{"id":18945,"date":"2026-03-20T07:14:18","date_gmt":"2026-03-20T06:14:18","guid":{"rendered":"https:\/\/www.bretzel-liquide.com\/blog\/?p=18945"},"modified":"2026-03-20T07:15:06","modified_gmt":"2026-03-20T06:15:06","slug":"le-retour-du-printemps","status":"publish","type":"post","link":"https:\/\/www.bretzel-liquide.com\/blog\/2026\/03\/20\/le-retour-du-printemps\/","title":{"rendered":"le retour du printemps"},"content":{"rendered":"\n
\"Angelina<\/a><\/figure>\n\n\n\n

le retour du printemps <\/p>\n\n\n\n

David LaChapelle<\/a>, Angelina Jolie <\/p>\n\n\n\n

alt : Angelina Jolie, nue dans les fleurs, vivant intens\u00e9ment le retour du printemps<\/p>\n\n\n\n

le printemps commence le 20\u00a0mars depuis 2012 d\u00e9j\u00e0. Et cela continuera jusqu’en 2047. En 2048, l’\u00e9quinoxe de mars est m\u00eame annonc\u00e9 pour le 19. En toute fin de journ\u00e9e, mais quand m\u00eame.<\/p>\n\n\n\n

Cette ann\u00e9e, le Laboratoire Temps Espace (LTE) est formel, l’\u00e9quinoxe de printemps\u00a0– rappelons que c’est au m\u00eame moment celui de l’automne\u00a0dans l’h\u00e9misph\u00e8re sud\u00a0– aura lieu, heure de Paris, le vendredi\u00a020\u00a0mars \u00e0 15\u00a0heures 45\u00a0minutes et 57\u00a0secondes tr\u00e8s pr\u00e9cis\u00e9ment.<\/p>\n\n\n\n

\u00c0 ce moment-l\u00e0, notre Soleil se placera \u00e0 l’intersection du plan de l’\u00e9cliptique – celui d\u00e9fini par l’orbite de la Terre – et du plan \u00e9quatorial c\u00e9leste – qui n’est pas le m\u00eame parce que la Terre est inclin\u00e9e dans l’espace. Et tout cela se fait selon une m\u00e9canique bien huil\u00e9e.<\/p>\n\n\n\n

\u00c0 quand un nouveau printemps le 21 mars\u2009?<\/h2>\n\n\n\n

Sauf que cette m\u00e9canique ne co\u00efncide pas exactement avec le calendrier que nous mis au point. Notre plan\u00e8te, en effet, met environ 365,242\u2009199\u00a0jours pour faire le tour du\u00a0Soleil. Ce n’est pas seulement la date de l’\u00e9quinoxe de printemps qui est amen\u00e9e \u00e0 changer. Celles des deux \u00e9quinoxes mais aussi celle des deux\u00a0solstices\u00a0varient finalement d’environ 6\u00a0heures par an. Notre fameux\u00a0\u00ab\u2009jour bissextil\u2009\u00bb<\/em>\u00a0permet de rattraper le temps, \u00e0 l’occasion. Mais pas \u00e0 la perfection. Ainsi pour retrouver un printemps qui commencera le 21\u00a0mars, il nous faudra patienter jusqu’en… 2102\u2009!<\/p>\n\n\n\n

source : futura-sciences.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

le retour du printemps David LaChapelle, Angelina Jolie alt : Angelina Jolie, nue dans les fleurs, vivant intens\u00e9ment le retour du printemps le printemps commence le 20\u00a0mars depuis 2012 d\u00e9j\u00e0. Et cela continuera jusqu’en 2047. En 2048, l’\u00e9quinoxe de mars est m\u00eame annonc\u00e9 pour le 19. En toute fin de journ\u00e9e, mais quand m\u00eame. Cette […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[2755,2805,151,4,344,153],"class_list":["post-18945","post","type-post","status-publish","format-standard","hentry","category-agence-france-brette","tag-angelina-jolie","tag-david-lachapelle","tag-fleur","tag-photo","tag-printemps","tag-science"],"yoast_head":"\nle retour du printemps - \u00e0 l'ombre d'un paradoxe en fleur<\/title>\n<meta name=\"description\" content=\"le retour du printemps\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bretzel-liquide.com\/blog\/2026\/03\/20\/le-retour-du-printemps\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"le retour du printemps - 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