London
New York
When it is 12:00 PM (noon) in London, it is 7:00 AM in New York. Both cities observe Daylight Saving Time—London on British Summer Time (BST, UTC+1) and New York on Eastern Daylight Time (EDT, UTC-4)—keeping the time gap at a steady 5 hours throughout summer and standard winter periods.
London & New York Business Hours & Meeting Planner
Coordinating calls between London and New York is one of the world’s busiest financial communication corridors. Because London is currently 5 hours ahead, standard 9:00 AM to 5:00 PM business days overlap during the London afternoon and New York morning (2:00 PM – 5:00 PM London / 9:00 AM – 12:00 PM New York).
4 hours of simultaneous normal office hours (9:00 AM – 5:00 PM) in both cities. Ideal for real-time team meetings and trading synchronization.
Wait until 2:00 PM London time so your colleagues in New York have reached their desks (9:00 AM NY time). Calling before 2:00 PM reaches New York in the early morning.
Call between 9:00 AM and 12:00 PM New York time. Calling after 12:00 PM reaches London after 5:00 PM, when most UK offices are closing.
Today’s London to New York Time Conversion Table
24-hour conversion schedule for today (Saturday, September 12, 2026) between London (BST, UTC+1) and New York (EDT, UTC-4). Each hour is converted using exact IANA timezone rules for today's date, accounting for current daylight saving time.
| London Time (BST) | New York Time (EDT) | Working Status |
|---|---|---|
| 12:00 AM | 7:00 PM (previous day) | Off Hours |
| 1:00 AM | 8:00 PM (previous day) | Off Hours |
| 2:00 AM | 9:00 PM (previous day) | Off Hours |
| 3:00 AM | 10:00 PM (previous day) | Off Hours |
| 4:00 AM | 11:00 PM (previous day) | Off Hours |
| 5:00 AM | 12:00 AM | Off Hours |
| 6:00 AM | 1:00 AM | Off Hours |
| 7:00 AM | 2:00 AM | Off Hours |
| 8:00 AM | 3:00 AM | Off Hours |
| 9:00 AM | 4:00 AM | London Business |
| 10:00 AM | 5:00 AM | London Business |
| 11:00 AM | 6:00 AM | London Business |
| 12:00 PM | 7:00 AM | London Business |
| 1:00 PM | 8:00 AM | London Business |
| 2:00 PM | 9:00 AM | Prime Overlap |
| 3:00 PM | 10:00 AM | Prime Overlap |
| 4:00 PM | 11:00 AM | Prime Overlap |
| 5:00 PM | 12:00 PM | Prime Overlap |
| 6:00 PM | 1:00 PM | New York Business |
| 7:00 PM | 2:00 PM | New York Business |
| 8:00 PM | 3:00 PM | New York Business |
| 9:00 PM | 4:00 PM | New York Business |
| 10:00 PM | 5:00 PM | New York Business |
| 11:00 PM | 6:00 PM | Off Hours |
Understanding the London and New York Time Difference
The time difference between London, England and New York City, United States is 5 hours for approximately 48 weeks of the year. London operates on Greenwich Mean Time (GMT, UTC+0) during the winter and British Summer Time (BST, UTC+1) during the summer. New York operates on Eastern Standard Time (EST, UTC-5) during the winter and Eastern Daylight Time (EDT, UTC-4) during the summer.
Why Does the Time Difference Temporarily Narrow to 4 Hours?
Many international travelers and global businesses are surprised to find that twice each year, the London–New York time difference shrinks from 5 hours to 4 hours. This occurs because the United Kingdom and the United States follow different legal schedules for changing their clocks:
- Spring Discrepancy (March): The United States moves its clocks forward to EDT on the second Sunday of March. However, the United Kingdom does not move clocks forward to BST until the last Sunday of March. During this 2-to-3 week window, New York is on UTC-4 while London is still on UTC+0, narrowing the gap to 4 hours.
- Autumn Discrepancy (October / November): The United Kingdom ends BST and moves clocks back to GMT on the last Sunday of October. The United States does not end EDT until the first Sunday of November. During this roughly 1-week window, London is on UTC+0 while New York remains on UTC-4, again temporarily creating a 4-hour difference.
The live clocks on this page read directly from the IANA time zone database (Europe/London and America/New_York), automatically reflecting the exact current offset regardless of when seasonal transitions take place.
Frequently Asked Questions About London and New York Time
How many hours ahead is London from New York?
London is currently 5 hours ahead of New York. London is on BST (UTC+1) while New York is on EDT (UTC-4). When it is 12:00 PM (noon) in London, it is 7:00 AM in New York.
What is the time difference between London and New York?
The current time difference between London and New York is 5 hours. The time difference is currently 5 hours. It remains 5 hours for approximately 48 weeks of the year, but temporarily narrows to 4 hours twice a year when the UK and US transition daylight saving time on different dates.
Is London ahead of New York?
Yes, London is ahead of New York. Because London is situated in the UK (UTC+1) east of New York (UTC-4) across the Atlantic, the sun rises and business hours start earlier in London.
What time is 9 AM in London in New York?
When it is 9:00 AM in London, it is 4:00 AM in New York. This is because New York is 5 hours behind London. Standard working hours in London begin while New York is still in the early morning.
Does the London–New York time difference change?
Yes. While the time difference is 5 hours for most of the year, it changes to 4 hours twice annually during daylight saving time transition windows because the United Kingdom and the United States do not switch their clocks on the same calendar dates.
When does the London–New York time difference change?
The time difference changes twice each year: In Spring, the US begins Daylight Saving Time (EDT) on the second Sunday of March, while the UK switches to British Summer Time (BST) on the last Sunday of March (a 2-to-3 week window where the difference is 4 hours). In Autumn, the UK ends British Summer Time on the last Sunday of October, while the US ends Daylight Saving Time on the first Sunday of November (a 1-week window where the difference is 4 hours). Throughout the rest of the year, the difference remains 5 hours.
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