Labour Day public holiday in NSW, the ACT and South Australia

Queen’s Birthday public holiday in Queensland

6.30pm (AEDT) – Nobel Prize for Physiology or Medicine announced

Japan’s new PM Fumio Kishida to be sworn in during a special parliamentary session

Start of term 4 for Victorian schools

World Animal Day

World Habitat Day

World Architecture Day

Start of World Space Week – this year’s theme is ‘women in space’ (until 10 Oct)

Birthdays for actors Susan Sarandon (1946), Alicia Silverstone (1976) and Dakota Johnson (1989)

Anniversary of:
• the deaths of Dutch painter Rembrandt (1669), Henrietta Lacks, the woman whose cancer cells provided one of the most important cell lines in medical research (1951), and musician Janis Joplin (1970)
• the Soviet Union launching Sputnik I, the first artificial Earth satellite (1957)
• the launch of WikiLeaks by Julian Assange (2006)