Time in Indonesia

Last updated
Time in Indonesia
Map of time zones of Indonesia
Current time across Indonesia
Western Indonesia Time
6:42 am, 4 June 2023 [refresh]
Central Indonesia Time
7:42 am, 4 June 2023 [refresh]
Eastern Indonesia Time
8:42 am, 4 June 2023 [refresh]

The Indonesian Archipelago geographically stretches across four time zones from UTC+06:00 in Aceh to UTC+09:00 in Papua. However, the Indonesian government recognises only three time zones in its territory, namely:


The boundary between the Western and Central time zones was established as a line running north between Java and Bali through the provincial boundaries of West and Central Kalimantan. The border between the Central and Eastern time zones runs north from the eastern tip of Indonesian Timor to the eastern tip of Sulawesi.

Daylight saving time (DST) is no longer observed anywhere in Indonesia.

Current usage

Indonesia is divided into three time zones:

name in
current time
area coveredpopulation [1]
Western Indonesia TimeWaktu Indonesia Barat06:42, 4 June 2023 WIB [refresh] UTC+07:00 WIB+/-0h Sumatra (consists of Aceh, Bengkulu, Jambi, Lampung, North Sumatra, Riau, South Sumatra, and West Sumatra), Riau Islands, Bangka Belitung Islands, Java (consists of Banten, Jakarta, West Java, Central Java, Special Region of Yogyakarta, and East Java), West Kalimantan and Central Kalimantan 218,212,832
Central Indonesia TimeWaktu Indonesia Tengah07:42, 4 June 2023 WITA [refresh] UTC+08:00 WIB+1h South Kalimantan, East Kalimantan, North Kalimantan, Nusantara, Sulawesi (consists of North Sulawesi, Gorontalo Central Sulawesi, West Sulawesi, South Sulawesi and Southeast Sulawesi), Bali, West Nusa Tenggara and East Nusa Tenggara 43,401,450
Eastern Indonesia TimeWaktu Indonesia Timur08:42, 4 June 2023 WIT [refresh] UTC+09:00 WIB+2h Maluku, North Maluku, Central Papua, Highland Papua, South Papua, Southwest Papua, West Papua and Papua 8,569,635

These time zones have existed in their present form since 1 January 1988. [2]

The history of time divisions

Early timekeeping

The first regulation of time was implemented in 1908 at the request of the Staatsspoorwegen Dutch railway company in Java during the time of the Dutch East Indies. The time in Central Java was set at 12 minutes later than the capital, Batavia, which used GMT +7 hours.. This regulation, which came into effect on 1 May 1908, applied only to Java and Madura. Time in the rest of the archipelago remained unregulated. [3] [4]

Ten years later, on 22 February 1918, time in Padang, Sumatra was set at 39 minutes ahead of Central Java, while time in Palembang was set at 8 hours and 20 minutes ahead of Greenwich Mean Time. Then, on 1 January 1924, times for various locations were set as follows: [3] [4]

Central Java GMT +7:20
Tapanoeli Residency Central Java -45 minutes
Padang Central Java -7 minutes
Bali and Lombok Central Java +22 minutes
Makassar Central Java +38 minutes

Standardised Time Zones

In 1932, the Dutch colonial government through a Governments Besluit dated 27 July published in Staatsblad No. 412, divided the entire colony into six time zones separated by 30 minutes as follows:

time zonein Dutch UTC
Northern Sumatra TimeNord-Sumatra tijd UTC+06:30 Aceh, Padang, and Medan.
Southern Sumatra TimeZuid-Sumatra tijd UTC+07:00 Bengkulu, Palembang, and Lampung.
Java TimeJava tijd UTC+07:30 Java, Bali, Madura and Kalimantan.
Celebes TimeCelebes tijd UTC+08:00 Sulawesi and Lesser Sunda Islands.
Moluccan TimeMolukken tijd UTC+08:30 Ternate, Namlea, Ambon, and Banda.
New GuineaNieuw-Guinea tijd UTC+09:00 West Irian. Observed from1 November 1932 to 31 August 1944. [5]
Dutch New Guinea TimeNederlandse Nieuw-Guinea tijd UTC+09:30 West Irian, then still named Dutch New Guinea was still controlled by the Dutch. Observed from 1 September 1944 to 31 December 1963. [6]

During the Japanese occupation of the Dutch East Indies, from 27 March 1942 to 24 September 1945, both western and central parts of Indonesia used Japan Standard Time (JST) (UTC+09:00) for the sake of the effectiveness of Japanese military operations in Indonesia. [7] [4]

Timezones post-independence

The time zones in effect from 1932-1942 and 1950-1963 Indonesia 6 time zones.png
The time zones in effect from 1932-1942 and 1950-1963

