Offset
The time difference between Mountain Time and Lisbon is 7 hours.
Mountain Time (MDT) is behind Lisbon (BST).
MDT: UTC-6
BST: UTC+1
Both zones are currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–10 AM in Mountain Time (4 PM–5 PM in Lisbon).
Both teams are in working hours during this window on weekdays.
Suggested time: 9:00 AM Mountain Time (4:00 PM Lisbon).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
Portugal
- New Year's DayThu, Jan 1
- CarnivalTue, Feb 17
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- Freedom DaySat, Apr 25
- Labour DayFri, May 1
- Corpus ChristiThu, Jun 4
- National DayWed, Jun 10
- Assumption DaySat, Aug 15
- Republic DayMon, Oct 5
- All Saints DaySun, Nov 1
- Restoration of IndependenceTue, Dec 1
- Immaculate ConceptionTue, Dec 8
- Christmas DayFri, Dec 25
About these zones
Mountain Time is also known as MST, or MDT. To call United States, dial +1.
Lisbon uses Greenwich Mean Time (GMT, or BST). To call Portugal, dial +351.
Lisbon is approximately 4,850 miles northeast of Mountain Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| MST | Lisbon | Day |
|---|---|---|
| 12:00 am | 7:00 am | Same day |
| 1:00 am | 8:00 am | Same day |
| 2:00 am | 9:00 am | Same day |
| 3:00 am | 10:00 am | Same day |
| 4:00 am | 11:00 am | Same day |
| 5:00 am | 12:00 pm | Same day |
| 6:00 am | 1:00 pm | Same day |
| 7:00 am | 2:00 pm | Same day |
| 8:00 am | 3:00 pm | Same day |
| 9:00 am | 4:00 pm | Same day |
| 10:00 am | 5:00 pm | Same day |
| 11:00 am | 6:00 pm | Same day |
| 12:00 pm | 7:00 pm | Same day |
| 1:00 pm | 8:00 pm | Same day |
| 2:00 pm | 9:00 pm | Same day |
| 3:00 pm | 10:00 pm | Same day |
| 4:00 pm | 11:00 pm | Same day |
| 5:00 pm | 12:00 am | +1 day |
| 6:00 pm | 1:00 am | +1 day |
| 7:00 pm | 2:00 am | +1 day |
| 8:00 pm | 3:00 am | +1 day |
| 9:00 pm | 4:00 am | +1 day |
| 10:00 pm | 5:00 am | +1 day |
| 11:00 pm | 6:00 am | +1 day |
Daylight saving time
Both zones observe daylight saving time, but they transition on different dates.
Mountain Time: next transition on Sunday, November 1, 2026.
Lisbon: next transition on Sunday, October 25, 2026.
For approximately 7 days between transitions, the offset between Mountain Time and Lisbon differs from its typical value. Recurring meetings during this window will shift by one hour.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:33 AM
- Sunset
- 8:28 PM
- Day length
- 14h 56m
- Sunrise
- 6:12 AM
- Sunset
- 9:01 PM
- Day length
- 14h 49m
Daylight overlap: 8h 29m — 5:33 AM–2:01 PM in Mountain Time (12:33 PM–9:01 PM in Lisbon). Both locations are in daylight during this window.
Cities in these zones
Cities in Mountain Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Airports in Greenwich Mean Time
- CAT
- LIS
Related conversions
Common conversions
- What is 9:00 am MST in Lisbon?
- 9:00 am MST is 4:00 pm Lisbon.
- What is 12:00 pm MST in Lisbon?
- 12:00 pm MST is 7:00 pm Lisbon.
- What is 12:30 pm MST in Lisbon?
- 12:30 pm MST is 7:30 pm Lisbon.
- What is 2:00 pm MST in Lisbon?
- 2:00 pm MST is 9:00 pm Lisbon.
- What is 5:00 pm MST in Lisbon?
- 5:00 pm MST is 12:00 am Lisbon, the next day.
- What is 11:30 pm MST in Lisbon?
- 11:30 pm MST is 6:30 am Lisbon, the next day.