Aeroflot to Gatwick?
I don't think that is the plan!
I suspect the website has generated that data from a couple of slot applications by Aeroflot. But my interpretation is that the flights are Olympics related ad-hoc flights, and only operate on 25th and 26th July (presumably inbound pax) and 13th & 14th August (outbound following the end of the Olympics).
They are, in any case, a bit premature with the applications if the flights are Olympics related (and the dates certainly suggest so) as no Olympic related slots will be released at Gatwick until 2 or 3 weeks before the flight takes place.