What was the first time that Harry's patronus takes shape in the prisoner of Azkaban?

Answer 1

The first chapter is entitled 'Owl Post'.

Through his narration Harry Potter tells the reader how he how is a very unusual boy who hates the summer holidays and really wants to do his homework. Harry is struggling to do his homework at the dead of night without the Dursley's hearing him.

Harry summarises the past two years of his life, discusses the Dursley's and his friends. He then flashes back to Ron's attempt at phoning him which resulted in a lot of shouting and Harry believing that Hermione had been warned not to phone.

Harry realises it is past midnight and he has just turned thirteen. He stands by the window and notices three owls flying towards him.

One of them brings his Hogwarts letter and a permission slip to go to Hogsmeade. For his birthday Hagrid sends Harry the 'Monster Book of Monsters' which he has to tie up with a belt. Ron sends him a Pocket Sneakoscope that lights up when there is danger and a newspaper article which shows the whole Weasley family in Egypt. He also informs Harry that Percy was made Head Boy and invites him to meet up in Diagon Alley the week before term starts. Hermione, who is in France, has sent him a broomstick servicing kit.

Answer 2

When he saves himself and Sirius from the dementors.