Time zone · Oceania
BOUGAI
Bougainville Time
Bougainville runs a single, no-nonsense UTC+11 clock that never shifts for daylight saving. The region, part of Papua New Guinea, has kept UTC+11:00 since 28 December 2014, one hour ahead of the rest of the country.
Thursday, October 15, 2026
Current offset
UTC+11:00
Standard · +11
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About BOUGAI
A fixed, year-round offset.
Bougainville runs a single, no-nonsense UTC+11 clock that never shifts for daylight saving. The region, part of Papua New Guinea, has kept UTC+11:00 since 28 December 2014, one hour ahead of the rest of the country.
IANA zones · the technical identifiers
The zone that resolve to BOUGAI.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Where BOUGAI is used
One country.
Same offset · UTC+11:00
Other zones at UTC+11:00 right now.
These named zones share BOUGAI's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
BOUGAI to the world's clocks.
Frequently asked questions
Common questions about BOUGAI, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- What time zone does Bougainville use?
- The entire Autonomous Region of Bougainville runs on the single offset of UTC+11:00.
- Does Bougainville observe daylight saving time?
- No, Bougainville does not observe daylight saving time and has no scheduled clock changes.
- Why is Bougainville’s time so stable?
- Because Bougainville sits close to the equator with no daylight saving policy, its UTC+11 offset has remained unchanged for years.
- When did Bougainville settle on UTC+11?
- Bougainville has been on UTC+11:00 since 28 December 2014, when it moved one hour ahead of the rest of Papua New Guinea, which stays on UTC+10:00.
- How hard is it to coordinate with partners in Bougainville?
- Bougainville’s fixed UTC+11 makes scheduling predictable, though large offsets can still mean late-night or early-morning calls with Europe and the Americas.
- Who uses Bougainville Time outside the region?
- No one. Bougainville Time is used only in the Autonomous Region of Bougainville. Other places, such as the Solomon Islands and New Caledonia, share the UTC+11:00 offset under their own names.
- Can I count on Bougainville’s time for APIs?
- Yes, standard libraries model Pacific/Bougainville as a permanent UTC+11 with no daylight transitions, so it reliably stays in sync for software.
Source: IANA tzdb2026d · Reviewed
Free · Developer API
This time zone, as JSON.
Its defining offset, DST status and member counts, from one endpoint.
Also in the API: time zones by coordinates, conversions that flag daylight saving gaps, and abbreviations decoded.
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