London vs New York Time Difference

New York, USA is 5 hours behind London, UK. When it is 9:00 AM in London, it is 4:00 AM in New York. The two cities have approximately 3 hours of business hours overlap for scheduling meetings.

Also searched as: time difference between NYC and the UK, NY vs London, time in New York vs London, London to New York time, UK to NY time difference, and New York to England time difference. New York City (NYC) and London, England share roughly 3 hours of business overlap each weekday — making transatlantic meetings easier than most.

What is the best time to call New York from London?

The best time to call New York from London is during the 3-hour business hours overlap window when both cities are within 9 AM - 5 PM local time.

When do business hours overlap between London and New York?

London and New York have approximately 3 hours of overlapping business hours per day (based on 9 AM - 5 PM in both cities).

Business Context

Both London and New York are major financial centers. Traders, bankers, and financial analysts frequently coordinate across these markets, with the overlap period being particularly active for cross-market transactions.

Business hours overlap for approximately 3 hours per day between London and New York.

Calling New York from London

From London, schedule calls to New York in your late afternoon. Your 4-6 PM is their mid-morning when they're most productive.

Best Call Window: 4:00 PM - 6:00 PM London time (11:00 AM - 13:00 AM in New York)

Working with New York-Based Teams

When managing projects with New York from London, designate overlap hours for synchronous work (meetings, pair programming) and use the non-overlap time for focused individual work.

Meeting Planning Tips

The 5-hour gap requires some flexibility. Late afternoon calls in London often work best.

New York to London Time — Full Conversion Table

London is 5 hours ahead of New York (4 hours during the brief DST transition windows in March and November). The table below maps every hour of the New York day to its London equivalent — useful whether you're scheduling a meeting or asking "what time is 4pm New York in London?"

London to New York Time (Reverse Direction)

Going the other way: New York is 5 hours behind London. If you're in the UK trying to figure out what time it is in NYC — for example, "4 PM UK is what time in New York?" — use this reverse table:

UK ↔ NYC Time Conversion

If you're using shorthand like "NYC" and "UK" instead of the full city names, the math is identical: NYC (New York City, Eastern Time) is 5 hours behind the UK (London, GMT or BST). NYC switches to and from Daylight Saving Time roughly two weeks before the UK does, which creates short windows each March and November where the difference temporarily becomes 4 hours instead of 5.

Common UK-to-NYC questions answered: 4 PM UK = 11 AM NYC, 2 PM UK = 9 AM NYC, 5 PM UK = 12 PM NYC, 9 PM UK = 4 PM NYC. For NYC-to-UK: 9 AM NYC = 2 PM UK, 11 AM NYC = 4 PM UK, 12 PM NYC = 5 PM UK, 5 PM NYC = 10 PM UK.

NYSE and LSE Market Overlap

The New York Stock Exchange (NYSE) opens at 9:30 AM ET (2:30 PM London time) and the London Stock Exchange (LSE) closes at 4:30 PM GMT (11:30 AM ET). This gives traders a 2-hour overlap window from 9:30 AM–11:30 AM ET (2:30 PM–4:30 PM London) when both exchanges are active — the busiest period for transatlantic equities and forex trading.

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