<Li> Gary Oldman as Sirius Black, Harry's godfather and a member of the Order of the Phoenix . </Li> <Li> Alan Rickman as Severus Snape, the Potions teacher at Hogwarts and the Head of Slytherin </Li> <Li> Fiona Shaw as Petunia Dursley, Harry's Muggle aunt . </Li> <Li> Maggie Smith as Minerva McGonagall, the Transfiguration teacher at Hogwarts and a member of the Order of the Phoenix . </Li>

What time frame was harry potter set in