3 September is the 246th day of the year (247th in leap years). There are 119 days remaining.
- 1992: The second years have a double Herbology class in the morning, followed by Transfiguration where they practised the spell Beetle Buttons. Then, their first lesson with Professor Lockhart takes place, where he gives them a quiz on himself (which Hermione Granger scores full marks in). He then frees a group of Cornish Pixies, who wreak havoc around the classroom.
- 1995: Harry Potter has his first detention with Dolores Umbridge and learns how evil she is when she forces him to write lines with a pen using blood from his own hand: I must not tell lies.
- 1997: Harry buries Alastor Moody's magical eye, and discovers the ill-effects of the Horcrux when he fails to conjure a Patronus.