London is currently 5 hours ahead of New York. Convert time between London and New York, see the exact difference, and find the best hours for calls and meetings.
London uses British Summer Time. New York uses Eastern Daylight Time. London time is 5 hours ahead of New York. So, when it is 12:00 AM in London, it is 7:00 PM in New York.
Common London times and their New York equivalents.
| London Time | New York Time |
|---|---|
| 12:00 AM London | 7:00 PM New York |
| 1:00 AM London | 8:00 PM New York |
| 2:00 AM London | 9:00 PM New York |
| 3:00 AM London | 10:00 PM New York |
| 4:00 AM London | 11:00 PM New York |
| 5:00 AM London | 12:00 AM New York |
| 6:00 AM London | 1:00 AM New York |
| 7:00 AM London | 2:00 AM New York |
| 8:00 AM London | 3:00 AM New York |
| 9:00 AM London | 4:00 AM New York |
| 10:00 AM London | 5:00 AM New York |
| 11:00 AM London | 6:00 AM New York |
| 12:00 PM London | 7:00 AM New York |
| 1:00 PM London | 8:00 AM New York |
| 2:00 PM London | 9:00 AM New York |
| 3:00 PM London | 10:00 AM New York |
| 4:00 PM London | 11:00 AM New York |
| 5:00 PM London | 12:00 PM New York |
| 6:00 PM London | 1:00 PM New York |
| 7:00 PM London | 2:00 PM New York |
| 8:00 PM London | 3:00 PM New York |
| 9:00 PM London | 4:00 PM New York |
| 10:00 PM London | 5:00 PM New York |
| 11:00 PM London | 6:00 PM New York |
London uses Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. The UK clocks go forward one hour on the last Sunday of March and back on the last Sunday of October. GMT takes its name from the Royal Observatory in Greenwich, east London — the historical origin of UTC-based world time.
New York City operates on Eastern Time — Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) in summer. US clocks spring forward on the second Sunday of March and fall back on the first Sunday of November. NYSE and NASDAQ market hours (9:30 AM–4:00 PM ET) make Eastern Time one of the most referenced zones in global finance.
Both London and New York may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | London | New York | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | GMT (UTC+0) | EST (UTC−5) | 5 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | GMT (UTC+0) | EDT (UTC−4) | 4 hours |
| Late Mar – Oct current | Both on summer / daylight time | GMT+1 (UTC+1) | EDT (UTC−4) | 5 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | GMT (UTC+0) | EST (UTC−5) | 5 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
London is currently 5 hours ahead of New York. London uses British Summer Time (UTC+1) and New York uses Eastern Daylight Time (UTC−4).
The best overlap window is 2:00 pm–6:00 pm London time, which corresponds to 9:00 am–1:00 pm New York time. Both cities are within standard business hours (9 am–6 pm) during this window.
When it is 9:00 AM in London, it is 4:00 am in New York. London is 5 hours ahead of New York.
When it is 5:00 PM in New York, it is 10:00 pm in London.
Both London and New York observe Daylight Saving Time, but their transitions may not happen on the same date. During the brief 1–2 week windows in spring and autumn when only one zone has changed clocks, the offset between the two cities shifts by one hour. For most of the year the difference is 5 hours, but double-check the transition dates if you have a recurring meeting scheduled near those windows.