When the Dutch returned in 1945, they reimposed three time zones (GMT +6, +7 and +8), with a separate GMT +9 time zone for Dutch New Guinea. Following Dutch recognition of Indonesian sovereignty, a presidential regulation came into effect on 1 May 1950 once again dividing the country into six time zones separated by half an hour. Then, on 1 January 1964, another presidential decree came into effect, imposing the current system of three time zones. The final change came on 1 January 1988 when Bali was moved out of the West Indonesia time zone in to the Central Indonesia timezone, and West and Central Kalimantan were transferred from Central to West Indonesian Time. [2] [3]

Proposal for a single time zone

On 12 March 2012, Coordinating Minister for the Economy Hatta Rajasa said: "According to research, with a single time zone the country could cut costs by trillions of rupiah." [8] Two months later, the Jakarta Post reported that a single time zone using UTC+08:00 may start on 28 October 2012. [9] However in August, the Jakarta Globe reported that the plan was now on hold. [10] The Indonesian Economic Development Committee (KP3EI) cited that they will need at least 3 months to communicate and plan for the change. Hence this could happen in 2013. In January 2013, a deputy minister said the idea had been abandoned after missed two target dates: 17 August (Independence day) and 28 October 2012 (Youth Pledge day). [11] Later that year, Hatta claimed that the plan had not been abandoned, although there was no deadline for implementation. [12]

IANA time zone database

The IANA time zone database contains four zones for Indonesia in the file zone.tab. [13]

See also


  1. Statistics Indonesia 2020.
  2. 1 2 BAPPENAS 1987, p. 2.
  3. 1 2 3 Hendaru Tri Hanggoro 2021.
  4. 1 2 3 vivi.co.id 2023.
  5. tiamanddate.com nd.
  6. "Time Zone in Jayapura, Papua, Indonesia". timeanddate.com. Retrieved 9 April 2016.
  7. Post et al. 2023, pp. 50, 614.
  8. Jakarta Post 2012a.
  9. Jakarta Post 2012b.
  10. Tito Summa Siahaan 2012.
  11. Iwan Kurniawan & Raden Jihad Akbar 2013.
  12. Okzone 2013.
  13. IANA 2023.

Related Research Articles

<span class="mw-page-title-main">Proclamation of Indonesian Independence</span> 1945 Indonesian independence document

The Proclamation of Indonesian Independence was read at 10:00 on Friday, 17 August 1945 in Jakarta. The declaration marked the start of the diplomatic and armed resistance of the Indonesian National Revolution, fighting against the forces of the Netherlands and pro-Dutch civilians, until the latter officially acknowledged Indonesia's independence in 1949. The document was signed by Sukarno and Mohammad Hatta, who were appointed president and vice-president respectively the following day.

<span class="mw-page-title-main">UTC+08:00</span> Identifier for a time offset from UTC of +8

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

<span class="mw-page-title-main">UTC+07:00</span> Identifier for a time offset from UTC of +7 hours

UTC+07:00 is an identifier for a time offset from UTC of +07:00. In ISO 8601 the associated time would be written as 2023-06-04T08:20:14+07:00. It is 7 hours ahead of UTC, meaning that when the time in UTC areas is midnight (00:00), the time in UTC+07:00 areas would be 7:00 in the morning.

<span class="mw-page-title-main">Prime Minister of Indonesia</span> Position in Indonesia

The position of Prime Minister of Indonesia existed from 1945 until 1966. During this period, the prime minister was in charge of the Cabinet of Indonesia, one of the three branches of government along with the People's Representative Council and the president. Following his 1959 decree, President Sukarno assumed the role and powers of prime minister until his resignation in 1966.

The ASEAN Common Time (ACT) is a proposal to adopt a standard time for all Association of Southeast Asian Nations member states. It was proposed in 1995 by Singapore, and in 2004 and 2015 by Malaysia to make business across countries easier. The proposal failed because of opposition in Thailand and Cambodia: Thais and Cambodians argued that UTC+08:00 was not really better than UTC+07:00, which is their current time zone.

<span class="mw-page-title-main">Investigating Committee for Preparatory Work for Independence</span> Japanese sponsored organization in Indonesia

The Investigating Committee for Preparatory Work for Independence, sometimes referred to as the Investigating Committee for Preparatory Work for Indonesian Independence, was an organization set up in March 1945 by the Japanese military authority in Java during the Japanese occupation of the Dutch East Indies as the initial stage of the establishment of independence for the area under the control of the Japanese 16th Army. The BPUPK held two plenary meetings; the first was from 28 May to 1 June 1945 and the second was between 10 and 17 July 1945.

