From: Melbourne, Australia
The onrush of the American tanks
With the Operation Cobra, launched on 25 July, the Allied Forces broke through the German Normandy front, west of Saint-Lô. On 29 July, Coutances was taken and American armoured divisions rushed southward. The Germans attempted to reconstitute a new front, but there was a lack of troops, and the defence lines were driven from the field by the Americans. In the meantime the 2nd and 3rd Armoured Divisions trapped 7,000 German soldiers in a pocket in Roncey. 2,500 men will manage to withdraw westward until the evening of 29 July. The next day, the Combat Command B of the 4th Armoured Division was in front of Avranches. The American tanks entered the city, cleared off by the Germans on 31 July.
This is the time line I am looking at the moment. Something should happen by the 22nd July as my invasion was 3 days early. It is currently the 17th of June so there could be another 30+ days locked in normandy.