IANA tz database · zone identifier

Pacific/Midway

The IANA tz database identifier for Samoa Standard Time in United States Minor Outlying Islands. Store this string — not the abbreviation, not the offset — and your timestamps stay correct forever.

UTC-11:00Abbreviation SSTNo DST — never observed
Time in Pacific/Midway☀ Daylight
11:56:37
Wednesday, July 15, 2026
Offset
UTC-11:00
Abbreviation
SST
DST
No DST

Current offset

UTC-11:00

same year-round

Abbreviation

SST

used year-round

DST behaviour

Never

has never observed daylight saving

Country

🇺🇲 United States Minor Outlying Islands

ISO 3166: UM · view country page →

Using this identifier

The string to put in your code.

Pacific/Midway 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 SST or -11:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

One offset,
69 years.

Pacific/Midway has kept UTC-11:00 year-round since 1 September 1956 — 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

−11:49:28UTC-11:00 · UNCHANGED 1 September 1956 NOW

Keeping this offset since

1 September 1956

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC − 11h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database

IdentifierPacific/Midway
ISO country codeUM🇺🇲 United States Minor Outlying Islands
Reference coordinates28.22°N, 177.37°Wtz database reference point
Standard offsetUTC-11:00abbreviation SST
Daylight offset—daylight saving has never been observed

Where it applies

One of United States Minor Outlying Islands's 2 zones.

🇺🇲
United States Minor Outlying Islands

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

Country page →

Related identifiers

Nearby in the database.

Same zone group · Samoa Standard Time

other identifiers keeping SST

Same offset · UTC-11:00

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 Pacific/Midway?
Pacific/Midway is UTC-11:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does Pacific/Midway observe daylight saving time?
No. Pacific/Midway has never observed DST — it has kept UTC-11:00 continuously since 1 September 1956.
Which country uses Pacific/Midway?
United States Minor Outlying Islands. It is one of 2 IANA zones covering the country.
Is Pacific/Midway the same as SST?
Pacific/Midway is one of the IANA zones that keeps Samoa Standard Time (SST). Use Pacific/Midway in software — SST 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=Pacific/Midway
{
"iana": "Pacific/Midway",
"utc_offset": "-11:00",
"abbreviation": "SST",
"observes_dst": false,
"country": "UM"
}