what timezone is colorado in?
Mountain Time Zone
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 Geography also allows Denver to have a considerable government presence , with many federal agencies based or having offices in the Denver area . Along with federal agencies come many companies based on US defense and space projects , and more jobs are brought to the city by virtue of its being the capital of the state of Colorado . The Denver area is home to the former nuclear weapons plant Rocky Flats , the Denver Federal Center , Byron G. Rogers Federal Building and United States Courthouse , the Denver Mint , and the National Renewable Energy Laboratory . 

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 Based on 30 @-@ year averages obtained from NOAA 's National Climatic Data Center for the months of December , January and February , Weather Channel ranked Denver the 18th coldest major U.S. city as of 2014 . 

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 Colorado came into the Union just in time to give enough electoral votes for Rutherford B. Hayes to win the Presidential Election of 1876 . 

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 Denver ( / ˈdɛnvər / ) , officially the City and County of Denver , is the capital and most populous municipality of the U.S. state of Colorado . Denver is located in the South Platte River Valley on the western edge of the High Plains just east of the Front Range of the Rocky Mountains . The Denver downtown district is located immediately east of the confluence of Cherry Creek with the South Platte River , approximately 12 mi ( 19 km ) east of the foothills of the Rocky Mountains . Denver is nicknamed the Mile @-@ High City because its official elevation is exactly one mile ( 5 @,@ 280 ft or 1 @,@ 610 m ) above sea level , making it one of the highest major cities in the United States . The 105th meridian west of Greenwich , the longitudinal reference for the Mountain Time Zone , passes directly through Denver Union Station . 

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 At 7 @,@ 000 feet ( 2 @,@ 130 m ) elevation , located adjacent to the largest contiguous Ponderosa Pine forest in North America , Flagstaff is located on a mountain surrounded by volcanoes , in the heart of the Coconino national forest . Any type of desert climate can be found below its elevation 100 miles from Flagstaff . The city is situated on the Rio de Flag , and is about 130 miles ( 210 km ) north of Phoenix . 
