"Hilton" wrote in message
ink.net...
Mike Rapoport wrote:
Consolidate the three definitions of
"night" to one (perhaps "when it is dark")

Consolidating the twilight with the one-hour would be OK, but I don't
think
there's any (safe and logical) way to combine the lights (sunrise, sunset)
and one-hour definitions.

Hilton



It would be relatively easy if you forget about calculated sunrise and
sunset times and say "dark".

Mike
MU-2