Time in Indonesia

Current usage

In Indonesia, the keeping of standard time is divided into three time zones:

• Indonesia Western Time (Indonesian: Waktu Indonesia Barat/WIB) (UTC+07:00)
  • 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"
• Indonesia Central Time (Waktu Indonesia Tengah/WITA) (UTC+08:00)
  • 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"
• Indonesia Eastern Time (Waktu Indonesia Timur/WIT) (UTC+09:00).
  • 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"

Single time zone proposal

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 2012-05-26 that a single time zone using UTC+08:00 may start on 2012-10-28. [2]
2012-07-30	Reported on 2012-07-30 as still on the agenda Indonesia to implement single time zone
2012-08-31	Jakarta Globe reported on 2012-08-31 that a single time zone is now put on hold. [3] 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) [4]
2013-02-09	Then the minister said that it's not abandoned, only without any definite date [5]