Offset
The time difference between Eastern Time and Lisbon is 5 hours.
Eastern Time (EDT) is behind Lisbon (BST).
EDT: UTC-4
BST: UTC+1
Both zones are currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–12 PM in Eastern Time (2 PM–5 PM in Lisbon).
Both teams are in working hours during this window on weekdays.
Suggested time: 10:00 AM Eastern Time (3:00 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
Eastern Time is also known as EST, or EDT. To call United States, dial +1.
Lisbon uses Greenwich Mean Time (GMT, or BST). To call Portugal, dial +351.
Lisbon is approximately 3,350 miles east of Eastern Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| EST | Lisbon | Day |
|---|---|---|
| 12:00 am | 5:00 am | Same day |
| 1:00 am | 6:00 am | Same day |
| 2:00 am | 7:00 am | Same day |
| 3:00 am | 8:00 am | Same day |
| 4:00 am | 9:00 am | Same day |
| 5:00 am | 10:00 am | Same day |
| 6:00 am | 11:00 am | Same day |
| 7:00 am | 12:00 pm | Same day |
| 8:00 am | 1:00 pm | Same day |
| 9:00 am | 2:00 pm | Same day |
| 10:00 am | 3:00 pm | Same day |
| 11:00 am | 4:00 pm | Same day |
| 12:00 pm | 5:00 pm | Same day |
| 1:00 pm | 6:00 pm | Same day |
| 2:00 pm | 7:00 pm | Same day |
| 3:00 pm | 8:00 pm | Same day |
| 4:00 pm | 9:00 pm | Same day |
| 5:00 pm | 10:00 pm | Same day |
| 6:00 pm | 11:00 pm | Same day |
| 7:00 pm | 12:00 am | +1 day |
| 8:00 pm | 1:00 am | +1 day |
| 9:00 pm | 2:00 am | +1 day |
| 10:00 pm | 3:00 am | +1 day |
| 11:00 pm | 4:00 am | +1 day |
Daylight saving time
Both zones observe daylight saving time, but they transition on different dates.
Eastern 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 Eastern 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
- 5:25 AM
- Sunset
- 8:27 PM
- Day length
- 15h 2m
- Sunrise
- 6:12 AM
- Sunset
- 9:01 PM
- Day length
- 14h 49m
Daylight overlap: 10h 36m — 5:25 AM–4:01 PM in Eastern Time (10:25 AM–9:01 PM in Lisbon). Both locations are in daylight during this window.
Cities in these zones
Cities in Eastern Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Eastern Time
- EWR
- HPN
- JFK
- LGA
- TEB
- ILG
- PHL
- TTN
- CLT
- USA
Airports in Greenwich Mean Time
- CAT
- LIS
Related conversions
Common conversions
- What is 9:00 am EST in Lisbon?
- 9:00 am EST is 2:00 pm Lisbon.
- What is 12:00 pm EST in Lisbon?
- 12:00 pm EST is 5:00 pm Lisbon.
- What is 12:30 pm EST in Lisbon?
- 12:30 pm EST is 5:30 pm Lisbon.
- What is 2:00 pm EST in Lisbon?
- 2:00 pm EST is 7:00 pm Lisbon.
- What is 5:00 pm EST in Lisbon?
- 5:00 pm EST is 10:00 pm Lisbon.
- What is 11:30 pm EST in Lisbon?
- 11:30 pm EST is 4:30 am Lisbon, the next day.