Airborne Landings at D-Day?

The American airborne landings did not occur all at once; it was a steady flow of troops and equipment from 0048 until after 0400

Division|Unit||# of C-47s|Drop Zone Time |:--|:--|:--|:-- n/a|1st Pathfinder Prov.|3|0020 n/a|1st Pathfinder Prov.|3|0025 n/a|1st Pathfinder Prov.|2|0027 101|1st Pathfinder Prov.|3|0035 101|2d Bn 502d PIR|36|0048 101|3rd Bn 502d PIR|45|0050 101|1st Bn 502d PIR|36|0055 101|377th Parachute FA|54|0108 101|1st Bn 506th PIR|45|0114 101|2nd Bn 506th PIR|36|0120 101|3rd Bn 501st PIR, 101st Div HQ|45|0120 n/a|1st Pathfinder Prov.||3|0120 101|1st Bn 501st PIR|45|0126 101|2d Bn 501st PIR|45|0134 n/a|1st Pathfinder Prov.|3|0138 101|3rd Bn 506th PIR, Co C 326th Engr Bn|45|0140 82|2d Bn 505th PIR|36|0151 82|3rd Bn 505th PIR, 456th Para FA (-)|36|0157 n/a|1st Pathfinder Prov.|3|0202 82|1st Bn 505th PIR, HHC 505th, 82nd Div HQ|48|0203 82|2d Bn 508th PIR|36|0208 82|HQ 508th PIR, Co B 307th Engr Bn|24|0214 82|1st Bn 508th PIR|36|0220 82|3rd Bn 508th PIR|36|0226 82|2d Bn 507th PIR|36|0232 82|3rd Bn 507th PIR|36|0238 82|1st Bn 507th PIR|45|0244 101|2 Btrys 81st AA Bn, Engineers, Elmts 327th GIR (anti-tank plat. Hq Co.) Signal, 1 surgical unit, Staff pers. 1 Bulldozer, 16 x 57mm guns, 25 vehicles|52, towing 52 gliders|0400 82|Btry A & B 80th Abn AA Bn, HQ 82nd Abn Div, 82nd Abn Div Arty, 82nd A/B Sign Co|52, towing 52 gliders|0407

As I alluded to in a previous post [here], it was intended that the Germans think of an attack in Normandy as a diversion for a real attack further north at Calais. An alert Field Marshal Gerd von Runstedt (up before 3:00 AM) actually ordered the 12th SS Panzer Division and Panzer Lehr to move out towards Caen before getting approval. When he did ask OKW, his request was refused. The reason being that the panzer divisions were not under his command, but in OKW reserve.

OKW could not agree with Runstedt in order to move the panzer divisions without approval from Hitler himself. There was a problem; Hitler was asleep, and had ordered no one to wake him! It was well after noon on June 6th when Hitler finally approved the move, but by then it was too late for the panzers to move as the cloud cover had dissipated and they would be in serious danger from allied aircraft if they moved during the day.

Sources:

D-Day, June 6, 1944: The Climactic Battle of World War II*, by Stephen E. Ambrose

http://www.6juin1944.com/assaut/aeropus/en_page.php?page=para

http://www.6juin1944.com/assaut/aeropus/en_page.php?page=glide

/r/AskHistorians Thread