Current Time in London

Time zone facts for London

• IANA time zone: Europe/London
• Standard offset: UTC±0
• Daylight saving: observed — the offset moves to UTC+1 while DST is active (the live clock above already reflects today's status).
• January / July offset: UTC±0 / UTC+1
• Offset as of September 2026: UTC+1 — daylight saving in effect
• Next clock change: clocks go back 1 hour on Sunday, October 25, 2026 (local date), moving the offset from UTC+1 to UTC±0

How London's offset moves through the year

London keeps two offsets: UTC±0 in January and UTC+1 in July. The clocks move between them twice a year, and each move changes the difference between London and every place that does not move at the same instant. As of September 2026, the offset is UTC+1, so daylight saving is in effect.

The coming cycle, derived from the IANA time zone database as of September 2026: the clocks next go back 1 hour on Sunday, October 25, 2026 (London local date), taking the offset from UTC+1 to UTC±0. The change after that comes 154 days later, on Sunday, March 28, 2027, when the clocks go forward 1 hour and the offset returns from UTC±0 to UTC+1. Those 154 days are the standard-time part of the year for London.

Read those two dates alongside the partner's dates for any city you work with. If the partner does not observe daylight saving, the gap to it changes on exactly these two dates. If it does, the gap changes only where the two calendars disagree — not at all when both sides switch at the same instants, otherwise on every date where one side has shifted and the other has not yet. The table below works that out for the reference cities.

Set against the reference cities, as of September 2026: London's next change comes 7 days before New York's (Sunday, November 1, 2026, New York date). Tokyo has no change of its own scheduled within the next 15 months, so its gap to London moves on London's dates alone. Which city moves first is what shapes each of the mismatch windows set out below.

The gap to New York and Tokyo across the year

The differences below were computed at build time by scanning the coming twelve months of the IANA time zone database for each pair, locating every instant at which either city changes its clocks, and reading the gap on each side of it. "As of September 2026" is the gap today; "over the year" is the full range the pair takes before the same month comes round again, from London's point of view.

London's difference from each reference city, as of September 2026. Derived from the IANA time zone database at build time.

Reference	London is, as of September 2026	Over the coming year	Why
New York	5 hours ahead	4 hours ahead to 5 hours ahead	both change clocks, on different dates
Tokyo	8 hours behind	8 hours behind to 9 hours behind	only London changes its clocks

Neither gap holds still for the whole year. The mechanism in each case is set out below, with the exact instants at which the gap moves.

London and New York

As of September 2026, London is 5 hours ahead of New York. Both London and New York change their clocks, but not at the same instants. Between one side's transition and the other's, only one shift has happened, so the gap briefly holds a value it holds only inside these mismatch windows. The gap changes 4 times in the coming twelve months; the briefest such window lasts 7 days, from October 25, 2026 to November 1, 2026 (London dates), during which London is 4 hours ahead of New York.

• From Sunday, October 25, 2026 at 1:00 AM (London time), when London changes clocks: London is 4 hours ahead of New York.
• From Sunday, November 1, 2026 at 6:00 AM (London time), when New York changes clocks: London is 5 hours ahead of New York.
• From Sunday, March 14, 2027 at 7:00 AM (London time), when New York changes clocks: London is 4 hours ahead of New York.
• From Sunday, March 28, 2027 at 2:00 AM (London time), when London changes clocks: London is 5 hours ahead of New York.

Each of those windows is opened by one city's change and closed by the other's. The first, from October 25, 2026 to November 1, 2026 (London dates), opens when London's clocks go back and closes 7 days later when New York's go back. In between, New York is on daylight time and London on standard time, so London is 4 hours ahead of New York against 5 hours ahead on either side of it. The second, from March 14, 2027 to March 28, 2027 (London dates), opens when New York's clocks go forward and closes 14 days later when London's go forward. In between, New York is on daylight time and London on standard time, so London is 4 hours ahead of New York against 5 hours ahead on either side of it. Which city moves first differs from window to window, and the longest of them lasts 14 days.

