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</html><thumbnail_url>https://www.ufrgs.br/amlef/wp-content/uploads/2021/08/cropped-ano-sinodico-1.jpg</thumbnail_url><thumbnail_width>192</thumbnail_width><thumbnail_height>266</thumbnail_height><description>O Ano tr&#xF3;pico est&#xE1; rela&#xAD;ci&#xAD;o&#xAD;nado ao movi&#xAD;mento de revo&#xAD;lu&#xAD;&#xE7;&#xE3;o da Terra, seu per&#xED;odo de dura&#xE7;&#xE3;o &#xE9; de 365,2422 dias solares m&#xE9;dios, ou 365d 5h 48m 46s. Contudo, o ano tro&#xAD;pi&#xAD;cal nem sempre tem a mesma dura&#xE7;&#xE3;o, isso ocorre devido &#xE0; &#x201C;osci&#xAD;la&#xAD;&#xE7;&#xE3;o&#x201D; no eixo de rota&#xE7;&#xE3;o da Terra, conhe&#xAD;cido como pre&#xAD;ces&#xAD;s&#xE3;o. Como usamos ofi&#xAD;ci&#xAD;al&#xAD;mente, o Calen&#xAD;d&#xE1;&#xAD;rio [&hellip;]</description></oembed>
