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Time in Vietnam

From Wikipedia, the free encyclopedia

Reunified Vietnam follows Indochina Time (ICT), which is seven hours ahead of UTC, ICT is used all year round as Vietnam does not observe daylight saving time. Vietnam shares the same time zone with Thailand, Cambodia, Christmas Island, Laos, and Western Indonesia.

Vietnam referenced ISO 8601 under in 1998 and then created its own standard TCVN 6398-1:1998.[1]


Time in French Indochina

Period in use Time offset from GMT Notes
Prior to 1 July 1906 UTC+07:06:40 Local mean time
1 July 1906 – 30 April 1911 UTC+07:06:30 106°37'30"E French Time
1 May 1911 – 30 December 1942 UTC+07:00 Standard Time Zone
31 December 1942 – 13 March 1945 UTC+08:00 Standard Time Zone
14 March 1945 – 1 September 1945 UTC+09:00 Tokyo Standard Time
2 September 1945 – Activation of Geneva Accords UTC+07:00 Standard Time Zone

Time in North Vietnam

Period in use Time offset from GMT Notes
2 September 1945 – 31 March 1947 UTC+07:00 Hanoi Time Zone
1 April 1947 – Activation of Geneva Accords
After the activation
No Standard Time
UTC+07:00 for zone under peace
UTC+08:00 for zone under attacking
1 January 1968 – 12 June 1975 UTC+07:00 Hanoi Time Zone

Time in South Vietnam

Period in use Time offset from GMT Notes
Activation of Geneva Accords – 30 June 1955 UTC+08:00 Saigon Standard Time
1 July 1955 – 31 December 1959 UTC+07:00 Saigon Standard Time
1 January 1960 – 12 June 1975 UTC+08:00 Saigon Standard Time

Time in Reunified Vietnam

Period in use Time offset from GMT Notes
13 June 1975 – now UTC+07:00 Standard Time Zone

See also


  1. ^ "TCVN-6398-1-1998-Dai-luong-va-don-vi-Khong-gian-va-thoi-gian – bản lưu trữ". Retrieved 24 March 2019.


  • Trần Tiến Bình (2005), Lịch Việt Nam thế kỷ XX-XXI (1901–2100), Nhà xuất bản Văn hoá Thông tin, Hanoi.
This page was last edited on 30 April 2022, at 09:09
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