{"id":2841,"date":"2026-10-17T00:41:00","date_gmt":"2026-10-16T15:41:00","guid":{"rendered":"https:\/\/onepress.co.kr\/?post_type=briefing&p=2841"},"modified":"2026-10-17T00:42:47","modified_gmt":"2026-10-16T15:42:47","slug":"2026-10-17-continuous-utc-vi","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-10-17-continuous-utc-vi\/","title":{"rendered":"UTC li\u00ean t\u1ee5c s\u1ebd b\u1eaft \u0111\u1ea7u t\u1eeb ng\u00e0y 20 th\u00e1ng 5 n\u0103m 2027"},"content":{"rendered":"

2026-10-17 00:41:00 KST<\/strong><\/p>\n

H\u1ed9i ngh\u1ecb To\u00e0n th\u1ec3 v\u1ec1 C\u00e2n \u0111o \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh \u00e1p d\u1ee5ng UTC li\u00ean t\u1ee5c t\u1eeb ng\u00e0y 20 th\u00e1ng 5 n\u0103m 2027, ch\u1ea5m d\u1ee9t c\u01a1 ch\u1ebf \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng gi\u00e2y nhu\u1eadn.<\/p>\n

Thay \u0111\u1ed5i n\u1edbi ch\u00eanh l\u1ec7ch cho ph\u00e9p gi\u1eefa gi\u1edd d\u00e2n d\u1ee5ng v\u00e0 gi\u1edd d\u1ef1a tr\u00ean v\u00f2ng quay Tr\u00e1i \u0110\u1ea5t, kh\u00f4ng y\u00eau c\u1ea7u ch\u1ec9nh ngay \u0111\u1ed3ng h\u1ed3 m\u1ed9t gi\u1edd hay thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0i ng\u00e0y.<\/p>\n

V\u00ec sao m\u1ed9t gi\u00e2y c\u00f3 th\u1ec3 g\u00e2y tr\u1ee5c tr\u1eb7c?<\/h2>\n

\u0110\u1ed3ng h\u1ed3 nguy\u00ean t\u1eed gi\u1eef nh\u1ecbp \u1ed5n \u0111\u1ecbnh, c\u00f2n t\u1ed1c \u0111\u1ed9 quay c\u1ee7a Tr\u00e1i \u0110\u1ea5t bi\u1ebfn \u0111\u1ed9ng. Gi\u00e2y nhu\u1eadn \u0111\u00e3 gi\u00fap hai thang th\u1eddi gian g\u1ea7n nhau t\u1eeb n\u0103m 1972. Tuy nhi\u00ean, b\u01b0\u1edbc nh\u1ea3y th\u1eddi gian c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng h\u1ec7 th\u1ed1ng m\u00e0 ch\u00eanh l\u1ec7ch r\u1ea5t nh\u1ecf quy\u1ebft \u0111\u1ecbnh th\u1ee9 t\u1ef1 giao d\u1ecbch ho\u1eb7c li\u00ean l\u1ea1c. C\u00e1c nh\u00e0 cung c\u1ea5p c\u00f2n ph\u00e2n b\u1ed5 \u0111i\u1ec1u ch\u1ec9nh trong nh\u1eefng kho\u1ea3ng kh\u00e1c nhau, d\u1eabn t\u1edbi th\u1eddi gian gi\u1eefa h\u1ec7 th\u1ed1ng kh\u00f4ng th\u1ed1ng nh\u1ea5t.<\/p>\n

Gi\u1edbi h\u1ea1n 3.600 gi\u00e2y c\u00f3 ngh\u0129a g\u00ec?<\/h2>\n

Ngh\u1ecb quy\u1ebft 5 \u0111\u1eb7t ch\u00eanh l\u1ec7ch t\u1ed1i \u0111a cho ph\u00e9p gi\u1eefa UT1, th\u1eddi gian theo v\u00f2ng quay Tr\u00e1i \u0110\u1ea5t, v\u00e0 UTC l\u00e0 3.600 gi\u00e2y, t\u1ee9c m\u1ed9t gi\u1edd. N\u00f3 cho ph\u00e9p ch\u00eanh l\u1ec7ch t\u00edch l\u0169y trong th\u1eddi gian r\u1ea5t d\u00e0i, kh\u00f4ng t\u1ea1o ra kho\u1ea3ng c\u00e1ch \u1ea5y ngay l\u1eadp t\u1ee9c. \u0110i\u1ec1u n\u00e0y kh\u00e1c m\u00fai gi\u1edd v\u00e0 gi\u1edd m\u00f9a h\u00e8. Ng\u01b0\u1eddi \u0111\u1ecdc kh\u00f4ng c\u1ea7n ch\u1ec9nh \u0111\u1ed3ng h\u1ed3 t\u1ea1i Anh, H\u00e0n Qu\u1ed1c hay n\u01a1i kh\u00e1c th\u00eam m\u1ed9t gi\u1edd h\u00f4m nay.<\/p>\n

\"UTC
Minh h\u1ecda gi\u1ea3i th\u00edch do AI t\u1ea1o, kh\u00f4ng ph\u1ea3i \u1ea3nh th\u1eadt hay t\u00e1i hi\u1ec7n ch\u00ednh x\u00e1c thi\u1ebft b\u1ecb, t\u00e1c ph\u1ea9m, \u0111o l\u01b0\u1eddng ho\u1eb7c d\u1ef1 b\u00e1o.<\/figcaption><\/figure>\n

