This is something that I have thought about often (sad really):-
In 1903 man first flew, every year after that there where a few & then more aircraft ( I am excluding baloons here ) there must have become a moment in time from which there was alway a member of the human race airborne, so when was that? We will never know but that millisecond must have a full date! Just a thought, due to the fact that I spent 26 years as an aircraft engineer.
Skipy, not related to Montgolfier, cats eyes Cunningham or the Red Baron as far as I know, but I am adopted!