London to New YorkTime Converter

London to New York: the time difference

On 2026-10-05 at 9:00 AM in London, it is 4:00 AM in New York (Monday, October 5, 2026). New York is 5 hours behind of London.

London is often described as being on GMT, but it uses British Summer Time during part of the year. Choosing Europe/London keeps both seasons attached to the same calendar event. New York is a useful anchor for US East Coast business hours. Its clock changes do not line up with London’s, so recurring transatlantic calls can shift for a few weeks each year.

24-hour conversion table

Source date: 2026-10-05 in London. Each row is a real instant; the destination date is shown explicitly. Repeated hours appear twice and nonexistent hours are labeled.

Does the time difference change during 2026?

Yes. The daily reference calculation finds 4 and 5-hour differences across the year. A repeating meeting tied to one city's clock can move on the other city's calendar.

Ranges sample each date at 12:00 UTC. A transition can occur partway through the first or last date. Use the converter for the precise instant. Calculated from this build’s Intl time-zone rules; future legislation may change them.

London: The 2026 reference data includes UTC+00:00 and UTC+01:00. Select the actual meeting date: one fixed offset will not describe the whole year.

New York: The 2026 reference data includes UTC−05:00 and UTC−04:00. Select the actual meeting date: one fixed offset will not describe the whole year.

Best time to call New York from London

For a one-hour call on 2026-10-05, these example start times fit a 9 AM–6 PM workday in both cities. A shared workday is not a guarantee that a person is free.

Customize working hours for London and New York.

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