Technical Specifications & Standards
Official chronometric properties, ISO standards, and international database registry identifiers for French Southern and Antarctic Time:
Daylight Saving Time (DST) Transitions
⬆️ Spring Forward (Clocks Advance)
None
⬇️ Fall Back (Clocks Return)
None
Observing Jurisdictions & Subdivisions
1 Sovereign NationsSovereign nations, administrative subdivisions, and regional territories officially operating under TFT:
Regional Subdivisions & Territory Details
Financial Markets & Trading Hours
Oversees Patagonian toothfish and spiny lobster sustainable fisheries, marine nature reserves, and CNES satellite tracking in the subantarctic.
Local Hours: 08:00 - 16:30 TFT
UTC Window: 03:00 - 11:30 UTC
Major Cities in TFT
Primary metropolitan centers and financial hubs observing this time zone:
Adoption History & Astronomical Facts
Year Established: 1950
Established under French overseas territorial administration, standardizing the Kerguelen archipelago and Crozet Islands on UTC+5.
The Kerguelen Islands, also known as the Desolation Islands, are among the most isolated places on Earth, situated over 3,300 km from Madagascar and 4,800 km from Australia on TFT.
Frequently Asked Questions about TFT
What is French Southern and Antarctic Time?
French Southern and Antarctic Time (TFT) is UTC+5, observed in the subantarctic French islands.
What islands observe TFT?
The Kerguelen Islands, Crozet Islands, and Saint Paul and Amsterdam Islands observe TFT.
Does TFT observe daylight saving?
No. The territory stays on UTC+5 all year.