On Fri, 12 Sep 2008 09:09:46 -0700 (PDT), Herbert Seidenberg
wrote:

The problem is that
1/11/08 to 30/11/08
when fully expanded reads:
1/11/08 12:00 AM to 30/11/08 12:00 AM
What we really want is:
1/11/08 00:00 to 30/11/08 24:00
which shortens to:
1/11/08 to 1/12/08
If we correct all the end dates this way and
remove all the +1's in Bob's formula, everything works.
Ron's formula now fails and it has problems
if we include odd times.

Herbert,

My formula was not designed to handle anything other than full days, as
requested.

What are the circumstances under which it fails?
--ron