Time zone · Antarctic
CASEYT
Casey Time
Casey Time (UTC+08:00) is the clock at Casey Station, an Australian research base in Antarctica. It has no daylight saving time, but the station has switched between UTC+08:00 and UTC+11:00 many times since 2009, most recently returning to UTC+08:00 in March 2023.
Thursday, October 15, 2026
Current offset
UTC+08:00
Standard · +08
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About CASEYT
A fixed, year-round offset.
Casey Time (UTC+08:00) is the clock at Casey Station, an Australian research base in Antarctica. It has no daylight saving time, but the station has switched between UTC+08:00 and UTC+11:00 many times since 2009, most recently returning to UTC+08:00 in March 2023.
IANA zones · the technical identifiers
The zone that resolve to CASEYT.
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 CASEYT is used
One country.
Same offset · UTC+08:00
Other zones at UTC+08:00 right now.
These named zones share CASEYT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
CASEYT to the world's clocks.
Frequently asked questions
Common questions about CASEYT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Does Casey Time observe daylight saving?
- No, Casey Time has no daylight saving time. The station has changed between UTC+08:00 and UTC+11:00 several times since 2009, though, most recently returning to UTC+08:00 in March 2023.
- Why doesn’t Casey Time use daylight saving?
- Due to the extreme seasonal light variation at polar regions like Antarctica, daylight saving offers little benefit and is not needed.
- Is Casey Time used outside of Antarctica?
- No. Casey Time is used only at Casey Station. Its UTC+08:00 offset is the same as Perth in Western Australia.
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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