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Bonaire, Bonaire, Sint Eustatius And Saba

Bonaire uses Atlantic Standard Time, UTC−4, all year. The island does not observe daylight saving time, so Kralendijk, Rincon, and other localities keep a constant civil offset.

Kralendijk, Bonaire, Sint Eustatius And Saba

03:33:39

Friday, 4 September 2026

UTC−4 · America/Kralendijk

Time and sun data for Kralendijk — the largest city of Bonaire

The sun in Kralendijk

Sunrise 06:24 Solar noon 12:34 Sunset 18:43 Daylight 12 h 19 min Night 11 h 41 min Civil twilight 06:03 – 19:05

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Current time in Bonaire, Bonaire, Sint Eustatius And Saba

The island’s official clock is Atlantic Standard Time, abbreviated AST. It is four hours behind UTC. To translate a UTC timestamp into Bonaire time, subtract four hours and move to the previous date if the result passes midnight.

Bonaire does not move clocks forward or backward with the seasons. Do not let the word “Standard” suggest that a summer version follows later: AST remains in use throughout the year. The island’s difference from North American or European cities can still change when those places alter their own clocks.

For software, America/Kralendijk is the most specific IANA identifier. A fixed UTC−4 setting shows the correct offset, but a named zone better records that an event belongs to Bonaire. Island time may be a state of mind, but the UTC offset is admirably specific.

Kralendijk, Rincon, and the island clock

Kralendijk is Bonaire’s capital, principal port, and largest urban centre. It is the standard reference for current time, weather, sunrise, and transport schedules. Rincon is the island’s other longstanding town and follows exactly the same clock.

Smaller neighbourhoods and coastal areas do not introduce any time-zone change. For a meeting anywhere on Bonaire, one local time is enough. What may differ is the travel time to the site, not the displayed hour.

Named zone for devices: America/Kralendijk. Time-zone abbreviation: AST. Offset from UTC: minus four hours. Daylight-saving adjustment: none.

Sunrise on Bonaire

Sunrise changes gradually with the calendar and should be checked for the required date. Kralendijk is a good island-wide reference, but observers on different coasts may experience a slightly different visible sunrise because of their position and the local horizon.

Bonaire lies in the Caribbean at a low northern latitude, so day length varies less dramatically than it does far from the equator. Variation still exists, and a single sunrise value should not be reused indefinitely.

An astronomical listing assumes a standard horizon. Buildings, clouds, and raised terrain can affect when direct sunlight becomes visible. Civil twilight begins before sunrise and often answers the more practical question of when there is enough natural light to walk, drive, dive, sail, or photograph safely. Marine plans should also account for weather and sea conditions, which a sunrise table does not describe.

Questions and answers

What time zone does Bonaire use?: Bonaire uses Atlantic Standard Time, or AST, at UTC−4.
Does Bonaire change clocks for summer?: No. Its official offset remains the same throughout the year.
Is Kralendijk time different from Rincon time?: No. Both towns, and the entire island, follow the same clock.