New York to London time
Convert New York time to London (UK) time instantly, with daylight saving applied automatically for whatever date you pick.
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How many hours ahead is London?
London runs 5 hours ahead of New York almost all year. 9 AM in New York is 2 PM in London, and the other way round, noon in London is 7 AM in New York. Because both cities keep daylight saving time (New York shifts EST↔EDT, London GMT↔BST), the 5-hour gap stays steady year-round, unlike pairs involving a no-DST Asian city, where only one side ever moves.
The brief windows when it drops to 4 hours
The US springs forward on the second Sunday of March; the UK waits until the last Sunday of March. In 2026 that leaves March 8-29, when New York alone is on summer time (EDT) and the gap narrows to just 4 hours. It happens again each autumn: Britain falls back on 25 October, the US on 1 November, so for that one week it's 4 hours once more. A southern-hemisphere city would flip the direction entirely, since its DST falls in the opposite season, but New York and London are both in the northern hemisphere, so there's no such reversal here.
For calls, meetings, flights and live broadcasts
New York's 9 AM start is 2 PM in London, so 9 AM to noon Eastern (2-5 PM London) is your best shared window before the London office clocks off. Nonstop flights from JFK or Newark to Heathrow take about 7 hours, so an evening departure lands in the London morning. A 3 PM London Premier League kickoff is 10 AM in New York, and Wimbledon or any live-stream schedule converts on the same 5-hour rule.
Frequently asked questions
If it's 9 AM in New York, what time is it in London?
For most of the year the two cities' summer-time periods line up, so it's 2 PM in London (a 5-hour difference). During a changeover stretch such as mid-March, when only New York is on summer time, it's 1 PM in London (4 hours). The converter above works this out automatically for the date you choose.
Is London always exactly 5 hours ahead of New York?
Nearly always, but not quite. Because the two countries start and end daylight saving about three weeks apart, the gap dips to 4 hours during the spring and autumn transition windows. That's why the exact difference on a given day depends on the calendar, which the converter handles date by date.
Does this converter handle daylight saving on its own?
Yes. It checks whether New York (EST/EDT) and London (GMT/BST) are each on summer time for your chosen date and applies that day's real gap, 5 hours or 4, so you never have to work out the DST boundary weeks by hand.