{"id":615420,"date":"2026-01-18T17:23:48","date_gmt":"2026-01-18T16:23:48","guid":{"rendered":"https:\/\/cronologia-universale.it\/430000000-bc\/"},"modified":"2026-01-18T17:23:48","modified_gmt":"2026-01-18T16:23:48","slug":"500000000-bc-4","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/500000000-bc-4\/","title":{"rendered":"500,000,000 BC"},"content":{"rendered":"<p>The Earth&#8217;s day is 22 hours long; the friction exerted by the tides against the continental shelf and the inertia employed by the Earth itself to change shape under the lunar attraction will cause the day to slowly lengthen and the Moon to recede accordingly (momentum is conserved).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Earth&#8217;s day is 22 hours long; the friction exerted by the tides against the&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[39],"tags":[],"class_list":["post-615420","post","type-post","status-publish","format-standard","hentry","category-ge-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>500,000,000 BC - Cronologia Universale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cronologia-universale.it\/en\/500000000-bc-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"500,000,000 BC - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"The Earth&#8217;s day is 22 hours long; 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