IANA tz database · zone identifier

Indian/Kerguelen

The IANA tz database identifier for French Southern & Antarctic Time in French Southern and Antarctic Lands. Store this string — not the abbreviation, not the offset — and your timestamps stay correct forever.

UTC+05:00Abbreviation +05No DST — never observed
Time in Indian/Kerguelen☾ Night
03:59:54
Thursday, July 16, 2026
Offset
UTC+05:00
Abbreviation
+05
DST
No DST

Current offset

UTC+05:00

same year-round

Abbreviation

+05

tzdb uses numeric abbreviations here

DST behaviour

Never

has never observed daylight saving

Country

🇹🇫 French Southern and Antarctic Lands

ISO 3166: TF · view country page →

Using this identifier

The string to put in your code.

Indian/Kerguelen is the identifier to use in code and config for this region. Every modern language, database, and OS resolves it through the same tz database, so the examples here behave identically everywhere.

Avoid storing +05 or +05:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

// format a date in this zone
new Intl.DateTimeFormat('en-US', {
timeZone: 'Indian/Kerguelen',
dateStyle: 'full', timeStyle: 'long'
}).format(new Date());

Offset & DST behaviour

One offset,
76 years.

Indian/Kerguelen has kept UTC+05:00 year-round since 1 January 1950 — no daylight saving and no offset changes on record since. It is among the most stable identifiers in the database.

Every offset this zone has kept

+04:40:52UTC+05:00 · UNCHANGED 1 January 1950 NOW

Keeping this offset since

1 January 1950

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC + 5h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database

IdentifierIndian/Kerguelen
ISO country codeTF🇹🇫 French Southern and Antarctic Lands
Reference coordinates49.35°S, 70.22°Etz database reference point
Standard offsetUTC+05:00abbreviation +05
Daylight offset—daylight saving has never been observed

Where it applies

All of French Southern and Antarctic Lands, one clock.

Looking for travel-friendly info? See Port-aux-Français or French Southern & Antarctic Time.

🇹🇫
French Southern and Antarctic Lands

196 people, one time zone. The whole country resolves to Indian/Kerguelen.

Country page →
🇹🇫 Port-aux-Français
03:59
03:59:54 · +05
pop. 45FSAT

Related identifiers

Nearby in the database.

Same offset · UTC+05:00

other zones keeping this offset right now

Frequently asked questions

Answers specific to this identifier — generated from the database record. Can't find what you need? Email [email protected].

What UTC offset is Indian/Kerguelen?
Indian/Kerguelen is UTC+05:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does Indian/Kerguelen observe daylight saving time?
No. Indian/Kerguelen has never observed DST — it has kept UTC+05:00 continuously since 1 January 1950.
Which country uses Indian/Kerguelen?
French Southern and Antarctic Lands. The identifier covers the whole country.
Is Indian/Kerguelen the same as FSAT?
Indian/Kerguelen is one of the IANA zones that keeps French Southern & Antarctic Time (FSAT). Use Indian/Kerguelen in software — FSAT is a human-friendly label, not a valid identifier.

Free · Developer API

This zone, as JSON.

Everything on this page — offset, abbreviation, DST rules, coordinates — from one endpoint, always current with the latest tzdb release.

GET /v1/timezones Live

countries, cities, convert, DST transitions coming next.

Get your free API key →
// this identifier, resolved live
GET /v1/timezones?iana=Indian/Kerguelen
{
"iana": "Indian/Kerguelen",
"utc_offset": "+05:00",
"abbreviation": "+05",
"observes_dst": false,
"country": "TF"
}