{"id":168,"date":"2026-01-06T08:10:01","date_gmt":"2026-01-06T01:10:01","guid":{"rendered":"https:\/\/kituaz.com\/blog\/?p=168"},"modified":"2026-01-06T08:12:56","modified_gmt":"2026-01-06T01:12:56","slug":"goc-giai-dap-viet-nam-thuoc-mui-gio-thu-may","status":"publish","type":"post","link":"https:\/\/kituaz.com\/blog\/goc-giai-dap-viet-nam-thuoc-mui-gio-thu-may\/","title":{"rendered":"Gi\u1edd Vi\u1ec7t Nam thu\u1ed9c m\u00fai gi\u1edd th\u1ee9 m\u1ea5y? M\u00fai gi\u1edd VN tr\u00f9ng v\u1edbi n\u01b0\u1edbc n\u00e0o?"},"content":{"rendered":"

\u0110\u00e3 bao gi\u1edd b\u1ea1n t\u1ef1 h\u1ecfi m\u00fai gi\u1edd Vi\u1ec7t Nam l\u00e0 bao nhi\u00eau? N\u00f3 c\u00f3 tr\u00f9ng v\u1edbi c\u00e1c qu\u1ed1c gia n\u00e0o kh\u00e1c tr\u00ean th\u1ebf gi\u1edbi hay kh\u00f4ng? N\u1ebfu b\u1ea1n c\u0169ng \u0111ang c\u00f3 nh\u1eefng th\u00e1c th\u1eafc m\u1eafc n\u00e0y v\u1eady h\u00e3y c\u00f9ng k\u00ed t\u1ef1 \u0111\u1eb7c bi\u1ec7t<\/a><\/strong> kituaz.com \u0111i t\u00ecm hi\u1ec3u nh\u00e9!<\/p>\n

M\u00fai gi\u1edd l\u00e0 g\u00ec? Tr\u00e1i \u0110\u1ea5t \u0111\u01b0\u1ee3c chia th\u00e0nh bao nhi\u00eau m\u00fai gi\u1edd?<\/b><\/h2>\n

M\u00fai gi\u1edd hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi v\u1edbi c\u00e1i t\u00ean kh\u00e1c l\u00e0 gi\u1edd \u0111\u1ecba ph\u01b0\u01a1ng. C\u00f3 ngh\u0129a r\u1eb1ng m\u1ed9t v\u00f9ng s\u1ebd \u0111\u01b0\u1ee3c quy \u01b0\u1edbc s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t th\u1eddi gian ti\u00eau chu\u1ea9n.<\/span><\/p>\n

\"M\u00fai
M\u00fai gi\u1edd l\u00e0 g\u00ec?<\/figcaption><\/figure>\n

T\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m x\u00e1c \u0111\u1ecbnh \u1edf tr\u00ean Tr\u00e1i \u0110\u1ea5t, m\u1ed9t n\u1eeda b\u00e1n c\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c m\u1eb7t tr\u1eddi chi\u1ebfu s\u00e1ng l\u00e0 bu\u1ed5i t\u1ed1i v\u00e0 n\u1eeda c\u00f2n l\u1ea1i s\u1ebd l\u00e0 bu\u1ed5i s\u00e1ng. \u0110\u1ec3 d\u1ec5 d\u00e0ng h\u01a1n cho vi\u1ec7c t\u00ednh to\u00e1n gi\u1edd gi\u1ea5c t\u1eeb v\u00f9ng n\u00e0y sang v\u00f9ng kh\u00e1c, ng\u01b0\u1eddi ta chia Tr\u00e1i \u0110\u1ea5t ra th\u00e0nh c\u00e1c ph\u1ea7n b\u1eb1ng nhau b\u1edfi 24 \u0111\u01b0\u1eddng kinh tuy\u1ebfn. M\u1ed7i m\u1ed9t ph\u1ea7n s\u1ebd c\u00e1ch nhau m\u1ed9t gi\u1edd.<\/span><\/p>\n

Kinh tuy\u1ebfn s\u1ed1 0 ch\u00ednh l\u00e0 kinh tuy\u1ebfn \u0111i qua \u0110\u00e0i thi\u00ean v\u0103n Ho\u00e0ng gia Anh<\/strong> \u1edf Greenwich, Lu\u00e2n \u0110\u00f4n. V\u00ec v\u1eady, m\u00fai gi\u1edd c\u1ee7a n\u01b0\u1edbc Anh l\u00e0 m\u00fai gi\u1edd 0, hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00fai gi\u1edd g\u1ed1c, gi\u1edd qu\u1ed1c t\u1ebf<\/span>. Sau \u0111\u00f3 c\u00e1c m\u00fai gi\u1edd kh\u00e1c tr\u00ean th\u1ebf gi\u1edbi s\u1ebd \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng \u0111\u1ed9 l\u1ec7ch so v\u1edbi m\u00fai gi\u1edd g\u1ed1c.<\/span><\/p>\n

