Australia’s North West observes Australian Western Standard Time (AWST) which is observed all year round. In Western Australia (AWST) is two hours behind Australian Eastern Standard Time which is observed in Queensland, New South Wales, Victoria, Australian Capital Territory and Tasmania and one and a half hours behind Australian Central Standard Time (ACST) which is observed in South Australia and Northern Territory.
However during Australian Eastern Daylight Time (AEDT) which is observed in New South Wales, Victoria and Tasmania the clocks are advanced one hour during the warmer months of the year. Generally AEDT begins at 2am on the first Sunday in October, when clocks are put forward one hour. It ends at 2am (which is 3am Eastern Daylight Saving Time) on the first Sunday in April, when clocks are put back one hour.