What is the time difference between London and New York?

London is normally 5 hours ahead of New York. For a couple of weeks each spring and autumn the gap is 4 hours, because the two regions change their clocks on different weekends. Pick the exact date above to see which applies.

Can the difference between two cities change during the year?

Yes. Any pair where at least one side observes daylight saving will shift by an hour twice a year. Pairs where neither side changes clocks stay constant.

Why are some differences not a whole number of hours?

Several zones sit on 30 or 45 minute offsets, including India, parts of Australia and Nepal, so the difference can include minutes.

Can I check a future date?

Yes. The calculator works for any date you choose using your browser's time zone rules.

Time Difference Calculator

Choose two cities and a date to see how many hours separate them.

First locationSecond locationDate

London is 5 hours ahead of New York.

This gap stays the same all year.

London

12:00 PM

TUESDAY, OCTOBER 6, 2026

UTC+1 · Europe/London · daylight saving observed

New York

07:00 AM

TUESDAY, OCTOBER 6, 2026

UTC-4 · America/New_York · daylight saving observed

Reading a time difference correctly

"Ahead" means the clock there has already passed the time on your clock. If a city is 5 hours ahead, 9:00 in the morning for you is 14:00 for them — and a 17:00 meeting for you lands at 22:00 for them, which is usually too late.

Because daylight saving start dates differ by country, the difference between two places is not a constant. Check the exact date of your meeting rather than reusing a number you remember from last season.

Frequently asked questions

What is the time difference between London and New York?: London is normally 5 hours ahead of New York. For a couple of weeks each spring and autumn the gap is 4 hours, because the two regions change their clocks on different weekends. Pick the exact date above to see which applies.
Can the difference between two cities change during the year?: Yes. Any pair where at least one side observes daylight saving will shift by an hour twice a year. Pairs where neither side changes clocks stay constant.
Why are some differences not a whole number of hours?: Several zones sit on 30 or 45 minute offsets, including India, parts of Australia and Nepal, so the difference can include minutes.
Can I check a future date?: Yes. The calculator works for any date you choose using your browser's time zone rules.