Civil Time AtlasIANA time zone data

Historically distinct IANA time zone

Asia/Pontianak

Canonical IANA identifier · Data release 2026c

Local time now WIB · current offset
Countries
Indonesia
GPS reference
0.03° S, 109.33° E
Data source
IANA asia
Aliases
None

Borneo (west, central)

Geographic context

Where this clock belongs

The map marks the IANA reference location and associated country, not a time-zone boundary.

World location
Regional context

GPS reference: 0.03° S, 109.33° E. Associated countries: ID.

The Wikipedia link provides additional context; it is not evidence for a historical claim. Transition data comes from the IANA source file.

A shared present

These nearby zones follow the same current annual pattern, yet retain their own historical record.

Civil-time record

Recorded changes over time

From 1908 to 1987 · 8 recorded transitions

Recurring daylight-saving changes are grouped separately when JavaScript is available.

Notable changes

One-off changes and transitions outside the recurring seasonal rhythm.

  1. +07:17 · PMTStandard time applies
  2. +07:30 · +0730Standard time applies
  3. +09:00 · +09Standard time applies
  4. +07:30 · +0730Standard time applies
  5. +08:00 · +08Standard time applies
  6. +07:30 · +0730Standard time applies
Browse every recorded transition
Local time after transitionOffset afterAbbreviationRule
1908-05-01 00:00+07:17PMTStandard time
1932-11-01 00:12+07:30+0730Standard time
1942-01-29 01:30+09:00+09Standard time
1945-09-22 22:30+07:30+0730Standard time
1948-05-01 00:30+08:00+08Standard time
1950-04-30 23:30+07:30+0730Standard time
1964-01-01 00:30+08:00WITAStandard time
1987-12-31 23:00+07:00WIBStandard time