United Kingdom not on GMT in the summer
The United Kingdom does not observe Greenwich Mean Time (GMT) during daylight saving time in the summer months. Instead the country observes British Summer Time (BST), which is one hour ahead of GMT and UTC. The United Kingdom moves its clocks forward by one hour on the last Sunday of March and back again on the last Sunday of October.
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).
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.
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.
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