Washington D.C. zone
EDT (GMT-4)
London zone
GMT+1 (GMT+1)
Difference
5 hours ahead of Washington D.C.
Business overlap
3h (9-5 windows)
Working hours overlap
Each cell is one hour in Washington D.C.. Filled cells mark when 9 AM – 5 PM in Washington D.C. and London both apply.
3 hours per day
- Washington D.C.
- GMT-4
- London
- GMT+1
- Difference
- +5h
- Business overlap
- 3h
Hour-by-hour conversion
Each row shows the matching local time in London for an hour in Washington D.C..
| Washington D.C. | London | Day | Window |
|---|---|---|---|
| 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 | Both 9-5 |
| 10:00 AM | 3:00 PM | same day | Both 9-5 |
| 11:00 AM | 4:00 PM | same day | Both 9-5 |
| 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 | next day | — |
| 8:00 PM | 1:00 AM | next day | — |
| 9:00 PM | 2:00 AM | next day | — |
| 10:00 PM | 3:00 AM | next day | — |
| 11:00 PM | 4:00 AM | next day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 12:00 PM in Washington D.C. time. That gives you 3 hours per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Washington D.C. time to London time
Washington D.C. follows the America/New_York time zone (currently EDT, GMT-4), while London follows Europe/London (currently GMT+1, GMT+1). London is 5 hours ahead of Washington D.C. right now.
Both cities observe daylight saving time. If their transition weekends differ, the offset shifts by one hour for a few weeks each spring and autumn.
Daylight saving transitions in 2026
Washington D.C.
- Spring forward · Sunday, March 8, 2026
- Fall back · Sunday, November 1, 2026
London
- Spring forward · Sunday, March 29, 2026
- Fall back · Sunday, October 25, 2026
Reverse this conversion
London to Washington D.C.
Open the converter
Plan a meeting between Washington D.C. and London
More conversions from Washington D.C.
Frequently asked questions
- How many hours is Washington D.C. from London?
- London is 5 hours ahead of Washington D.C. right now.
- What time is 9:00 AM Washington D.C. in London?
- 9:00 AM in Washington D.C. is 2:00 PM in London.
- What time is 5:00 PM Washington D.C. in London?
- 5:00 PM in Washington D.C. is 10:00 PM in London.
- When do Washington D.C. and London business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 3 hours, roughly from 9:00 AM to 12:00 PM in Washington D.C. time.
- Does daylight saving time change the difference between Washington D.C. and London?
- Both Washington D.C. and London observe daylight saving time. If their transition dates differ, the offset between them shifts by an hour for a few weeks each year.
Local time page
Time in Washington D.C.
Local time page
Time in London