MT, or mountain time, is a time zone in North America that is seven hours behind Coordinated Universal Time (UTC-7). It is primarily observed in the western United States, parts of Canada, and some regions in Mexico. During daylight saving time, which typically runs from the second Sunday in March to the first Sunday in November, the time zone shifts to UTC-6. The Mountain Time Zone includes major cities such as Denver, Salt Lake City, and Phoenix. It is known for its diverse geography, including mountains, deserts, and forests, making it a popular destination for outdoor activities like hiking and skiing.