IANA tz database · zone identifier

America/Guyana

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

UTC-04:00Abbreviation -04No DST — never observed
Time in America/Guyana☾ Night
18:59:56
Wednesday, July 15, 2026
Offset
UTC-04:00
Abbreviation
-04
DST
No DST

Current offset

UTC-04:00

same year-round

Abbreviation

-04

tzdb uses numeric abbreviations here

DST behaviour

Never

has never observed daylight saving

Country

🇬🇾 Guyana

ISO 3166: GY · view country page →

Using this identifier

The string to put in your code.

America/Guyana 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 -04 or -04:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

One offset,
34 years.

America/Guyana has kept UTC-04:00 year-round since 29 March 1992 — 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

−03:52:40UTC-04:00 · UNCHANGED 29 March 1992 NOW

Keeping this offset since

29 March 1992

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC − 4h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database

IdentifierAmerica/Guyana
ISO country codeGY🇬🇾 Guyana
Reference coordinates6.80°N, 58.17°Wtz database reference point
Standard offsetUTC-04:00abbreviation -04
Daylight offset—daylight saving has never been observed

Where it applies

All of Guyana, one clock.

Looking for travel-friendly info? See Georgetown or Guyana Time.

🇬🇾
Guyana

879K people, one time zone. The whole country resolves to America/Guyana.

Country page →
🇬🇾 Georgetown
18:59
18:59:56 · -04
pop. 235KGUYANA

Related identifiers

Nearby in the database.

Same offset · UTC-04:00

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/Guyana?
America/Guyana is UTC-04:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does America/Guyana observe daylight saving time?
No. America/Guyana has never observed DST — it has kept UTC-04:00 continuously since 29 March 1992.
Which country uses America/Guyana?
Guyana. The identifier covers the whole country.
Is America/Guyana the same as GUYANA?
America/Guyana is one of the IANA zones that keeps Guyana Time (GUYANA). Use America/Guyana in software — GUYANA 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=America/Guyana
{
"iana": "America/Guyana",
"utc_offset": "-04:00",
"abbreviation": "-04",
"observes_dst": false,
"country": "GY"
}