<span class="mw-page-title-main">Karawang Regency</span> Regency in West Java, Indonesia

Karawang Regency is a regency (kabupaten) of West Java, Indonesia. The town of Karawang is its administrative centre. The regency covers an area of 1,911.09 km2 and had a population of 2,127,791 people at the 2010 Census, which grew to 2,361,019 at the 2020 Census. The official estimate for mid 2022 was 2,505,247 for a density of 1,310.9 people per km2. The regency borders Bekasi and Bogor regencies in the west, the Java Sea in the north, Subang Regency in the east, Purwakarta Regency in the southeast, and Cianjur Regency in the south. The regency lies on the eastern outskirts of Metropolitan Jakarta, just outside the Jabodetabek region, and is the site of industrial activity.

<span class="mw-page-title-main">Soenario</span> Indonesian politician and diplomat (1902–1997)

Soenario Sastrowardoyo, more commonly known simply as Soenario, was an Indonesian politician, and diplomat, who served as the 7th Foreign Minister of Indonesia, from 1953 until 1955, during the First Ali Sastroamidjojo cabinet, under Prime Minister Ali Sastroamidjojo. He was one of Indonesia's leading figures during the Indonesian independence movement and served as an administrator for the Perhimpoenan Indonesia association in the Netherlands.

<span class="mw-page-title-main">Ismail Marzuki</span> Indonesian composer of patriotic songs

Ismail Marzuki was an Indonesian composer, songwriter and musician who wrote around 202 to 240 songs between 1931 and 1958, including numerous popular patriotic songs. Among his best-known works are "Halo, Halo Bandung", "Gugur Bunga", and "Rayuan Pulau Kelapa". In 1968, he was honoured with the creation of the well-known Taman Ismail Marzuki which is a cultural centre in Menteng in central Jakarta. In 2004 he was declared one of the National Heroes of Indonesia.

<span class="mw-page-title-main">Sixteenth Army (Japan)</span> Military unit

The Japanese 16th Army was an army of the Imperial Japanese Army during World War II.

<span class="mw-page-title-main">Malino Conference</span>

The Malino Conference was organised by the Dutch in the Sulawesi town of Malino from 16 to 25 July 1946 as part of their attempt to arrange a federal solution for Indonesia. From the end of World War II, Indonesian Republicans had been trying to secure Indonesian Independence from the Dutch colonial control.

<span class="mw-page-title-main">History of Bali</span>

The History of Bali covers a period from the Paleolithic to the present, and is characterized by migrations of people and cultures from other parts of Asia. In the 16th century, the history of Bali started to be marked by Western influence with the arrival of Europeans, to become, after a long and difficult colonial period under the Dutch, an example of the preservation of traditional cultures and a key tourist destination.

<span class="mw-page-title-main">Soeprapto (governor)</span> Indonesian politician (1924–2009)

Raden Soeprapto was an Indonesian military figure and politician who served as the 8th Governor of Jakarta from 29 September 1982 until 6 October 1987.

<span class="mw-page-title-main">Madiun Regency</span> Regency of Indonesia

Madiun Regency is a landlocked Regency in East Java province, Indonesia. It covers an area of 1,010.86 km2, and had a population of 662,278 at the 2010 Census and 744,350 at the 2020 Census. It is bordered by Bojonegoro Regency in the north, Nganjuk Regency in the east, Ponorogo Regency in the south, and Magetan Regency and Ngawi Regency in the west, while the city of Madiun is an enclave within the regency.

<span class="mw-page-title-main">Ratna Asmara</span> Indonesian actress and director (1913–1968)

Ratna Asmara, also known as Ratna Suska, was an Indonesian actress and director. Originally active in theatre, in 1940 she starred in the romance film Kartinah, which her first husband Andjar directed.

<span class="mw-page-title-main">Pancasila Building</span> Historic building in Jakarta, Indonesia

The Pancasila Building is a historic building located in Central Jakarta, Indonesia. The name "Pancasila" refers to the speech delivered by Sukarno in the building on which he spoke about the concept of Pancasila, a philosophical concept which would be the foundation of the Indonesian nation, on June 1, 1945. Built in the early 1830s, the building is one of the many 19th-century colonial landmarks in Jakarta. The Pancasila Building currently belongs to and is under the preservation of the Indonesian Ministry of Foreign Affairs.

<span class="mw-page-title-main">Perum DAMRI</span> Transport enterprise of Indonesia

DAMRI Public Corporation is an Indonesian state-owned bus operator. Under further development as a public company, the name DAMRI is still used as a brand mark of this state-owned company that still carries out passenger and cargo transport using buses and trucks.

The following is an order of battle of the Indonesian National Armed Forces as of 8 January 1946, after the then People's Security Armed Forces was transformed into the People's Safety Armed Forces by Presidential Resolution #2/1946.

<span class="mw-page-title-main">Pancasila (politics)</span> Indonesian political philosophy

Pancasila is the official, foundational philosophical theory of Indonesia. The name is made from two words originally derived from Sanskrit: "pañca" ("five") and "śīla".