London and Tokyo

As of September 2026, London is 8 hours behind Tokyo. London changes its clocks for daylight saving and Tokyo does not. Each London transition therefore moves the gap by the full size of that shift, and nothing ever moves it back except the next London transition. The gap changes twice in the coming twelve months, always on London's dates — Tokyo's calendar plays no part.

• From Sunday, October 25, 2026 at 1:00 AM (London time), when London changes clocks: London is 9 hours behind Tokyo.
• From Sunday, March 28, 2027 at 2:00 AM (London time), when London changes clocks: London is 8 hours behind Tokyo.

Ranked by how many of the 365 scanned days each gap spends at its most common value, from London's point of view: New York 344 (5 hours ahead) and Tokyo 211 (8 hours behind). The two kinds of movement are not alike. The gap to New York changes 4 times in the year yet is away from its usual value for only 21 days in total, because each departure ends as soon as the other city catches up. The gap to Tokyo changes only twice, but each change stands until the next one, so it spends 154 days away from its most common value.

Working hours that overlap

Assume a 9:00 AM to 5:00 PM working day in London and the same in each reference city. The overlap is then a plain consequence of the gap, and it changes whenever the gap does — so where a pair takes more than one gap during the year, both readings are given. As of September 2026:

• New York: 3 hours — 2:00 PM to 5:00 PM in London, which is 9:00 AM to 12:00 PM in New York. When London is 4 hours ahead of New York — the rest of the year — the overlap is 4 hours — 1:00 PM to 5:00 PM in London, which is 9:00 AM to 1:00 PM in New York.
• Tokyo: none at any gap the pair takes during the year — a 9:00 AM to 5:00 PM day in London never meets a 9:00 AM to 5:00 PM day in Tokyo.

The 9-to-5 window is a convention, not a fact about anyone's hours. The Meeting Planner takes each participant's actual working hours and evaluates the overlap for the specific date, so a slot chosen in one season is still checked against the other side's clock in the next.

London time — frequently asked questions

Business-hours overlap

When it is 9:00 AM in London (as of September 2026), it is 4:00 AM in New York and 5:00 PM in Tokyo. These readings shift when any of the cities changes its clocks — the Meeting Planner computes the overlap for your exact date.

Zone-to-zone converter pages for London

GMT — Greenwich Mean Time. London is the anchor city for GMT on this site; the same zone is written BST (British Summer Time) while daylight saving is active, and in everyday use "GMT" means London's time, whichever of GMT/BST is in force. The same letters also mean: UTC±0 kept year-round, which London does not do. Each converter page states which meaning it uses.

• IST to GMT — India and the United Kingdom.
• GMT to EST — London and New York.
• GMT to PST — London and the US West Coast.
• CET to GMT — Central Europe and the United Kingdom.
• SGT to GMT — Singapore and London.

Of the 5 corridors anchored on GMT, as of September 2026: 2 lead to a zone that keeps one offset all year (IST and SGT), so those gaps move only on London's own dates; 1 leads to a zone that switches at the same instants as London (CET), so the gap never moves; 2 lead to a zone that switches on different dates (EST and PST), opening mismatch windows of up to 14 days.

Convert a time for London

Planning a call or a deadline? Use the Time Zone Converter to translate any date and time to or from London — DST-correct for that exact date — or line up working hours side by side in the Meeting Planner. For the corridors people search for by abbreviation — IST to EST, IST to PST, IST to GMT and the rest — the zone-to-zone converter pages explain, pair by pair, whether the gap moves during the year and when.

Time in other major cities

Every city links to its own page like this one. For a dedicated full-page world clock, visit our sibling site, wrldclock.com.

All times are computed locally in your browser from its IANA time zone data and your device's clock — checked against our own server with an anonymous timestamp request where possible. Nothing you enter is transmitted. See the methodology page.