UK time is called Greenwich Mean Time (GMT, UTC+00:00) during winter and British Summer Time (BST, UTC+01:00) during summer. Clocks change by one hour, switching to BST on the last Sunday of March and returning to GMT on the last Sunday of October. It is also known as Western European Time.
The UK uses Greenwich Mean Time (GMT) in winter and switches to British Summer Time (BST) in the summer, which is one hour ahead (GMT+1), from the last Sunday in March to the last Sunday in October, giving more evening daylight. So, it's GMT in winter and BST in summer.
The United Kingdom uses Greenwich Mean Time (GMT) UTC+00:00; also known as Western European Time; between October and March, and British Summer Time (BST) UTC+01:00; also known as Western European Summer Time for the rest of the year. BST applies from the last Sunday in March to the last Sunday in October.
The United Kingdom uses Greenwich Mean Time (also known as Western European Time or UTC) and British Summer Time (UTC+01:00) (also known as Western European Summer Time).
What Is UK Time Called? - United Kingdom Explorers
Are UTC and BST the same?
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. This time zone is only used for DST.
The United Kingdom operates on Greenwich Mean Time (GMT) during standard time and British Summer Time (BST), which is GMT+1, when daylight saving kicks in.
On 1st January 1982, following a decision by the International Telecommunication Union (UIT), GMT was replaced by UTC (Coordinated Universal Time), in order to correct universal time, in which the duration of the day is not constant throughout the year due to the Earth's rotation on its axis.
Big Ben is the nickname for the Great Bell of the Great Clock of Westminster, and, by extension, for the clock tower which stands at the north end of the Palace of Westminster in London, England.
GMT was ultimately adopted across Great Britain by the Railway Clearing House in December 1847. It officially became 'Railway Time'. By the mid-1850s, almost all public clocks in Britain were set to Greenwich Mean Time and it finally became Britain's legal standard time in 1880.
The period when the clocks are 1 hour ahead is called British Summer Time (BST). There's more daylight in the evenings and less in the mornings (sometimes called Daylight Saving Time).
GMT is the time in Greenwich, England, which is the point of reference for global time zones. The time reported in email messages is derived from GMT and an offset value (the offset represents the relationship of your local time zone to GMT).
The UK goes back to Greenwich Mean Time (GMT) from British Summer Time (BST) on the last Sunday in October, when clocks are turned back one hour from 2 AM to 1 AM, marking darker evenings and shorter days, with most devices updating automatically but some (like cars) needing manual adjustment.
The daily rotation of the Earth is irregular (see ΔT) and has a slowing trend; therefore atomic clocks constitute a much more stable timebase. On 1 January 1972, GMT as the international civil time standard was superseded by Coordinated Universal Time (UTC), maintained by an ensemble of atomic clocks around the world.
UTC literally stands for Universal Time Coordinated (though it is typically referred to as Coordinated Universal Time) and is the standard time common to every place in the world. It is also known as Greenwich Mean Time (GMT) and Zulu (Z).
In 1972, Universal Time Coordinated (UTC) replaced Greenwich Mean Time (GMT) as the global standard for timekeeping. The reference point for UTC remains 0 degrees longitude, but thanks to technological advances such as GPS, a more precise location for 0 degrees longitude was determined and agreed upon in 1984.
