{"id":1281,"date":"2023-04-26T00:00:00","date_gmt":"2023-04-26T00:00:00","guid":{"rendered":"https:\/\/www.nextias.com\/current_affairs\/uncategorized\/26-04-2023\/zero-shadow-day\/"},"modified":"2023-04-26T00:00:00","modified_gmt":"2023-04-26T00:00:00","slug":"zero-shadow-day","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/26-04-2023\/zero-shadow-day","title":{"rendered":"Zero Shadow Day"},"content":{"rendered":"<p><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong><u>In News<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type:disc\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">At 12:17 PM IST on April 25, Bengaluru<\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#3e3e3e\"> <\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">and at all places along the 130<\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><sup> <\/sup><\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">\u00a0north Latitude<\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#3e3e3e\"> <\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">experienced a <\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong>\u2018Zero Shadow Day\u2019.<\/strong><\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong><u>What is \u2018Zero Shadow Day\u2019(ZSD)?<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type:disc\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">A\u00a0ZSD\u00a0is a day on which the\u00a0<\/span><\/span><\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Sun\" style=\"text-decoration:none\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">Sun<\/span><\/span><\/span><\/a><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">\u00a0<\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong>does not cast a\u00a0shadow\u00a0of an object at\u00a0<\/strong><\/span><\/span><\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Solar_noon\" style=\"text-decoration:none\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong>solar noon<\/strong><\/span><\/span><\/span><\/a><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">, when the sun will be exactly at the\u00a0zenith\u00a0position(highest point in the sky)<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type:disc\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">ZSD happens <\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong>twice a year for locations in the\u00a0<\/strong><\/span><\/span><\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Tropics\" style=\"text-decoration:none\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong>tropics<\/strong><\/span><\/span><\/span><\/a><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">\u00a0(between the Tropic of\u00a0<\/span><\/span><\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Tropic_of_Cancer\" style=\"text-decoration:none\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">Cancer<\/span><\/span><\/span><\/a><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">\u00a0at +23.5 degrees of latitude and the\u00a0<\/span><\/span><\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Tropic_of_Capricorn\" style=\"text-decoration:none\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">Tropic of Capricorn<\/span><\/span><\/span><\/a><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">\u00a0at -23.5 degrees of latitude).<\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#3e3e3e\"> <\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">So, places north of Ranchi in <\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong>India does not have Zero shadow day.<\/strong><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type:disc\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">One ZSD falls during Uttarayan (movement of the Sun from south to north from winter solstice to summer solstice) and one other during Dakshinayan (back from north to south).\u00a0\u00a0\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type:disc\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">The dates will vary for different locations on\u00a0<\/span><\/span><\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Earth\" style=\"text-decoration:none\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">Earth<\/span><\/span><\/span><\/a><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong><u>Why does a ZSD happen?<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type:disc\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">Uttarayan and Dakshinayan happen because Earth\u2019s rotation axis is tilted at an angle of roughly 23.5\u00b0 to the axis of revolution around the Sun.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type:disc\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">When the Sun is at the zenith its rays make the shadow <\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\"><strong>exactly under it, <\/strong><\/span><\/span><\/span><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">making it look like no shadow.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#000000\">Source: <\/span><\/span><\/span><a href=\"https:\/\/indianexpress.com\/article\/explained\/explained-sci-tech\/bengaluru-zero-shadow-day-what-is-it-why-does-it-happen-8575725\/#:~:text=%E2%80%9COn%20April%2025%2C%202023%2C,would%20disappear%20at%20that%20instant.\" style=\"text-decoration:none\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size:12pt\"><span style=\"font-family:Arial\"><span style=\"color:#1155cc\"><u>IE<\/u><\/span><\/span><\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In News At 12:17 PM IST on April 25, Bengaluru and at all places along the 130 \u00a0north Latitude experienced a \u2018Zero Shadow Day\u2019. What is \u2018Zero Shadow Day\u2019(ZSD)? A\u00a0ZSD\u00a0is a day on which the\u00a0Sun\u00a0does not cast a\u00a0shadow\u00a0of an object at\u00a0solar noon, when the sun will be exactly at the\u00a0zenith\u00a0position(highest point in the sky) ZSD [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1282,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[25,44],"class_list":["post-1281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-current-affairs","tag-gs1","tag-physical-geography"],"acf":[],"jetpack_featured_media_url":"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2023\/07\/4566594Screenshot_6.png","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/1281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=1281"}],"version-history":[{"count":0,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/1281\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media\/1282"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=1281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=1281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=1281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}