K\u00ed hi\u1ec7u c\u1ee7a m\u00fai gi\u1edd tr\u01b0\u1edbc \u0111\u00e2y l\u00e0 GMT \u2013 l\u00e0 gi\u1edd trung b\u00ecnh c\u1ee7a Greenwich do n\u01b0\u1edbc Anh quy \u0111\u1ecbnh. Nh\u01b0ng do c\u00f2n m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf n\u00ean \u0111\u1ebfn n\u0103m 1980 ng\u01b0\u1eddi ra \u0111\u00e3 \u0111\u1ed5i th\u00e0nh k\u00fd hi\u1ec7u UTC \u2013 c\u00f3 ngh\u0129a l\u00e0 gi\u1edd ph\u1ed1i h\u1ee3p qu\u1ed1c t\u1ebf. Tuy nhi\u00ean trong ng\u00f4n ng\u1eef n\u00f3i th\u00ec ng\u01b0\u1eddi ta v\u1eabn s\u1eed d\u1ee5ng k\u00ed hi\u1ec7u GMT.<\/span><\/p>\n

Tr\u00e1i \u0110\u1ea5t \u0111\u01b0\u1ee3c l\u00e0m 24 m\u00fai gi\u1edd. M\u1ed7i khu v\u1ef1c s\u1ebd c\u00f3 m\u1ed9t gi\u1edd ri\u00eang, \u0111\u00f3 l\u00e0 gi\u1edd khu v\u1ef1c. M\u1ed7i khu v\u1ef1c gi\u1edd s\u1ebd r\u1ed9ng 15 kinh tuy\u1ebfn. <\/span>Hi\u1ec7n nay c\u00e1c n\u01b0\u1edbc ASEAN c\u00f3 t\u1ea5t c\u1ea3 l\u00e0 4 m\u00fai gi\u1edd v\u00e0 ch\u00eanh l\u1ec7ch nhau t\u1ed1i \u0111a 150 ph\u00fat.\u00a0<\/span><\/p>\n

N\u01b0\u1edbc Myanmar thu\u1ed9c m\u00fai gi\u1edd GMT + 6. C\u00e1c n\u01b0\u1edbc thu\u1ed9c m\u00fai gi\u1edd GMT + 7 l\u00e0: Vi\u1ec7t Nam, Campuchia, L\u00e0o, Th\u00e1i Lan. C\u00e1c n\u01b0\u1edbc thu\u1ed9c m\u00fai gi\u1edd GMT + 8 l\u00e0 Brunei, Malaysia, Singapore, Philippines. Ch\u1ec9 c\u00f3 ri\u00eang Indonesia l\u00e0 c\u00f3 3 m\u00fai gi\u1edd: GMT + 7, GMT + 8, GMT + 9.\u00a0<\/span><\/p>\n

Sau khi th\u1ea3o lu\u1eadn v\u00e0 xem x\u00e9t th\u00ec Hi\u1ec7p h\u1ed9i c\u00e1c qu\u1ed1c gia \u0110\u00f4ng Nam \u00c1 (ASEAN) \u0111\u00e3 th\u00f4ng qua m\u1ed9t m\u00fai gi\u1edd chu\u1ea9n l\u00e0 UTC + 8 cho t\u1ea5t c\u1ea3 c\u00e1c n\u01b0\u1edbc th\u00e0nh vi\u00ean.<\/span><\/p>\n

Gi\u1edd Vi\u1ec7t Nam thu\u1ed9c m\u00fai gi\u1edd th\u1ee9 m\u1ea5y?<\/h2>\n

Do Vi\u1ec7t Nam n\u1eb1m \u1edf kinh tuy\u1ebfn s\u1ed1 7 n\u00ean m\u00fai gi\u1edd chu\u1ea9n c\u1ee7a Vi\u1ec7t Nam s\u1ebd l\u00e0 c\u1ed9ng 7. K\u00ed hi\u1ec7u l\u00e0 UTC + 7<\/strong> hay GMT + 7.\u00a0<\/strong><\/span><\/p>\n

Ch\u00eanh l\u1ec7ch m\u00fai gi\u1edd gi\u1eefa Vi\u1ec7t Nam v\u00e0 c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi<\/b><\/h2>\n

