105th meridian west
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The meridian 105° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole. The 105th meridian west serves as the reference meridian for the seventh time zone west of Greenwich, known as UTC-07 or the Mountain Time Zone in North America.
In Canada, the meridian 105° west of Greenwich passes through Nunavut, the Northwest Territories, and Saskatchewan.
In the United States, the meridian 105° west of Greenwich passes through Montana, Wyoming, Colorado, New Mexico, and Texas. Interstate Highway I-25 roughly parallels the meridian from Douglas, Wyoming to Las Vegas, New Mexico. The meridian 105° west of Greenwich bisects Denver, Colorado, running parallel to Kalamath Street and passing through Denver Union Station.
In Mexico, the meridian 105° west of Greenwich passes through Chihuahua, Durango, Nayarit, and Jalisco.
