Certainly. In your original post, you asked for the number of "days", which
I assumed excluded the times.
Will your end time *always* be greater that your start time?
If so, use:
=networkdays(b2,q2)+mod(q2,1)-mod(b2,1)-1
You probably want to format this with something like: dd hh:mm
If you need to support more than 31 days, let me know (and what you want the
output to look like).
If your end time can be less than your start time, tell us how you want it
to wrap (eg, number of hours in the working day). For example, if your
date/times are 1/4/10 12:30 PM to 1/5/10 9:18 AM, what answer do you want?
Regards,
Fred