Time zone · Oceania
AWST
Australian Western Standard Time
Australian Western Standard Time (AWST) keeps things beautifully simple — it's the steady, unchanging heartbeat of Perth and Western Australia, running on UTC+8 all year round. Western Australia last used daylight saving during a 2006–2009 trial.
Thursday, October 15, 2026
Current offset
UTC+08:00
Standard · AWST
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About AWST
A fixed, year-round offset.
Australian Western Standard Time (AWST) keeps things beautifully simple — it's the steady, unchanging heartbeat of Perth and Western Australia, running on UTC+8 all year round. Western Australia last used daylight saving during a 2006–2009 trial.
IANA zones · the technical identifiers
The zone that resolve to AWST.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Cities across AWST
Local time, city by city.
1 city
Where AWST is used
One country.
Same offset · UTC+08:00
Other zones at UTC+08:00 right now.
These named zones share AWST's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
AWST to the world's clocks.
Frequently asked questions
Common questions about AWST, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Which parts of Australia use AWST?
- AWST is used by Western Australia, with Perth as its main representative city. The entire region follows a single timezone code with no daylight saving adjustments.
- Does AWST observe daylight saving time?
- No. AWST does not observe daylight saving time — the offset stays fixed at UTC+08:00 throughout the year, simplifying planning across the region.
- What makes AWST unique among global timezones?
- AWST covers a vast area that spans multiple climatic zones, yet follows a single, consistent UTC+8:00 offset. Its stability stands in contrast to many other Australian regions that adjust for DST.
- How many member zones are in the AWST region?
- One: the Perth zone, which covers almost all of Western Australia. A few settlements near Eucla, on the South Australian border, unofficially use UTC+08:45 instead.
- Are there any upcoming transitions for AWST?
- No. Western Australia has stayed on UTC+08:00 without a clock change since 29 March 2009, when its last daylight saving trial ended.
- How does AWST affect international collaboration?
- AWST's fixed offset makes it easier to coordinate with partners in Asia-Pacific regions, with fewer scheduling surprises compared to zones that shift twice a year.
- Is AWST the same as Western Australia’s historical timezone?
- AWST has been fixed at UTC+08:00 since 2009, when Western Australia stopped observing daylight saving, streamlining timekeeping across the region.
- How does AWST interact with Australian Eastern Time?
- AWST is always two hours behind Australian Eastern Standard Time (AEST), making cross-continental meetings predictable, though eastern states may shift during their DST periods.
- What countries are part of the AWST region?
- Only Australia, specifically Western Australia, uses AWST, with Perth serving as the representative city for this timezone.
Source: IANA tzdb2026d · Reviewed
Free · Developer API
This time zone, as JSON.
Its defining offset, DST status and member counts, from one endpoint.
Also in the API: time zones by coordinates, conversions that flag daylight saving gaps, and abbreviations decoded.
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