I use a report that links to our main database and picks up whether an incident occurs inside or outside of working hours, and the customers affected. I am able to replicate it to give an overall answer for both in and out, but the results differ slightly. I have investigated and am wondering if an incident raised at "00:00:00" (i.e. Midnight) somehow confuses Access?? My simple report lists the incidents and adds them up has 36 more customers than the other report that just gives the answer - there is an incident at "00:00:00" with 36 customers involved. There are no other incidents at midnight. Can anyone say whether this is a problem and give any suggestions???