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UK on BST - not GMT - in the summer

The UK does not observe Greenwich Mean Time (GMT) during Daylight Saving Time, but rather British Summer Time (BST), 1 hour ahead of GMT and UTC. The UK sets the clocks forward one hour in March and back again in October.

Illustration image
Tthe Royal Observatory in Greenwich, London
The "home" of GMT is the Royal Observatory in Greenwich, London

Incorrect UK Time Zone Results

For this reason, selecting “UTC / GMT” when calculating time differences for locations in the United Kingdom, for example using our Time Zone Converter or Meeting Planner, will lead to wrong results when daylight saving time is in force. To make sure that daylight saving time is automatically taken into account, please select an actual location (e.g. London).

The World Clock and the extended World Clock automatically take daylight saving time into account and always show the correct local time for all cities.

What's the difference between GMT and UTC?

Countries observing GMT

The only European country which stays on GMT all year round is Iceland. During the winter months in the northern hemisphere, GMT is also used in Ireland and in most of the United Kingdom, including England, Wales, Scotland, and Northern Ireland.

BST does not apply to overseas territories of the United Kingdom, such as the British Virgin Islands and Gibraltar.

Proposals to abandon GMT

Proposals have been made several times to change the UK’s standard time zone to Central European Time (CET). The argument is that such a change would improve business and transport links with other countries and might lower the number of road traffic accidents.

Adopting Central European Time (CET / CEST) in the United Kingdom would result in later sunrises during winter, particularly affecting people in the north of England and Scotland.

Topics: Time, Time Zone, Daylight Saving Time, UK

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