Time in Indonesia

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Time in Indonesia:
  UTC+07:00 - Indonesia Western Standard Time (WST)
  UTC+08:00 - Indonesia Central Standard Time (CST)
  UTC+09:00 - Indonesia Eastern Standard Time (EST)
Neighboring countries:
  UTC+07:00 - Thailand
  UTC+08:00 - Brunei, Malaysia, Philippines, Singapore
  UTC+09:00 - East Timor
  UTC+09:30 - Central Australia
  UTC+10:00 - Papua New Guinea

The Indonesian archipelago geographically stretches across three 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: Indonesia Western Standard Time (WST)—seven hours in advance (UTC+7) of Greenwich Mean Time (GMT), Indonesia Central Standard Time (CST)— eight hours ahead (UTC+8) of GMT, and Indonesia Eastern Standard Time (EST)—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 due to its tropical location, resulting in each area using their respective time zone all year long.

Current usage[edit]

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

Indonesia Western Time[edit]

Indonesia Central Time[edit]

Indonesia Eastern Time[edit]

Historical usage[edit]

During the colonial era, the time in Indonesia (Dutch East Indies) was regulated as follows:

Single time zone proposal[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 definite 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]

External links[edit]