Convert Coordinated Universal Time (UTC) to Mountain Time (MST/MDT), with daylight saving applied for the exact date you pick.
Tue, Oct 27
Tue, Oct 27 Same day
| Su | Mo | Tu | We | Th | Fr | Sa |
|---|
UTC 9 to 5 MDT 9 to 5
MDT is 6 hours behind UTC.
Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.
Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.
Shaded rows fall inside working hours in both places.
| Greenwich meridian (UTC) | Denver (MDT) | Working hours |
|---|---|---|
| 12:00 AM | 6:00 PM previous day | |
| 1:00 AM | 7:00 PM previous day | |
| 2:00 AM | 8:00 PM previous day | |
| 3:00 AM | 9:00 PM previous day | |
| 4:00 AM | 10:00 PM previous day | |
| 5:00 AM | 11:00 PM previous day | |
| 6:00 AM | 12:00 AM | |
| 7:00 AM | 1:00 AM | |
| 8:00 AM | 2:00 AM | |
| 9:00 AM | 3:00 AM | |
| 10:00 AM | 4:00 AM | |
| 11:00 AM | 5:00 AM | |
| 12:00 PM | 6:00 AM | |
| 1:00 PM | 7:00 AM | |
| 2:00 PM | 8:00 AM | |
| 3:00 PM | 9:00 AM | Both working |
| 4:00 PM | 10:00 AM | Both working |
| 5:00 PM | 11:00 AM | |
| 6:00 PM | 12:00 PM | |
| 7:00 PM | 1:00 PM | |
| 8:00 PM | 2:00 PM | |
| 9:00 PM | 3:00 PM | |
| 10:00 PM | 4:00 PM | |
| 11:00 PM | 5:00 PM |
Every hour of the Coordinated Universal Time day, plus the common half hours, and their MST equivalents. The second column covers the part of the year when the clocks are on a different gap.
| Coordinated Universal Time | MDT 6 h behind, most of the year (238 days in 2026) | MST 7 h behind, about 18 weeks in 2026 |
|---|---|---|
| 12:00 AM | 6:00 PM (previous day) | 5:00 PM (previous day) |
| 1:00 AM | 7:00 PM (previous day) | 6:00 PM (previous day) |
| 2:00 AM | 8:00 PM (previous day) | 7:00 PM (previous day) |
| 3:00 AM | 9:00 PM (previous day) | 8:00 PM (previous day) |
| 4:00 AM | 10:00 PM (previous day) | 9:00 PM (previous day) |
| 5:00 AM | 11:00 PM (previous day) | 10:00 PM (previous day) |
| 6:00 AM | 12:00 AM | 11:00 PM (previous day) |
| 7:00 AM | 1:00 AM | 12:00 AM |
| 8:00 AM | 2:00 AM | 1:00 AM |
| 9:00 AM | 3:00 AM | 2:00 AM |
| 9:30 AM | 3:30 AM | 2:30 AM |
| 10:00 AM | 4:00 AM | 3:00 AM |
| 10:30 AM | 4:30 AM | 3:30 AM |
| 11:00 AM | 5:00 AM | 4:00 AM |
| 11:30 AM | 5:30 AM | 4:30 AM |
| 12:00 PM | 6:00 AM | 5:00 AM |
| 12:30 PM | 6:30 AM | 5:30 AM |
| 1:00 PM | 7:00 AM | 6:00 AM |
| 1:30 PM | 7:30 AM | 6:30 AM |
| 2:00 PM | 8:00 AM | 7:00 AM |
| 2:30 PM | 8:30 AM | 7:30 AM |
| 3:00 PM | 9:00 AM | 8:00 AM |
| 3:30 PM | 9:30 AM | 8:30 AM |
| 4:00 PM | 10:00 AM | 9:00 AM |
| 4:30 PM | 10:30 AM | 9:30 AM |
| 5:00 PM | 11:00 AM | 10:00 AM |
| 5:30 PM | 11:30 AM | 10:30 AM |
| 6:00 PM | 12:00 PM | 11:00 AM |
| 7:00 PM | 1:00 PM | 12:00 PM |
| 8:00 PM | 2:00 PM | 1:00 PM |
| 9:00 PM | 3:00 PM | 2:00 PM |
| 10:00 PM | 4:00 PM | 3:00 PM |
| 11:00 PM | 5:00 PM | 4:00 PM |
Each row is a stretch of days with one constant difference, split at every clock change.
| Dates | UTC | MST | Difference |
|---|---|---|---|
| Thu, Jan 1, 2026 until Sun, Mar 8, 2026 | UTC | MST | MST 7 h behind |
| Sun, Mar 8, 2026 until Sun, Nov 1, 2026 | UTC | MDT | MDT 6 h behind |
| Sun, Nov 1, 2026 until Sun, Mar 14, 2027 | UTC | MST | MST 7 h behind |
| Sun, Mar 14, 2027 until Sun, Nov 7, 2027 | UTC | MDT | MDT 6 h behind |
| Sun, Nov 7, 2027 until Sat, Jan 1, 2028 | UTC | MST | MST 7 h behind |
Coordinated Universal Time is the reference every time zone is measured from. It never changes for daylight saving time. Servers, aviation, logs and APIs use it because it is unambiguous.
Mountain Time follows the clock in Denver: Mountain Standard Time (MST, UTC−7) in winter and Mountain Daylight Time (MDT, UTC−6) during US daylight saving time.
Most of Arizona stays on MST all year and does not switch to MDT. For Phoenix, pick America/Phoenix in the converter.
MDT is 6 hours behind UTC for most of the year (238 days in 2026). The gap is 7 hours for about 18 weeks in 2026.
Denver uses Mountain Time. MDT is 6 hours behind UTC for most of the year (238 days in 2026). The gap is 7 hours for about 18 weeks in 2026. Type any UTC time into the UTC to MST converter to see the Denver time for any date.
9:00 AM UTC is 3:00 AM MDT for most of the year (238 days in 2026). 9:00 AM UTC is 2:00 AM MST for about 18 weeks in 2026.
12:00 PM UTC is 6:00 AM MDT for most of the year (238 days in 2026). 12:00 PM UTC is 5:00 AM MST for about 18 weeks in 2026.
10:00 AM UTC is 4:00 AM MDT for most of the year (238 days in 2026). 10:00 AM UTC is 3:00 AM MST for about 18 weeks in 2026.
5:00 PM UTC is 11:00 AM MDT for most of the year (238 days in 2026). 5:00 PM UTC is 10:00 AM MST for about 18 weeks in 2026.
No, MST is behind UTC. MDT is 6 hours behind UTC for most of the year (238 days in 2026). The gap is 7 hours for about 18 weeks in 2026.
Working days of 9 AM to 5 PM overlap from 3:00 PM to 5:00 PM UTC, which is 9:00 AM to 11:00 AM MDT while UTC and MDT apply.
Mountain Time changes its clocks twice a year; Coordinated Universal Time does not. The next change is on Sunday, November 1, 2026 in Mountain Time.
Most of Arizona stays on MST all year and does not switch to MDT. For Phoenix, pick America/Phoenix in the converter.