IANA tz database · zone identifier

America/Nassau

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

UTC-04:00Abbreviation EDTObserves daylight saving
Time in America/Nassau☾ Night
18:59:12
Wednesday, July 15, 2026
Offset
UTC-04:00
Abbreviation
EDT
DST
Active

Current offset

UTC-04:00

standard UTC-05:00 · daylight UTC-04:00

Abbreviation

EDT

the daylight-saving form

DST behaviour

Observes

changes clocks twice a year

Country

🇧🇸 Bahamas

ISO 3166: BS · view country page →

Using this identifier

The string to put in your code.

America/Nassau 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 EDT or -04:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

Two offsets,
every year.

America/Nassau alternates between EST (UTC-05:00) and EDT (UTC-04:00). Right now it is on EDT; clocks fall back on 1 November 2026.

The year at a glance

EST · UTC-05:00EDT · UTC-04:00EST · UTC-05:008 Mar · +1h1 Nov · −1h Jan 2026 Dec

Technical record

The database entry, in full.

source: IANA tz database

IdentifierAmerica/Nassau
ISO country codeBS🇧🇸 Bahamas
Reference coordinates25.08°N, 77.35°Wtz database reference point
Standard offsetUTC-05:00abbreviation EST
Daylight offsetUTC-04:00abbreviation EDT

Where it applies

All of Bahamas, one clock.

Looking for travel-friendly info? See Nassau or Eastern Standard Time.

🇧🇸
Bahamas

399K people, one time zone. The whole country resolves to America/Nassau.

Country page →
🇧🇸 Nassau
18:59
18:59:12 · EDT
pop. 228KEST

Related identifiers

Nearby in the database.

Same zone group · Eastern Standard Time

other identifiers keeping EST

Same offset · UTC-04:00

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/Nassau?
America/Nassau is currently UTC-04:00 (EDT). It alternates between UTC-05:00 in winter and UTC-04:00 in summer.
Does America/Nassau 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/Nassau?
Bahamas. The identifier covers the whole country.
Is America/Nassau the same as EST?
America/Nassau is one of the IANA zones that keeps Eastern Standard Time (EST). Use America/Nassau in software — EST 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/Nassau
{
"iana": "America/Nassau",
"utc_offset": "-04:00",
"abbreviation": "EDT",
"observes_dst": true,
"country": "BS"
}