The picture is claimed by the original author to be screen shot of a recent CCTV documentary. I know the documentary program, but did not have time to search the scene myself.Is that August date confirmed?
Giving the specifics and being easy to verify by anyone, I would believe the author is telling the truth, that is August.
Xi Jinping did went to Liao Ning in August 2013. His inspection of the J-15 training site was reported by CCTV back then, except any mention of SAC visit.