Time Difference from London to Major World Cities
Visual offset comparison between London and key financial and international communication centers:
Drag the timeline scrubber to compare local hours across both locations:
Sunrise, Sunset and Solar Day Length in London
Solar cycle and day length calculated for coordinates 51.5074° lat, 0.1278° lon at an elevation of 11 meters above sea level:
Greenwich Mean Time Timezone Specifications & DST Rules
About the GMT Abbreviation
GMT stands for Greenwich Mean Time. It is observed in United Kingdom (Europe) at UTC +00:00. Note: During seasonal Daylight Saving Time periods, the abbreviation shifts to BST (UTC +01:00).
Read full GMT time zone guide, meanings & active territories →
Travel, Infrastructure & Business Essentials for London
Essential practical information for international business travelers, digital nomads, and expats visiting London:
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Related Cities in the Same Region & Timezone
Major commercial and administrative hubs in neighboring territories sharing direct regional links with London:
Historical Adoption & Legal Timekeeping Governance
Discover the current local time in London, United Kingdom, along with comprehensive timezone details, Daylight Saving Time (DST) schedules, and time difference information. London operates on Greenwich Mean Time (GMT) during the winter months and British Summer Time (BST) when DST is in effect. Understanding London's time zone is crucial for international calls, scheduling meetings, and coordinating travel plans. The city's adherence to GMT historically stems from its role as the prime meridian, the starting point for measuring global time. DST in London typically begins on the last Sunday in March and ends on the last Sunday in October, shifting the clock forward by one hour during the warmer months to maximize daylight. This detailed guide provides a complete overview of the London timezone, including its history, current status, and practical implications for residents and visitors. We also cover the impact of the timezone on business operations, cultural events, and daily life in this vibrant global city. Stay informed about the precise time in London and plan your activities accordingly. This information is updated to reflect the 2023-2026 schedule.
Historical Background: Officially adopted on 1884-02-23. Adoption of Greenwich Mean Time as the standard time for Great Britain.
Legal Time Authority:
Regulated by the UK Parliament
under official statutory decree Summer Time Act 1972.
Frequently Asked Questions about London Time
What is the current local time and timezone in London?
London operates on Greenwich Mean Time (abbreviated as GMT). The standard offset is UTC +00:00.
What does GMT timezone stand for?
GMT stands for Greenwich Mean Time. It maintains a standard offset of UTC +00:00 from Coordinated Universal Time (GMT / UTC).
Does London change clocks for Daylight Saving Time (DST)?
Yes, London observes Daylight Saving Time. Clocks move forward 1 hour in summer to BST (UTC +01:00) and return to standard time in winter.
What power plug and voltage adapter do I need for London?
United Kingdom uses plug types G with a standard voltage of 230V at 50Hz.
How can I convert time or schedule calls with London?
You can use the interactive 24-hour dual-slider converter directly on this page, or visit our Time Difference Tool and Meeting Planner to schedule seamless cross-timezone calls.