IANA tz database · zone identifier

America/Santiago

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

UTC-03:00Abbreviation -03Observes daylight saving
Time in America/Santiago☾ Night
20:01:20
Wednesday, October 14, 2026
Offset
UTC-03:00
Abbreviation
-03
DST
Active

Current offset

UTC-03:00

standard UTC-04:00 · daylight UTC-03:00

Abbreviation

-03

tzdb uses numeric abbreviations here

DST behaviour

Observes

changes clocks twice a year

Country

🇨🇱 Chile

ISO 3166: CL · view country page →

Using this identifier

The string to put in your code.

America/Santiago 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/Santiago',
dateStyle: 'full', timeStyle: 'long'
}).format(new Date());

Offset & DST behaviour

Two offsets,
every year.

America/Santiago alternates between -04 (UTC-04:00) and CLST (UTC-03:00). Right now it is on -03; clocks fall back on 3 April 2027.

The year at a glance

-04 · UTC-04:00CLST · UTC-03:006 Sept · +1h3 Apr · −1h Jan 2026 Dec

Technical record

The database entry, in full.

source: IANA tz database · release 2026d

IdentifierAmerica/Santiago
ISO country codeCL🇨🇱 Chile
Reference coordinates33.45°S, 70.67°Wtz database reference point
Standard offsetUTC-04:00abbreviation -04
Daylight offsetUTC-03:00abbreviation CLST
tzdb release2026ddata current as of this IANA release

Where it applies

One of Chile's 4 zones.

Looking for travel-friendly info? See Santiago or Chile Standard Time.

🇨🇱
Chile

19M people, 4 time zones — this identifier covers one of them.

Country page →
🇨🇱 Santiago
20:01
20:01:20 · -03
pop. 6.3MCLT
🇨🇱 Puente Alto
20:01
20:01:20 · -03
pop. 568KCLT
🇨🇱 Maipú
20:01
20:01:20 · -03
pop. 522KCLT

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/Santiago?
America/Santiago is currently UTC-03:00 (-03). It alternates between UTC-04:00 in winter and UTC-03:00 in summer.
Does America/Santiago observe daylight saving time?
Yes. Clocks fall back at the next transition on 3 April 2027, as they do twice every year.
Which country uses America/Santiago?
Chile. It is one of 4 IANA zones covering the country.
Is America/Santiago the same as CLT?
America/Santiago is one of the IANA zones that keeps Chile Standard Time (CLT). Use America/Santiago in software — CLT is a human-friendly label, not a valid identifier.

Free · Developer API

This zone, as JSON.

Its live offset, abbreviation, DST status and next clock change, 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/Santiago
{
"data": {
"iana": "America/Santiago",
"observes_dst": true,
"country": { "code": "CL", "name": "Chile" },
"current": {
"utc_offset": "-03:00",
"abbreviation": "-03",
…
},
…
}
}