{"id":433076,"date":"2026-03-22T14:54:09","date_gmt":"2026-03-22T13:54:09","guid":{"rendered":"https:\/\/climatescience.press\/?p=433076"},"modified":"2026-03-22T14:54:11","modified_gmt":"2026-03-22T13:54:11","slug":"no-euronews-a-millisecond-change-in-the-length-of-day-cant-be-tied-to-climate-change-nor-is-it-a-crisis","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=433076","title":{"rendered":"No, Euronews, a Millisecond Change in the Length of Day Can\u2019t Be Tied to Climate Change, Nor Is It a Crisis"},"content":{"rendered":"
\n
\"\"<\/figure>\n<\/div>\n\n\n

From ClimateRealism<\/a><\/p>\n\n\n\n

By Anthony Watts<\/a><\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

Euronews, writing in a recent article titled \u201cUnprecedented in the past 3.6 million years\u2019: How human-made climate change is making days longer<\/a>,\u2019\u201d claims that climate change is slowly but measurably altering Earth\u2019s rotation, lengthening the day by about 1.33 milliseconds over a century, implying troubling consequences ahead for society and the planet because it is \u201cunprecedented in the past 3.6 million years.\u201d This is patently and demonstrably false. Variations in Earth\u2019s length of day (LOD) of this magnitude or greater are routine and naturally occurring. The 1.33 millisecond variation poses no biological or societal threat, and technologies tied to time can be adjusted, if necessary, to account for the change.<\/p>\n\n\n\n

Euronews\u2019 article relies on a recent study<\/a> suggesting that melting ice and mass redistribution are influencing Earth\u2019s rotation. While redistribution of mass can affect angular momentum of the spinning Earth, which is basic physics, the framing of the article implies something unprecedented or destabilizing. The historical record shows otherwise.<\/p>\n\n\n\n

Earth\u2019s rotation has never been perfectly constant. It fluctuates continuously due to multiple natural mechanisms operating on different timescales.<\/p>\n\n\n\n

Seasonal redistribution of mass in the atmosphere and oceans adds about 0.5\u20131 millisecond annually, as wind systems shift and ocean currents adjust. Interannual climate patterns such as El Ni\u00f1o\u2013Southern Oscillation (ENSO) contribute an additional \u00b10.3\u20130.5 millisecond variation<\/a>. None of these processes are new, and none are evidence of planetary instability.<\/p>\n\n\n\n

In that context, a 1.33-millisecond shift sits squarely within the range of normal background variability, and is nothing to be concerned about.<\/p>\n\n\n\n

The long-term trend \u2014 Earth gradually slowing due to tidal friction from the Moon<\/a> \u2014 is also well understood. Based on 2,500 years of historical astronomical eclipse observations, science estimates the average increase in LOD at approximately +1.7 to +1.8 milliseconds per century<\/a>. That gradual braking has been operating for hundreds of millions of years. It is not caused by industrial emissions, nor is it accelerating catastrophically.<\/p>\n\n\n\n

Even more inconvenient for alarmist framing is the fact that Earth has recently sped up.<\/p>\n\n\n\n

From the mid-2010s through the early 2020s, Earth\u2019s rotation accelerated rather than slowed. June 29, 2022 was the shortest day ever recorded in the atomic timekeeping era<\/a> \u2014 approximately 1.59 milliseconds shorter. That record underscores how dynamic Earth\u2019s rotation is and how multiple forces, including core-mantle interactions and atmospheric changes, compete to influence it.<\/p>\n\n\n\n

If climate change were driving a simple, monotonic slowing of the planet\u2019s spin, we would not expect to see record-setting shorter days in recent years.<\/p>\n\n\n\n

The biological implications of a 1.33-millisecond change are effectively nonexistent. Humans, animals, and plants rely on circadian rhythms tuned to approximately 24 hours \u2014 not to thousandths of a second. A millisecond represents 0.001 seconds. In percentage terms, 1.33 milliseconds is roughly 0.000015 percent of a day. There is no plausible physiological pathway by which such a miniscule adjustment could disrupt ecosystems or human health. No living entity can detect or be affected by a thousandth of a second change in the length of a day.<\/p>\n\n\n\n

Technologically, the situation is equally unremarkable. Modern systems already account for irregularities in Earth\u2019s rotation. Since 1972, 27 leap seconds have been added to Coordinated Universal Time<\/a> (UTC) to keep atomic clocks synchronized with Earth\u2019s variable spin. Because of recent rotational acceleration, scientists are even discussing the possibility of implementing a negative leap second<\/a> \u2014 subtracting one second for the first time.<\/p>\n\n\n\n

According to Earth orientation data maintained by the International Earth Rotation and Reference Systems Service<\/a> (IERS), decadal fluctuations driven primarily by angular momentum exchange between the solid Earth and its fluid outer core routinely produce variations of  about 3\u20134 milliseconds. These are the largest short-term departures from the long-term trend and have been occurring for as long as we have had precise measurements.<\/p>\n\n\n\n

Satellite navigation systems, astronomical observatories, telecommunications networks, and financial trading platforms all rely on precise timekeeping. They already ingest continuous Earth orientation parameter updates from IERS<\/a> and adjust accordingly. The IERS monitors the rotation of the Earth, which is irregular, providing data on (the difference between Terrestrial Time and Universal Time) and potential leap seconds. These systems routinely handle corrections far larger than 1 millisecond without disruption.<\/p>\n\n\n\n

