The Indonesian archipelago geographically stretches across four time zones from UTC+7 in Banda Aceh to UTC+9 in Western Papua. However, The Indonesian government only recognizes three time zones in its territory: Western Indonesian Time—seven hours in advance (UTC+7) of Greenwich Mean Time (GMT), Central Indonesian Time— eight hours ahead (UTC+8) of GMT, and Eastern Indonesian Time—nine hours ahead (UTC+9) of GMT. The boundary between the western and central time zones established is a line running north between Java and Bali through the center of Kalimantan. The border between central and eastern time zones runs north from the eastern tip of Timor to the eastern tip of Sulawesi.
Daylight saving time is never observed in Indonesia, resulting in each area using their respective time zone all year long.
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Current usage [edit]
In Indonesia, the keeping of standard time is divided into three time zones:
- Western Indonesian Time (Indonesian: Waktu Indonesia Barat/WIB) (UTC+07:00) (Now:22:10)
- WIB is observed in:
- All provinces in the island of Sumatra and its surrounding islands including major cities such as: Batam, Palembang, Medan.
- All provinces in the island of Java including major cities such as: Bandung, Surabaya, Jabodetabek/Jakarta, and Yogyakarta.
- Two provinces in Kalimantan island: West Kalimantan and Central Kalimantan. Including major cities such as: Pontianak, Palangkaraya, and Sampit.
- IANA time zone database identifiers are "Asia/Jakarta" and "Asia/Pontianak"
- WIB is observed in:
- Central Indonesian Time (Waktu Indonesia Tengah/WITA) (UTC+08:00) (Now:23:10)
- WITA is observed in:
- All provinces in the island of Sulawesi including major cities such as: Makassar, Manado, and Gorontalo.
- All provinces in the Lesser Sunda Islands including major cities such as: Denpasar, Mataram, and Kupang.
- Two provinces in Kalimantan island: East Kalimantan and South Kalimantan. Including major cities such as: Balikpapan, Banjarmasin, and Tarakan.
- IANA time zone database identifier is "Asia/Makassar"
- WITA is observed in:
- Eastern Indonesian Time (Waktu Indonesia Timur/WIT) (UTC+09:00). (Now:00:10)
- WIT is observed in:
- Maluku Islands including major cities such as: Ambon, Maluku, Ternate City, and Tidore.
- All provinces in West Papua including major cities such as: Jayapura, Biak, and Merauke.
- All provinces in Papua including all major islands in the province.
- IANA time zone database identifier is "Asia/Jayapura"
- WIT is observed in:
Historical usage [edit]
Earlier usages of zone names have been due to wartime issues, and earlier colonial measures.[citation needed] Singapore's historical time zone issues also show some aspects of the Indonesian context.[citation needed]
- Western Indonesian Time (WIT) was known as Jakarta Standard Time.
- Central Indonesian Time (CIT) was known as Bali Standard Time (BST).
- Eastern Indonesian Time (EIT) was known as Jayapura Time.
Single time zone [edit]
| Date | Event |
|---|---|
| 2012-03-12 | Coordinating Minister for the Economy Hatta Rajasa is reported to have said: “According to research, with a single time zone the country could cut costs by trillions of rupiah,” [1] |
| 2012-05-26 | The Jakarta Post reported on 26 May 2012 that a single time zone using UTC+08:00 may start on Oct 28, 2012. [2] |
| 2012-07-30 | Reported on 30 July 2012 as still on the agenda[3] |
| 2012-08-31 | Jakarta Globe reported on 31 August 2012 that a single time zone is now put on hold. [4] 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. |
| 2013-01-30 | A deputy minister said the idea has been abandoned after missed two target dates: 17 August (Independence day) and 28 October 2012 (Youth Pledge day) [5] |
| 2013-02-09 | Then the minister said that it's not abandoned, only without any target date [6] |
IANA time zone database [edit]
The IANA time zone database contains four zones for Indonesia in the file zone.tab.
See also [edit]
Notes [edit]
- ^ http://www.thejakartapost.com/news/2012/03/12/trillions-dollars-could-be-saved-with-single-time-zone-govt.html
- ^ http://www.thejakartapost.com/news/2012/05/26/single-time-zone-may-begin-late-october.html
- ^ Indonesia to implement single time zone
- ^ http://www.thejakartaglobe.com/home/clock-stops-on-indonesias-unified-time-zone/541352
- ^ http://bisnis.news.viva.co.id/news/read/386333-penyatuan-zona-waktu-indonesia-batal
- ^ http://economy.okezone.com/read/2013/02/09/320/759298/hatta-penyatuan-zona-waktu-tidak-batal
External links [edit]
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