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  2. British Summer Time - Wikipedia

    en.wikipedia.org/wiki/British_Summer_Time

    Pale colours: Standard time observed all year Dark colours: Summer time observed During British Summer Time (BST), civil time in the United Kingdom is advanced one hour forward of Greenwich Mean Time (GMT), in effect changing the time zone from UTC+00:00 to UTC+01:00, so that mornings have one hour less daylight, and evenings one hour more.

  3. Time in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Time_in_the_United_Kingdom

    The IANA time zone database contains one zone for the United Kingdom in the file zone.tab, named Europe/London. This refers to the area having the ISO 3166-1 alpha-2 country code "GB". The zone names Europe/Guernsey, Europe/Isle_of_Man and Europe/Jersey exist because they have their own ISO 3166-1 alpha-2 but the zone.tab entries are links to ...

  4. List of time zone abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_time_zone...

    This is a list of time zone abbreviations. ... BST: British Summer Time (British Standard Time from Mar 1968 to Oct 1971) UTC+01:00: BTT: Bhutan Time: UTC+06:00: CAT:

  5. Western European Time - Wikipedia

    en.wikipedia.org/wiki/Western_European_Time

    Western European Time (WET, UTC+00:00) is a time zone covering parts of western Europe and consists of countries using UTC+00:00 (also known as Greenwich Mean Time, abbreviated GMT). [ 1 ] [ 2 ] It is one of the three standard time zones in the European Union along with Central European Time and Eastern European Time .

  6. Daylight saving time by country - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time_by...

    Observed DST (commonly referred to as British Summer Time (BST)) since 1916. Year-round Summer Time (BST) + Double Summer Time (BDST) 1940–1945. Two-stage Double Summer Time (BDST) 1947. Year-round Summer Time (BST) 1968–1971. Follows European Union practice, although no longer a member. United States

  7. Greenwich Mean Time - Wikipedia

    en.wikipedia.org/wiki/Greenwich_Mean_Time

    The term "GMT" is also used as one of the names for the time zone UTC+00:00 and, [2] in UK law, is the basis for civil time in the United Kingdom. [ 3 ] [ a ] Because of Earth's uneven angular velocity in its elliptical orbit and its axial tilt , noon (12:00:00) GMT is rarely the exact moment the Sun crosses the Greenwich Meridian [ b ] and ...

  8. List of tz database time zones - Wikipedia

    en.wikipedia.org/wiki/List_of_tz_database_time_zones

    The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2025a of the tz database. [2]

  9. List of time zones by country - Wikipedia

    en.wikipedia.org/wiki/List_of_time_zones_by_country

    UTC+00:00 (GMT in winter/BST in summer) – Main territory of the United Kingdom, Saint Helena, Ascension and Tristan da Cunha, Guernsey, Isle of Man, Jersey UTC+01:00 – Gibraltar UTC+02:00 – Akrotiri and Dhekelia UTC+06:00 – British Indian Ocean Territory: Time in the United Kingdom: Canada: 6