{"id":49684,"date":"2023-09-23T08:09:00","date_gmt":"2023-09-23T08:09:00","guid":{"rendered":"http:\/\/d23c24dc-2acc-4286-a861-dc8fc8bf5cc6"},"modified":"2023-09-23T08:32:34","modified_gmt":"2023-09-23T08:32:34","slug":"when-do-the-uk-clocks-change","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/rss_feed\/when-do-the-uk-clocks-change\/","title":{"rendered":"When do the UK clocks change?"},"content":{"rendered":"<p class=\"rssexcerpt\">When the clocks change and why. <\/p><p class=\"rssauthor\">By Iain Todd\n      <\/p><p class=\"rssbyline\">Published: Saturday, 23 September 2023 at 08:09 AM<\/p><hr class=\"no-tts wp-block-separator\"\/><?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><p>In 2023, British Summer Time (BST) ends on 29 October at 02:00 BST, which marks the point when the clocks go back to 01:00 UT, or GMT.<\/p><p>Daylight Saving Time ends on this date, meaning we will effectively gain an hour overnight between Saturday and Sunday.<\/p><p>British Summer Time begins again on Sunday 31 March 2024 at 2:00:00, when the clocks move forward an hour.<\/p><p><strong><em>For more info, read our guide on <a href=\"https:\/\/www.skyatnightmagazine.com\/space-science\/earth-seasons\">what causes the seasons<\/a> and our explainer on <a href=\"https:\/\/www.skyatnightmagazine.com\/space-science\/solstices-equinoxes\">solstices and equinoxes<\/a>.<\/em><\/strong><\/p><h2 id=\"h-why-do-the-clocks-go-forward-and-back\"><strong>Why do the clocks go forward and back?<\/strong><\/h2><figure class=\"wp-block-image size-large\"><figcaption class=\"wp-element-caption\">Close up of the meridian line at the Royal Observatory in Greenwich. The Meridian has been in use as the prime meridian, denoting longitude 0\u00ba, since 1750. Credit: Pam Susemiehl \/ Getty Images<\/figcaption><\/figure><p>The world\u2019s time zones are measured from the Greenwich Meridian and time in the UK is based on Greenwich Mean Time (GMT), which astronomers know as Universal Time (UT).<\/p><p>Just as they do in much of the world, clocks go forward one hour in the summer months, putting us in the UK on British Summer Time (BST).<\/p><div class=\"is-layout-flex wp-container-19 is-layout-flex wp-container-15 wp-block-columns\"><div class=\"is-layout-flow wp-block-column\"><figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/48\/2023\/09\/Waste-of-Daylight-19-cover-711x1024.jpg?fit=711,1024\" alt=\"William Willett's 'Waste of Daylight' pamphlet. Credit: William Willett (1858\u20131915), Public domain, via Wikimedia Commons\" class=\"wp-image-140699\" data-recalc-dims=\"1\"\/><figcaption class=\"wp-element-caption\">William Willett&#8217;s &#8216;Waste of Daylight&#8217; pamphlet. Credit: William Willett (1858\u20131915), Public domain, via Wikimedia Commons<\/figcaption><\/figure><\/div><div class=\"is-layout-flow wp-block-column\"><p>The practice began in the early 20th century as a result of a campaign to make the local time better match daylight hours.<\/p><p>The idea was that moving the clocks forward an hour would mean darker mornings and lighter evenings during summer, when the days are much longer.<\/p><p>One key individual was William Willett, who was a promoter of British Summer Time and who in 1907 published &#8216;The Waste of Daylight&#8217;, a pamphlet arguing for the changes.<\/p><\/div><\/div><div class=\"is-layout-flex wp-container-20 is-layout-flex wp-container-18 wp-block-columns\"><div class=\"is-layout-flow wp-block-column\" style=\"flex-basis:100%\"><p>In 1916 the Summer Time Act put clocks in the UK forward for one hour from 21 May until the start of October.<\/p><p>These days, clocks go forward 1 hour at 01:00 on the last Sunday in March, then back 1 hour at 02:00 on the last Sunday in October.<\/p><h2 id=\"h-the-end-of-daylight-saving\"><strong><strong>The end of Daylight Saving?<\/strong><\/strong><\/h2><\/div><\/div><p>Several proposals to look at changing Britain&#8217;s clocks have been put to Parliament in past decades.<\/p><p>One example is the Daylight Saving Bill, which failed on its third reading in the House of Commons on 20 January 2012 after running out of Parliamentary time.\u00a0<\/p><p>Introduced in June 2010, this Bill would have considered a shift forward of another hour in summer (to UT 2) and an hour in winter (to UT 1)<\/p><p>This would effectively have put the UK on Central European Time (CET).<\/p><p>For amateur astronomers, that would mean having to wait until later each evening for the stars to come out.<\/p><p>The days of re-setting alarm clocks and winding wrist watches are largely gone for many of us now, as our phones, tablets and other devices automatically adopt each time change.<\/p> <\/body><\/html>\n<hr class=\"no-tts wp-block-separator\"\/>","protected":false},"excerpt":{"rendered":"<p>When the clocks change and why. <\/p>\n","protected":false},"author":24,"featured_media":49685,"template":"","categories":[1],"acf":{"readingTimeMinutes":"3"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/09\/when-do-the-uk-clocks-change.jpg",2309,1299,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/09\/when-do-the-uk-clocks-change-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/09\/when-do-the-uk-clocks-change-300x169.jpg",300,169,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/09\/when-do-the-uk-clocks-change-768x432.jpg",768,432,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/09\/when-do-the-uk-clocks-change-1024x576.jpg",800,450,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/09\/when-do-the-uk-clocks-change-1536x864.jpg",1536,864,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/09\/when-do-the-uk-clocks-change-2048x1152.jpg",2048,1152,true]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"When the clocks change and why.","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed\/49684"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/49685"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=49684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=49684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}