What is the UTC offset of the IANA time zone 'Australia/Eucla'?

The UTC offset of the IANA time zone Australia/Eucla is UTC+8:45. This unusual zone is used around Eucla and nearby settlements along the Eyre Highway, in the remote region near the Western Australia–South Australia border. It is often called Central Western Time or “Eucla time.”

The 45-minute offset is a compromise between Western Australia’s UTC+8 and South Australia’s UTC+9:30 standard time. The zone is not a regular state-wide legal time zone, but its boundaries are widely recognized locally and appear on maps and road signs. Travellers driving the Eyre Highway may therefore need to adjust their clocks by 45 minutes.

The practice has historical roots: a Commonwealth Railways timetable from April 1935 already instructed passengers to change their watches by 45 minutes between parts of the Trans-Australian Railway. Australia/Eucla is the IANA identifier used by software for this region. A common mix-up is UTC+9, which applies in some nearby outback locations, while the long-term Eucla-area offset is UTC+8:45. The region generally does not observe daylight saving time.