timedatelive
Browse 500 cities
CitiesWorld ClockVisasGet PaidGuidesHolidaysToolsAnswers

London time differences

Published 2026-08-04 · last checked 2026-08-04 · written and calculated in-house by timedatelive

London is on UTC+0 in winter and UTC+1 in summer, which is why it is the reference point most people reach for and also why London gaps get quoted wrongly so often. 22 of these 33 pairings need two answers rather than one.

The short answer

London is on UTC+0 in winter and UTC+1 in summer, which is why it is the reference point most people reach for and also why London gaps get quoted wrongly so often. 22 of these 33 pairings need two answers rather than one.

The 11 that do not are the ones where the other city changes its clocks at the same time of year as London does — the European cities, plus New York, Toronto, Cairo and Tel Aviv. Those gaps hold steady because both ends move together. The clearest example of the other kind: London and Singapore are 7 hours apart from 29 March to 24 October 2026 and 8 hours apart either side of that, because London moves and Singapore does not.

PairGap on 4 August 2026Gap on 14 January 2026Shared working hours
Amsterdam to London1 hour ahead1 hour ahead7 hours
Auckland to London11 hours ahead13 hours aheadnone
Bengaluru to London4h 30m ahead5h 30m ahead3.5 hours
Bangkok to London6 hours ahead7 hours ahead2 hours
Barcelona to London1 hour ahead1 hour ahead7 hours
Berlin to London1 hour ahead1 hour ahead7 hours
Buenos Aires to London4 hours behind3 hours behind4 hours
Cairo to London2 hours ahead2 hours ahead6 hours
Cape Town to London1 hour ahead2 hours ahead7 hours
Chiang Mai to London6 hours ahead7 hours ahead2 hours
Dubai to London3 hours ahead4 hours ahead5 hours
Ho Chi Minh City to London6 hours ahead7 hours ahead2 hours
Hong Kong (Central) to London7 hours ahead8 hours ahead1 hour
Istanbul to London2 hours ahead3 hours ahead6 hours
Jakarta to London6 hours ahead7 hours ahead2 hours
Kuala Lumpur to London7 hours ahead8 hours ahead1 hour
Lisbon to Londonsame timesame time8 hours
London to Madrid1 hour behind1 hour behind7 hours
London to Manila7 hours behind8 hours behind1 hour
London to Melbourne9 hours behind11 hours behindnone
London to Mexico City7 hours ahead6 hours ahead1 hour
London to Mumbai4h 30m behind5h 30m behind3.5 hours
London to Nairobi2 hours behind3 hours behind6 hours
London to New York5 hours ahead5 hours ahead3 hours
London to Paris1 hour behind1 hour behind7 hours
London to Rome1 hour behind1 hour behind7 hours
London to São Paulo4 hours ahead3 hours ahead4 hours
London to Seoul8 hours behind9 hours behindnone
London to Singapore (CBD)7 hours behind8 hours behind1 hour
London to Sydney9 hours behind11 hours behindnone
London to Tel Aviv2 hours behind2 hours behind6 hours
London to Tokyo8 hours behind9 hours behindnone
London to Toronto5 hours ahead5 hours ahead3 hours

All 33 pairings in this group, both directions available. Gaps as at 4 August 2026 and 14 January 2026.

How this page was built. Offsets come from the IANA time zone database, read through Python's zoneinfo, for two reference instants: midday on 14 January 2026 and midday on 4 August 2026. Two instants are needed because 15 of the 34 cities move their clocks and 19 do not, so a single figure would be wrong for half the year. Gaps are the difference between the two cities' UTC offsets at the same instant. Shared working hours are the overlap of 09:00–17:00 local time in both cities on the same calendar day. Nothing here is estimated or rounded: every figure is recomputed from the tz database each time this page is rebuilt, and the date it was last checked is printed at the top. Full methodology.
The same pairs read the other way 33 pages

Each pairing has a page from each side. The table above links one direction; these link the other.

London to AmsterdamLondon to AucklandLondon to BengaluruLondon to BangkokLondon to BarcelonaLondon to BerlinLondon to Buenos AiresLondon to CairoLondon to Cape TownLondon to Chiang MaiLondon to DubaiLondon to Ho Chi Minh CityLondon to Hong Kong (Central)London to IstanbulLondon to JakartaLondon to Kuala LumpurLondon to LisbonMadrid to LondonManila to LondonMelbourne to LondonMexico City to LondonMumbai to LondonNairobi to LondonNew York to LondonParis to LondonRome to LondonSão Paulo to LondonSeoul to LondonSingapore (CBD) to LondonSydney to LondonTel Aviv to LondonTokyo to LondonToronto to London

Common follow-up questions

Is London always GMT?

No. London is on GMT (UTC+0) from the last Sunday in October to the last Sunday in March, and on British Summer Time (UTC+1) for the rest of the year. Quoting a London gap without saying which half of the year you mean is the most common time-zone mistake there is.

What is the time difference between London and New York?

Five hours for most of the year, London ahead. In 2026 it drops to four hours from 8 to 28 March and again from 25 to 31 October, because the United States changes its clocks earlier in spring and later in autumn than the United Kingdom does.