UTC+08:00

Time in Indonesia
	Map of time zones of Indonesia
Western Indonesia Time (WIB) UTC offset	UTC+07:00 (WIB+0)
Central Indonesia Time (WITA) UTC offset	UTC+08:00 (WIB+1)
Eastern Indonesia Time (WIT) UTC offset	UTC+09:00 (WIB+2)
Adopted	1 January 1988
Time notation	24-hour clock
tz database	Asia/Jakarta · Asia/Pontianak · Asia/Makassar · Asia/Jayapura

UTC+08:00
UTC+08:00
Time zone
	World map with the time zone highlighted
UTC offset
UTC	UTC+08:00
Current time
	21:32, 18 October 2026 UTC+08:00 [refresh]
Central meridian
	120 degrees E
Date-time group
	H

UTC+08:00 is an identifier for a time offset from UTC of +08:00. In ISO 8601, the associated time would be written as 2026-10-18T21:32:39+08:00. It is eight hours ahead of UTC, meaning that when the time in UTC is midnight (00:00), the time in areas using the time zone would be 08:00.

It is the most populous time zone in the world, as well as a possible candidate for ASEAN Common Time, mainly due to China's large population, with an estimated population of 1.4 billion people.

This time zone is used in all predominantly Chinese-speaking regions, giving international Chinese websites and TV channels the same time.

The time zone is known as Central Indonesian Time (Indonesian: Waktu Indonesia Tengah/WITA) in Indonesia, Australian Western Standard Time in Australia, and Irkutsk Time (Russian: Иркутское время) or MSK+5 (Russian: МСК+5) in Russia.

As standard time (year-round)

Principal cities: Irkutsk, Ulan-Ude, Ulaanbaatar, Shanghai, Beijing, Guangzhou, Hangzhou, Suzhou, Xiamen, Shenzhen, Hong Kong, Macau, Taipei, Taichung, Kaohsiung, Kuala Lumpur, Singapore, Bandar Seri Begawan, Manila, Quezon City, Tanjung Selor, Balikpapan, Samarinda, Manado, Palu, Mamuju, Makassar, Kendari, Denpasar, Mataram, Maumere, Kupang, Perth.

North Asia

Russia – Irkutsk Time
- Far Eastern Federal District
  - Buryatia
- Siberian Federal District
  - Irkutsk Oblast

East Asia

China – Time in China
- All provinces, ARs, and municipalities – Beijing Time (China Standard Time)
- Hong Kong SAR – Hong Kong Time (Hong Kong Standard Time)
- Macau SAR – Macau Time (Macau Standard Time)

Mongolia – Time in Mongolia
- Eastern three-fourths of the country, including Dornod, Sükhbaatar, Ulaanbaatar
Taiwan – National Standard Time

Southeast Asia

Brunei – Brunei Darussalam Standard Time
Indonesia – Central Indonesia Time
- Parts of Kalimantan:
- Lesser Sunda Islands
- All provinces in Sulawesi
Malaysia – Malaysia Standard Time
Philippines – Philippine Standard Time
Singapore – Singapore Standard Time

Oceania

Australia
- Western Australia (except Eucla and nearby areas, including Caiguna, Cocklebiddy, Madura (WA) and Mundrabilla, all of which unofficially observe UTC+08:45)

Antarctica

Southern Ocean

Some bases in Antarctica. See also Time in Antarctica.
Australia
- Casey Station

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 outside UTC+08:00 longitudes using UTC+08:00 time

Areas between 127°30′ E and 142°30′ E ("physical" UTC+09:00)

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.

Areas between 97°30′ E and 112°30′ E ("physical" UTC+07:00)

Singapore
Malaysia:
- Western part of Sarawak in Malaysian Borneo.
- Peninsular Malaysia, where the nation's capital Kuala Lumpur is located.
Many parts of central China including:
- Hainan
- Guangxi
- Yunnan
- Guizhou
- Sichuan
- Chongqing
- Shaanxi
- Ningxia
- Gansu
- Western two-third of Hunan
- Western half of:
  - Hubei
  - Shanxi
  - Inner Mongolia, including its capital Hohhot.
- western third of:
  - Guangdong
  - Henan
Most of central Mongolia including the capital Ulaanbaatar.
In Russia, most of:
- Irkutsk Oblast
- Buryatia

Areas between 82°30′ E and 97°30′ E ("physical" UTC+06:00)

Parts of China
- Most of Xinjiang Uyghur Autonomous Region (although many locals set their clocks at UTC+06:00 even if it is officially UTC+08:00, in any case work and shop schedules are two hours after Shanghai and Beijing). See also Time in China.
- most of Tibet Autonomous Region
Western Mongolia.

Areas between 67°30′ E and 82°30′ E ("physical" UTC+05:00)

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 the official time zone. In addition, West Kalimantan and Central Kalimantan, which previously used this time zone, switched to UTC+07:00 (Western Indonesian Time), following Java and Sumatra.

References

↑ "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.
↑ "Forget daylight saving, this stretch of desert has its own strange little time zone". ABC News. 2019-04-08. Retrieved 2022-04-06.
↑ Ong, Tanya (31 July 2019). "S'pore is in the wrong time zone because we set our clocks 1 hour ahead". Mothership. Retrieved 4 April 2026.
↑ "Idea of common Asean time zone surfaced among region's ministers a decade ago". The Straits Times. 19 November 2025. Retrieved 4 April 2026. Going by geographic division of time zones around the world, Singapore falls within the GMT+7 region.
↑ 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.
↑ Isnanto, Bayu Ardi. "Jangan Salah! Zona Waktu di Kalimantan Bukan Cuma Wita". detikKalimantan (in Indonesian). Retrieved 14 May 2026.

External links

Media related to UTC+08:00 at Wikimedia Commons
History of Hong Kong Time Service Archived 2009-05-22 at the Wayback Machine

[wtzruss-1] "Russia Time Zone Map". WorldTimeZone.com. Retrieved 22 March 2018.

[2] "ULAT – Ulaanbaatar Time". Asian time zones. Time and Date. Retrieved 14 July 2012.

[ttind-3] "Indonesia Time Zones – Indonesia Current Time". TimeTemperature.com. Retrieved 27 October 2012.

[statind-4] Gwlliam Law. "Provinces of Indonesia". Statoids. Retrieved 27 October 2012.

[5] "Forget daylight saving, this stretch of desert has its own strange little time zone". ABC News. 2019-04-08. Retrieved 2022-04-06.

[sg_mothership-6] Ong, Tanya (31 July 2019). "S'pore is in the wrong time zone because we set our clocks 1 hour ahead". Mothership. Retrieved 4 April 2026.

[sg_st-7] "Idea of common Asean time zone surfaced among region's ministers a decade ago". The Straits Times. 19 November 2025. Retrieved 4 April 2026. Going by geographic division of time zones around the world, Singapore falls within the GMT+7 region.

[8] Bending Time in Xinjiang

[9] "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.

[10] Isnanto, Bayu Ardi. "Jangan Salah! Zona Waktu di Kalimantan Bukan Cuma Wita". detikKalimantan (in Indonesian). Retrieved 14 May 2026.

KALT	Kaliningrad Time	UTC+2	(MSK−1)
MSK	Moscow Time	UTC+3	(MSK±0)
SAMT	Samara Time	UTC+4	(MSK+1)
YEKT	Yekaterinburg Time	UTC+5	(MSK+2)
OMST	Omsk Time	UTC+6	(MSK+3)
KRAT	Krasnoyarsk Time	UTC+7	(MSK+4)
IRKT	Irkutsk Time	UTC+8	(MSK+5)
YAKT	Yakutsk Time	UTC+9	(MSK+6)
VLAT	Vladivostok Time	UTC+10	(MSK+7)
MAGT	Magadan Time	UTC+11	(MSK+8)
PETT	Kamchatka Time	UTC+12	(MSK+9)

Standard	DST	Zone
UTC+08:00 (year round)		Western Time
UTC+09:30 (year round)		Central Time
UTC+09:30	UTC+10:30	Central Time
UTC+10:00 (year round)		Eastern Time
UTC+10:00	UTC+11:00	Eastern Time
UTC+10:30	UTC+11:00	Lord Howe Island