\u0110\u00e3 t\u1eebng b\u1edbt m\u1ed9t gi\u00e2y ch\u01b0a?<\/h2>\n

Nh\u1eefng gi\u00e2y nhu\u1eadn \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng t\u1edbi nay \u0111\u1ec1u th\u00eam m\u1ed9t gi\u00e2y. Khi Tr\u00e1i \u0110\u1ea5t quay nhanh h\u01a1n, c\u00f3 th\u1ec3 c\u1ea7n b\u1edbt m\u1ed9t gi\u00e2y, nh\u01b0ng gi\u00e2y nhu\u1eadn \u00e2m ch\u01b0a t\u1eebng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n. Ngh\u1ecb quy\u1ebft n\u00eau r\u1ee7i ro v\u1edbi h\u1ea1 t\u1ea7ng thi\u1ebft y\u1ebfu ch\u01b0a s\u1eb5n s\u00e0ng cho thao t\u00e1c n\u00e0y l\u00e0 l\u00fd do th\u00fac \u0111\u1ea9y thay \u0111\u1ed5i. \u0110\u00e2y l\u00e0 \u0111\u00e1nh gi\u00e1 nguy c\u01a1, kh\u00f4ng ph\u1ea3i d\u1ef1 b\u00e1o m\u1ea1ng vi\u1ec5n th\u00f4ng hay t\u00e0i ch\u00ednh ch\u1eafc ch\u1eafn h\u1ecfng v\u00e0o m\u1ed9t ng\u00e0y c\u1ee5 th\u1ec3.<\/p>\n

C\u1ea7n theo d\u00f5i g\u00ec tr\u01b0\u1edbc khi \u00e1p d\u1ee5ng?<\/h2>\n

Vi\u1ec7c th\u00f4ng qua ng\u00e0y 15 th\u00e1ng 10 \u0111\u01b0\u1ee3c \u0111\u1ed1i chi\u1ebfu v\u1edbi ngh\u1ecb quy\u1ebft BIPM v\u00e0 ph\u1ecfng v\u1ea5n \u0111\u1ed9c l\u1eadp c\u1ee7a b\u00e1o chuy\u00ean ng\u00e0nh. B\u00e0i \u0111\u00f3 c\u00f2n m\u1ed9t s\u1ed1 c\u00e1ch di\u1ec5n \u0111\u1ea1t tr\u01b0\u1edbc b\u1ecf phi\u1ebfu; chi ti\u1ebft x\u00e1c nh\u1eadn d\u1ef1a tr\u00ean ngh\u1ecb quy\u1ebft \u0111\u00e3 th\u00f4ng qua. H\u01b0\u1edbng d\u1eabn tri\u1ec3n khai v\u00e0 truy\u1ec1n th\u1eddi gian c\u1ee7a BIPM, IERS l\u00e0 ngu\u1ed3n c\u1ea7n theo d\u00f5i ti\u1ebfp. Quan s\u00e1t v\u00f2ng quay v\u1eabn ti\u1ebfp t\u1ee5c; c\u00e1ch x\u1eed l\u00fd ch\u00eanh l\u1ec7ch \u1edf t\u01b0\u01a1ng lai xa ch\u01b0a ph\u1ea3i m\u1ed9t l\u1ecbch ch\u1ec9nh \u0111\u1ed3ng h\u1ed3 m\u1ed9t gi\u1edd \u0111\u00e3 \u1ea5n \u0111\u1ecbnh.<\/p>\n

Ngu\u1ed3n g\u1ed1c v\u00e0 ki\u1ec3m ch\u1ee9ng \u0111\u1ed9c l\u1eadp<\/h2>\n

Ngh\u1ecb quy\u1ebft \u0111\u00e3 th\u00f4ng qua: ng\u00e0y \u00e1p d\u1ee5ng, gi\u1edbi h\u1ea1n 3.600 gi\u00e2y v\u00e0 r\u1ee7i ro gi\u00e2y \u00e2m; b\u1ea3n ti\u1ebfng Anh, ti\u1ebfng Ph\u00e1p l\u00e0 ch\u00ednh th\u1ee9c: BIPM \u2014 Resolution 5 (2026)<\/a><\/p>\n

Ph\u1ecfng v\u1ea5n \u0111\u1ed9c l\u1eadp IERS\/BIPM v\u00e0 c\u1eadp nh\u1eadt th\u00f4ng qua; \u0111\u1ecdc nguy\u00ean b\u1ea3n qua c\u00f4ng c\u1ee5 do h\u1ea1n ch\u1ebf HTTP; ngh\u1ecb quy\u1ebft \u01b0u ti\u00ean h\u01a1n c\u00e2u ch\u1eef \u0111\u1ec1 xu\u1ea5t c\u00f2n s\u00f3t: Timeanddate \u2014 Graham Jones, updated 15 October 2026<\/a><\/p>\n

\u0110\u1ecdc b\u1eb1ng ng\u00f4n ng\u1eef kh\u00e1c<\/h2>\n

\ud55c\uad6d\uc5b4<\/a> \u00b7 English<\/a> \u00b7 Espa\u00f1ol<\/a> \u00b7 \u65e5\u672c\u8a9e<\/a> \u00b7 Ti\u1ebfng Vi\u1ec7t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

H\u1ed9i ngh\u1ecb \u0111o l\u01b0\u1eddng qu\u1ed1c t\u1ebf \u0111\u00e3 th\u00f4ng qua thay \u0111\u1ed5i. N\u1edbi ch\u00eanh l\u1ec7ch cho ph\u00e9p v\u1edbi gi\u1edd theo v\u00f2ng quay Tr\u00e1i \u0110\u1ea5t kh\u00f4ng c\u00f3 ngh\u0129a ch\u1ec9nh \u0111\u1ed3ng h\u1ed3 ngay m\u1ed9t gi\u1edd.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2841","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/2841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing"}],"about":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/types\/briefing"}],"wp:attachment":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=2841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}