With the forum upgrade to vb3.5, I finally also got to upgrade the forum to the latest version of the activity mod, which I have added a lot of functionality to since the vb3.0 version. Among the new features is an adjustable "midnight". The activity cycle for a day now ends at 09:00GMT, which corresponds to 01:00PST, or 04:00EST. This should be generally more inline with our members' schedules than the previous 19:00EST. So now, "activity today" shows posts made between 04:00EST and now.