Current time in Castle Rock, United States
· week 43 · day 294/365
Time zone Castle Rock
Time difference with your location
Castle Rock is 6 hours behind UTC. Compare with your local time →
Castle Rock time now
Castle Rock at a glance
- Time zone
- MDT
- UTC offset
- UTC−6
- Next change
- → MST
- Sunrise
- 07:16
- Sunset
- 18:13
- Day length
- 10 h 57 min
- Your time
- Compare →
Time zone in Castle Rock
Castle Rock is on MDT (UTC−6) now; clocks go back 1 hour to MST (UTC−7) on Sun, Nov 1, 2026 at 02:00.
- IANA time zone
- America/Denver
- Standard time
- MST · UTC−7 · Mountain Standard Time
- Daylight saving time
- MDT · UTC−6 · Mountain Daylight Time
- Last change
- Next change
| Date | Local clock | New offset |
|---|---|---|
| 02:00 → 03:00 | MDT UTC−6 | |
| 02:00 → 01:00 | MST UTC−7 | |
| 02:00 → 03:00 | MDT UTC−6 | |
| 02:00 → 01:00 | MST UTC−7 | |
| 02:00 → 03:00 | MDT UTC−6 | |
| · next | 02:00 → 01:00 | MST UTC−7 |
| 02:00 → 03:00 | MDT UTC−6 | |
| 02:00 → 01:00 | MST UTC−7 | |
| 02:00 → 03:00 | MDT UTC−6 | |
| 02:00 → 01:00 | MST UTC−7 |
Time difference with world cities · Castle Rock
Current local times, including each location’s current daylight saving offset.
| Location | Time | Difference | During MST |
|---|---|---|---|
| Los Angeles | ☀PDT | −1h | = |
| Mexico City | ☀CST | same time | +1h |
| Washington D.C. | ☀EDT | +2h | = |
| London | ☀BST | +7h | = |
| Abuja | ☀WAT | +7h | +8h |
| Dublin | ☀IST | +7h | = |
| Berlin | ☀CEST | +8h | = |
| Madrid | ☀CEST | +8h | = |
| Rome | ☀CEST | +8h | = |
| Paris | ☀CEST | +8h | = |
| Jerusalem | ☀IDT | +9h | = |
| Riyadh | ☀AST | +9h | +10h |
| Ankara | ☀TRT | +9h | +10h |
| Dubai | ☀GST | +10h | +11h |
| New Delhi | ☀IST | +11h30m | +12h30m |
| Hanoi | ☀ICT | +13h | +14h |
| Bangkok | ☀ICT | +13h | +14h |
| Manila | ☀PHT | +14h | +15h |
| Beijing | ☀CST | +14h | +15h |
| Tokyo | ☀JST | +15h | +16h |
| Seoul | ☀KST | +15h | +16h |
| Canberra | ☀AEDT | +17h | +18h |
| Sydney | ☀AEDT | +17h | +18h |
| Wellington | ☀NZDT | +19h | +20h |
The last column shows the difference while Castle Rock is on MST (UTC−7); “=” means unchanged.
Sun and Moon in Castle Rock
· MDT — Today in Castle Rock the sun rises at 07:16 and sets at 18:13: 10 h 57 min of daylight, 3 min shorter than yesterday.
| Civil dawn | |
|---|---|
| Sunrise | |
| Solar noon | |
| Sunset | |
| Civil dusk | |
| Day length | 10 h 57 min · 3 min shorter |
| Sun vs clock | sun 45 min behind |
| Tomorrow ↑ ↓ | 07:17 · 18:12 |
| Moon | Waxing gibbous, 78% lit |
Nearby places and the same time zone
Nearby cities
- Highlands Ranch22 km
- Centennial23 km
- Aurora40 km
- Denver42 km
- Lakewood42 km
- Commerce City49 km
- Arvada52 km
- Westminster54 km
- Thornton56 km
- Colorado Springs60 km
- Broomfield64 km
- Boulder80 km
Quick time conversion Castle Rock ↔ UTC, EST, IST, CET
Each row is a full local hour. Zone columns use their named fixed offsets.
