Th\u00e1ng c\u1ee7a d\u01b0\u01a1ng l\u1ecbch chia th\u00e0nh th\u00e1ng \u0111\u1ee7 v\u00e0 th\u00e1ng thi\u1ebfu, th\u00e1ng \u0111\u1ee7 31 ng\u00e0y, th\u00e1ng thi\u1ebfu 30 ng\u00e0y. Duy ch\u1ec9 c\u00f3 th\u00e1ng 2 l\u00e0 28 ng\u00e0y. C\u00f3 nh\u1eefng n\u0103m l\u00e0 29 ng\u00e0y. \u0110\u00f3 l\u00e0 v\u00ec sao?<\/p>\n\n\n\n
N\u00f3i ra r\u1ea5t bu\u1ed3n c\u01b0\u1eddi, quy \u0111\u1ecbnh n\u00e0y v\u00f4 c\u00f9ng hoang \u0111\u01b0\u1eddng. N\u0103m 1946 tr\u01b0\u1edbc C\u00f4ng Nguy\u00ean, Ho\u00e0ng \u0111\u1ebf La M\u00e3 l\u00e0 Julius Caesar b\u1eaft \u0111\u1ea7u l\u00e0m l\u1ecbch, quy \u0111\u1ecbnh m\u1ed7i n\u0103m c\u00f3 12 th\u00e1ng, g\u1eb7p th\u00e1ng l\u1ebb l\u00e0 th\u00e1ng \u0111\u1ee7, 31 ng\u00e0y; g\u1eb7p th\u00e1ng ch\u1eb5n l\u00e0 th\u00e1ng thi\u1ebfu, 30 ng\u00e0y. Th\u00e1ng 2 l\u00e0 th\u00e1ng ch\u1eb5n c\u0169ng n\u00ean l\u00e0 30 ng\u00e0y. Nh\u01b0ng t\u00ednh ra nh\u01b0 th\u1ebf m\u1ed9t n\u0103m kh\u00f4ng ph\u1ea3i l\u00e0 365 ng\u00e0y m\u00e0 l\u00e0 366 ng\u00e0y. Do \u0111\u00f3 ph\u1ea3i t\u00ecm c\u00e1ch c\u1eaft \u0111i m\u1ed9t ng\u00e0y. V\u1eady c\u1eaft ng\u00e0y c\u1ee7a th\u00e1ng n\u00e0o?<\/p>\n\n\n\n
H\u1ed3i \u0111\u00f3 theo th\u00f3i quen c\u1ee7a La M\u00e3, c\u00e1c t\u1ed9i ph\u1ea1m b\u1ecb ph\u1ea1t t\u1eed h\u00ecnh \u0111\u1ec1u h\u00e0nh quy\u1ebft v\u00e0o th\u00e1ng 2, cho n\u00ean ng\u01b0\u1eddi ta cho r\u1eb1ng th\u00e1ng 2 l\u00e0 th\u00e1ng b\u1ea5t l\u1ee3i. M\u1ed9t n\u0103m ph\u1ea3i c\u1eaft \u0111i 1 ng\u00e0y, v\u1eady th\u00ec c\u1eaft ng\u00e0y c\u1ee7a th\u00e1ng 2 \u0111\u1ec3 cho th\u00e1ng b\u1ea5t l\u1ee3i \u0111\u00f3 ng\u1eafn \u0111i. Do \u0111\u00f3 th\u00e1ng 2 tr\u1edf th\u00e0nh 29 ng\u00e0y. \u0110\u00f3 l\u00e0 l\u1ecbch Julius Caesar.<\/p>\n\n\n\n
V\u1ec1 sau Augustus k\u1ebf nhi\u1ec7m Ho\u00e0ng \u0111\u1ebf Julius Caesar. Augustus ph\u00e1t hi\u1ec7n Julius Caesar sinh v\u00e0o th\u00e1ng 7, l\u00e0 th\u00e1ng \u0111\u1ee7 c\u00f3 31 ng\u00e0y. Augustus sinh th\u00e1ng<\/p>\n\n\n\n
