New York to London Time Difference

New York to London Time Difference — Live Calculator & Conversion Table

–

Live — updates every second

–

––:––:––

–

––:––:––

–

Location 1 UTC offset –

Location 2 UTC offset –

📅 Date Future date

Time Difference Table

Location 1	Location 2

London (GMT/BST) is 5 hours ahead of New York (EST/EDT) almost all year. Both cities observe Daylight Saving Time, and since both shift together, the gap stays at 5h in winter and 5h in summer. The only exception is a ~3-week window in mid-March (when the US springs forward before the UK) and ~1 week in late October (when the UK falls back before the US), during which the gap is temporarily 4 hours.

London is ahead by

+5h

Almost all year

Transition gap

+4h

Mid-Mar & late Oct only

New York timezone

EST / EDT

UTC−5 / UTC−4

London timezone

GMT / BST

UTC+0 / UTC+1

Best Times to Schedule a Meeting

With a consistent 5h gap, the best window is 09:00–12:00 New York time (14:00–17:00 London) — London afternoon aligns with New York morning.

New York time	London time	Season	Suitability
09:00 – 12:00	14:00–17:00	All year	Best window
12:00 – 14:00	17:00–19:00	All year	OK

Time Difference by Month

Highlighted months indicate when a DST transition changes the difference.

Jan

Feb

Mar

4–5h

Apr

May

Jun

Jul

Aug

Sep

Oct

4–5h

Nov

Dec

Daylight Saving Time Schedule

Both cities observe DST but on different dates each year. The US switches the second Sunday of March; the UK switches the last Sunday of March. This creates the transition windows.

Event	New York	London	Effect
US springs forward	Second Sunday of March, 02:00	Last Sunday of March, 01:00	~3 weeks at 4h
UK falls back	First Sunday of November, 02:00	Last Sunday of October, 02:00	~1 week at 4h

Frequently Asked Questions

How many hours ahead is London compared to New York?

London is 5 hours ahead of New York almost all year. The gap is temporarily 4 hours for about 3 weeks in mid-March and about 1 week in late October, when the two countries switch their clocks on different dates.

What time is it in London when it is noon in New York?

When it is 12:00 noon in New York (EST, winter), it is 17:00 in London. In summer (EDT), noon in New York = 17:00 in London (BST). The answer is 17:00 almost all year because both cities observe DST together.

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

The best window is 09:00–12:00 New York time (14:00–17:00 London). Calling before 09:00 NY means London is already past 14:00, and by NY evening London is closed for business.

Is New York always 5 hours behind London?

Almost always. The only exceptions are ~3 weeks in mid-March and ~1 week in late October, when the gap is temporarily 4 hours due to the US and UK switching clocks on different dates.

When does the New York to London time difference change?

Twice a year: when the US springs forward in mid-March (5h→4h temporarily until the UK catches up), and when the UK falls back in late October (4h temporarily until the US follows in early November).

Related Time Differences

Explore other popular city pairs: