IANA tz database · zone identifier

America/Guayaquil

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

UTC-05:00Abbreviation -05No DST — never observed
Time in America/Guayaquil☾ Night
18:00:03
Wednesday, July 15, 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

🇪🇨 Ecuador

ISO 3166: EC · view country page →

Using this identifier

The string to put in your code.

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

Offset & DST behaviour

One offset,
33 years.

America/Guayaquil has kept UTC-05:00 year-round since 4 February 1993 — 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

−05:19:20UTC-05:00 · UNCHANGED 4 February 1993 NOW

Keeping this offset since

4 February 1993

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

IdentifierAmerica/Guayaquil
ISO country codeEC🇪🇨 Ecuador
Reference coordinates2.17°S, 79.83°Wtz database reference point
Standard offsetUTC-05:00abbreviation -05
Daylight offset—daylight saving has never been observed

Where it applies

One of Ecuador's 2 zones.

Looking for travel-friendly info? See Guayaquil or Ecuador Time.

🇪🇨
Ecuador

17M people, 2 time zones — this identifier covers one of them.

Country page →
🇪🇨 Guayaquil
18:00
18:00:03 · -05
pop. 2.7MECUADO
🇪🇨 Quito
18:00
18:00:03 · -05
pop. 1.8MECUADO
🇪🇨 Cuenca
18:00
18:00:03 · -05
pop. 362KECUADO

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 America/Guayaquil?
America/Guayaquil is UTC-05:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does America/Guayaquil observe daylight saving time?
No. America/Guayaquil has never observed DST — it has kept UTC-05:00 continuously since 4 February 1993.
Which country uses America/Guayaquil?
Ecuador. It is one of 2 IANA zones covering the country.
Is America/Guayaquil the same as ECUADO?
America/Guayaquil is one of the IANA zones that keeps Ecuador Time (ECUADO). Use America/Guayaquil in software — ECUADO 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/Guayaquil
{
"iana": "America/Guayaquil",
"utc_offset": "-05:00",
"abbreviation": "-05",
"observes_dst": false,
"country": "EC"
}