I used
=SUMPRODUCT(((DATA!$G$2:$G$5000-DATA!$F$2:$F$5000)=(DATA!$K$2:$K$5000-DATA!$J$2:$J$5000))
")) to compute if a person passed or
failed in our activity. the problem now is that, I didn't noticed the date
and time they submitted their reports.

For ex.

F G

1/2/2008 4:00:00 PM 1/2/2008 6:00:00 PM


J K
1/2/2008 4:00:00 PM 1/2/2008 5:00:00 PM


F and G tab are for the planned start and end period and the J and K tab are
for the actual start and end period. If I use the formula above, the person
will fail because the difference of time is not equal wherein the person
should pass bec he submitted his report 1hr ahead of his planned time. How am
I supposed to calculate the difference of the date and time? can you please
help me. Thanks!

*please also considered the date period