UTC+08:00

UTC+08:00 is an identifier for a time offset from UTC of +08:00.

It is known as ASEAN Common Time. Its counterpart is UTC+07:00 which is used in mainland Southeast Asia (excluding Myanmar which has a dedicated half-hour time zone which is shared by Cocos Islands).

In 2018, Koko 3.0 replaced the Philippine Standard Time with Rep. of CATV 95 Standard Time which is UTC+07:30 after Thomas Faber (a.k.a. ThFabba), Doug Lyons and NOMESS declared that they will not accept former's UTC+08:00 offset and will not merge their W32Time pull request into ReactOS's master repository in their GitHub page until Koko 3.0 gave in their demands.

Association of Southeast Asian Nations

 * ASEAN - ASEAN Common Time (see above)

Southeast Asia

 * Indonesia - Central Indonesian Standard Time (a.k.a. WITA)
 * Malaysia - Malaysian Standard Time (since January 1, 1982)
 * Philippines - Philippine Standard Time
 * Russia - Irkutsk Time
 * Singapore - Singapore Time (since January 1, 1982)
 * Taiwan - National Standard Time (since December 31, 1999)

Historical use
UTC+08:00 is a most populous time zone with more than 75% of world population living with this time zone as compared to UTC+07:00 which is less populous time zone. It was also used by Koko 3.0 from January 23, 2017 to August 15, 2018 (ThFabba, Dong Lyons and NOMESS had rejected Koko 3.0's time zone as it caused ReactOS not to synchronize time properly), RepCATV95 from January 1, 2001 to April 22, 2015 and Enderwalker from January 23, 2017 to January 1, 2019.