IANA tz database · zone identifier

Antarctica/Troll

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

UTC+02:00Abbreviation +02Observes daylight saving
Time in Antarctica/Troll☾ Night
00:59:53
Thursday, July 16, 2026
Offset
UTC+02:00
Abbreviation
+02
DST
Active

Current offset

UTC+02:00

standard UTC+00:00 · daylight UTC+02:00

Abbreviation

+02

tzdb uses numeric abbreviations here

DST behaviour

Observes

changes clocks twice a year

Country

🇦🇶 Antarctica

ISO 3166: AQ · view country page →

Using this identifier

The string to put in your code.

Antarctica/Troll 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 +02 or +02:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

Two offsets,
every year.

Antarctica/Troll alternates between +00 (UTC+00:00) and TST (UTC+02:00). Right now it is on +02; clocks fall back on 25 October 2026.

The year at a glance

+00 · UTC+00:00TST · UTC+02:00+00 · UTC+00:0029 Mar · +1h25 Oct · −1h Jan 2026 Dec

Technical record

The database entry, in full.

source: IANA tz database

IdentifierAntarctica/Troll
ISO country codeAQ🇦🇶 Antarctica
Reference coordinates72.01°S, 2.53°Etz database reference point
Standard offsetUTC+00:00abbreviation +00
Daylight offsetUTC+02:00abbreviation TST

Where it applies

One of Antarctica's 10 zones.

🇦🇶
Antarctica

5K people, 10 time zones — this identifier covers one of them.

Country page →

Related identifiers

Nearby in the database.

Same zone group · Greenwich Mean Time

other identifiers keeping GMT

Same offset · UTC+02:00

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 Antarctica/Troll?
Antarctica/Troll is currently UTC+02:00 (+02). It alternates between UTC+00:00 in winter and UTC+02:00 in summer.
Does Antarctica/Troll 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 Antarctica/Troll?
Antarctica. It is one of 10 IANA zones covering the country.
Is Antarctica/Troll the same as GMT?
Antarctica/Troll is one of the IANA zones that keeps Greenwich Mean Time (GMT). Use Antarctica/Troll in software — GMT 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=Antarctica/Troll
{
"iana": "Antarctica/Troll",
"utc_offset": "+02:00",
"abbreviation": "+02",
"observes_dst": true,
"country": "AQ"
}