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Central Java, Indonesia

Central Java follows Western Indonesia Time in every city and regency. Semarang, Surakarta, and the province’s other communities share Jakarta’s clock, while sunrise varies by date and location across Java’s northern coast, interior highlands, and southern districts.

Semarang, Indonesia

Friday, 4 September 2026

UTC+7 · Asia/Jakarta

Time and sun data for Semarang — the largest city of Central Java

The sun in Semarang

Sunrise 05:39 Solar noon 11:39 Sunset 17:39 Daylight 12 h 00 min Night 12 h 00 min Civil twilight 05:18 – 18:00

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Current time in Central Java, Indonesia

Central Java uses Western Indonesia Time, known as WIB, with a UTC+7 offset. There is no daylight saving time, so the provincial clock maintains a constant relationship to UTC through every season. Jakarta and Central Java show the same local hour. Bali does not: Bali uses Central Indonesia Time and is one hour ahead. This distinction is useful when arranging onward travel or remote meetings across Indonesia.

Phones connected to a mobile network normally select the local zone automatically, but an itinerary should still state the zone when participants are in different provinces. The word “Central” in the province’s name does not mean Central Indonesia Time.

Central Java is geographically central on Java, but its clock firmly belongs to Western Indonesia Time.

Semarang, Surakarta, and other major centres

Semarang is the provincial capital and a major city on the north coast. Surakarta, also widely called Solo, is another important urban and cultural centre. Both use WIB, as do inland and coastal communities across the province.

Semarang serves as the capital of Central Java. Surakarta is a major city in the province’s southeastern interior. Pekalongan is an urban centre on the northern coast. Tegal is another city in the western part of the north-coast corridor.

Magelang is an inland city surrounded by Magelang Regency. Purwokerto is also a significant urban centre, although administratively it lies within Banyumas Regency rather than forming a separate city government. That distinction can matter in address searches, but it has no effect on local time.

Sunrise between coasts, plains, and volcanoes

Central Java’s varied landscape makes location important when interpreting sunrise. Longitude changes the calculated astronomical time, while mountains and other terrain influence when direct sunlight becomes visible. A person in a valley may see the sun after the formal sunrise minute.

Sunrise also shifts during the year. Therefore, a time remembered from a previous visit or copied from a different date should not be used for a precise departure, prayer-related planning, an outdoor event, or photography.

Choose the exact city or coordinates rather than only the province. Check the date and ensure the result is displayed in WIB. Review dawn times if the activity begins before sunrise. Account for terrain, cloud, transport, and walking time.

A north-coast result for Semarang will not perfectly match an inland location near the central highlands or a southern district. For casual planning the nearest city may suffice; for exact work, use the destination itself.

Questions and answers

Does Central Java use Central Indonesia Time?
No. Despite its name, the province uses Western Indonesia Time, or WIB.
Are Semarang and Surakarta on the same time?
Yes. Both cities observe UTC+7.
Is Bali ahead of Central Java?
Yes. Bali’s WITA clock is one hour ahead of Central Java’s WIB clock.
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