the impact on the hospital appears on satellite image after 20 Mar 2016. there isn't much visible of the impact of the second missile but that may be due to their success rate of mere 10%.. ;-)
as for the second strike in Tabqa that was shown in this video it appears to have taken place around the same time, between 14 January and 24 March 2016
mass grave sites in Raqqa which were prepared by IS early in 2017 in advance to their loss of the province and the city to the SDF are visible on Google Earth
from the article: "of the bodies exhumed to date [..] some 80 per cent have been civilians [..] all of those buried here died in the final fight for Raqqa [..] many died in the crossfire. «Isis prevented anyone from getting out of the city, and the coalition bombed everything»"