[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.hass.cz\/proc-byl-zaveden-prestupny-rok\/#Article","mainEntityOfPage":"https:\/\/www.hass.cz\/proc-byl-zaveden-prestupny-rok\/","headline":"Pro\u010d byl zaveden p\u0159estupn\u00fd rok?","name":"Pro\u010d byl zaveden p\u0159estupn\u00fd rok?","description":"Jednou za \u010dty\u0159i roky m\u00e1 \u00fanor, nejkrat\u0161\u00ed m\u011bs\u00edc v\u00a0roce, o jeden den v\u00edc. A to nejen u n\u00e1s, ale na cel\u00e9m sv\u011bt\u011b. Roku, kdy k\u00a0tomuto jevu doch\u00e1z\u00ed, se \u0159\u00edk\u00e1 p\u0159estupn\u00fd. Mnoho lid\u00ed se v\u0161ak pt\u00e1, zda je skute\u010dn\u011b nezbytn\u00fd. P\u0159eci jen, v\u00a0n\u011bkter\u00fdch ohledech to situaci pon\u011bkud komplikuje. Koneckonc\u016f, co by se mohlo st\u00e1t, pokud bychom...","datePublished":"2023-10-06","dateModified":"2023-12-07","author":{"@type":"Person","@id":"https:\/\/www.hass.cz\/author\/#Person","name":"","url":"https:\/\/www.hass.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/91506ed60e31abe586276a3e1420719df081581a820344a28fa2034bb1a2fe22?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/91506ed60e31abe586276a3e1420719df081581a820344a28fa2034bb1a2fe22?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"hass.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.hass.cz\/wp-content\/uploads\/art475129_1x1_20260926_185555_xAbSXf.jpg","url":"https:\/\/www.hass.cz\/wp-content\/uploads\/art475129_1x1_20260926_185555_xAbSXf.jpg","height":0,"width":0},"url":"https:\/\/www.hass.cz\/proc-byl-zaveden-prestupny-rok\/","about":["V\u011bda"],"wordCount":421,"articleBody":"\tJednou za \u010dty\u0159i roky m\u00e1 \u00fanor, nejkrat\u0161\u00ed m\u011bs\u00edc v\u00a0roce, o jeden den v\u00edc. A to nejen u n\u00e1s, ale na cel\u00e9m sv\u011bt\u011b. Roku, kdy k\u00a0tomuto jevu doch\u00e1z\u00ed, se \u0159\u00edk\u00e1 p\u0159estupn\u00fd. Mnoho lid\u00ed se v\u0161ak pt\u00e1, zda je skute\u010dn\u011b nezbytn\u00fd. P\u0159eci jen, v\u00a0n\u011bkter\u00fdch ohledech to situaci pon\u011bkud komplikuje. Koneckonc\u016f, co by se mohlo st\u00e1t, pokud bychom jej zru\u0161ili?\tFaktem je, \u017ee byl zaveden z\u00a0ur\u010dit\u00e9ho d\u016fvodu. P\u016fvodn\u011b lid\u00e9 p\u0159esn\u011b nev\u011bd\u011bli, pro\u010d je pot\u0159eba, pouze pochopili, \u017ee je nutn\u00fd. Dnes ji\u017e v\u00edme, pro\u010d existuje. D\u016fvodem je ob\u011bh Zem\u011b kolem Slunce, \u010di sp\u00ed\u0161e jeho rychlost.\tVe \u0161kole n\u00e1s u\u010d\u00ed, \u017ee na\u0161e planeta ob\u011bhne kolem Slunce jednou za 365 dn\u00ed. To v\u0161ak nen\u00ed tak docela pravda. Cel\u00fd ob\u011bh toti\u017e ve skute\u010dnosti trv\u00e1 o \u010dtvrt dne d\u00e9le. A je to pr\u00e1v\u011b tato \u010dtvrtina, kter\u00e1 n\u00e1m ka\u017ed\u00e9 \u010dty\u0159i roky p\u0159id\u00e1v\u00e1 do kalend\u00e1\u0159e jeden den. \u00danor pak byl pom\u011brn\u011b snadn\u00e1 volba, nebo\u0165 m\u00e1 nejmen\u0161\u00ed po\u010det dn\u00ed.\tM\u016f\u017eeme se samoz\u0159ejm\u011b pt\u00e1t, co by se stalo, kdybychom p\u0159estupn\u00fd rok zkr\u00e1tka zru\u0161ili. N\u00e1sledky by v\u0161ak nebyly p\u011bkn\u00e9. Po n\u011bkolika letech, \u010di sp\u00ed\u0161e desetilet\u00edch, by doch\u00e1zelo k\u00a0\u010d\u00edm d\u00e1l v\u011bt\u0161\u00edmu rozd\u00edlu mezi kalend\u00e1\u0159em a skute\u010dn\u00fdm ro\u010dn\u00edm obdob\u00edm. Nakonec by se stalo, \u017ee bychom V\u00e1noce slavili ve skute\u010dnosti na ja\u0159e.\t\tAbychom tedy synchronizovali n\u00e1\u0161 kalend\u00e1\u0159 se skute\u010dnou rotac\u00ed Zem\u011b, bylo nutn\u00e9 p\u0159idat jednou za \u010dty\u0159i roky jeden den, aby se v\u0161e op\u011bt vyrovnalo. To je tak\u00e9 d\u016fvod, pro\u010d jej nem\u016f\u017eeme jen tak zru\u0161it. V\u00a0takov\u00e9m p\u0159\u00edpad\u011b by jej bylo nutn\u00e9 nahradit n\u011b\u010d\u00edm jin\u00fdm, pravd\u011bpodobn\u011b jin\u00fdm kalend\u00e1\u0159n\u00edm syst\u00e9mem.\tProbl\u00e9m je v\u00a0tom, \u017ee vymyslet takov\u00fd, kter\u00fd by bral v\u00a0\u00favahu fakt, \u017ee Zemi trv\u00e1 ob\u011bh o \u010dtvrt dne d\u00e9le, rozhodn\u011b nen\u00ed nijak snadn\u00e9. V\u00a0sou\u010dasnosti se dokonce zd\u00e1, \u017ee je to nemo\u017en\u00e9. Nav\u00edc lid\u00e9 jsou ji\u017e na tento zp\u016fsob m\u011b\u0159en\u00ed \u010dasu zvykl\u00ed, a zm\u011bna by jen zp\u016fsobila v\u011bt\u0161\u00ed zmatek. Zat\u00edm n\u00e1m tedy nezb\u00fdv\u00e1, ne\u017e si p\u0159estupn\u00fd rok ponechat. Bez n\u011bj se toti\u017e v\u00a0sou\u010dasnosti zkr\u00e1tka neobejdeme.                                                                                                                                                                                                                                                                                                                                                                                                "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Pro\u010d byl zaveden p\u0159estupn\u00fd rok?","item":"https:\/\/www.hass.cz\/proc-byl-zaveden-prestupny-rok\/#breadcrumbitem"}]}]