Question: when did the legal drinking age change from 21 to 18 in australia?
Answer: Here in Australia we lowered the drinking age from 21 to 18 in Western Australia on July 1, 1970 while the corresponding date for Queensland was February 18, 1974. In South Australia the drinking age was lowered from 21 to 20 years with effect from December 19, 1968, and then to 18 years as from April 8, 1971.