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Best Meeting Times Between New York and London
New York (ET) is 5 hours behind London for most of the year — briefly 4 hours during the spring and autumn clock-change transition weeks. This is one of the most workable transatlantic gaps: enough genuine overlap to run daily standups, weekly reviews, and ad-hoc calls within normal business hours for both sides.
The standard overlap window
On a 9 AM–5 PM schedule for both cities, the overlap runs from 9 AM to 12 PM New York / 2 PM to 5 PM London — roughly 3 hours. Most US–UK teams fix a standing slot at 10 AM ET / 3 PM GMT and protect it. It lands comfortably mid-morning for New York and mid-afternoon for London, avoiding the early-morning stretch that some transatlantic pairs require.
The spring and autumn clock-change weeks
The US and UK do not change clocks on the same date. In spring, the US moves clocks forward 2–3 weeks before the UK does. During that window, the gap is 4 hours instead of 5. In autumn, the UK returns to GMT before the US reverts to EST, again producing a brief 4-hour gap. If you have a recurring meeting near those dates, recheck the actual times with this tool rather than relying on habit.
Extending the window
If either side is willing to flex by one hour, the shared window grows to 4 hours. A London team starting calls at 8 AM pairs well with 3 AM–12 PM New York — but a more practical version is London taking a 9 AM call at exactly the start of their day, giving New York from 4 AM onward. More commonly, New York extends to 6 PM one or two days per week, picking up an extra hour with London's late afternoon. Negotiating one flex day per week is a common and fair compromise.
What is the best time for a New York to London meeting?
10 AM–12 PM Eastern / 3–5 PM London is the most reliable window. It sits comfortably within both teams' normal working hours. Many US–UK companies use 10 AM ET / 3 PM GMT as their permanent weekly call slot.
How many hours ahead is London compared to New York?
London is 5 hours ahead of New York for most of the year. The gap briefly narrows to 4 hours during the spring and autumn clock-change transition weeks, when the US and UK move their clocks on different dates. This tool always uses the current live offset.
Does the UK observe daylight saving time?
Yes. The UK observes British Summer Time (BST, UTC+1) from the last Sunday of March to the last Sunday of October. The US moves its clocks 2–3 weeks earlier in spring and about a week later in autumn, which creates brief windows each year when the gap is 4 hours instead of 5.
What time zone should I specify when booking a call with London?
Always write both zones explicitly — for example, "10 AM ET / 3 PM GMT". Never write just "10 AM". During the transition weeks, the offset may have shifted and the recipient will assume their own current local time. UTC in calendar invites is the safest convention for international recurring meetings.
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