V\u1eady m\u00fai gi\u1edd Vi\u1ec7t Nam ch\u00eanh l\u1ec7ch v\u1edbi m\u00fai gi\u1edd c\u00e1c n\u01b0\u1edbc nh\u01b0 th\u1ebf n\u00e0o, ch\u00fang ta h\u00e3y \u0111i t\u00ecm hi\u1ec3u nh\u00e9.<\/span><\/p>\n

\"M\u00fai
M\u00fai gi\u1edd c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi<\/figcaption><\/figure>\n

1. M\u00fai gi\u1edd Vi\u1ec7t Nam so v\u1edbi m\u00fai gi\u1edd H\u00e0n Qu\u1ed1c<\/b><\/h3>\n

Theo m\u00fai gi\u1edd chu\u1ea9n GMT th\u00ec Vi\u1ec7t Nam n\u1eb1m \u1edf m\u00fai gi\u1edd GMT +7, con m\u00fai gi\u1edd GMT c\u1ee7a H\u00e0n Qu\u1ed1c l\u00e0 +9. V\u00ec th\u1ebf H\u00e0n Qu\u1ed1c nhanh h\u01a1n Vi\u1ec7t Nam 2 ti\u1ebfng \u0111\u1ed3ng h\u1ed3.<\/span><\/p>\n

V\u00ed d\u1ee5, n\u1ebfu vi\u1ec7t Nam l\u00e0 10:00 gi\u1edd th\u00ec \u1edf H\u00e0n Qu\u1ed1c s\u1ebd l\u00e0 12:00 gi\u1edd.<\/span><\/p>\n

2. M\u00fai gi\u1edd Vi\u1ec7t Nam so v\u1edbi m\u00fai gi\u1edd Nh\u1eadt B\u1ea3n<\/b><\/h3>\n

Gi\u1edd chu\u1ea9n c\u1ee7a Nh\u1eadt B\u1ea3n hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 JST (Japan Standard Time). \u0110\u00e2y l\u00e0 m\u00fai gi\u1edd ti\u00eau chu\u1ea9n c\u1ee7a Nh\u1eadt v\u00e0 nhanh h\u01a1n gi\u1edd GMT 9 ti\u1ebfng. M\u00fai gi\u1edd c\u1ee7a Vi\u1ec7t Nam l\u00e0 GMT +7, c\u00f2n m\u00fai gi\u1edd c\u1ee7a Nh\u1eadt B\u1ea3n l\u00e0 GMT +9. Nh\u01b0 v\u1eady ch\u00eanh l\u1ec7ch m\u00fai gi\u1edd gi\u1eefa Vi\u1ec7t Nam v\u1edbi Nh\u1eadt B\u1ea3n l\u00e0 2 ti\u1ebfng.\u00a0<\/span><\/p>\n

VD: \u1ede Vi\u1ec7t Nam \u0111ang l\u00e0 7h00 th\u00ec \u1edf Nh\u1eadt B\u1ea3n s\u1ebd l\u00e0 9h00.<\/span><\/p>\n

3. M\u00fai gi\u1edd Vi\u1ec7t Nam so v\u1edbi m\u00fai gi\u1edd Singapore<\/b><\/h3>\n

Gi\u1edd chu\u1ea9n Singapore \u0111\u01b0\u1ee3c vi\u1ebft t\u1eaft SST ho\u1eb7c Waktu Piawai Singapura WPS v\u00e0 nhanh h\u01a1n 8 ti\u1ebfng so v\u1edbi gi\u1edd GMT (UTC+08:00). V\u00ed d\u1ee5, khi UTC l\u00e0 0h (00:00) th\u00ec \u1edf Singapore l\u00e0 8h s\u00e1ng (08:00) theo nh\u01b0 gi\u1edd chu\u1ea9n c\u1ee7a Singapore.<\/span><\/p>\n

Nh\u01b0 v\u1eady m\u00fai gi\u1edd Singapore s\u1ebd nhanh h\u01a1n m\u00fai gi\u1edd c\u1ee7a Vi\u1ec7t Nam l\u00e0 1 ti\u1ebfng. Do gi\u1edd Singapore l\u00e0 GMT +8, c\u00f2n c\u1ee7a Vi\u1ec7t Nam l\u00e0 GMT + 7.\u00a0<\/span><\/p>\n

V\u00ed d\u1ee5, \u1edf Vi\u1ec7t Nam \u0111ang l\u00e0 7h s\u00e1ng th\u00ec \u1edf Singapore l\u00e0 8h s\u00e1ng.<\/span><\/p>\n

