Australian Western Time (Perth)
AWST is UTC+08:00 from UTC. IANA name: Australia/Perth. Covers Perth, Mandurah, Bunbury and more.
IANA Identifier
Offset Details
Major Cities
About Australian Western Time (Perth)
Australian Western Standard Time (AWST) is UTC+8 year-round. Western Australia does not observe daylight saving time — a 2009 referendum decisively rejected DST with 55% voting against, after a three-year trial. Perth is one of the world's most isolated major cities, closer to Singapore (3,900 km) and Jakarta (2,800 km) than to Sydney (3,300 km). This geographic reality means AWST (UTC+8) naturally aligns with Southeast Asian and East Asian business hours more than with eastern Australia. Perth's economy is dominated by mining — Western Australia produces a significant share of the world's iron ore, gold, and lithium, with companies like BHP, Rio Tinto, and Fortescue operating from Perth. The ASX-listed mining companies maintain Perth offices that coordinate with Asian buyers on overlapping business hours. The 2-3 hour gap between Perth and Sydney/Melbourne creates real challenges for national business (Perth morning meetings start at lunchtime in Sydney). Western Australia covers about one-third of the Australian continent under a single timezone. The state's Kimberley region in the north has discussed using UTC+9 to better match its solar time.
Technical Details
| Display Name | Australian Western Time (Perth) |
| IANA Identifier | Australia/Perth |
| Abbreviation | AWST |
| Standard Offset | UTC+08:00 |
| DST Offset | N/A |
| Observes DST | No |
| Region | Pacific |
| Major Cities | Perth, Mandurah, Bunbury, Rockingham, Geraldton, Kalgoorlie, Broome |