{"id":1999,"date":"2020-09-22T07:31:00","date_gmt":"2020-09-22T13:31:00","guid":{"rendered":"http:\/\/www.ahwilderness.com\/?p=1999"},"modified":"2020-09-15T18:27:21","modified_gmt":"2020-09-16T00:27:21","slug":"equinox-more-or-less","status":"publish","type":"post","link":"http:\/\/www.ahwilderness.com\/?p=1999","title":{"rendered":"Equinox, more or less"},"content":{"rendered":"<p><a href=\"https:\/\/www.usno.navy.mil\/USNO\/tours-events\/sky-this-week\/the-sky-this-week-2020-september-15-22\">The Sky This Week, 2020 September 15 &#8211; 22 \u00e2\u20ac\u201d Naval Oceanography Portal<\/a><\/p>\n<blockquote><p>The astronomical season of autumn begins on the 22nd at 9:31 am EDT.\u00c2\u00a0 This is the moment when the Sun\u00e2\u20ac\u2122s disc reaches an ecliptic longitude of 180 degrees and crosses from the northern hemisphere of the sky into the southern hemisphere.\u00c2\u00a0 While the term \u00e2\u20ac\u0153equinox\u00e2\u20ac\u009d means \u00e2\u20ac\u0153equal night\u00e2\u20ac\u009d, a glance at a sunrise\/sunset table reveals that the difference between sunrise and sunset on this date isn\u00e2\u20ac\u2122t exactly 12 hours as one might expect.\u00c2\u00a0 Since the Sun subtends a tangible disc and we measure sunrise and sunset by the first and last appearances of the solar limbs, the duration of daylight is 12 hours and 8 minutes on the 22nd here in Washington.\u00c2\u00a0 The actual date when day and night are equal falls on the 26th.\u00c2\u00a0 From then until March 16th next year our nights will be longer than our days.<\/p><\/blockquote>\n<blockquote><p>[&#8220;Hello, darkness, my old friend.&#8221;]<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>The Sky This Week, 2020 September 15 &#8211; 22 \u00e2\u20ac\u201d Naval Oceanography Portal The astronomical season of autumn begins on the 22nd at 9:31 am EDT.\u00c2\u00a0 This is the moment when the Sun\u00e2\u20ac\u2122s disc reaches an ecliptic longitude of 180 degrees and crosses from the northern hemisphere of the sky into the southern hemisphere.\u00c2\u00a0 While &hellip; <a href=\"http:\/\/www.ahwilderness.com\/?p=1999\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Equinox, more or less<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1999","post","type-post","status-publish","format-standard","hentry","category-sky"],"_links":{"self":[{"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=\/wp\/v2\/posts\/1999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1999"}],"version-history":[{"count":0,"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=\/wp\/v2\/posts\/1999\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1999"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ahwilderness.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}