4. M\u00fai gi\u1edd Vi\u1ec7t Nam so v\u1edbi m\u00fai gi\u1edd Canada<\/b><\/h3>\n

Canada l\u00e0 qu\u1ed1c gia c\u00f3 v\u00f9ng l\u00e3nh th\u1ed5 r\u1ed9ng l\u1edbn v\u00ec th\u1ebf n\u00f3 c\u00f3 t\u1edbi 6 m\u00fai gi\u1edd kh\u00e1c nhau:\u00a0<\/span><\/p>\n

M\u00fai gi\u1edd Th\u00e1i B\u00ecnh D\u01b0\u01a1ng (UTC -8:00)<\/strong><\/h4>\n

\u1ede Canada, m\u00fai gi\u1edd n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho v\u00f9ng British Columbia, ti\u00eau bi\u1ec3u \u0111\u00f3 l\u00e0 th\u00e0nh ph\u1ed1 Vancouver xinh t\u01b0\u01a1i v\u00e0 s\u00f4i \u0111\u1ed9ng. Gi\u1edd Canada \u1edf v\u00f9ng British Columbia so v\u1edbi Vi\u1ec7t Nam s\u1ebd c\u00e1ch nhau 15 gi\u1edd \u0111\u1ed3ng h\u1ed3.<\/span><\/p>\n

M\u00fai gi\u1edd mi\u1ec1n Trung \u1edf Canada (UTC-6:00)<\/strong><\/h4>\n

M\u00fai gi\u1edd mi\u1ec1n Trung \u1edf Canada \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch l\u1ea5y Gi\u1edd ph\u1ed1i h\u1ee3p qu\u1ed1c t\u1ebf tr\u1eeb \u0111i 6 ti\u1ebfng. \u1ede Canada, m\u00fai gi\u1edd n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho v\u00f9ng Manitoba v\u00e0 m\u1ed9t ph\u1ea7n nh\u1ecf \u1edf v\u00f9ng t\u00e2y b\u1eafc c\u1ee7a bang Ontario. Gi\u1edd Canada \u1edf v\u00f9ng t\u00e2y b\u1eafc bang Ontario v\u00e0 Manitoba so v\u1edbi Vi\u1ec7t Nam c\u00e1ch nhau 13 gi\u1edd \u0111\u1ed3ng h\u1ed3.<\/span><\/p>\n

M\u00fai gi\u1edd \u0110\u1ea1i T\u00e2y D\u01b0\u01a1ng \u1edf Canada (UTC-4:00)<\/strong><\/h4>\n

M\u00fai gi\u1edd \u0110\u1ea1i T\u00e2y D\u01b0\u01a1ng \u1edf Canada s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch l\u1ea5y gi\u1edd UTC tr\u1eeb \u0111i 4 ti\u1ebfng. Gi\u1edd n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho v\u00f9ng ven bi\u1ec3n New Brunswick v\u00e0 b\u00e1n \u0111\u1ea3o Nova Scotia. Gi\u1edd Canada \u1edf hai v\u00f9ng n\u00e0y so v\u1edbi Vi\u1ec7t Nam s\u1ebd c\u00e1ch nhau 11 gi\u1edd \u0111\u1ed3ng h\u1ed3.<\/span><\/p>\n

M\u00fai gi\u1edd mi\u1ec1n \u0110\u00f4ng \u1edf Canada (UTC-5:00)<\/strong><\/h4>\n

M\u00fai gi\u1edd mi\u1ec1n \u0110\u00f4ng Canada th\u00ec \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch l\u1ea5y gi\u1edd UTC tr\u1eeb \u0111i 5 ti\u1ebfng. M\u00fai gi\u1edd n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c bang: Ontario, Quebec v\u00e0 \u0111\u00f4ng trung Nunavut. M\u00fai gi\u1edd \u1edf nh\u1eefng khu v\u1ef1c n\u00e0y so v\u1edbi Vi\u1ec7t Nam s\u1ebd c\u00e1ch nhau 12 gi\u1edd \u0111\u1ed3ng h\u1ed3.<\/span><\/p>\n

