1917
DST timeline
DST history in Australia
Overview
Daylight saving time in Australia has 3 recorded changes on record, spanning 1917-2008. The earliest documented event is the adoption in 1917: Australia first used daylight saving nationally during World War I. The most recent is the modification in 2008: Australian observing jurisdictions converged on the first Sunday in October to first Sunday in April pattern. As of the latest data, Australia is shown as "Regional" in our daylight saving tracker, which is the practical takeaway for anyone scheduling calls, travel, or deliveries against this region today.
1971
2008
modified
Australian observing jurisdictions converged on the first Sunday in October to first Sunday in April pattern.
How to read this timeline
Each entry records a distinct daylight saving milestone for Australia. An adoption marks the year clocks first began shifting; an abolition marks the year the country stopped changing them and settled on a single year-round offset; a modification covers changes to the start or end dates, the size of the shift, or which regions take part; and a reform vote records a legislative or parliamentary decision that may not yet be in force. Years reflect when the change took effect, not when it was announced, so a 2019 vote and a later effective date can both appear.
Daylight saving rules change more often than most people expect, and historical offsets are exactly the detail that breaks date math for past timestamps, travel records, and historical scheduling. If you only need today’s behaviour for Australia, the current-status link above is the fastest answer; if you are reconstructing a past date or comparing several countries, the full timeline and the linked sources below give you the authoritative record.