Eastern Standard Time
EST means UTC−05:00 throughout the year. Eastern Time follows regional clock rules and uses UTC−05:00 on your selected date.
Use ET for local civil time →TIME ZONE CONVERTER
Lisbon to EST
Time Converter
Convert Lisbon, Portugal to Eastern Standard Time. Compare dates, seasonal differences and meeting hours.
Lisbon is 5h or 6h ahead of EST in 2026, depending on the date.
9 AM Lisbon = 4 AM EST
Selected date: November 10, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVLisbon to EST conversion table
November 10, 2026 · Date changes are marked.
View the full 24-hour table
| Lisbon | EST |
|---|---|
| 12:00 AM | 7:00 PM -1 day |
| 1:00 AM | 8:00 PM -1 day |
| 2:00 AM | 9:00 PM -1 day |
| 3:00 AM | 10:00 PM -1 day |
| 4:00 AM | 11:00 PM -1 day |
| 5:00 AM | 12:00 AM |
| 6:00 AM | 1:00 AM |
| 7:00 AM | 2:00 AM |
| 8:00 AM | 3:00 AM |
| 9:00 AM | 4:00 AM |
| 10:00 AM | 5:00 AM |
| 11:00 AM | 6:00 AM |
| Lisbon | EST |
|---|---|
| 12:00 PM | 7:00 AM |
| 1:00 PM | 8:00 AM |
| 2:00 PM | 9:00 AM |
| 3:00 PM | 10:00 AM |
| 4:00 PM | 11:00 AM |
| 5:00 PM | 12:00 PM |
| 6:00 PM | 1:00 PM |
| 7:00 PM | 2:00 PM |
| 8:00 PM | 3:00 PM |
| 9:00 PM | 4:00 PM |
| 10:00 PM | 5:00 PM |
| 11:00 PM | 6:00 PM |
Starting with the EST working day
These examples start on 2026-11-10 in EST.
09:00 EST14:00 →Lisbon · 2026-11-10
17:00 EST22:00 →Lisbon · 2026-11-10
Which time-zone meaning are we using?
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 Lisbon to EST throughout 2026
Keeping 09:00 on the Lisbon clock produces 2 different destination clock/date answers in 2026. The ranges below use Lisbon calendar dates, including transition days.
| Dates in Lisbon · 2026 | EST answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Mar 2887 dates | 04:00Same date | UTC → UTC−05:00 | |
| Mar 29 – Oct 24210 dates | 03:00Same date | UTC+01:00 → UTC−05:00 | |
| Oct 25 – Dec 3168 dates | 04:00Same date | UTC → UTC−05:00 |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does Lisbon time become a different date in EST?
Your complete source day: 2026-11-10. Each range shows which destination date to use.
Lisbon · 2026-11-1000:00–05:00UTC
EST · 2026-11-0919:00–24:00UTC−05:00 Previous day
Lisbon · 2026-11-1005:00–24:00UTC
EST · 2026-11-1000:00–19:00UTC−05:00 Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How EST compares with Lisbon throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−5h
−6h
−5h
Lisbon changes its UTC offset in 2026. EST is a fixed offset.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | EST vs Lisbon |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 5h behind |
| 29 Mar 2026, 01:00 UTC | 25 Oct 2026, 01:00 UTC | 6h behind |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 5h behind |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has EST 6h behind relative to Lisbon. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with Lisbon |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 5h behind |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 5h behind |
PLAN BEYOND A SINGLE DAY
Daily CSVLisbon–EST working hours through 2026
Every date calculated with your working windows. 261 selected Lisbon workdays; public holidays are not applied.
Least shared time2h
Most common2h
Most shared time3h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in Lisbon 15:00–16:00.
These starts fit both working windows on every selected Lisbon workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
Lisbon: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. EST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
Lisbon to EST: useful answers
Why is the Lisbon to EST difference sometimes 5 hours and sometimes 6 hours?
Lisbon is 5h or 6h ahead of EST in 2026, depending on the date. Lisbon changes its UTC offset in 2026. EST is a fixed offset.
Is EST the same as local city time?
EST is fixed at UTC−05:00. Lisbon to New York (ET) uses regional rules instead. On 2026-11-10, 09:00 at the source becomes 04:00 at the destination (EST). Choose the local-city option above when that is the clock you mean.
Which cities match EST throughout 2026?
Lima, Peru; Bogota, Colombia; Quito, Ecuador; Kingston, Jamaica keep the same UTC−05:00 offset as fixed EST throughout 2026 under the published rules. Matching an offset does not mean every place uses the abbreviation EST.
Does the Lisbon–EST time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in Lisbon on 2026-11-10 is 04:00 in EST on 2026-11-10. This selected time stays on the same date in both places. Other times can cross midnight.
Can Lisbon and EST meet during working hours?
Your selected working windows share 3h on 2026-11-10. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology