Just wanted to know when exactly the events of the dark knight took place?? We can assume only a year after Batman Begins because the Joker was robbing banks at the end of Batman Begins. Probably took place even before that, like 8 months after Batman Begins. Which means, Batman was only around for a year. Then he disappeared for 8 more years until saving Gotham from Bane. So his legend as Gotham's superhero was very brief.