Current Time in Denver
United States — America/Denver
About Time in Denver
Denver operates on Mountain Time (IANA: America/Denver). During standard time, this is Mountain Standard Time (MST) at UTC-7, shifting to Mountain Daylight Time (MDT) at UTC-6 from the second Sunday of March to the first Sunday of November. The transition occurs at 2:00 AM local time.
Denver is 2 hours behind New York, 1 hour behind Chicago, and 1 hour ahead of Los Angeles. It is 8 hours behind Paris during European winter and 7 hours behind during summer. The Mountain Time zone is the least populated of the four continental US time zones, but covers a vast geographic area from Montana to New Mexico.
Mountain Time gives Denver a strategic position between the coasts. The city has become a major hub for federal government agencies and aerospace companies, partly because its time zone allows for overlap with both East Coast and West Coast business hours during a standard workday. When it is 10 AM in Denver, it is noon in New York and 9 AM in San Francisco, making mid-morning meetings accessible to colleagues nationwide.
Time Facts
NORAD (North American Aerospace Defense Command) operates from nearby Colorado Springs on Mountain Time, tracking over 27,000 objects in space around the clock from its operations center.
Denver's nickname, the 'Mile High City,' refers to its elevation of exactly 5,280 feet — and at this altitude, the thinner atmosphere means sunsets appear to last slightly longer due to enhanced atmospheric refraction.
Arizona, Denver's neighbor to the southwest, does not observe daylight saving time, meaning Denver and Phoenix are on the same time in summer (both UTC-7) but Denver falls behind in winter (UTC-7 vs Arizona's permanent UTC-7).
The US National Institute of Standards and Technology (NIST) radio stations WWV and WWVB, which broadcast the official US time signal, are located in Fort Collins, Colorado — just 65 miles north of Denver.
Business Hours
Standard business hours in Denver are 9:00 AM to 5:00 PM MT (16:00-00:00 UTC during MST, 15:00-23:00 UTC during MDT).