You're getting close. You don't use equal signs in functions (only at the start
of a formula). And you need a dash inside the quotes of the second parameter.
Try:
=concatenate(text($c$17-time(1,45,0),"hh:mm"),"-*",text($c$17-time(1,15,0),"hh:mm"))
--
Regards,
Fred
"Confused Kate" <Confused
(E-Mail Removed)> wrote in message
news:72F5C44B-5E4F-4D90-83A7-(E-Mail Removed)...
> Here is the formula I've tried that isn't working:
>
> *=concatenate(text(=$c$17-time(1,45,0),"hh:mm"),"*",text(=$c$17-time(1,15,0),"hh:mm"))
>
> Is it possible to put these two formulas together? Basically, I need the
> time to look like 07:15-07:45. These times pull off of cell C17. If C17 is
> changed this range of time needs to change. How do I program excel to do
> this?