A day on Earth is described as 24 hours, but the planet has been slowing down for billions of years — and growth rings in ancient coral fossils show that 380 million years ago, hundreds of millions of years before any dinosaur existed, an Earth day was only about 22 hours long

1.0Canada News Beep | NewsBeep.comhttps://www.newsbeep.com/caNEWSBEEPhttps://www.newsbeep.com/ca/author/newsbeep/A day on Earth is described as 24 hours, but the planet has been slowing down for billions of years — and growth rings in ancient coral fossils show that 380 million years ago, hundreds of millions of years before any dinosaur existed, an Earth day was only about 22 hours longrich600338<blockquote class="wp-embedded-content" data-secret="uHFQ4nDLGI"><a href="https://www.newsbeep.com/ca/703607/">A day on Earth is described as 24 hours, but the planet has been slowing down for billions of years — and growth rings in ancient coral fossils show that 380 million years ago, hundreds of millions of years before any dinosaur existed, an Earth day was only about 22 hours long</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.newsbeep.com/ca/703607/embed/#?secret=uHFQ4nDLGI" width="600" height="338" title="“A day on Earth is described as 24 hours, but the planet has been slowing down for billions of years — and growth rings in ancient coral fossils show that 380 million years ago, hundreds of millions of years before any dinosaur existed, an Earth day was only about 22 hours long” — Canada News Beep | NewsBeep.com" data-secret="uHFQ4nDLGI" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.newsbeep.com/ca/wp-includes/js/wp-embed.min.js </script> https://www.newsbeep.com/ca/wp-content/uploads/2026/05/Posts-1600840-2026-05-30T095546.978-768x403.png600315