Q: Passage: Dancing with the Stars is an American dance competition television series that premiered on June 1, 2005, on ABC. It is the US version of the UK series Strictly Come Dancing. The show is hosted by Tom Bergeron, alongside Erin Andrews, who became co-host in season eighteen. Lisa Canning was co-host in the first season, Samantha Harris co-hosted seasons two through nine and Brooke Burke-Charvet in seasons ten through seventeen. On July 24, 2018, it was announced that season 27 would premiere on September 24, 2018 and its spinoff Dancing with the Stars: Juniors would premiere on October 7, 2018.

Question: Based on this passage, when did dancing with the stars start this season? Let's give stream of consciousness first:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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To answer the above question, the relevant sentence is: On July 24, 2018, it was announced that season 27 would premiere on September 24, 2018 and its spinoff Dancing with the Stars: Juniors would premiere on October 7, 2018. Therefore, the final answer is September 24 , 2018.