Nh\u01b0ng th\u00e1ng 8 l\u00e0 th\u00e1ng ch\u1eb5n, th\u00e1ng thi\u1ebfu ch\u1ec9 c\u00f3 30 ng\u00e0y. \u0110\u1ec3 bi\u1ec3u th\u1ecb s\u1ef1 t\u00f4n nghi\u00eam gi\u1ed1ng nh\u01b0 Julius Caesar, Augustus \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh s\u1eeda th\u00e1ng 8 th\u00e0nh th\u00e1ng \u0111\u1ee7 31 ng\u00e0y. \u0110\u1ed3ng th\u1eddi nh\u1eefng th\u00e1ng kh\u00e1c c\u1ee7a n\u1eeda n\u0103m sau c\u0169ng s\u1eeda theo, th\u00e1ng 9 v\u00e0 th\u00e1ng 11 nguy\u00ean l\u00e0 th\u00e1ng \u0111\u1ee7 s\u1eeda th\u00e0nh th\u00e1ng thi\u1ebfu; th\u00e1ng 10 v\u00e0 th\u00e1ng 12 nguy\u00ean l\u00e0 th\u00e1ng thi\u1ebfu s\u1eeda th\u00e0nh th\u00e1ng \u0111\u1ee7. Nh\u01b0 v\u1eady v\u1eabn d\u01b0 ra m\u1ed9t ng\u00e0y. V\u1eady l\u00e0m th\u1ebf n\u00e0o? Ng\u01b0\u1eddi ta l\u1ea1i theo c\u00e1ch c\u0169 kh\u1ea5u \u0111i m\u1ed9t ng\u00e0y c\u1ee7a th\u00e1ng 2 b\u1ea5t l\u1ee3i. Do \u0111\u00f3 th\u00e1ng 2 ch\u1ec9 c\u00f2n 28 ng\u00e0y.<\/p>\n\n\n\n
H\u01a1n 2000 n\u0103m nay ng\u01b0\u1eddi ta \u0111\u00e3 quen d\u00f9ng quy \u0111\u1ecbnh b\u1ea5t h\u1ee3p l\u00fd n\u00e0y. Nh\u1eefng ng\u01b0\u1eddi nghi\u00ean c\u1ee9u l\u1ecbch ph\u00e1p c\u1ee7a c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi \u0111\u00e3 \u0111\u01b0a ra nhi\u1ec1u ph\u01b0\u01a1ng \u00e1n c\u1ea3i ti\u1ebfn nh\u1eb1m s\u1eeda \u0111\u1ed5i l\u1ecbch ng\u00e0y c\u00e0ng h\u1ee3p l\u00fd h\u01a1n.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Th\u00e1ng \u0111\u1ee7; Th\u00e1ng thi\u1ebfu; L\u1ecbch Julius Caesar.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Th\u00e1ng c\u1ee7a d\u01b0\u01a1ng l\u1ecbch chia th\u00e0nh th\u00e1ng \u0111\u1ee7 v\u00e0 th\u00e1ng thi\u1ebfu, th\u00e1ng \u0111\u1ee7 31 ng\u00e0y, th\u00e1ng thi\u1ebfu 30 ng\u00e0y. Duy ch\u1ec9 c\u00f3 th\u00e1ng 2 l\u00e0 28 ng\u00e0y. C\u00f3 nh\u1eefng n\u0103m l\u00e0 29 ng\u00e0y. \u0110\u00f3 l\u00e0 v\u00ec sao? N\u00f3i ra r\u1ea5t bu\u1ed3n c\u01b0\u1eddi, quy \u0111\u1ecbnh n\u00e0y v\u00f4 c\u00f9ng hoang \u0111\u01b0\u1eddng. N\u0103m 1946 tr\u01b0\u1edbc C\u00f4ng Nguy\u00ean, Ho\u00e0ng […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,7],"tags":[],"class_list":["post-6863","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/6863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=6863"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/6863\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=6863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=6863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=6863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}