Time zone · Oceania
CCT
Cocos Islands Time
Cocos Islands Time (CCT) is a unique time zone set at UTC+06:30, making it one of the few half-hour offsets in the world. The remote Cocos (Keeling) Islands use this time year-round, with no daylight saving changes, keeping things simple for residents and travelers alike.
Thursday, October 15, 2026
Current offset
UTC+06:30
Standard · +0630
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About CCT
A fixed, year-round offset.
Cocos Islands Time (CCT) is a unique time zone set at UTC+06:30, making it one of the few half-hour offsets in the world. The remote Cocos (Keeling) Islands use this time year-round, with no daylight saving changes, keeping things simple for residents and travelers alike.
IANA zones · the technical identifiers
The zone that resolve to CCT.
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 across CCT
Local time, city by city.
1 city
Where CCT is used
One country.
Same offset · UTC+06:30
Other zones at UTC+06:30 right now.
These named zones share CCT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
CCT to the world's clocks.
Frequently asked questions
Common questions about CCT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- What is the abbreviation for Cocos Islands Time?
- Cocos Islands Time is usually abbreviated CCT. The time zone database writes it as +0630.
- How many zones observe Cocos Islands Time?
- CCT has only one member zone, corresponding to the Cocos (Keeling) Islands.
- Does Cocos Islands Time observe daylight saving time?
- No, CCT does not observe daylight saving time; the offset remains constant at UTC+06:30 throughout the year.
- What makes Cocos Islands Time unique?
- Its UTC+06:30 offset is rare, as most time zones differ by full hours; this half-hour difference is found in only a few regions worldwide.
- Which country uses Cocos Islands Time?
- Only the Cocos (Keeling) Islands, an Australian external territory in the Indian Ocean, use Cocos Islands Time. Myanmar uses the same UTC+06:30 offset under its own name.
- What is the local time history for Cocos Islands Time?
- The current offset has been consistently used since January 1, 1900, making it one of the most stable time zones globally.
- What are the neighboring time zones to Cocos Islands Time?
- Its nearest neighbours, Australia’s Christmas Island and western Indonesia (including Java and Sumatra), use UTC+07:00, 30 minutes ahead of the Cocos Islands.
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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