M\u00fai gi\u1edd mi\u1ec1n N\u00fai \u1edf Canada (UTC-7:00)<\/strong><\/h4>\n

M\u00fai gi\u1edd n\u00e0y \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch l\u1ea5y gi\u1edd ph\u1ed1i h\u1ee3p qu\u1ed1c t\u1ebf tr\u1eeb \u0111i 7 ti\u1ebfng v\u00e0o th\u1eddi gian ban ng\u00e0y ng\u1eafn nh\u1ea5t c\u1ee7a m\u00f9a thu v\u00e0 m\u00f9a \u0111\u00f4ng. C\u00f2n trong kho\u1ea3ng th\u1eddi gian d\u00f9ng gi\u1edd ti\u1ebft ki\u1ec7m \u00e1nh s\u00e1ng ng\u00e0y cho c\u00e1c m\u00f9a xu\u00e2n, h\u00e8 v\u00e0 \u0111\u1ea7u m\u00f9a thu l\u00e0 tr\u1eeb \u0111i 6 gi\u1edd.\u00a0<\/span><\/p>\n

M\u00fai gi\u1edd n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c bang, c\u00e1c v\u00f9ng l\u00e3nh th\u1ed5 sau: Alberta, \u0111\u00f4ng nam v\u00e0 \u0111\u00f4ng b\u1eafc British Columbia, Northwest Territories. M\u1ed9t s\u1ed1 th\u00e0nh ph\u1ed1 Canada thu\u1ed9c m\u00fai gi\u1edd n\u00e0y \u0111\u00f3 l\u00e0:\u00a0 Edmonton v\u00e0 Calgary. Gi\u1edd n\u00e0y so v\u1edbi gi\u1edd Vi\u1ec7t Nam c\u00e1ch nhau 14 gi\u1edd v\u00e0o thu, \u0111\u00f4ng v\u00e0 13 gi\u1edd v\u00e0o m\u00f9a xu\u00e2n, h\u00e8.\u00a0\u00a0<\/span><\/p>\n

M\u00fai gi\u1edd Newfoundland (UTC -3:30)<\/strong><\/h4>\n

M\u00fai gi\u1edd Newfoundland \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch l\u1ea5y gi\u1edd UTC tr\u1eeb \u0111i 3 ti\u1ebfng r\u01b0\u1ee1i. N\u00f3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho t\u1ec9nh bang Newfoundland v\u00e0 Labrador. M\u1ed9t s\u1ed1 th\u00e0nh ph\u1ed1 thu\u1ed9c m\u00fai gi\u1edd n\u00e0y \u0111\u00f3 l\u00e0 th\u00e0nh ph\u1ed1 ST. Johnn\u2019s. Gi\u1edd Canada \u1edf c\u00e1c n\u01a1i n\u00e0y c\u00e1ch gi\u1edd Vi\u1ec7t Nam 10 gi\u1edd 30 ph\u00fat \u0111\u1ed3ng h\u1ed3.\u00a0<\/span><\/p>\n

5. M\u00fai gi\u1edd Vi\u1ec7t Nam so v\u1edbi m\u00fai gi\u1edd Trung Qu\u1ed1c<\/b><\/h3>\n

M\u1eb7c d\u00f9 c\u00f3 di\u1ec7n t\u00edch r\u1ed9ng l\u1edbn nh\u01b0ng Trung Qu\u1ed1c ch\u1ec9 c\u00f3 m\u1ed9t m\u00fai gi\u1edd duy nh\u1ea5t (l\u1ea5y gi\u1edd B\u1eafc Kinh l\u00e0m gi\u1edd ti\u00eau chu\u1ea9n). \u0110\u1ed1i v\u1edbi gi\u1eddi chu\u1ea9n Trung \u00c2u th\u00ec c\u1ed9ng th\u00eam 7 ti\u1ebfng, c\u00f2n trong m\u00f9a h\u00e8 th\u00ec c\u1ed9ng 6 ti\u1ebfng. M\u00fai gi\u1edd c\u1ee7a Trung Qu\u1ed1c s\u1ebd nha h\u01a1n Vi\u1ec7t Nam 1 ti\u1ebfng.\u00a0\u00a0<\/span><\/p>\n

6. M\u00fai gi\u1edd Vi\u1ec7t Nam so v\u1edbi m\u00fai gi\u1edd Nga<\/b><\/h3>\n

Tr\u01b0\u1edbc n\u0103m 2009, n\u01b0\u1edbc Nga c\u00f3 t\u1ed5ng c\u1ed9ng 11 m\u00fai gi\u1edd kh\u00e1c nhau. Nh\u01b0ng \u0111\u1ebfn nay n\u01b0\u1edbc n\u00e0y ch\u1ec9 c\u00f2n l\u1ea1i 9 m\u00fai gi\u1edd, chia l\u00e0m c\u00e1c v\u00f9ng nh\u01b0 sau:<\/span><\/p>\n