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Gilbert Islands, Kiribati

The Gilbert Islands use Gilbert Island Time, UTC+12, throughout the year. South Tarawa and the other islands share this official offset, while sunrise varies by atoll, island and date.

Tarawa, Kiribati

Friday, 4 September 2026

UTC+12 · Pacific/Tarawa

Time and sun data for Tarawa — the largest city of Gilbert Islands

The sun in Tarawa

Sunrise 06:25 Solar noon 12:29 Sunset 18:33 Daylight 12 h 08 min Night 11 h 52 min Civil twilight 06:04 – 18:54

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Current time in Gilbert Islands, Kiribati

Gilbert Island Time is abbreviated GILT and stands twelve hours ahead of UTC. When it is midnight at the UTC reference point, the civil time in the Gilbert Islands is noon on the same date. The islands do not use daylight saving time, so UTC+12 remains the governing offset year-round. This zone applies to the Gilbert group, but not to every part of Kiribati: the country’s Phoenix and Line island groups use later offsets.

Kiribati fits several clocks into one country; “island time” is therefore a location, not an excuse.

South Tarawa and settlements in the Gilbert group

South Tarawa is Kiribati’s principal urban area and the most common reference for time in the Gilbert Islands. Betio, Bairiki and Bikenibeu are important parts of the South Tarawa area. Other populated atolls in the group include Abaiang, Abemama, Butaritari and Tabiteuea.

These places share UTC+12, despite being spread across separate islands and atolls. Moving within the Gilbert group therefore does not normally require a clock change. South Tarawa is the main population and government centre.

Betio, Bairiki and Bikenibeu keep Gilbert Island Time. Outer islands in the group also use UTC+12. A journey to another Kiribati island group may require a time adjustment. For travel documents, write the island or island group as well as “Kiribati.” The country name alone does not identify a single UTC offset.

Understanding sunrise across the atolls

Sunrise depends on the observer’s coordinates and the calendar date. Atolls in the Gilbert group extend across a considerable north-to-south and east-to-west range, so South Tarawa’s sunrise listing should not be treated as exact for every outer island.

Use a local island entry whenever one is available. This is particularly helpful for inter-island travel, fishing departures, outdoor work and photography, where a small difference in morning light may matter.

The calculated time describes the Sun reaching the astronomical horizon. Cloud banks and the observer’s immediate surroundings can change when the Sun is first seen. They do not change the official sunrise calculation or the civil clock.

Dates and time conversion

To convert Gilbert Island Time to UTC, subtract twelve hours. The arithmetic is simple, but the date deserves attention because morning in the Gilbert Islands commonly corresponds to the previous UTC date.

Identify the island group before converting. Label the local time as GILT or UTC+12. Subtract twelve hours to obtain UTC. Apply the destination offset and verify its calendar date. Do not substitute the offset for the Line Islands or Phoenix Islands. They are part of the same country but maintain different local times.

Questions and answers

What time zone do the Gilbert Islands use?
They use Gilbert Island Time, abbreviated GILT, at UTC+12.
Is South Tarawa on daylight saving time?
No. South Tarawa remains on UTC+12 throughout the year.
Does all of Kiribati share the Gilbert Islands’ time?
No. Kiribati has three island-group time zones, and the Phoenix and Line islands are ahead of the Gilbert group.
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