- Working hours
- Outside working hours
- Night hours
| Castle Rock (MDT) | UTC time UTC+0 | EST time UTC-5 | IST time UTC+5:30 | CET time UTC+1 |
|---|---|---|---|---|
| 00:0012:00 AM | 06:006:00 AM | 01:001:00 AM | 11:3011:30 AM | 07:007:00 AM |
| 02:002:00 AM | 08:008:00 AM | 03:003:00 AM | 13:301:30 PM | 09:009:00 AM |
| 04:004:00 AM | 10:0010:00 AM | 05:005:00 AM | 15:303:30 PM | 11:0011:00 AM |
| 06:006:00 AM | 12:0012:00 PM | 07:007:00 AM | 17:305:30 PM | 13:001:00 PM |
| 08:008:00 AM | 14:002:00 PM | 09:009:00 AM | 19:307:30 PM | 15:003:00 PM |
| 10:0010:00 AM | 16:004:00 PM | 11:0011:00 AM | 21:309:30 PM | 17:005:00 PM |
| Castle Rock (MDT) | UTC UTC+0 | EST UTC-5 | IST UTC+5:30 | CET UTC+1 |
|---|---|---|---|---|
| 12:0012:00 PM | 18:006:00 PM | 13:001:00 PM | 23:3011:30 PM | 19:007:00 PM |
| 14:002:00 PM | 20:008:00 PM | 15:003:00 PM | 01:301:30 AM+1 day | 21:009:00 PM |
| 16:004:00 PM | 22:0010:00 PM | 17:005:00 PM | 03:303:30 AM+1 day | 23:0011:00 PM |
| 18:006:00 PM | 00:0012:00 AM+1 day | 19:007:00 PM | 05:305:30 AM+1 day | 01:001:00 AM+1 day |
| 20:008:00 PM | 02:002:00 AM+1 day | 21:009:00 PM | 07:307:30 AM+1 day | 03:003:00 AM+1 day |
| 22:0010:00 PM | 04:004:00 AM+1 day | 23:0011:00 PM | 09:309:30 AM+1 day | 05:005:00 AM+1 day |
The difference can change when daylight saving time starts or ends. · All 24 hours in the converter →
Largest cities in United States
The 10 most populous cities of United States and their local time now.
| Location | Time |
|---|---|
| New YorkNew York | |
| Los AngelesCalifornia | |
| ChicagoIllinois | |
| HoustonTexas | |
| PhoenixArizona |
| Location | Time |
|---|---|
| PhiladelphiaPennsylvania | |
| San AntonioTexas | |
| San DiegoCalifornia | |
| DallasTexas | |
| JacksonvilleFlorida |
Castle Rock airport & codes
Phone numbers in Castle Rock, United States use the calling code +1; the ISO country code is US.
- Calling code
- +1
- ISO country code
- US / USA
- Currency
- USD
- Languages
- English, Spanish, Hawaiian, French
Where is Castle Rock?
Castle Rock is in Colorado, United States at 39°22′20″N 104°51′22″W.
- Coordinates
- 39°22′20″N 104°51′22″W · 39.3722, -104.8561
- Map (Google Maps)
- Google Maps ↗
- State / province
- Colorado
- Country
- United States
- Elevation
- 1,897 m
- Population
- 55,591
Frequently asked questions
What time zone does Castle Rock use?
Castle Rock uses Mountain Daylight Time (MDT), with a current offset of UTC-6.
Does Castle Rock observe daylight saving time?
Castle Rock observes daylight saving time. Next clock change: Sunday, November 1, 2026 (UTC-7).
When do clocks change next in Castle Rock?
On Sun, Nov 1, 2026 at 02:00, clocks in Castle Rock go back 1 hour: MDT (UTC−6) ends and MST (UTC−7) begins.
Is Castle Rock on MST or MDT now?
Castle Rock is on MDT (UTC−6) now. In 2026, clocks go forward to MDT (UTC−6) on Mar 8, 2026 and back to MST (UTC−7) on Nov 1, 2026.
What time are sunrise and sunset in Castle Rock today?
On Oct 21, 2026, the sun rises at 07:16 and sets at 18:13 in Castle Rock, giving 10 h 57 min of daylight; solar noon is at 12:45.
What is the calling code for Castle Rock?
Calls to Castle Rock use the international calling code of United States: +1 (ISO code US).