British Summer Time was first established by the Summer Time Act 1916, after a campaign by builder William Willett. His original proposal was to move the clocks forward by 80 minutes, in 20-minute weekly steps on Sundays in April and by the reverse procedure in September.  In 1916, BST began on 21 May and ended on 1 October. 
The United Kingdom experimentally adopted Central European Time by maintaining Summer Time throughout the year from 1968 to 1971. In a House of Lords debate, Richard Butler, 17th Viscount Mountgarret said that the change was welcomed at the time, but the experiment was eventually halted after a debate in 1971, in which the outcome might have been influenced by a major accident on the morning ...
Note: Below is the scheduled line-up for the 2020 series; on 8 April 2020, the entire series was cancelled due to public assembly concerns in regards to the coronavirus pandemic.
As well as the music artists shown above, the FIFA World Cupsemi-final match between England and Croatia was screened. This was the largest London screening of a football match since 1996.
Elton Johnhad been scheduled to perform on Friday 12 July, but he had to cancel due to illness. All tickets were refunded and the event was made free as a one-off.
Daylight saving time (DST), also known as daylight savings time or daylight time (United States, Canada, and Australia), and summer time (United Kingdom, European Union, and others), is the practice of advancing clocks (typically by one hour) during warmer months so that darkness falls at a later clock time.
Western European Summer Time is also known by other names: British Summer Time (BST) in the United Kingdom. Irish Standard Time (IST) (Am Caighdeánach na hÉireann (ACÉ)) in Ireland. This is sometimes called Irish Summer Time (Am Samhraidh na hÉireann). The scheme runs from the last Sunday in March to the last Sunday in October each year.