Time difference between London and New York
New York is 5 hours behind London. Both clocks below run live, and the slider moves them together — set it to the hour of your meeting and you will see what time that is on the other side.
The colour of a row is the local time of day: green for working hours, amber for early morning and evening, grey for night. The same thing is written in words next to the city — that is the answer to “can I call now”, without the arithmetic.
Everything is counted in your browser: the time zone rules, including daylight saving, are already there. Nothing is uploaded, nothing is downloaded, and the page keeps working with the network off.
Half-hour zones are shown as they are: India is 5:30 from London, Nepal 5:45. Rounding those to whole hours would be wrong for a billion and a half people — so the difference is written with minutes.
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How to use
- The two clocks show London and New York right now.
- The difference is written next to each, with tomorrow and yesterday marked.
- Move the slider to the hour of your meeting to see it on both sides at once.
The difference is 5 hours — and that is not the whole answer
A gap in hours says nothing about the day. When it is late evening in London, it may already be tomorrow in New York — or still yesterday. That is why every line here carries its own date shift beside the time: the difference alone misleads in exactly the cases people look it up for.
When to call so as not to wake anyone
The working day is marked in green, night in grey. Slide the moment across the day and watch both lines: the overlap where both are green is the window when a call is convenient for everyone. If there is no such window at all, that itself is the answer — write instead.
Frequently asked questions
How many hours is New York from London?
New York is 5 hours behind London. The page counts it for the exact moment shown, so daylight saving on either side is already included.
What time is it in New York when it is noon in London?
Move the slider to twelve o’clock: the line for New York will show it. Tomorrow and yesterday are marked, because the day may differ.
Can I add a third city?
Yes — pick it in the list below the clocks. The choice is remembered in your browser, so next time the same cities will be there.