{"id":48071,"date":"2026-10-26T04:24:12","date_gmt":"2026-10-26T04:24:12","guid":{"rendered":"https:\/\/www.worldclock.com\/tinh-gio-sao\/"},"modified":"2026-10-26T04:24:12","modified_gmt":"2026-10-26T04:24:12","slug":"tinh-gio-sao","status":"publish","type":"page","link":"https:\/\/www.worldclock.com\/vi\/tinh-gio-sao\/","title":{"rendered":"T\u00ednh gi\u1edd sao &#038; Ng\u00e0y Julius"},"content":{"rendered":"<div class=\"wc wc-tool-page wc-tool-page--sidereal\"><header class=\"wc-thero\"><div class=\"wc-thero__text\"><nav class=\"wc-crumbs\" aria-label=\"Breadcrumb\"><ol><li><a href=\"https:\/\/www.worldclock.com\/vi\/\">\u0110\u1ed3ng h\u1ed3 th\u1ebf gi\u1edbi<\/a><\/li><li><a href=\"https:\/\/www.worldclock.com\/vi\/cong-cu\/\">C\u00f4ng c\u1ee5 th\u1eddi gian<\/a><\/li><li><span aria-current=\"page\">T\u00ednh gi\u1edd sao &amp; Ng\u00e0y Julius<\/span><\/li><\/ol><\/nav><p class=\"wc-eyebrow\"><span aria-hidden=\"true\">\ud83c\udf0c<\/span> C\u00f4ng c\u1ee5 mi\u1ec5n ph\u00ed<\/p><h1 class=\"wc-thero__title\">T\u00ednh gi\u1edd sao &amp; Ng\u00e0y Julius<\/h1><p class=\"wc-thero__lead\">Gi\u1edd sao \u0111\u1ecba ph\u01b0\u01a1ng, gi\u1edd sao Greenwich, Ng\u00e0y Julius v\u00e0 Ng\u00e0y Julius r\u00fat g\u1ecdn tr\u1ef1c ti\u1ebfp cho m\u1ecdi \u0111\u1ecba \u0111i\u1ec3m v\u00e0 th\u1eddi \u0111i\u1ec3m.<\/p><\/div><\/header><div class=\"wc-tool\"><div class=\"wc-sid\" data-wc-tool=\"sidereal\" data-default=\"{&quot;n&quot;:&quot;Greenwich&quot;,&quot;t&quot;:&quot;Europe\\\/London&quot;,&quot;f&quot;:&quot;gb&quot;,&quot;a&quot;:51.4769,&quot;o&quot;:-0.0005}\"><div class=\"wc-tbar\"><div class=\"wc-field wc-field--grow\"><span>V\u1ecb tr\u00ed<\/span><div class=\"wc-search wc-search--tool\" data-wc-search data-mode=\"add\"><input type=\"search\" placeholder=\"T\u00ecm th\u00e0nh ph\u1ed1\u2026\" aria-label=\"T\u00ecm th\u00e0nh ph\u1ed1\u2026\" autocomplete=\"off\"><ul class=\"wc-search__results\" hidden><\/ul><\/div><\/div><label class=\"wc-field\"><span>Kinh \u0111\u1ed9 \u00b0<\/span><input type=\"number\" step=\"0.0001\" min=\"-180\" max=\"180\" data-lng><\/label><button type=\"button\" class=\"wc-btn wc-btn--ghost\" data-geo>\ud83d\udccd D\u00f9ng v\u1ecb tr\u00ed c\u1ee7a t\u00f4i<\/button><\/div><div class=\"wc-sunc__place\" data-place><\/div><div class=\"wc-sunc__cards\" data-cards><\/div><div class=\"wc-panel\" style=\"margin-top:16px\"><h2>Quy \u0111\u1ed5i m\u1ed9t ng\u00e0y<\/h2><label class=\"wc-field\"><span>Ng\u00e0y &amp; gi\u1edd (UTC)<\/span><input type=\"datetime-local\" step=\"1\" data-dt><\/label><dl class=\"wc-unix__out\" data-out><\/dl><\/div><\/div><\/div><section class=\"wc-section wc-tool-info\"><div class=\"wc-prose\"><h2>Gi\u1edd sao l\u00e0 g\u00ec?