I cannot find any specific date on this article.
I wonder if it is the same convoy. http://www.bestgore.com/murder/video-isis-convoy-safe-evacua...
I would say no since the article says:
No flags or banners would be allowed to be flown from the convoy as it left the city, the deal stipulated
Otherwise, this kind of escape date from june 13, 2017.Edit: The article says "But when he and his fellow drivers assembled their convoy early on 12 October"