The events of "Batman" take place in late November-December
https://twitter.com/DatesInMovies/status/934137042375716864
Nov 24th 1989 - Harvey Dent is unveiled as Gotham's new district attorney #Batman
https://twitter.com/DatesInMovies/status/934137042375716864
Nov 24th 1989 - Harvey Dent is unveiled as Gotham's new district attorney #Batman