Reports are being constantly updated. More creditors you have, the more frequently there will be updates.
Think of your FICO scores as a still picture snapshot of a movie in progress. The scores might vary a bit, but if your report is a horror film then they aren't going to look too good whether it's Monday or Friday, the 1st or the 31st, January or July. As things improve, and your reports looks more a Frank Capra film, the pictures will look a lot better.