<\/h2><p>Gi\u1edd sao \u0111o chuy\u1ec3n \u0111\u1ed9ng quay c\u1ee7a Tr\u00e1i \u0110\u1ea5t so v\u1edbi c\u00e1c ng\u00f4i sao \u1edf xa thay v\u00ec so v\u1edbi m\u1eb7t tr\u1eddi. M\u1ed9t ng\u00e0y sao d\u00e0i kho\u1ea3ng <strong>23 gi\u1edd 56 ph\u00fat 4 gi\u00e2y<\/strong> \u2013 ng\u1eafn h\u01a1n ng\u00e0y m\u1eb7t tr\u1eddi g\u1ea7n b\u1ed1n ph\u00fat \u2013 n\u00ean c\u00e1c ng\u00f4i sao m\u1ecdc s\u1edbm h\u01a1n b\u1ed1n ph\u00fat m\u1ed7i \u0111\u00eam. C\u00e1c nh\u00e0 thi\u00ean v\u0103n d\u00f9ng <strong>gi\u1edd sao \u0111\u1ecba ph\u01b0\u01a1ng (LST)<\/strong> \u0111\u1ec3 h\u01b0\u1edbng k\u00ednh thi\u00ean v\u0103n: m\u1ed9t ng\u00f4i sao l\u00ean cao nh\u1ea5t tr\u00ean b\u1ea7u tr\u1eddi khi LST b\u1eb1ng x\u00edch kinh c\u1ee7a n\u00f3.<\/p><p><strong>Ng\u00e0y Julius<\/strong> l\u00e0 s\u1ed1 ng\u00e0y \u0111\u1ebfm li\u00ean t\u1ee5c k\u1ec3 t\u1eeb gi\u1eefa tr\u01b0a UTC ng\u00e0y 1 th\u00e1ng 1 n\u0103m 4713 TCN, \u0111\u01b0\u1ee3c d\u00f9ng trong thi\u00ean v\u0103n h\u1ecdc \u0111\u1ec3 tr\u00e1nh s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a l\u1ecbch. <strong>Ng\u00e0y Julius r\u00fat g\u1ecdn<\/strong> (MJD) b\u1eb1ng JD \u2212 2.400.000,5 v\u00e0 b\u1eaft \u0111\u1ea7u l\u00fac n\u1eeda \u0111\u00eam.<\/p><\/div><\/section><section class=\"wc-section wc-faq\"><h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2><details><summary>L\u00e0m sao t\u00ednh gi\u1edd sao \u0111\u1ecba ph\u01b0\u01a1ng?<\/summary><p>T\u00ednh gi\u1edd sao trung b\u00ecnh Greenwich t\u1eeb Ng\u00e0y Julius, r\u1ed3i c\u1ed9ng kinh \u0111\u1ed9 c\u1ee7a b\u1ea1n quy ra gi\u1edd (kinh \u0111\u1ed9 \u00f7 15, ph\u00eda \u0111\u00f4ng l\u00e0 d\u01b0\u01a1ng). C\u00f4ng c\u1ee5 \u1edf tr\u00ean t\u00ednh tr\u1ef1c ti\u1ebfp cho m\u1ecdi v\u1ecb tr\u00ed.<\/p><\/details><\/section><section class=\"wc-section wc-tools-grid\"><div class=\"wc-section__head\"><h2>Th\u00eam c\u00f4ng c\u1ee5 th\u1eddi gian mi\u1ec5n ph\u00ed<\/h2><a href=\"https:\/\/www.worldclock.com\/vi\/cong-cu\/\">T\u1ea5t c\u1ea3 c\u00f4ng c\u1ee5 \u2192<\/a><\/div><div class=\"wc-toolcards\"><a class=\"wc-toolcard wc-toolcard--sun\" href=\"https:\/\/www.worldclock.com\/vi\/mat-troi-moc-lan\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83c\udf05<\/span><span class=\"wc-toolcard__name\">T\u00ednh gi\u1edd m\u1eb7t tr\u1eddi m\u1ecdc &amp; l\u1eb7n<\/span><span class=\"wc-toolcard__desc\">M\u1eb7t tr\u1eddi m\u1ecdc, l\u1eb7n v\u00e0 gi\u1edd v\u00e0ng.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--golden\" href=\"https:\/\/www.worldclock.com\/vi\/tinh-gio-vang\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83d\udcf8<\/span><span class=\"wc-toolcard__name\">M\u00e1y t\u00ednh gi\u1edd v\u00e0ng<\/span><span class=\"wc-toolcard__desc\">\u00c1nh s\u00e1ng \u0111\u1eb9p nh\u1ea5t \u0111\u1ec3 ch\u1ee5p \u1ea3nh.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--moon\" href=\"https:\/\/www.worldclock.com\/vi\/pha-mat-trang\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83c\udf15<\/span><span class=\"wc-toolcard__name\">Pha m\u1eb7t tr\u0103ng h\u00f4m nay<\/span><span class=\"wc-toolcard__desc\">Tr\u0103ng \u0111\u00eam nay &amp; l\u1ecbch m\u1eb7t tr\u0103ng.