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|18:29, 17 January 2022 UTC+08:00|
|120 degrees E|
With an estimated population of 1.708 billion living within the time zone, roughly 24% of the world population, it is the most populous time zone in the world, as well as a possible candidate for ASEAN Common Time.
This time zone is used in all predominantly Chinese-speaking regions, giving international Chinese websites and TV channels the same time.
In Indonesia, it is known as Central Indonesian Time (Indonesian: Waktu Indonesia Tengah / WITA) while in Western Australia, it is known as Australian Western Standard Time.
As standard time (year-round)
- Russia – Irkutsk Time
- Mainland China – China Standard Time
- Hong Kong – Hong Kong Time (Hong Kong Standard Time)
- Macau – Macau Time (Macau Standard Time)
- Mongolia – Time in Mongolia
- Taiwan – National Standard Time
- Brunei – Brunei Darussalam Standard Time
- Indonesia – Central Indonesia Time
- Malaysia – Malaysia Standard Time
- Philippines – Philippine Standard Time
- Singapore – Singapore Standard Time
Discrepancies between official UTC+08:00 and geographical UTC+08:00
This section is only partly updated for longitudes using other time zones. This concerns areas within 112°30′ E to 127°30′ E longitude.
- Parts of Russia, including very easternmost parts of Krasnoyarsk Krai, where UTC+07:00 is used, and Zabaykalsky Krai and most of western Sakha Republic where UTC+09:00 is used.
- Parts of Indonesia, including eastern East Java with its capital city Surabaya, most of Central Kalimantan with its capital city Palangka Raya, and eastern part of West Kalimantan, where UTC+07:00 is used, and some of the western islands in the province of Maluku and North Maluku where UTC+09:00 is used.
- East Timor, where UTC+09:00 is used.
- Parts of Okinawa Prefecture, Japan, including Sakishima Islands with its westernmost point Yonaguni, western parts of Kerama Islands, and some islands of the western Okinawa Islands, where UTC+09:00 is used.
- The western parts of Korea, including the North Korean capital city, Pyongyang and South Korean capital city, Seoul, where UTC+09:00 is used.
Areas located outside UTC+08:00 longitudes using UTC+08:00 time
- Parts of northeast China including the eastern half of Heilongjiang Province and the Yanbian Korean Autonomous Prefecture in Jilin Province.
- Easternmost parts of Western Australia.
From south to north:
- Many parts of central China including:
- Most of central Mongolia including the capital Ulaanbaatar.
- In Russia, most of:
- Parts of China
- Western Mongolia.
- Parts of western China including western Xinjiang province (Kashgar) (although most locals observe UTC+06:00 even if it is officially UTC+08:00).
Historical time offsets
The southern half of Vietnam (Republic of Vietnam) was formerly part of this time zone prior to the national reunification on 30 April 1975, making it one hour ahead of North Vietnam. After 1975, the whole country came under the North Vietnamese time zone, UTC+07:00.
According to Presidential Decree 41/1987, Indonesia's ex-province of Timor Timur used this time zone with neighboring East Nusa Tenggara and other provinces in Lesser Sunda Islands, parts of Kalimantan and Sulawesi until independence as East Timor, which the country changed to UTC+09:00 as official time zone.
- ASEAN Common Time
- Hong Kong Time
- Philippine Standard Time
- Singapore Standard Time
- Time in Australia
- Time in Brunei
- Time in Cambodia
- Time in China
- Time in Indonesia
- Time in Laos
- Time in Malaysia
- Time in Mongolia
- Time in Russia
- Time in Taiwan
- Time in Vietnam
- "Russia Time Zone Map". WorldTimeZone.com. Retrieved 22 March 2018.
- "ULAT – Ulaanbaatar Time". Asian time zones. Time and Date. Retrieved 14 July 2012.
- "Indonesia Time Zones – Indonesia Current Time". TimeTemperature.com. Retrieved 27 October 2012.
- Gwlliam Law. "Provinces of Indonesia". Statoids. Retrieved 27 October 2012.
- Bending Time in Xinjiang
- "KEPPRES No. 41 Tahun 1987 tentang Pembagian Wilayah Republik Indonesia Menjadi 3 (Tiga) Wilayah Waktu [JDIH BPK RI]". peraturan.bpk.go.id. Retrieved 8 October 2021.