The date was confirmed on the BBC Radio 1 press office Twitter feed today (August 6), after outgoing presenter Chris Moyles previously revealed the date of his departure.
"So the @ChrisMoylesShow goodbye party show will be Thursday 13th September and the final morning show ever will be Friday 14th September," Moyles said.
"Start date for new @BBCR1 Breakfast show with Nick Grimshaw aka @grimmers is going to be 24 September," the BBC added.
It is not yet known who will host the breakfast show for the week of Monday, September 17 to Friday, September 21.
Moyles's ratings recently dropped to to 6.93 million listeners, his lowest audience since 2006.
Chris Moyles - Radio 1 career in pictures: photo gallery
Copyright: Rex Features