You only have a definition for "one hour after sunset" if you have a legal
definition of "sunset", and you don't.

Jim



"Jose" wrote in message
...
And, as we have said for a number of years, none of these "non-day" times
have a legal definition within the FAR.

Well, I don't know about that. "one hour after sunset" is used thusly in
the FARs and and is therefore a kind of "non-day" that is defined in the
FARs, though a name isn't given to it.