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--fullmoon\" href=\"https:\/\/www.worldclock.com\/vi\/lich-trang-tron-2\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83c\udf1d<\/span><span class=\"wc-toolcard__name\">L\u1ecbch tr\u0103ng tr\u00f2n<\/span><span class=\"wc-toolcard__desc\">Ng\u00e0y &amp; t\u00ean c\u00e1c l\u1ea7n tr\u0103ng tr\u00f2n.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--moonrise\" href=\"https:\/\/www.worldclock.com\/vi\/trang-moc-trang-lan\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83c\udf19<\/span><span class=\"wc-toolcard__name\">Gi\u1edd tr\u0103ng m\u1ecdc &amp; tr\u0103ng l\u1eb7n<\/span><span class=\"wc-toolcard__desc\">Khi n\u00e0o tr\u0103ng m\u1ecdc &amp; l\u1eb7n.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--birthmoon\" href=\"https:\/\/www.worldclock.com\/vi\/pha-mat-trang-ngay-sinh\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83c\udf82<\/span><span class=\"wc-toolcard__name\">Tr\u0103ng ng\u00e0y sinh c\u1ee7a b\u1ea1n<\/span><span class=\"wc-toolcard__desc\">M\u1eb7t tr\u0103ng v\u00e0o ng\u00e0y b\u1ea5t k\u1ef3.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--astro\" href=\"https:\/\/www.worldclock.com\/vi\/lich-thien-van\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83d\udd2d<\/span><span class=\"wc-toolcard__name\">L\u1ecbch thi\u00ean v\u0103n<\/span><span class=\"wc-toolcard__desc\">Nh\u1eadt\/nguy\u1ec7t th\u1ef1c, sao b\u0103ng &amp; s\u1ef1 ki\u1ec7n b\u1ea7u tr\u1eddi.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--converter\" href=\"https:\/\/www.worldclock.com\/vi\/doi-mui-gio-2\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83d\udd01<\/span><span class=\"wc-toolcard__name\">\u0110\u1ed5i m\u00fai gi\u1edd<\/span><span class=\"wc-toolcard__desc\">Quy \u0111\u1ed5i gi\u1edd gi\u1eefa m\u1ecdi th\u00e0nh ph\u1ed1.<\/span><\/a><\/div><\/section><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":"","bs_cache_bypass_cache":0,"bs_cache_related_page":0},"class_list":["post-48071","page","type-page","status-publish","hentry"],"acf":[],"taxonomy_info":[],"featured_image_src_large":false,"author_info":{"display_name":"clocker","author_link":"https:\/\/www.worldclock.com\/vi\/author\/clocker\/"},"comment_info":"","_links":{"self":[{"href":"https:\/\/www.worldclock.com\/vi\/wp-json\/wp\/v2\/pages\/48071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.worldclock.com\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.worldclock.com\/vi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.worldclock.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.worldclock.com\/vi\/wp-json\/wp\/v2\/comments?post=48071"}],"version-history":[{"count":0,"href":"https:\/\/www.worldclock.com\/vi\/wp-json\/wp\/v2\/pages\/48071\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.worldclock.com\/vi\/wp-json\/wp\/v2\/media?parent=48071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}