Denver is 2 hours behind Atlanta. When it's 12:00 PM in Atlanta, it's 10:00 AM in Denver. Both cities observe DST, maintaining the 2-hour difference year-round.
Atlanta uses ET (Eastern Time) while Denver uses MT (Mountain Time).
Business hours overlap significantly! 9:00 AM - 5:00 PM Atlanta corresponds to 7:00 AM - 3:00 PM Denver. Consider calling later in Atlanta's day to reach Denver during standard work hours.
Delta and Southwest operate frequent direct flights between Atlanta Hartsfield-Jackson and Denver International Airport.