Time zone · Asia
ETT
East Timor Time
East Timor TimeETTimor-Leste and is 9 hours ahead of Coordinated Universal Time. It is geographically close, yet notably ahead of, Japan Standard Time and, more broadly, East Asia. Since adopting this offset in 2000, it has remained stable all year with no seasonal clock changes.
Saturday, June 6, 2026
Current offset
UTC+09:00
Standard · +09
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About ETT
A fixed, year-round offset.
East Timor TimeETTimor-Leste and is 9 hours ahead of Coordinated Universal Time. It is geographically close, yet notably ahead of, Japan Standard Time and, more broadly, East Asia. Since adopting this offset in 2000, it has remained stable all year with no seasonal clock changes.
IANA zones · the technical identifiers
The zone that resolve to ETT.
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.
Cities currently on ETT
The same hour, city by city.
1 city · all UTC+09:00
Where ETT is used
One country.
Same offset · UTC+09:00
Other zones at UTC+09:00 right now.
These named zones share ETT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Frequently asked questions
Common questions about ETT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- How does East Timor Time compare with neighboring Indonesia?
- Timor-Leste sits next to Eastern parts of Indonesia, but its timekeeping is simpler:ITTimor-Leste) is consistently hour more than Central Indonesia Time like Jakarta and Bali), while Eastern Indonesian time often called "="Eastern IndonesiaUTCUTC+09:00.
- Does East Timor observe daylight saving time?
- No. Timor-Leste has never observed daylight saving time. The clocks stay on the same 9 UTCUTC+09:00 year-round, so there are no spring‑forward or fall‑back changes.
- When did East Timor adopt UTC+09:00?
- Timor-Leste adopted UTC+09:00 in 2000 as part of establishing a stable national time standard. Since then, its offset has remained virtually unchanged, making it easy to calculate time differences.
- Is East Timor Time used outside Timor-Leste?
- No.East Timor Time is used exclusively by Timor-Leste. It is represented by the single zone AsiaDili/DiliAsia/DiliTC region code and is shared by no other countries.
- What is a practical side effect of no daylight saving for teams?
- Because the offset never changes, you can reliably treat East Timor+09:00 difference relative to UTCit as a constant. Meetings scheduled in "ETT" stay at all year—no DST surprises to reconfirm.
- How can you easily spot this region in the IANA Time Zone Database?
- Look for Asia under "/"Dili". The zone entry typically carries the identifier AsiaTimorTimor-Leste. It is the sole representative of East Timor Timecode ETT ETC region.
- Are there any recent proposals to change East Timor's time zone?
- There have been no widely reported proposals towitching to daylight saving or shifting the UTC+09:00 offset. Public focus in the database and regional planning remains on maintaining current stability. stabilitycurrent stability.
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