20 September is the 263rd day of the year (264th in leap years). There are 102 days remaining.
- 1991: Harry Potter receives his Nimbus 2000 racing broom from the Head of Gryffindor House, Professor McGonagall. The Gryffindor Quidditch team's first practice of the year takes place at seven p.m. that same day.
Behind the scenes
- 1953: Sian Thomas, who played the part of Amelia Bones in the film adaptation Harry Potter and the Order of the Phoenix, is born.