I got the following formula from this Newsgroup and re-did to fit, but
its not quite right. I am trying to total the number of employees
clocked in for each hour of the day, from values I have imported from a
Database

=SUMPRODUCT((In_Time<=($AC48+C$8))*1,(Out_Time=(( $AC48+C$8)+TIME(0,60,0)))*1)

In_Time & Out_Time = a range name of Clock in/out times formatted in
h:mm AM/PM
AC48 = the value 7:00pm
C$8 = a date, in this example 30/10/06

My value imported from the database show in Excel as dd/mm/yy hh:mm
AM/PM

Thus the formula above should total the number of entries clocked
between 6:00pm and 7:00pm for the 30/10/06. My problem is that it
returns 0 and that is not correct. I have values for other times and
they seem to be correct, so there must be something wrong in the
formula as it appears inconsistent

Any help appreciated