IANA tz database · zone identifier

Europe/Dublin

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

UTC+01:00Abbreviation ISTObserves daylight saving
Time in Europe/Dublin☾ Night
00:03:24
Thursday, October 15, 2026
Offset
UTC+01:00
Abbreviation
IST
DST
Active

Current offset

UTC+01:00

standard UTC+00:00 · daylight UTC+01:00

Abbreviation

IST

the daylight-saving form

DST behaviour

Observes

changes clocks twice a year

Country

🇮🇪 Ireland

ISO 3166: IE · view country page →

Using this identifier

The string to put in your code.

Europe/Dublin 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 IST or +01:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

Two offsets,
every year.

Europe/Dublin alternates between GMT (UTC+00:00) and IST (UTC+01:00). Right now it is on IST; clocks fall back on 25 October 2026.

The year at a glance

GMT · UTC+00:00IST · UTC+01:00GMT · UTC+00:0029 Mar · +1h25 Oct · −1h Jan 2026 Dec

Technical record

The database entry, in full.

source: IANA tz database · release 2026d

IdentifierEurope/Dublin
ISO country codeIE🇮🇪 Ireland
Reference coordinates53.33°N, 6.25°Wtz database reference point
Standard offsetUTC+00:00abbreviation GMT
Daylight offsetUTC+01:00abbreviation IST
tzdb release2026ddata current as of this IANA release

Where it applies

All of Ireland, one clock.

Looking for travel-friendly info? See Dublin or Greenwich Mean Time.

🇮🇪
Ireland

5.1M people, one time zone. The whole country resolves to Europe/Dublin.

Country page →
🇮🇪 Dublin
00:03
00:03:24 · IST
pop. 593KGMT

Related identifiers

Nearby in the database.

Same zone group · Greenwich Mean Time

other identifiers keeping GMT

Same offset · UTC+01:00

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 Europe/Dublin?
Europe/Dublin is currently UTC+01:00 (IST). It alternates between UTC+00:00 in winter and UTC+01:00 in summer.
Does Europe/Dublin observe daylight saving time?
Yes. Clocks fall back at the next transition on 25 October 2026, as they do twice every year.
Which country uses Europe/Dublin?
Ireland. The identifier covers the whole country.
Is Europe/Dublin the same as GMT?
Europe/Dublin is one of the IANA zones that keeps Greenwich Mean Time (GMT). Use Europe/Dublin in software — GMT 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/Europe/Dublin
{
"data": {
"iana": "Europe/Dublin",
"observes_dst": true,
"country": { "code": "IE", "name": "Ireland" },
"current": {
"utc_offset": "+01:00",
"abbreviation": "IST",
…
},
…
}
}