If they are indeed date and times that Excel sees at time you can just add
them, e.g.

in A1 01/01/05, in B1 10:24

in C1

=A1+B1

will return 01/01/05 10:24

if the formula gives you a value error then the there are text values
involved

--
Regards,

Peo Sjoblom

(No private emails please)


"Phyllis Salyers" <Phyllis wrote in
message ...
I would like to combine the date from one downloaded column with the time
from a second downloaded column. I will be using this to calculate the
length of treatment using another column with date/time entered.

I am currently manually combining, so there is potential for error.

Much thanks.