United States · Colorado
Current local time in Castle Rock
Castle Rock keeps time on the America/Denver zone, currently UTC−6. The offset shifts twice a year with daylight saving, and the clock below always reflects the rule in force today. The clock runs live in your browser; nothing about your location is sent anywhere.
Current local time
Castle Rock, Colorado
Castle Rock time zone at a glance
- IANA time zone
- America/Denver
- Current UTC offset
- UTC−6
- Daylight saving
- Observed
- Next clock change
- Sun, Nov 1, 2026 → UTC−7
- Country
- United States
- Region
- Colorado
- Coordinates
- 39.37°, -104.86°
- Population
- 55,591
- Local date
- Tue, Sep 1, 2026
Sunrise and sunset in Castle Rock today
Computed from Castle Rock's latitude and longitude for the current local date. Times shift by a minute or two either side depending on elevation and the horizon you actually see.
- Sunrise
- 6:32 AM
- Sunset
- 7:25 PM
- Solar noon
- 12:59 PM
- Day length
- 12h 53m
- Civil dawn
- 6:00 AM
- Civil dusk
- 7:57 PM
- Golden hour ends
- 7:03 AM
- Golden hour begins
- 6:54 PM
Castle Rock time difference from major cities
| City | Local time now | Castle Rock is |
|---|---|---|
| Los AngelesUnited States | 03:10 PM | 1h ahead |
| LondonUnited Kingdom | 11:10 PM | 7h behind |
| DubaiUnited Arab Emirates | 02:10 AM | 10h behind |
| TokyoJapan | 07:10 AM | 15h behind |
Need a different pair? Compare any two cities or convert a specific time.
Castle Rocktime — questions & answers
- What time is it in Castle Rock right now?
- Castle Rock is on America/Denver, currently UTC−6. The clock at the top of this page shows the live local time and updates every second in your browser.
- What time zone is Castle Rock in?
- Castle Rock uses the IANA time zone America/Denver, which is UTC−6 at the moment. The offset shifts across the year because the zone observes daylight saving time.
- Does Castle Rock observe daylight saving time?
- Yes. The next change is on Sun, Nov 1, 2026, shifting the offset to UTC−7.
- What time do the sun rise and set in Castle Rock today?
- Today the sun rises at about 6:32 AM and sets at about 7:25 PM local time in Castle Rock, giving roughly 12h 53m of daylight. Solar noon falls at 12:59 PM.
Working with Castle Rock time
Scheduling across America/Denver is where most calendar mistakes start — a meeting agreed in one zone drifts by an hour the moment either side changes its clocks. These tools each handle a piece of that problem.