Time zone · Antarctic
FSAT
French Southern & Antarctic Time
French Southern & Antarctic Time (UTC+05:00) is the time used at Port-aux-Français, the research base on the Kerguelen Islands. It has no daylight saving and has stayed on UTC+05:00 since the base opened in 1950.
Thursday, October 15, 2026
Current offset
UTC+05:00
Standard · +05
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About FSAT
A fixed, year-round offset.
French Southern & Antarctic Time (UTC+05:00) is the time used at Port-aux-Français, the research base on the Kerguelen Islands. It has no daylight saving and has stayed on UTC+05:00 since the base opened in 1950.
IANA zones · the technical identifiers
The zone that resolve to FSAT.
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 FSAT
Local time, city by city.
1 city
Where FSAT is used
One country.
Same offset · UTC+05:00
Other zones at UTC+05:00 right now.
These named zones share FSAT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
FSAT to the world's clocks.
Frequently asked questions
Common questions about FSAT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Why doesn't FSAT have any daylight saving?
- With only rotating research staff and no permanent civilian population, there's simply no practical reason to shift clocks; operations run on mission schedules, not seasonal light cycles.
- Is FSAT tied to a specific city or coordinate?
- It is based on Port-aux-Français, the research station on the Kerguelen Islands in the southern Indian Ocean, at about 49°21′S.
- Does FSAT ever change historically?
- No. Kerguelen had no permanent base until Port-aux-Français opened in 1950, and it has used UTC+05:00 ever since.
- Are there any time zones similar to FSAT?
- Its UTC+05:00 offset is shared all year by Pakistan, Uzbekistan and the Maldives, so Kerguelen shows the same time as Karachi, Tashkent or Malé.
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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