IANA tz database · zone identifier

Australia/Perth

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

UTC+08:00Abbreviation AWSTNo daylight saving
Time in Australia/Perth☀ Daylight
06:59:34
Thursday, October 15, 2026
Offset
UTC+08:00
Abbreviation
AWST
DST
No DST

Current offset

UTC+08:00

same year-round

Abbreviation

AWST

used year-round

DST behaviour

None

one offset all year

Country

🇦🇺 Australia

ISO 3166: AU · view country page →

Using this identifier

The string to put in your code.

Australia/Perth 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 AWST or +08:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

One offset,
17 years.

Australia/Perth has kept UTC+08:00 year-round since 29 March 2009 — 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

+07:43:24UTC+08:00 · UNCHANGED 29 March 2009 NOW

Keeping this offset since

29 March 2009

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC + 8h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database · release 2026d

IdentifierAustralia/Perth
ISO country codeAU🇦🇺 Australia
Reference coordinates31.95°S, 115.85°Etz database reference point
Standard offsetUTC+08:00abbreviation AWST
Daylight offset—no daylight saving time
tzdb release2026ddata current as of this IANA release

Where it applies

One of Australia's 12 zones.

Looking for travel-friendly info? See Perth or Australian Western Standard Time.

🇦🇺
Australia

28M people, 12 time zones — this identifier covers one of them.

Country page →
🇦🇺 Perth
06:59
06:59:34 · AWST
pop. 2.1MAWST

Related identifiers

Nearby in the database.

Same offset · UTC+08:00

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 Australia/Perth?
Australia/Perth is UTC+08:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does Australia/Perth observe daylight saving time?
No. Australia/Perth stays on UTC+08:00 all year, as it has since 29 March 2009.
Which country uses Australia/Perth?
Australia. It is one of 12 IANA zones covering the country.
Is Australia/Perth the same as AWST?
Australia/Perth is one of the IANA zones that keeps Australian Western Standard Time (AWST). Use Australia/Perth in software — AWST is a human-friendly label, not a valid identifier.

Free · Developer API

This zone, as JSON.

Its live offset, abbreviation and DST status, 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/Australia/Perth
{
"data": {
"iana": "Australia/Perth",
"observes_dst": false,
"country": { "code": "AU", "name": "Australia" },
"current": {
"utc_offset": "+08:00",
"abbreviation": "AWST",
…
},
…
}
}