IANA tz database · zone identifier

America/St_Johns

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

UTC-02:30Abbreviation NDTObserves daylight saving
Time in America/St_Johns☾ Night
20:28:38
Wednesday, July 15, 2026
Offset
UTC-02:30
Abbreviation
NDT
DST
Active

Current offset

UTC-02:30

standard UTC-03:30 · daylight UTC-02:30

Abbreviation

NDT

the daylight-saving form

DST behaviour

Observes

changes clocks twice a year

Country

🇨🇦 Canada

ISO 3166: CA · view country page →

Using this identifier

The string to put in your code.

America/St_Johns 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 NDT or -02:30 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

Two offsets,
every year.

America/St_Johns alternates between NST (UTC-03:30) and NDT (UTC-02:30). Right now it is on NDT; clocks fall back on 1 November 2026.

The year at a glance

NST · UTC-03:30NDT · UTC-02:30NST · UTC-03:308 Mar · +1h1 Nov · −1h Jan 2026 Dec

Technical record

The database entry, in full.

source: IANA tz database

IdentifierAmerica/St_Johns
ISO country codeCA🇨🇦 Canada
Reference coordinates47.57°N, 52.72°Wtz database reference point
Standard offsetUTC-03:30abbreviation NST
Daylight offsetUTC-02:30abbreviation NDT

Where it applies

One of Canada's 23 zones.

🇨🇦
Canada

37M people, 23 time zones — this identifier covers one of them.

Country page →

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/St_Johns?
America/St_Johns is currently UTC-02:30 (NDT). It alternates between UTC-03:30 in winter and UTC-02:30 in summer.
Does America/St_Johns observe daylight saving time?
Yes. Clocks fall back at the next transition on 1 November 2026, as they do twice every year.
Which country uses America/St_Johns?
Canada. It is one of 23 IANA zones covering the country.
Is America/St_Johns the same as NST?
America/St_Johns is one of the IANA zones that keeps Newfoundland Standard Time (NST). Use America/St_Johns in software — NST 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/St_Johns
{
"iana": "America/St_Johns",
"utc_offset": "-02:30",
"abbreviation": "NDT",
"observes_dst": true,
"country": "CA"
}