IANA tz database · zone identifier

America/Cayenne

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

UTC-03:00Abbreviation -03No daylight saving
Time in America/Cayenne☾ Night
20:00:05
Wednesday, October 14, 2026
Offset
UTC-03:00
Abbreviation
-03
DST
No DST

Current offset

UTC-03:00

same year-round

Abbreviation

-03

tzdb uses numeric abbreviations here

DST behaviour

None

one offset all year

Country

🇬🇫 French Guiana

ISO 3166: GF · view country page →

Using this identifier

The string to put in your code.

America/Cayenne 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 -03 or -03:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

One offset,
59 years.

America/Cayenne has kept UTC-03:00 year-round since 1 October 1967 — 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

−03:29:20UTC-03:00 · UNCHANGED 1 October 1967 NOW

Keeping this offset since

1 October 1967

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC − 3h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database · release 2026d

IdentifierAmerica/Cayenne
ISO country codeGF🇬🇫 French Guiana
Reference coordinates4.93°N, 52.33°Wtz database reference point
Standard offsetUTC-03:00abbreviation -03
Daylight offset—no daylight saving time
tzdb release2026ddata current as of this IANA release

Where it applies

All of French Guiana, one clock.

Looking for travel-friendly info? See Cayenne or French Guiana Time.

🇬🇫
French Guiana

294K people, one time zone. The whole country resolves to America/Cayenne.

Country page →
🇬🇫 Cayenne
20:00
20:00:05 · -03
pop. 63KGFT

Related identifiers

Nearby in the database.

Same offset · UTC-03:00

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 America/Cayenne?
America/Cayenne is UTC-03:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does America/Cayenne observe daylight saving time?
No. America/Cayenne stays on UTC-03:00 all year, as it has since 1 October 1967.
Which country uses America/Cayenne?
French Guiana. The identifier covers the whole country.
Is America/Cayenne the same as GFT?
America/Cayenne is one of the IANA zones that keeps French Guiana Time (GFT). Use America/Cayenne in software — GFT is a human-friendly label, not a valid identifier.

Free · Developer API

This zone, as JSON.

Its live offset, abbreviation and DST status, plus its coordinates and country, from one endpoint.

GET /v1/timezones Live

Also in the API: time zones by coordinates, conversions that flag daylight saving gaps, and abbreviations decoded.

Get your free API key → All endpoints Plans and pricing

Moving off WorldTimeAPI? Our drop-in replacement needs no key.

// this identifier, resolved live
GET /v1/timezones/America/Cayenne
{
"data": {
"iana": "America/Cayenne",
"observes_dst": false,
"country": { "code": "GF", "name": "French Guiana" },
"current": {
"utc_offset": "-03:00",
"abbreviation": "-03",
…
},
…
}
}