zones, and the province's parliament voted to keep its own dedicated offset rather than align with neighboring provinces. NST observes Daylight Saving Time per the Canadian aligned schedule (switching to NDT = UTC-2:30 from March to November). Other 30/45-minute offset zones globally: India (IST UTC+5:30), Nepal (UTC+5:45), Myanmar (UTC+6:30), Iran (UTC+3:30), Afghanistan (UTC+4:30), Sri Lanka (UTC+5:30), Marquesas (UTC-9:30). NST affects: cod-fishing and offshore oil platform operations on the Grand Banks, ferry schedules to Cape Breton, and the historic Cabot Tower St. John's noon-gun.