New York to London Time Converter
Live overlap scrubber for scheduling meetings between New York, United States and London, United Kingdom.
New York vs London Overlap
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New York
EDTThu, Sep 24
•London
GMT+1Thu, Sep 24
•The Time Gap Between New York and London
New York runs at UTC-5 in January and UTC-4 in July, shifting its clocks for Daylight Saving Time.
London runs at UTC+0 in January and UTC+1 in July, shifting its clocks for Daylight Saving Time.
Because the two zones don't shift their clocks on identical dates, the gap between them isn't fixed: it's 5 hours most of the year, but for about 28 days — while one side has changed its clocks and the other hasn't yet — it briefly runs at 4 hours instead. That short window is a common cause of a recurring meeting quietly moving by an hour without anyone changing the invite.
Realistic Overlap for a Standard 9-to-5
Assuming a standard 9am–5pm workday on both ends, New York and London share about 3–4 hours of true overlap. That's enough room for a regular standing meeting without either side needing to take a call before breakfast or after dinner.
- Most of the year: the shared window is 9:00am–12:00pm in New York = 2:00pm–5:00pm in London.
2026 Clock Changes for New York and London
These are the dates in 2026 when the gap between the two cities changes. Around each one, check that recurring invites still land where you expect — calendar apps anchor a meeting to its organizer's time zone, so it's the other side's local time that moves.
- Jan 1 — London is 5 hours ahead of New York.
- Mar 8 — New York springs forward to UTC-4, so London is now 4 hours ahead of New York.
- Mar 29 — London springs forward to UTC+1, so London is now 5 hours ahead of New York.
- Oct 25 — London falls back to UTC+0, so London is now 4 hours ahead of New York.
- Nov 1 — New York falls back to UTC-5, so London is now 5 hours ahead of New York.
Hour-by-Hour: New York to London
New York's day from 7am to 10pm, with the matching time in London. Green is a standard 9-to-5, amber is the early-morning or evening fringe, and grey is when people are usually asleep.
| New York | London |
|---|---|
| 7:00am | 12:00pm (work) |
| 8:00am | 1:00pm (work) |
| 9:00am | 2:00pm (work) |
| 10:00am | 3:00pm (work) |
| 11:00am | 4:00pm (work) |
| 12:00pm | 5:00pm (fringe) |
| 1:00pm | 6:00pm (fringe) |
| 2:00pm | 7:00pm (fringe) |
| 3:00pm | 8:00pm (fringe) |
| 4:00pm | 9:00pm (asleep) |
| 5:00pm | 10:00pm (asleep) |
| 6:00pm | 11:00pm (asleep) |
| 7:00pm | 12:00am +1 day (asleep) |
| 8:00pm | 1:00am +1 day (asleep) |
| 9:00pm | 2:00am +1 day (asleep) |
| 10:00pm | 3:00am +1 day (asleep) |
EST to GMT: What the Abbreviations Mean
EST — Eastern Standard Time (EST, UTC-5) runs part of the year; the rest of the year the same clocks are on Eastern Daylight Time (EDT, UTC-4) instead. People casually say "EST" for both — the scrubber above already resolves whichever one is actually in effect for the date you pick.
GMT — Greenwich Mean Time (GMT, UTC+0) runs part of the year; the rest of the year the same clocks are on British Summer Time (BST, UTC+1) instead. People casually say "GMT" for both — the scrubber above already resolves whichever one is actually in effect for the date you pick.
Timezone abbreviations aren't globally unique — several regions reuse the same three or four letters for unrelated zones. The scrubber is anchored to IANA timezone data (America/New_York and Europe/London) rather than the abbreviation text, so there's no ambiguity in the actual conversion.