Time in Colorado Now
See Colorado time beside the time in your selected zone, then find shared 9 AM–6 PM hours for a call.
Mountain Time · MST / MDT
Reading the Colorado date…
Reading zone…Checking your device clock…
Colorado uses Mountain Time
Colorado uses Mountain Standard Time at UTC−7 in standard time and Mountain Daylight Time at UTC−6 during daylight saving time. This page uses the canonical IANA identifier America/Denver for both the live clock and selected-date calculations.
Colorado has one statewide time zone
Denver, Colorado Springs, Aurora, Fort Collins, Boulder, Aspen, and the rest of Colorado share the same civil clock. Nearby states can have different rules—most notably Arizona—so select a location and date rather than assuming every Mountain Time place matches Colorado year-round.
Colorado versus Eastern and Pacific Time
Colorado is normally two hours behind New York and one hour ahead of Los Angeles because these locations follow the same federal daylight-saving dates. The abbreviations are normally paired as MST/EST in winter and MDT/EDT in summer. A short exception occurs on clock-change days because each zone changes at 2 AM local time. The planner calculates the selected date, avoiding mixed-label mistakes such as comparing MDT with EST.
Find shared daytime hours for a call
Choose a Colorado date and your time zone. The planner converts Colorado's full 9:00 AM–6:00 PM window, preserves the calendar date, and finds the intersection with 9:00 AM–6:00 PM in your selected zone. If there is no intersection, it says so instead of suggesting an overnight call.
Method, scope, and privacy
The 9 AM–6 PM windows are planning defaults, not official hours for every organization. Calculations run in your browser with IANA time-zone data. The optional ToolNeko server check only estimates whether your device clock is noticeably offset; it is not an atomic-clock or NTP service. The page does not request location permission or send your selected date and zone to ToolNeko.
Frequently asked questions
What time is it in Colorado?
The live clock above shows the current time in Colorado with seconds and the current MST or MDT abbreviation. Colorado uses Mountain Time.
Are there two time zones in Colorado?
No. Colorado uses one civil time zone statewide. Denver, Colorado Springs, Boulder, Aspen, and other Colorado cities share Mountain Time.
Is Denver two or three hours behind Eastern Time?
Denver is normally two hours behind locations such as New York. Comparing fixed MST with fixed EDT creates a three-hour difference, while fixed MDT and EST differ by one hour. On U.S. clock-change days there is also a short transition window because each zone changes at 2 AM local time, so use a date and location instead of mixing abbreviations.
Is Denver on EST or PST?
Neither. Denver and Colorado use Mountain Time: MST at UTC−7 in standard time and MDT at UTC−6 during daylight saving time.
Does Colorado observe daylight saving time?
Yes. Colorado follows the federal U.S. daylight-saving schedule, so its UTC offset changes between MST and MDT.
How do I find a good time to call Colorado?
Select your time zone and the Colorado date. The planner converts Colorado's sample 9 AM–6 PM window and shows any hours when both places are between 9 AM and 6 PM.