Denver time zone and office-hour overlap
When Denver, London and Los Angeles are all at work.
Denver
London
Los Angeles
- Everyone at work
- Work hours
- Awake
- Night
- Weekend
Tap any column to see that moment in every city.
Different hours for each city
- UTC−7Mountain Standard Time, January
- UTC−6Mountain Daylight Time, July
- America/DenverIANA time zone name
- 1other listed cities on the same clock all year
Clock changes
Denver moves its clocks forward one hour on the second Sunday in March at 2:00 am local time and back on the first Sunday in November at 2:00 am, switching between Mountain Standard Time (UTC−7) and Mountain Daylight Time (UTC−6).
Next change, as of when this page was built (2026-10-20): back on Sun 1 November 2026, from UTC−6 to UTC−7.
Sun and clock
At 105.0° west, the sun is highest over Denver at about 12:00 pm on the winter clock — almost exactly noon, because the clock runs close to the sun.
In mid-January the sun rises at about 7:19 am and sets at about 4:58 pm — 9 hours 45 minutes of daylight.
In mid-July the sun rises at about 5:44 am and sets at about 8:28 pm — 14 hours 45 minutes of daylight.
On a January weekday, 4 of the listed cities share the whole 9-to-5 day with Denver, 80 share at least two hours and 159 share no office time at all; on a July weekday the counts are 12, 90 and 152. The furthest away on the clock in January is Auckland (New Zealand), 20 hours ahead.
Of the 268 cities in this planner, 10 are behind Denver in January, 4 show the same time and 253 are ahead of it.
Cities on the same clock
All year, Denver shows the same time as Salt Lake City.
Only in January (northern winter) it matches Phoenix — they change their clocks on different dates or not at all.
Only in July it matches Mexico City (Mexico), Guadalajara (Mexico), Monterrey (Mexico), Guatemala City (Guatemala), Managua (Nicaragua), Tegucigalpa (Honduras), San Salvador (El Salvador), San José (Costa Rica) and 1 more.
Office hours shared with 12 business cities
Counting a 9-to-5 day, Monday to Friday, in both cities: Denver shares two hours or more with New York, Los Angeles, Chicago, Sydney, Auckland and São Paulo, and no office time at all with Paris, Dubai, Mumbai, Singapore and Tokyo.
| City | Gap, Jan / Jul | Shared, Jan / Jul | At 9 am |
|---|---|---|---|
| New York | +2 / +2 h | 6 / 6 h | 11:00 am |
| Los Angeles | −1 / −1 h | 7 / 7 h | 8:00 am |
| Chicago | +1 / +1 h | 7 / 7 h | 10:00 am |
| London | +7 / +7 h | 1 / 1 h | 4:00 pm |
| Paris | +8 / +8 h | 0 / 0 h | 5:00 pm |
| Dubai | +11 / +10 h | 0 / 0 h | 8:00 pm |
| Mumbai | +12½ / +11½ h | 0 / 0 h | 9:30 pm |
| Singapore | +15 / +14 h | 0 / 0 h | 12:00 am (+1 day) |
| Tokyo | +16 / +15 h | 0 / 0 h | 1:00 am (+1 day) |
| Sydney | +18 / +16 h | 2 / 0 h | 3:00 am (+1 day) |
| Auckland | +20 / +18 h | 4 / 2 h | 5:00 am (+1 day) |
| São Paulo | +4 / +3 h | 4 / 5 h | 1:00 pm |
Time differences with Denver
- London and DenverDenver behind by 7 hours · 1 hour of shared office time
- Los Angeles and DenverDenver ahead by 1 hour · 7 hours of shared office time
City names, coordinates and time zone assignments: GeoNames, licensed under CC BY 4.0 (selection and renaming of some cities by this site). Clock times are computed in your browser from the IANA time zone database. Sources and limits.