{"id":2474,"date":"2013-01-29T09:49:43","date_gmt":"2013-01-29T08:49:43","guid":{"rendered":"http:\/\/blocs.xtec.cat\/lboix\/?p=2474"},"modified":"2020-04-22T22:26:49","modified_gmt":"2020-04-22T20:26:49","slug":"2-de-febrer-cristopher-clavius","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/general\/2-de-febrer-cristopher-clavius\/","title":{"rendered":"2 de febrer: Cristopher Clavius"},"content":{"rendered":"<p>El 2 de febrer de 1612 moria amb 75 anys el jesu\u00efta <strong>Cristopher Clavius<\/strong>.  Aquest matem\u00e0tic i ast\u00f2nom d\u2019origen alemany va ser l\u2019encarregat de la  reforma del calendari que encara \u00e9s vigent en l\u2019actualitat.<\/p>\n<p><a href=\"http:\/\/blocs.xtec.cat\/lboix\/files\/2013\/01\/Christopher_Clavius.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-thumbnail wp-image-2475\" src=\"http:\/\/blocs.xtec.cat\/lboix\/files\/2013\/01\/Christopher_Clavius-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>El <a href=\"http:\/\/ca.wikipedia.org\/wiki\/Calendari_juli%C3%A0\" target=\"_blank\" rel=\"noopener noreferrer\">calendari Juli\u00e0<\/a> comptava l\u2019any amb una durada de 365,25 dies (365 dies i 6 hores), per\u00f2 l\u2019<a href=\"http:\/\/ca.wikipedia.org\/wiki\/Any_tr%C3%B2pic\" target=\"_blank\" rel=\"noopener noreferrer\">any<\/a><a href=\"http:\/\/ca.wikipedia.org\/wiki\/Any_tr%C3%B2pic\" target=\"_blank\" rel=\"noopener noreferrer\"> tr\u00f2pic<\/a> \u00e9s de 365,242198 dies (365 dies 5 h 48 m 45,9 s). El fet de no tenir en  compte aquests gaireb\u00e9 11 minuts produeix un decalaix d\u2019uns tres dies  cada quatre segles. Per tant, des de la reforma juliana (any 46 a.n.e.) a  l\u2019encarregada a Clavius pel <a href=\"http:\/\/ca.wikipedia.org\/wiki\/Papa_Gregori_XIII\" target=\"_blank\" rel=\"noopener noreferrer\">Papa Gregori XIII<\/a> (any 1582) hi havia una desviaci\u00f3 d\u2019uns 10 dies entre la data \u201coficial\u201d i \u201creal\u201d de l\u2019equinocci de primavera.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Les dues principals reformes que va proposar Clavius per a la reforma del calendari juli\u00e0, vigent fins als moment, van ser:<\/p>\n<ul>\n<li> eliminar 10 dies del calendari passant directament de 4 al 15 d\u2019octubre de 1582<\/li>\n<li> crear excepcions als anys de trasp\u00e0s. Al calendari juli\u00e0 eren de  trasp\u00e0s tots els anys m\u00faltiples de 4. Ara ho serien tamb\u00e9, excepte els  finals de segle que no s\u00f3n m\u00faltiples de 400 (1800, 1900, 2100, 2200 no  s\u00f3n de trasp\u00e0s i 1600, 2000, 2400 s\u00ed que ho s\u00f3n)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>El 2 de febrer de 1612 moria amb 75 anys el jesu\u00efta Cristopher Clavius.  Aquest matem\u00e0tic i ast\u00f2nom d\u2019origen alemany va ser l\u2019encarregat de la  reforma del calendari que encara \u00e9s vigent en l\u2019actualitat.<br \/>\n<a href=\"http:\/\/blocs.xtec.cat\/lboix\/files\/2013\/01\/Christopher_Clavius.jpg\"><\/a><br \/>\n&nbsp;<br \/>\nEl <a href=\"http:\/\/ca.wikipedia.org\/wiki\/Calendari_juli%C3%A0\" target=\"_blank\" rel=\"noopener noreferrer\">calendari Juli\u00e0<\/a> comptava l\u2019any&hellip;  <a href=\"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/general\/2-de-febrer-cristopher-clavius\/\" title=\"Read 2 de febrer: Cristopher Clavius\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[1,122],"tags":[],"class_list":["post-2474","post","type-post","status-publish","format-standard","hentry","category-general","category-mates"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/posts\/2474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/comments?post=2474"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/posts\/2474\/revisions"}],"predecessor-version":[{"id":4686,"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/posts\/2474\/revisions\/4686"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/media?parent=2474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/categories?post=2474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/sesernestlluch-cunit\/wp-json\/wp\/v2\/tags?post=2474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}