Australie – trois fuseaux horaires principaux du continent + répartition DST
Australia runs three main mainland timezones: AEDT/AEST (Sydney, Melbourne, Brisbane, Canberra), ACDT/ACST (Adelaide, Darwin, +30 min offset from Eastern), AWDT/AWST (Perth). DST is a state-level decision — NSW, Victoria, Tasmania, South Australia, and the ACT observe it; Queensland (Brisbane), Northern Territory, and Western Australia do not. Summer flips create a moving offset mix — Sydney and Brisbane are 1 h apart in summer, same in winter.