Current local time in Castle Rock, United States
MDT · UTC-06:00 · Mountain Daylight Time
About Castle Rock
Castle Rock, Colorado, United States uses the Mountain Daylight Time time zone (America/Denver), currently UTC-06:00. Population: about 55,591.
| Country: | United States |
|---|---|
| State / region: | Colorado |
| Coordinates: | 39°22′N / 104°51′W |
| Population: | 55,591 |
| Currency: | United States dollar (USD) |
| Languages: | English |
| Country calling code: | +1 |
Time zone in Castle Rock
| IANA time zone: | America/Denver |
|---|---|
| Time zone name: | Mountain Daylight Time (MDT) |
| Current UTC offset: | UTC-06:00 |
| UTC time now: | |
| Zones in United States: | 29 — see all |
Daylight saving time
Castle Rock is currently on daylight saving time. Clocks go back 1 hour on Sunday, 1 November 2026, to UTC-07:00.
| Next clock change: | Sunday, 1 November 2026 |
|---|---|
| Local time jumps: | from 02:00 to 01:00 (back 60 minutes) |
| New offset: | UTC-07:00 (MST) |
Sunrise and sunset in Castle Rock today
| Sunrise: | 07:15 |
|---|---|
| Sunset: | 18:12 |
| Solar noon: | 12:43 |
| Day length: | 10h 56m |
| Civil twilight: | 06:48 – 18:39 |
Calculated for 2026-10-21 at the city’s coordinates using PHP’s solar position algorithm; times are local (MDT) and approximate to about a minute.
Time difference from Castle Rock
- London−7 hCastle Rock is 7 hours behind London
- New York−2 hCastle Rock is 2 hours behind New York
- Abuja−7 hCastle Rock is 7 hours behind Abuja
Frequently asked questions about Castle Rock time
What time zone is Castle Rock in?
Castle Rock uses the IANA time zone America/Denver (Mountain Daylight Time). The current offset is UTC-06:00.
Does Castle Rock observe daylight saving time?
Castle Rock is currently on daylight saving time. Clocks go back 1 hour on Sunday, 1 November 2026, to UTC-07:00.
What is the time difference between Castle Rock and London?
Right now Castle Rock is 7 hours behind London. The difference can change when either place changes its clocks; use the comparison tool for a specific date.
What is the time difference between Castle Rock and New York?
Right now Castle Rock is 2 hours behind New York. The difference can change when either place changes its clocks; use the comparison tool for a specific date.