Well that explains a lot! Is there another function that uses the actual
calendar, instead of Microsoft's weird alternate universe?

I'd think that they would have something that would use the actual calendar,
like it does in MS Project. Works beautifully with my Gandt charts.

I guess I'm not familiar with using the option of formatting the results as
general or comma, so if you happen to have a link to an instructional, I'd
greatly appreciate it!

Also, thanks to the both of you for responding so quickly to a
Novice/Intermediate user like myself! I've used many basic functions of
excel for years, but didn't start using it for date calculations until this
project that I'm on.