| Current: | MDT — Mountain Daylight Time |
|---|---|
| Next Change: | MST — Mountain Standard Time |
| Current Offset: | UTC/GMT -6 hours |
| Difference: | 2 hours behind New York |
2025 Time Zones - Castle Rock
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The graph above illustrates clock changes in Castle Rock during 2025.
Time Changes in Castle Rock Over the Years
Daylight Saving Time (DST) changes do not necessarily occur on the same date every year.
| Year | Date & Time | Abbreviation | Time Change | Offset After |
|---|---|---|---|---|
| 2024 | Sun, Mar 10 at 2:00 am | MST → MDT | +1 hour (DST start) | UTC-6h |
| Sun, Nov 3 at 2:00 am | MDT → MST | -1 hour (DST end) | UTC-7h | |
| 2025 | Sun, Mar 9 at 2:00 am | MST → MDT | +1 hour (DST start) | UTC-6h |
| Sun, Nov 2 at 2:00 am | MDT → MST | -1 hour (DST end) | UTC-7h | |
| 2026 | Sun, Mar 8 at 2:00 am | MST → MDT | +1 hour (DST start) | UTC-6h |
| Sun, Nov 1 at 2:00 am | MDT → MST | -1 hour (DST end) | UTC-7h | |
| 2027 | Sun, Mar 14 at 2:00 am | MST → MDT | +1 hour (DST start) | UTC-6h |
| Sun, Nov 7 at 2:00 am | MDT → MST | -1 hour (DST end) | UTC-7h | |
| 2028 | Sun, Mar 12 at 2:00 am | MST → MDT | +1 hour (DST start) | UTC-6h |
| Sun, Nov 5 at 2:00 am | MDT → MST | -1 hour (DST end) | UTC-7h | |
| * All times are local Castle Rock time. Next time change is highlighted. | ||||
Data for the years before 1970 is not available for Castle Rock, however, we have earlier time zone history for Denver available.
More Information
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Castle Rock
USA
10:35
01
am
Wednesday, September 10, 2025