According to the website http://www.dpclarke.freeserve.co.uk/
V1 bombs hit Dartford as follows.
Perhaps if you visit the site and contact the guy who runs it, you'll get more.
And of course the Imperial War Museum would have files. Good Luck.
16-06-1944 Shephereds Lane and Princes Road
30-07-1944 Stone Nr. Dartford
06-08-1944 Carrington Road
16-03-1945 Moreland Avenue