Given the following reasoning and answer, what was the question? The important part for answering this question is: The third series of the British reality dating programme Celebs Go Dating began airing from 4 September 2017 on E4 and finished on 29 September 2017.
The answer: 4 September 2017
The question Passage: The third series of the British reality dating programme Celebs Go Dating began airing from 4 September 2017 on E4 and finished on 29 September 2017. It was commissioned along with series 2 in late 2016. The show sees celebrities go on number of dates with members of the public to see if they can find love. The third series again stars Eden Blackman and Nadia Essex as the dating experts, and Tom Read Wilson as the agency's receptionist.

Question: Based on this passage, when does celebs go dating series 3 start?