Boston to Lisbon Time Difference
🇺🇸 Boston is currently 4 hours ahead of 🇵🇹 Lisbon. This difference varies between 4h and 5h due to Daylight Saving Time.
Live Calculator
Atin 🇺🇸 Boston→it will be—in 🇵🇹 Lisbon
Open full calculator →DST-accurate · shareable link
Difference
+4h
Business overlap
5h
Distance
5,131 km
Approx. flight
6h
Hour-by-Hour: Boston to Lisbon
| 🇺🇸 Boston | 🇵🇹 Lisbon | Note |
|---|---|---|
| 12:00 AM | 4:00 AM | |
| 1:00 AM | 5:00 AM | |
| 2:00 AM | 6:00 AM | |
| 3:00 AM | 7:00 AM | |
| 4:00 AM | 8:00 AM | |
| 5:00 AM | 9:00 AM | |
| 6:00 AM | 10:00 AM | |
| 7:00 AM | 11:00 AM | |
| 8:00 AM | 12:00 PM | |
| 9:00 AM | 1:00 PM | |
| 10:00 AM | 2:00 PM | |
| 11:00 AM | 3:00 PM | |
| 12:00 PM | 4:00 PM | |
| 1:00 PM | 5:00 PM | |
| 2:00 PM | 6:00 PM | |
| 3:00 PM | 7:00 PM | |
| 4:00 PM | 8:00 PM | |
| 5:00 PM | 9:00 PM | |
| 6:00 PM | 10:00 PM | |
| 7:00 PM | 11:00 PM | |
| 8:00 PM | 12:00 AM(next day) | Next day |
| 9:00 PM | 1:00 AM(next day) | Next day |
| 10:00 PM | 2:00 AM(next day) | Next day |
| 11:00 PM | 3:00 AM(next day) | Next day |
Daylight Saving Time (DST)
Both Boston and Lisbon observe Daylight Saving Time, but they may switch on different dates. The time difference varies between 4 hours ahead and 5 hours ahead throughout the year. Currently, Boston is 4 hours ahead relative to Lisbon.
Min difference
4h
Max difference
5h
Best Meeting Times
There are 5 overlapping business hours between Boston and Lisbon (9 AM – 6 PM in each city).
🇺🇸 Boston
9:00 AM – 2:00 PM
🇵🇹 Lisbon
1:00 PM – 6:00 PM
Frequently Asked Questions
What is the time difference between Boston and Lisbon?
The time difference between Boston and Lisbon is currently 4 hours ahead. Boston uses EDT (UTC-4), while Lisbon uses GMT (UTC+0). This difference varies seasonally due to Daylight Saving Time, ranging from 4 hours ahead to 5 hours ahead.
When it's noon in Boston, what time is it in Lisbon?
When it's 12:00 PM (noon) in Boston, it is 4:00 PM in Lisbon. Use our calculator above to convert any other time.
Does the time difference between Boston and Lisbon change?
Yes, the time difference changes throughout the year. Because Boston observes Daylight Saving Time, the offset shifts between 4 hours ahead and 5 hours ahead at different times of the year.
What are the best times to schedule a call between Boston and Lisbon?
The best time to call is between 9:00 AM and 2:00 PM in Boston (which is 1:00 PM – 6:00 PM in Lisbon). This 5-hour window falls within business hours in both cities.
Is Boston ahead or behind Lisbon?
Boston is currently 4 hours behind Lisbon.
What time zone is Boston in?
Boston is in the America/New York time zone, currently using EDT (UTC-4). Boston observes Daylight Saving Time, so the offset changes twice a year.
What time is midnight in Boston in Lisbon?
When it is midnight (12:00 AM) in Boston, it is 4:00 AM in Lisbon.