Note: the TF BatKeaton is supposed to be an alternate Batman, not the exact Burtonverse Batman.
Joker's laughing bag in The Flash is vastly different. It's black (not green), and the recorded laugh is not the same at all.
That said, the original 1989 movie was supposed to take place in the "future", 2013.
October 4th, 1961: Jack Napier is born. The birthdate on the mugshot which Max Eckhardt was spreading at Axis Chemicals must be wrong.
1975: Bruce Wayne is born.
This is the trascript of what you can read on-screen from the Police Case History Folder that Alfred gave to Bruce Wayne during his investigations:
Name: Jack Napier. Sex: Male. Address: 1379 P__ 565, Gotham City. Age: 38. __:5 ft. 8". __: Gotham. Height: 5 ft. 11". __: JN7. __:265-784. __ by: __. __: 2846287.
Assault: AC+D = __ N (8-29-76)
__: AC+D = __ A (2-16-78)
__: AC+D = __ A (11-6-80) Can not prove
Extortion: AC+D = __ J (12-16-81)
As Bruce Wayne openly claimed, Napiers first certified crime happened when he was only 15 years old (1976).
1982: Selina Kyle is born.
1983: The murder of the Waynes. Jack Napier is 22 years old.
Oswald Cobblepot is born, 33 years before his war with Batman.
January 25th, 1989: the date in which Eckhardts mugshot was compiled. By this point, Napier has already visibly gained mass. Napiers birthday is wrong (its 1961 and not 1964).
1999: Napiers Police Case History Folder is created. Jack Napier is 38 years old.
2011: Batman begins. At first, he is considered to be an "urban legend".
2013: The events of Batman occur. Batman is 38 years old. The Joker is 52 years old.
2016: The events of Batman Returns occur.
Joker's laughing bag in The Flash is vastly different. It's black (not green), and the recorded laugh is not the same at all.
That said, the original 1989 movie was supposed to take place in the "future", 2013.
October 4th, 1961: Jack Napier is born. The birthdate on the mugshot which Max Eckhardt was spreading at Axis Chemicals must be wrong.
1975: Bruce Wayne is born.
This is the trascript of what you can read on-screen from the Police Case History Folder that Alfred gave to Bruce Wayne during his investigations:
Name: Jack Napier. Sex: Male. Address: 1379 P__ 565, Gotham City. Age: 38. __:5 ft. 8". __: Gotham. Height: 5 ft. 11". __: JN7. __:265-784. __ by: __. __: 2846287.
Assault: AC+D = __ N (8-29-76)
__: AC+D = __ A (2-16-78)
__: AC+D = __ A (11-6-80) Can not prove
Extortion: AC+D = __ J (12-16-81)
As Bruce Wayne openly claimed, Napiers first certified crime happened when he was only 15 years old (1976).
1982: Selina Kyle is born.
1983: The murder of the Waynes. Jack Napier is 22 years old.
Oswald Cobblepot is born, 33 years before his war with Batman.
January 25th, 1989: the date in which Eckhardts mugshot was compiled. By this point, Napier has already visibly gained mass. Napiers birthday is wrong (its 1961 and not 1964).
1999: Napiers Police Case History Folder is created. Jack Napier is 38 years old.
2011: Batman begins. At first, he is considered to be an "urban legend".
2013: The events of Batman occur. Batman is 38 years old. The Joker is 52 years old.
2016: The events of Batman Returns occur.