As I recall Robbies and James ideas about what time last light was differed from the tower .
Fog take offs.
Famous one was the Two Ronnies in a Beaver
"We'll just pop up through this bit of fog Ron,wont be a couple of ticks"
"Right-ho Ron"
Several thousand feet and quite a lot of ticks later they popped out over the coast near Raglan
I did hear Ron Heneke was well and still having a DB or two