United Kingdom (GB)
Current Local Time in London, United Kingdom
Europe/London • UTC +1Saturday, October 10, 2026
5:23:26
PM Sunrise07:15
Sunset18:20
Solar Noon12:47
Day Length11h 5m
London Geographic & Administrative Facts
CountryUnited Kingdom
Coordinates51.51°N, -0.13°E
IANA TimezoneEurope/London
Daylight SavingActive (Summer Time)
Real-Time Horology Differential
Time Difference From London
Instantaneous hours ahead or behind across key global metropolises.
New York5 hours behind
New York is 5 hours behind of London.
12:23:26PM
Los Angeles8 hours behind
Los Angeles is 8 hours behind of London.
9:23:26AM
Toronto5 hours behind
Toronto is 5 hours behind of London.
12:23:26PM
Paris1 hour ahead
Paris is 1 hour ahead of London.
6:23:26PM
Berlin1 hour ahead
Berlin is 1 hour ahead of London.
6:23:26PM
Dubai3 hours ahead
Dubai is 3 hours ahead of London.
8:23:26PM
Delhi4 hours 30 minutes ahead
Delhi is 4 hours 30 minutes ahead of London.
9:53:26PM
Mumbai4 hours 30 minutes ahead
Mumbai is 4 hours 30 minutes ahead of London.
9:53:26PM
Singapore7 hours ahead
Singapore is 7 hours ahead of London.
12:23:26PM
Tokyo8 hours ahead
Tokyo is 8 hours ahead of London.
1:23:26AM
Sydney10 hours ahead
Sydney is 10 hours ahead of London.
3:23:26AM
Bilateral Time Corridors
Time Difference Guides for London
Live dual atomic clocks, daylight saving variations, and shared working hours.
New York to London
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London to New York
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London to Tokyo
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Tokyo to London
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Sydney to London
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London to Sydney
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London to Paris
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Paris to London
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Dubai to London
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London to Dubai
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Singapore to London
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London to Singapore
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Hong Kong to London
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London to Hong Kong
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San Francisco to London
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London to San Francisco
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Los Angeles to London
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London to Los Angeles
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Chicago to London
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London to Chicago
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Boston to London
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London to Boston
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Seattle to London
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London to Seattle
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Mumbai to London
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London to Mumbai
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Bengaluru to London
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London to Bengaluru
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Toronto to London
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London to Toronto
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Berlin to London
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London to Berlin
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São Paulo to London
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London to São Paulo
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Verified Atomic Local Time
Live Atomic Clock for London (GMT/BST)
Check the exact civil time in London with millisecond accuracy. As the historical home of the Prime Meridian at Greenwich, London serves as the geographic origin for world time zones.
Monitor British Summer Time (BST) transitions, track London Stock Exchange trading hours, and calculate business overlaps between the UK and global commerce hubs.
UK Daylight Saving Time Rules and Dates
Comprehensive reference data, atomic synchronization standards, and international temporal guidelines.
London Financial Markets and Global Overlap
Comprehensive reference data, atomic synchronization standards, and international temporal guidelines.
Frequently Asked Questions
Common queries, time calculations, and scientific explanations
Google SERP Verified
London follows Greenwich Mean Time (GMT, UTC+0) during winter months and British Summer Time (BST, UTC+1) during Daylight Saving Time.
Explore More Locations Near London
Quick access to international capitals, timezone offsets, chronometry tools, and horology guides
Precision Horology & Global Time Tools
City Time Differences Directory
Exact hours ahead & overlap for 92+ city pairs
Coordinated Universal Time (UTC)
Canonical atomic reference standard and UTC offset zero
Multi-Zone Time Converter Hub
Convert hours across global zones and cities
Compare World Cities
Direct side-by-side time difference and overlap
United States Time Now
Live atomic clocks across all US time zones and Washington D.C.
Exact Time Digital Clock
Precision digital chronometer with seconds and atomic reference
Online Pomodoro Timer
25/5 study and deep work productivity intervals
Accurate Analog Clock
Smooth sweeping second hand and Swiss watch dial
552 Timezone Converters
Visual timeline converter across 552 global timezone pairs
Date Difference Calculator
Exact days, weeks, months & business days between dates
Date Calculator
Add or subtract days, weeks, months & business days
Golden Hour Calculator
Exact photography lighting, blue hour & civil twilight times
Sunrise & Sunset Times Hub
NOAA algorithm solar dawn and dusk times worldwide
Moon Phases & Illumination
Live lunar surface illumination % and 29.5-day synodic cycle
Interactive World Time Map
Real-time solar terminator, day/night zones & 46 live clocks
400+ Time Zones Directory
Complete canonical IANA database with live ticking clocks
Interactive Timezone Map
Live global clock bands with clickable UTC offset zones
World Cities Directory
Current local time and population across global metropolises
Today's Date Details
Day of year, ISO week, Julian day & year progress percentage
ISO Week Number Calculator
Current ISO week number, calendar quarters & weeks remaining
ISO 8601 String Parser
Parse, validate and format ISO-8601 date-time strings
Unix Timestamp Converter
Epoch seconds converter to human readable UTC & local time
Astronomy & Twilight Lab
Sunrise, sunset, golden hour & moon phase calendar
International Dialing Codes
Country calling codes & smart calling hour guide
Multi-Clock World Wall
Trading floor kiosk with Swiss analog & digital dials
Flight & Jet Lag Calculator
Travel time & circadian light adjustment protocol
Online Alarm Clock
Fullscreen bedside display with Web Audio chimes
Meeting Planner
Overlap working window across 4+ global hubs
Team Overlap Calculator
Mutual working hours matrix for remote teams
Business Days Calculator
Working days between dates & 90-day deadlines
Birthday & Age Countdown
Weeks, days & exact chronological age tracker
Atomic Clock Accuracy
NTP drift latency benchmark
Unix Timestamp Studio
Epoch seconds converter & 2038 lab
Military Time Converter & Chart
Convert 12h to 24h military time with spoken pronunciation & printable chart
Work Hours & Timesheet Calculator
Calculate weekly hours, lunch deductions, overtime pay & gross wages
Best Time to Call Calculator
Find overlapping daytime calling window between international cities
Time Zone VS Comparisons
Head-to-head differences (CST vs EST, PST vs MST, GMT vs UTC)
Daylight Saving Schedule
Global spring forward & fall back dates
Horology Learning Academy
Deep dive into UTC, leap seconds & chronometry
SEO Authority Simulator
Interactive DA vs Keyword Difficulty ranking simulator
High-Volume City Time Differences
Global Financial & Metropolitan Capitals
New York, United StatesLondon, United KingdomTokyo, JapanParis, FranceBerlin, GermanyZurich, SwitzerlandMadrid, SpainMumbai, IndiaBengaluru, IndiaHong Kong, ChinaRome, ItalyChicago, United StatesLos Angeles, United StatesSan Francisco, United StatesWashington D.C., United StatesSão Paulo, BrazilToronto, CanadaSeoul, South KoreaCairo, EgyptDubai, United Arab EmiratesSydney, AustraliaSingapore, Singapore