{"id":186100,"date":"2020-02-28T18:21:16","date_gmt":"2020-02-28T17:21:16","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=186100"},"modified":"2020-02-29T07:17:55","modified_gmt":"2020-02-29T06:17:55","slug":"astronomicky-ustav-akademie-ved-cr-unor-dnes-nekonci","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=186100","title":{"rendered":"ASTRONOMICK\u00dd \u00daSTAV AKADEMIE V\u011aD \u010cR: \u00danor dnes nekon\u010d\u00ed"},"content":{"rendered":"<h6>Z\u00edtra bude 29. \u00fanora, proto\u017ee rok 2020 je p\u0159estupn\u00fdm rokem. P\u0159estupn\u00fd rok je del\u0161\u00ed ne\u017e b\u011b\u017en\u00fd rok a vkl\u00e1d\u00e1 se kv\u016fli vyrovn\u00e1n\u00ed rozd\u00edlu mezi d\u00e9lkou kalend\u00e1\u0159n\u00edho a tropick\u00e9ho roku.<\/h6>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-181090 alignright\" src=\"http:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/02\/astronomick\u00fd-\u00fastav-logo-300x122.png\" alt=\"\" width=\"300\" height=\"122\" srcset=\"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/02\/astronomick\u00fd-\u00fastav-logo-300x122.png 300w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/02\/astronomick\u00fd-\u00fastav-logo.png 437w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-186119\" src=\"http:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/02\/28\/29-289x300.jpg\" alt=\"\" width=\"150\" height=\"156\" srcset=\"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/02\/28\/29-289x300.jpg 289w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/02\/28\/29.jpg 303w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/>D\u00e9lka kalend\u00e1\u0159n\u00edho roku je dan\u00e1 ur\u010dit\u00fdm po\u010dtem dn\u00ed odvozen\u00fdch od doby rotace Zem\u011b kolem sv\u00e9 osy. Tropick\u00fd rok je proti tomu d\u00e1n dobou ob\u011bhu Zem\u011b kolem Slunce a koresponduje s opakovan\u00fdm st\u0159\u00edd\u00e1n\u00edm ro\u010dn\u00edch obdob\u00ed, tedy rovnodennostmi a slunovraty.<\/p>\n<p>Jin\u00fdmi slovy &#8211; b\u011b\u017en\u00fd kalend\u00e1\u0159n\u00ed ro<span class=\"text_exposed_show\">k trv\u00e1 365 dn\u00ed, ale Zem\u011b ob\u011bhne kolem Slunce za 365 dn\u00ed 5 hodin 49 minut. Pr\u00e1v\u011b proto se nap\u0159. okam\u017eik letn\u00edho slunovratu opo\u017e\u010fuje ka\u017ed\u00fd n\u00e1sleduj\u00edc\u00ed rok o on\u011bch p\u0159eb\u00fdvaj\u00edc\u00edch 5 hodin a 49 minut. <\/span><\/p>\n<p><span class=\"text_exposed_show\">Za\u0159azen\u00edm p\u0159estupn\u00e9ho roku se okam\u017eik letn\u00edho slunovratu \u201ep\u0159edb\u011bhne\u201c o 24h \u2013 5h 49min = 18h 11min. P\u0159itom m\u016f\u017ee doj\u00edt i ke zm\u011bn\u011b data letn\u00edho slunovratu na 20. \u010derven. To nastane pr\u00e1v\u011b letos, poprv\u00e9 od roku 1796.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><strong>FB \u2013\u00a0<a href=\"https:\/\/www.facebook.com\/AstronomickyUstav\/\" target=\"_blank\" rel=\"noopener\">Astronomick\u00fd \u00fastav AV \u010cR<\/a><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Z\u00edtra bude <\/p>\n","protected":false},"author":2,"featured_media":186122,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[110],"tags":[],"jetpack_featured_media_url":"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/02\/28\/r\u00e1me\u010dek-\u00fanor.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/186100"}],"collection":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=186100"}],"version-history":[{"count":2,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/186100\/revisions"}],"predecessor-version":[{"id":186123,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/186100\/revisions\/186123"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/186122"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=186100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=186100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=186100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}