Consider also that society adjusts clocks by one hour every year in regions that observe daylight saving time; a shift 3.6 million times larger<\/em> than the change Euronews highlights. Leap years add an entire day. Leap seconds add or subtract a full second. By comparison, a millisecond-scale variation is trivial.<\/p>\n\n\n\n

The total peak-to-peak variation in Earth\u2019s LOD over the past century \u2014 combining effects such as tidal braking, core-mantle coupling, seasonal atmospheric effects, ENSO variability, and we find LOD acceleration has been on the order of 5\u20138 milliseconds<\/a>. These variations occurred long before modern concerns about climate change and reflect the complex physics of a rotating, fluid planet with a molten core, dynamic oceans, shifting winds, and gravitational interactions with the Moon.<\/p>\n\n\n\n

Earth is not a rigid clock. It is a complex and variable geophysical system. Presenting a 1.33-millisecond change as evidence of climate destabilization creates a false narrative of crisis. Yes, mass redistribution, whether from ice melt, atmospheric changes, or ocean circulation can influence rotational dynamics. But that influence is small, embedded within larger natural variability, and well within the bounds that scientists and engineers have been tracking and adjusting for decades.<\/p>\n\n\n\n

The practical consequence of LOD variability is careful timekeeping, something modern civilization already excels at managing. A millisecond does not threaten human biology. It does not endanger plant life. It does not destabilize ecosystems, and it does not overwhelm modern technology.<\/p>\n\n\n\n

If Euronews had bothered to even do a modicum of research into this phenomenon, they\u2019d know their story is based on misrepresentation of the cause of a change that can\u2019t be sensed and promotes false alarm. Instead, they went the \u201cclick bait\u201d route, choosing narrative over truth; badly misleading their readers in the process.<\/p>\n","protected":false},"excerpt":{"rendered":"

Euronews, writing in a recent article titled \u201cUnprecedented in the past 3.6 million years\u2019: How human-made climate change is making days longer,\u2019\u201d claims that climate change is slowly but measurably altering Earth\u2019s rotation, lengthening the day by about 1.33 milliseconds over a century, implying troubling consequences ahead for society and the planet because it is \u201cunprecedented in the past 3.6 million years.\u201d This is patently and demonstrably false. Variations in Earth\u2019s length of day (LOD) of this magnitude or greater are routine and naturally occurring. <\/p>\n","protected":false},"author":121246920,"featured_media":433082,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818056,691841970,691841969,691834872,691830916,691822769],"class_list":["post-433076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-climate-change","tag-earth-rotation-and-reference-systems-service-iers","tag-earths-length-of-day-lod","tag-earths-rotation-2","tag-el-nino-southern-oscillation-enso-4","tag-euronews","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1OF6","jetpack-related-posts":[{"id":447405,"url":"https:\/\/climatescience.press\/?p=447405","url_meta":{"origin":433076,"position":0},"title":"Wrong, BBC, No \u2018Climate Driven Millisecond Earth Rotation Crisis\u2019 Exists","author":"uwe.roland.gross","date":"05\/30\/2026","format":false,"excerpt":"The British Broadcasting Corporation (BBC) Science Focus article \u201cSomething \u2018unprecedented\u2019 is now happening to Earth\u2019s rotation, scientists say\u201d claims that climate change is causing an \u201cunprecedented\u201d slowing of Earth\u2019s rotation by 1.33 milliseconds per century, something not seen in 3.6 million years. This is false. The data show that millisecond-scale\u2026","rel":"","context":"In \"1.33 milliseconds per century\"","block_context":{"text":"1.33 milliseconds per century","link":"https:\/\/climatescience.press\/?tag=1-33-milliseconds-per-century"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Screenshot-2026-05-30-151118.png?fit=1096%2C944&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Screenshot-2026-05-30-151118.png?fit=1096%2C944&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Screenshot-2026-05-30-151118.png?fit=1096%2C944&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Screenshot-2026-05-30-151118.png?fit=1096%2C944&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Screenshot-2026-05-30-151118.png?fit=1096%2C944&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":431545,"url":"https:\/\/climatescience.press\/?p=431545","url_meta":{"origin":433076,"position":1},"title":"From Shortest Days Ever to the Fastest Slowdown in 3.6 Million Years: How Earth’s Rotation Tells Two Stories at Once","author":"uwe.roland.gross","date":"03\/16\/2026","format":false,"excerpt":"There are two different headlines describe the exact same planet\u2014but on completely different timescales. 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Might as well try to determine \u201cHow many angels can dance on the head\u2026","rel":"","context":"In \"CLIMATE CRAZINESS\"","block_context":{"text":"CLIMATE CRAZINESS","link":"https:\/\/climatescience.press\/?tag=climate-craziness"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/zslide-16-1024-1.webp?fit=1024%2C768&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/zslide-16-1024-1.webp?fit=1024%2C768&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/zslide-16-1024-1.webp?fit=1024%2C768&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/zslide-16-1024-1.webp?fit=1024%2C768&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-No-Euronews-a-Millisecond-Change-in-the-Length-of-Day-Cant-Be-Tied-to-Climate-Change-Nor-Is-It-a-Crisis1.jpg?fit=784%2C1168&ssl=1","_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/433076","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/users\/121246920"}],"replies":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=433076"}],"version-history":[{"count":5,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/433076\/revisions"}],"predecessor-version":[{"id":433083,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/433076\/revisions\/433083"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/433082"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=433076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=433076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=433076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}