Current Time in Castle Rock, Colorado, USA
12:54:08 AM
00:54:08
MDT (Mountain Daylight Time) · UTC−06:00
America/Denver
Time zone details
Castle Rock is observing daylight saving time in 2026
Daylight in Castle Rock
Location facts
Place
- Country
- USA
- State
- Colorado
- County
- Douglas County
- Place type
- City or town
- Country currency
- US Dollar (USD)
Practical
- Country languages
- English, Spanish, Hawaiian, French
- Dialing code
- +1
- Population
- 55,591
- Elevation
- 1,897 m
Geography
- Geographic coordinates
- 39° 22' N / 104° 51' W
Convert Castle Rock time
Compare Castle Rock with another city or time zone
Castle Rock follows the same clock and daylight-saving rules as Denver
Popular conversions (current offsets)
All times shown relative to Castle Rock local time
Clock changes in Castle Rock
2:00 AM MDT1:00 AM MST
Clocks move back 1 hour
2026
past
Daylight saving time starts
2:00 AM MST3:00 AM MDT
Clocks move forward 1 hour
upcoming
Daylight saving time ends
2:00 AM MDT1:00 AM MST
Clocks move back 1 hour
Future clock changes, 2027–2030
Sun & Moon details
Sun
- Sunrise
- Solar noon
- Sunset
- Daylight duration
- 10 hr 36 min2 min 19 sec shorter than the previous day
Twilight
- Civil twilight
- –
- Nautical twilight
- –
- Astronomical twilight
- –
View full Sun & Moon detailsHide full Sun & Moon details
Thursday, October 29, 2026
View Castle Rock on SavvyTime's time-zone map
Sun
- Sunrise
- Sunset
- Day length
- 10 hr 36 min2 min 19 sec shorter than the previous day
- Solar noon
- (37.0° altitude)
Civil twilight
- Dawn to dusk
- –
Additional twilight
- Nautical dawn to dusk
- –
- Astronomical dawn to dusk
- –
Moon
- Phase
- Waning Gibbous (83% illuminated)
- Moonrise
- Moonset
- Previous principal phase
- Full Moon — Sunday, October 25, 2026 at
- Next principal phase
- Third Quarter — Sunday, November 1, 2026 at
Seven-day daylight outlook
| Local date | Sunrise | Sunset | Day length | Daily change |
|---|---|---|---|---|
| 10 hr 36 min | 2 min 19 sec shorter than the previous day | |||
| 10 hr 34 min | 2 min 18 sec shorter than the previous day | |||
| 10 hr 32 min | 2 min 17 sec shorter than the previous day | |||
| 10 hr 29 min | 2 min 16 sec shorter than the previous day | |||
| 10 hr 27 min | 2 min 15 sec shorter than the previous day | |||
| 10 hr 25 min | 2 min 13 sec shorter than the previous day | |||
| 10 hr 23 min | 2 min 13 sec shorter than the previous day |
Weather forecast for Castle Rock
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Plan around Castle Rock
Upcoming public holidays in Colorado
- Veterans Day
- Thanksgiving Day
- Christmas Day
Nearby scheduled airports for Castle Rock, Colorado, USA
Denver International AirportDENLarge airport · Serves Denver56.4 km north-northeast
Source: OurAirports record · DEN / KDEN
About 56.4 km (35.0 mi) north-northeast of Castle Rock
Scheduled airline service in source data
Rocky Mountain Metropolitan AirportBJCMedium airport · Serves Denver63.7 km north-northwest
Source: OurAirports record · BJC / KBJC
About 63.7 km (39.6 mi) north-northwest of Castle Rock
Scheduled airline service in source data
City of Colorado Springs Municipal AirportCOSLarge airport · Serves Colorado Springs64.4 km south-southeast
Source: OurAirports record · COS / KCOS
About 64.4 km (40.0 mi) south-southeast of Castle Rock
Scheduled airline service in source data
Nearby places
Frequently asked questions
- What time zone is Castle Rock in?
- Castle Rock uses Mountain Standard Time (MST, UTC−7) in winter and Mountain Daylight Time (MDT, UTC−6) in summer. Its IANA time zone is America/Denver.
- When is the next clock change in Castle Rock?
- Clocks in Castle Rock move backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from MDT (UTC−06:00) to MST (UTC−07:00)
- Does Castle Rock observe daylight saving time?
- Yes. Castle Rock observes daylight saving time: MDT (UTC−6) in summer and MST (UTC−7) in winter.
- What is the UTC offset of Castle Rock?
- Castle Rock is UTC−7 in winter and UTC−6 in summer