Mountain Time Zone is generically called Mountain Time (MT). Specifically, it is Mountain Standard Time (MST) when observing standard time, and Mountain Daylight Time (MDT) when observing daylight saving time. The term refers to how the Rocky Mountains, which range from northwestern Canada to the US state of New Mexico, are located almost entirely in the time zone. In Mexico, this time zone is known as the Zona Pacífico (Pacific Zone). In the US and Canada, the Mountain Time Zone is to the east of the Pacific Time Zone and to the west of the Central Time Zone. In some areas, starting in
Southcentral Alaska Mount Wrangell. The Cook Inlet volcanoes, located in the Tordrillo Mountains and in the north end of the Aleutian Range, are newer, lie in the West, and include Mount Redoubt, Mount Iliamna, Hayes Volcano, Mount Augustine, Fourpeaked Mountain and Mount Spurr. Most recently, Augustine and Fourpeaked erupted in 2006, and Mount Redoubt erupted in March 2009, resulting in airplane flight cancellations. Southcentral Alaska Southcentral Alaska is the portion of the U.S. state of Alaska consisting of the shorelines and uplands of the central Gulf of Alaska. Most of the population of the state lives in this region, concentrated in and