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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 ).
Date and time notation in the United Kingdom. Date and time notation in the United Kingdom records the date using the day–month–year format (31 December 1999, 31/12/99 or 31/12/1999). The ISO 8601 format (1999-12-31) is increasingly used for all-numeric dates. [citation needed] The time can be written using either the 24-hour clock (23:59 ...
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.
The meanings of the color terms violet and purple varies even among native speakers of English, for example between United Kingdom and United States.
In some British authoritative texts the term purple refers to any mixture of red and blue, suggesting the color term purple covers the full range between red and blue in the United Kingdom. In other texts it is the term violet that covers the same full range of colors.
Even among modern native speakers of English there is confusion about the terms purple and violet. In the United Kingdom, many native speakers of English refer to the blue-dominated spectral color beyond blue as violet, but this color is called purple by many speakers in the United States.
Each time zone is defined by a standard offset from Coordinated Universal Time (UTC). The offsets range from UTC−12:00 to UTC+14:00, and are usually a whole number of hours, but a few zones are offset by an additional 30 or 45 minutes, such as in India and Nepal.
After the Easter Rising, the time difference between Ireland and Britain was found inconvenient for telegraphic communication and the Time (Ireland) Act 1916 provided that Irish time would be the same as British time, from 2:00 am Dublin Mean Time on Sunday 1 October 1916.
In optics, violet is a spectral color (referring to the color of different single wavelengths of light), whereas purple is the color of various combinations of red and blue (or violet) light, [5] [6] some of which humans perceive as similar to violet.
Current time zones. Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communication, navigation, scientific research, and commerce.