I am trying to calculate total time spent on the site. If I log the time in and then the time out and subtract the time out from the time in I should get the total time spent. I cannot figure out how to do it. The time in and time out data is stored in an ACCESS Database and is stored as the medium format. (5:23 AM) When I try to subtract the two, I think that the AM or PM extension messes up the calculation I get some thing like -8.60000000000 -E. Any ideas?