ASEAN Common Time

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The ASEAN Common Time (ACT) is a proposal to adopt a standard time for all Association of Southeast Asian Nations member states.[1][2]

Currently, there are four different time zones used by ASEAN countries, such as UTC+06:30 (Myanmar); UTC+07:00 (Cambodia, Laos, Thailand, Vietnam, and western Indonesia); UTC+08:00 (Singapore, Malaysia, Brunei, Philippines, and central Indonesia); and UTC+09:00 (eastern Indonesia). The proposal would institute UTC+08:00 as the ASEAN Central Time, putting Myanmar at UTC+07:00, and leaving less populous eastern Indonesia at UTC+09:00[citation needed]. This would result in the vast majority of the region's people and territory lining up at UTC+08:00—in sync with China, Hong Kong, Macau, Taiwan, and Western Australia, while eastern islands of Indonesia would remain at UTC+09:00—in sync with Japan, South Korea, North Korea, East Timor and Palau.

Some regional businesses have already begun adopting the phrase "ASEAN Common Time", also using the abbreviation ACT, in their press releases, communications, and legal documents. The idea has since been under discussion by ASEAN, with Singapore supporting it strongly. [3]


ASEAN relation Country UTC offset Acronym
[citation needed]
Notes Ref
ASEAN member  Myanmar +06:30 MST Some experts suggest that moving to UTC+07:00, rather than UTC+08:00, would be a more natural change. Myanmar Standard Time
ASEAN member  Thailand +07:00 ICT Tried unsuccessfully to switch to UTC+08:00 in 2001 by then-Prime Minister Thaksin Shinawatra. Issue remains under discussion. Time in Thailand
ASEAN member  Laos Time in Laos
ASEAN member  Vietnam From 1975-06-13 after reunification Time in Vietnam
ASEAN member  Cambodia Time in Cambodia
ASEAN member  Indonesia +07:00
A single national time zone of UTC+08:00 has been proposed, however it is unclear when or if it may be implemented. [4] Time in Indonesia
ASEAN member  Singapore +08:00 SST From 1982-01-01 Singapore Standard Time
ASEAN member  Malaysia MYT Peninsular Malaysia switched from UTC+07:30 on 1982-01-01, and East Malaysia uses it since 1933, except for the Japanese Occupation during World War Two. Time in Malaysia
ASEAN member  Brunei BNT Time in Brunei
ASEAN member  Philippines PST Philippine Standard Time
ASEAN observer  Timor-Leste +09:00 TLT Time in Timor-Leste
ASEAN observer  Papua New Guinea +10:00 PGT Time in Papua New Guinea
ASEAN Plus Three  Japan +09:00 JST Japan Standard Time
ASEAN Plus Three  South Korea KST Time in South Korea
ASEAN Plus Three  People's Republic of China +08:00 CST Time in China

External links[edit]

  • "Press Statement The First Informal ASEAN Heads of Government Meeting Jakarta". 30 November 1996. Archived from the original (Press release) on 14 February 2006.
  • "Joint Communique of The 29th ASEAN Ministerial Meeting (AMM) Jakarta, 1996-07-20/21". Archived from the original on 8 January 2006.
  • Abdullah Ahmad Badawi (7 August 2004). "Towards an ASEAN Community". Archived from the original (speech) on 1 June 2013.

See also[edit]


  1. ^ "Association of Southeast Asian Nations · ASEAN Anthem". Archived from the original on 1 June 2013. Retrieved 12 October 2013.
  2. ^ "The Nation - Google News Archive Search". Retrieved 25 February 2019.
  3. ^ [1]
  4. ^ "Hatta : Penyatuan Zona Waktu Tidak Batal". (in Indonesian). Retrieved 2 February 2017.