Time Zones| Zone areas | Time now | January 2026 | July 2026 | Largest cities |
|---|---|---|---|---|
| Jakarta, Pontianak | --:-- | UTC+7 | UTC+7 | Jakarta, Surabaya, Bekasi, Bandung |
| Makassar | --:-- | UTC+8 | UTC+8 | Makassar, Samarinda, Balikpapan, Denpasar |
| Jayapura | --:-- | UTC+9 | UTC+9 | Jayapura, Ambon, Sorong, Ternate |
How many times does Indonesia have?
The IANA database lists 4 separate zone areas for Indonesia. Grouped by the time they actually show through 2026, that makes 3 different clocks, listed above. The offsets in use run from UTC+7 to UTC+9 in January.
None of them changes its clocks during the year.
Planning across the country
When you fix a call or a broadcast for people in several parts of Indonesia, give the time with its zone, or use the converter to show every zone at once.
Where most people are
Measured by the people living in towns of 15,000 or more (GeoNames figures), the busiest clock in Indonesia is the one kept in Jakarta, UTC+7 in January: about 70 million people, or 82% of the total across all the zone areas. Next comes the clock of Makassar (UTC+8) with about 12 million.
A worked example
When it is 9:00 am in Jakarta in January, it is 10:00 am in Makassar, 11:00 am in Jayapura.
The widest gap inside the country
The two clocks that are farthest apart differ by 2 hours in January, and by the same amount in July. On the map, the main cities run from Jakarta at about 106.8° east to Jayapura at about 140.7° east. By the sun alone those two are about 2 hours 15 minutes apart.
The sun across Indonesia
Clocks are set by law, but the sun keeps its own time. In Jakarta, the most westerly of the main cities (about 106.8° east), the sun is highest at about 11:53 am by the clock in January. In Jayapura, the most easterly (about 140.7° east), it is highest at about 11:37 am. The closer that figure is to 12:00, the better the clock fits the daylight in that city. From north to south the length of the day differs too: around 21 June the sun is up for about 12 hours 7 minutes in Pontianak and about 11 hours 46 minutes in Jakarta.
Indonesia and the rest of the world
When it is 12:00 noon in Jakarta, it is 10:30 am in India; 5:00 am in London in January and 6:00 am in July; 12:00 am in New York in January and 1:00 am in July. Other parts of Indonesia are earlier or later than that by the amounts in the table at the top of this page.